Earth Pulse Monthly · May 2026 · Baner, Pune

May 2026 in Baner — Air, Birds & Weather

Generated from 31,478+ sensor readings · Published

Baner Hill, First of May 2026 (1 May 2026, 09:53 IST)
📷 First photo · 1 May 2026, 09:53 IST
Baner Hill, Last of May 2026 (31 May 2026, 10:50 IST)
📷 Last photo · 31 May 2026, 10:50 IST

In , Baner (Pune) recorded an average EU AQI of 45.9 (cleaner than April 2026); temperatures from 21.9 to 41.2 °C; 40.4 mm of rain with 2 rainy days (2.5 mm or more) and 49 confirmed bird species from 5,296 BirdNET detections (confidence 0.70 or higher).

May 2026 at a glance (screenshot and share)

🌿 Earth Pulse · Baner, PuneMAY 2026
May 2026: a moderate month for Baner
45.9Avg AQI (EU)
30.8°CAvg temperature
40.4 mmRain · 2 rainy days
49Confirmed species
5,296Confirmed detections
6 / 31Clean-air days (EU AQI)
Observing the Earth, over time · www.earth-pulse.org⚡ Pulse Score 64
📲 WhatsApp ✕ Share in LinkedIn

The month in numbers

Key facts: May 2026 in Baner, Pune

Average AQI (EU scale)
45.9average of daily means; range 13-74; lower is cleaner
Clean days (worst AQI 40 or below)
6of 31 complete days
High-pollution days (worst AQI 61 or above)
16of 31 complete days
Temperature range
21.9-41.2 °Caverage 30.8 °C (Baner Weather Union station readings)
Rain
40.4 mm2 rainy days (2.5 mm or more); 3 days with 0.3 mm or more
Average humidity
58%average of daily means
Confirmed bird species (0.70 or higher)
495296 confirmed detections
Candidate bird species (all detections)
11627758 detections including lower-confidence
Peak bird hour (confirmed)
06:00 IST
Most active confirmed species
Asian Koel4146 detections
Soundscape (mean NDSI, 0-1)
0.373median 0.364; 892 valid readings
Pulse Score
64composite of air, birds and clean days

Days run 00:00–24:00 IST. AQI is the European (EU) scale, 0–100, lower is cleaner. Bird headline numbers count detections at confidence 0.70 or higher ("confirmed").

Pulse Score 64 out of 100A ring filled to 64 percent.64

Moderate month for Baner

May 2026 saw the air become hazier, with the average AQI increasing by 2.5 points compared to May 2025. The month was also significantly warmer.

Air21.6 / 40100 − average AQI 45.9
Birds30 / 30capped: 5,296 confirmed detections ÷ 8 is over 100
Days avg ≤ 4012.6 / 3042% of days had a daily-average EU AQI of 40 or below (not the clean-air-day count)

May 2026 in Baner, Pune, experienced an average AQI of 45.9, marking it as hazier than May 2025's average of 43.4. The average temperature reached 30.8°C, a notable increase of 4.4°C compared to May 2025's estimated 26.4°C. Rainfall was considerably lower, with 40.4mm recorded over 2 days, in stark contrast to the 255.3mm of rain over 15 days in May 2025 (temperature and rain for 2025 are Open-Meteo model estimates, not station readings, and this comparison mixes a model with a station, so it is not a trend). The air quality was better than in May 2024 (average AQI 58.8) and May 2023 (average AQI 54.9). Compared to April 2026, May was cleaner with an AQI average of 45.9 versus 65.6. Bird detections increased significantly from April, with 5296 confirmed detections of 49 species, compared to 1458 detections of 29 species in April. The soundscape recorded a mean NDSI of 0.373.

Month on month

Compared with April 2026

May 2026 against April 2026. Red = worse for air or wildlife, green = better; rain is shown without a colour judgement. Both months use the same source (Baner station).

Average AQI (EU)
45.9
vs 65.6 in April 2026 · higher = hazier
cleaner by 19.7
Clean-air days (worst hour EU AQI ≤ 40)
6
vs 0 in April 2026
more by 6
Temperature range
21.9–41.2 °C
vs 19.6–41.5 °C in April 2026; average 30.8 vs 30.7 °C
warmer by 0.1 °C
Rainfall
40.4 mm
vs 37.8 mm in April 2026; rainy days 2 vs 1
wetter by 2.6 mm
Bird activity (confirmed)
5,296
detections vs 1,458 in April 2026
more active by 3,838
Confirmed species
49
vs 29 in April 2026
more by 20
Pulse Score
64
vs 45 in April 2026
higher by 19

Year on year · same month

Same month last year: May 2025

Sources for temperature and rain: 2026: Baner Weather Union station readings; 2025: Open-Meteo model estimates. Air quality uses the same EU AQI source in both years.

Average AQI (EU)
45.9
vs 43.4 in May 2025 · higher = hazier
hazier by 2.5
Average temperature
30.8 °C
vs 26.4 °C in May 2025
warmer by 4.4 °C
Rainfall
40.4 mm
vs 255.3 mm in May 2025
drier by 214.9 mm
Rainy days (≥ 2.5 mm)
2
vs 15 in May 2025
fewer by 13
Birds
No data
No BirdNET data before March 2026 (this is "no data", not zero).

Caution: 2025 temperature and rain are Open-Meteo model estimates; 2026 values are Baner Weather Union station readings. Direction is shown but this mixes a model with a station and is not a trend.

The long view · ERA5 reanalysis (a model, not a station)

ERA5 reanalysis, 1980–2021, 42 years: May in context

ERA5 is a reanalysis model (Copernicus / ECMWF), not a station. It is shown beside, and never subtracted from, Open-Meteo or station values. The bias-free signal is ERA5 compared with ERA5 (early 1981-90 vs recent 2012-21).

ERA5 normal, 1981–2010 (30 years)
27.6 °C
mean; average daily max 34.9 °C, min 22.1 °C
Rain 23.4 mm on about 2.2 rainy days
ERA5 against itself: 1981–90 → 2012–21
+0.51 °C
mean 27.72 → 28.23 °C (decade averages)
Rain 22.6 → 23.8 mm (+1.2 mm)
ERA5 record years for May
  • Warmest: 1998 (29.08 °C mean)
  • Coolest: 2000 (25.94 °C mean)
  • Wettest: 1990 (99.2 mm)
  • Driest: 2019 (0 mm)
This month, separate series · Baner station
May 2026: average 30.8 °C, rain 40.4 mm.

Shown beside ERA5, not subtracted from it. A station near the city and a 30 km reanalysis grid measure different things, so the gap between them is not a warming figure. The bias-free change is ERA5 against itself, above.

See every May since 1980 →

Air · European AQI, 0–100

Air quality — May 2026

AQI range this month (EU scale, 0–100)
Low: 13High: 74
Avg AQI
45.9
EU scale
Days averaging ≤ 40
42%
daily-average AQI; feeds the Pulse Score
Humidity avg
58%
average of daily means
Air quality, day by day
Colour = daily-average EU AQI. ▲ = a high-pollution day (worst hour 61 or more).
Daily-average EU AQI for each day of May 2026
MonTueWedThuFriSatSun
137256 high-pollution day361 high-pollution day
446540662 high-pollution day766 high-pollution day872 high-pollution day967 high-pollution day1064 high-pollution day
1157 high-pollution day1256 high-pollution day1352 high-pollution day1459 high-pollution day1560 high-pollution day1651 high-pollution day1753 high-pollution day
1861 high-pollution day1960 high-pollution day20492136222923232423
2525262827282828292630253127
Good (0–20)Fair (21–40)Moderate (41–60)Poor (61–80)Very poor (81–100)
6 days stayed clean all day (worst hour 40 or below). Hover or tap a day for its worst hour. Lower is cleaner.

View full AQI history →

Weather · Baner station

Temperature & rain — Baner, Pune

High
41.2°
°C this month
Low
21.9°
°C this month
Average
30.8°
°C
Total rain
40.4
mm · 2 rainy days (≥ 2.5 mm)
Every day's low and high, May
Each bar runs from the coolest to the warmest reading of the IST day.
Daily temperature range, May 2026For each day of May 2026, a bar from the lowest to the highest temperature. Highest 41.2 °C on 10 May 2026; lowest 21.9 °C on 22 May 2026.202530354045°C1 May 2026: 24.2–35.9 °C2 May 2026: 23.8–36 °C3 May 2026: 24.5–36.7 °C4 May 2026: 24.2–36.5 °C5 May 2026: 24.2–37.4 °C6 May 2026: 24.4–38.7 °C7 May 2026: 25.7–40.4 °C8 May 2026: 27–39.1 °C9 May 2026: 27.5–37.9 °C10 May 2026: 25.5–41.2 °C11 May 2026: 28.3–41.1 °C12 May 2026: 27.4–39.4 °C13 May 2026: 27.7–38.3 °C14 May 2026: 26.6–38.2 °C15 May 2026: 27.7–34.8 °C16 May 2026: 24.8–38.7 °C17 May 2026: 26.6–39.1 °C18 May 2026: 26.6–39.2 °C19 May 2026: 26.1–35.8 °C20 May 2026: 25–35.1 °C21 May 2026: 25.1–37 °C22 May 2026: 21.9–36 °C23 May 2026: 25.6–33.4 °C24 May 2026: 26.5–34.3 °C25 May 2026: 26.1–36.3 °C26 May 2026: 25.5–35.8 °C27 May 2026: 26.3–37.2 °C28 May 2026: 25.7–38.1 °C29 May 2026: 26.2–36.2 °C30 May 2026: 26.8–36.7 °C31 May 2026: 26.8–35.4 °Chigh 41.2 °Clow 21.9 °C18152229
Show the numbers
Every day's low and high, May
DayLow °CHigh °C
1 May 202624.235.9
2 May 202623.836
3 May 202624.536.7
4 May 202624.236.5
5 May 202624.237.4
6 May 202624.438.7
7 May 202625.740.4
8 May 20262739.1
9 May 202627.537.9
10 May 202625.541.2
11 May 202628.341.1
12 May 202627.439.4
13 May 202627.738.3
14 May 202626.638.2
15 May 202627.734.8
16 May 202624.838.7
17 May 202626.639.1
18 May 202626.639.2
19 May 202626.135.8
20 May 20262535.1
21 May 202625.137
22 May 202621.936
23 May 202625.633.4
24 May 202626.534.3
25 May 202626.136.3
26 May 202625.535.8
27 May 202626.337.2
28 May 202625.738.1
29 May 202626.236.2
30 May 202626.836.7
31 May 202626.835.4
Baner station values. Daily highs and lows come from the daily cache.
Rain, day by day (May)
Grey line: 2.5 mm, the rainy-day threshold (IMD). 2 rainy days; 3 days with 0.3 mm or more.
Daily rainfall, May 2026Bar chart of rain per day in May 2026. 2 days reached 2.5 mm; the wettest day was 22 May 2026 with 33.8 mm.010203040mm per day2 May 2026: 6 mm (rainy day)8 May 2026: 0.6 mm22 May 2026: 33.8 mm (rainy day)2.5 mm rainy-day threshold33.8 mm18152229
Show the numbers
Rain, day by day (May)
DayRain mm
1 May 20260
2 May 20266
3 May 20260
4 May 20260
5 May 20260
6 May 20260
7 May 20260
8 May 20260.6
9 May 20260
10 May 20260
11 May 20260
12 May 20260
13 May 20260
14 May 20260
15 May 20260
16 May 20260
17 May 20260
18 May 20260
19 May 20260
20 May 20260
21 May 20260
22 May 202633.8
23 May 20260
24 May 20260
25 May 20260
26 May 20260
27 May 20260
28 May 20260
29 May 20260
30 May 20260
31 May 20260
Days under 0.3 mm are traces and count as dry. Totals still include every drop.

Monsoon & rainfall history → · Temperature history →

Birds · BirdNET acoustic AI · confirmed = 0.70 or higher

Birds of May — Baner Hill

Confirmed detections
5,296
≥ 0.70 confidence
Confirmed species
49
≥ 0.70 confidence
Peak hour
6:00 AM
IST
Most active
Asian Koel
4,146 detections
When the hill sings: birds by hour
Confirmed detections per IST hour, whole month. Shaded: the dawn window, 05:00–07:59, with 51% of all confirmed detections.
Confirmed bird detections by hour of dayBar chart of confirmed detections in each IST hour over the month; peak at 06:00 with 1,265. 51% fell between 05:00 and 07:59.Dawn window 05:00–07:59 IST02004006008001,0001,2001,400detections00:00–00:59 IST: 20 confirmed detections01:00–01:59 IST: 16 confirmed detections02:00–02:59 IST: 8 confirmed detections03:00–03:59 IST: 20 confirmed detections04:00–04:59 IST: 21 confirmed detections05:00–05:59 IST: 519 confirmed detections06:00–06:59 IST: 1,265 confirmed detections07:00–07:59 IST: 897 confirmed detections08:00–08:59 IST: 766 confirmed detections09:00–09:59 IST: 54 confirmed detections10:00–10:59 IST: 20 confirmed detections11:00–11:59 IST: 17 confirmed detections12:00–12:59 IST: 22 confirmed detections13:00–13:59 IST: 20 confirmed detections14:00–14:59 IST: 15 confirmed detections15:00–15:59 IST: 40 confirmed detections16:00–16:59 IST: 77 confirmed detections17:00–17:59 IST: 111 confirmed detections18:00–18:59 IST: 943 confirmed detections19:00–19:59 IST: 416 confirmed detections20:00–20:59 IST: 2 confirmed detections21:00–21:59 IST: 13 confirmed detections22:00–22:59 IST: 9 confirmed detections23:00–23:59 IST: 5 confirmed detectionspeak 06:00, 1,2650006121823
Show the numbers
When the hill sings: birds by hour
Hour (IST)Confirmed detections
00:0020
01:0016
02:008
03:0020
04:0021
05:00519
06:001,265
07:00897
08:00766
09:0054
10:0020
11:0017
12:0022
13:0020
14:0015
15:0040
16:0077
17:00111
18:00943
19:00416
20:002
21:0013
22:009
23:005
BirdNET hears calls, not birds: one bird singing often counts many times. Rain and wind lower confidence, so wet hours look quieter.
Bird detections and species by BirdNET confidence tier
ConfidenceDetectionsSpecies
≥ 0.70 · confirmed (headline)5,29649
≥ 0.509,14865
≥ 0.3015,82485
All recorded (≥ 0.15) · candidates27,758116

BirdNET gives every detection a confidence score. Earth Pulse counts only detections at 0.70 or higher as confirmed; lower tiers are shown for transparency and include false positives.

Top 10 confirmed species this month

  1. #1
    Asian Koel
    ©Photo: Challiyan, via Wikimedia Commons · CC BY-SA 4.0
    Asian KoelEudynamys scolopaceus4,146 (82%)
  2. #2
    Red-wattled Lapwing
    ©Photo: Shantanu Kuveskar, via Wikimedia Commons · CC BY-SA 4.0
    Red-wattled LapwingVanellus indicus444 (9%)
  3. #3
    Ashy Prinia
    ©Photo: Tisha Mukherjee, via Wikimedia Commons · CC BY-SA 4.0
    Ashy PriniaPrinia socialis186 (4%)
  4. #4
    Black Drongo
    ©Photo: Swardeepak, via Wikimedia Commons · CC BY-SA 4.0
    Black DrongoDicrurus macrocercus97 (2%)
  5. #5
    Gray Francolin
    ©Photo: Tisha Mukherjee, via Wikimedia Commons · CC BY-SA 4.0
    Gray FrancolinOrtygornis pondicerianus47 (1%)
  6. #6
    Large-billed Crow
    ©Photo: Laitche, via Wikimedia Commons · CC BY-SA 4.0
    Large-billed CrowCorvus macrorhynchos40 (1%)
  7. #7
    Common Myna
    ©Photo: Gerrie van Vuuren, via Wikimedia Commons · CC BY-SA 4.0
    Common MynaAcridotheres tristis32 (1%)
  8. #8
    Black-crowned Night-Heron
    ©Photo: ramidos, via Wikimedia Commons · CC BY 4.0
    Black-crowned Night-HeronNycticorax nycticorax30 (1%)
  9. #9
    Common Tailorbird
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Common TailorbirdOrthotomus sutorius27 (1%)
  10. #10
    White-throated Kingfisher
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    White-throated KingfisherHalcyon smyrnensis26 (1%)

View live bird detection log →

Birds · who rose, who fell

Species momentum vs April 2026

Confirmed detections (confidence 0.70 or higher), this month vs last month. Rule: up or down = change of 25% or more AND at least 5 detections; otherwise stable. Bars: last month (light) and this month (dark), per bird.

More active (11)

  • Asian Koel
    ©Photo: Challiyan, via Wikimedia Commons · CC BY-SA 4.0
    Asian KoelEudynamys scolopaceus835 → 4,146 (+397%)
  • Ashy Prinia
    ©Photo: Tisha Mukherjee, via Wikimedia Commons · CC BY-SA 4.0
    Ashy PriniaPrinia socialis39 → 186 (+377%)
  • Red-wattled Lapwing
    ©Photo: Shantanu Kuveskar, via Wikimedia Commons · CC BY-SA 4.0
    Red-wattled LapwingVanellus indicus338 → 444 (+31%)
  • Black Drongo
    ©Photo: Swardeepak, via Wikimedia Commons · CC BY-SA 4.0
    Black DrongoDicrurus macrocercus2 → 97 (+4,750%)
  • Large-billed Crow
    ©Photo: Laitche, via Wikimedia Commons · CC BY-SA 4.0
    Large-billed CrowCorvus macrorhynchos13 → 40 (+208%)
  • Common Myna
    ©Photo: Gerrie van Vuuren, via Wikimedia Commons · CC BY-SA 4.0
    Common MynaAcridotheres tristis5 → 32 (+540%)
  • Red-vented Bulbul
    ©Photo: Mahmadanesh, via Wikimedia Commons · CC BY 4.0
    Red-vented BulbulPycnonotus cafer3 → 25 (+733%)
  • White-throated Kingfisher
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    White-throated KingfisherHalcyon smyrnensis6 → 26 (+333%)
  • Indian Robin
    ©Photo: Shino jacob koottanad, via Wikimedia Commons · CC BY-SA 4.0
    Indian RobinCopsychus fulicatus7 → 25 (+257%)
  • Shikra
    ©Photo: Ravi Vaidyanathan, via Wikimedia Commons · CC BY 2.5
    ShikraAccipiter badius12 → 21 (+75%)
  • Indian White-eye
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Indian White-eyeZosterops palpebrosus1 → 9 (+800%)

Less active (4)

  • Gray Francolin
    ©Photo: Tisha Mukherjee, via Wikimedia Commons · CC BY-SA 4.0
    Gray FrancolinOrtygornis pondicerianus80 → 47 (−41%)
  • Tree Pipit
    ©Photo: Imran Shah from Islamabad, Pakistan, via Wikimedia Commons · CC BY-SA 2.0
    Tree PipitAnthus trivialis19 → 1 (−95%)
  • Osprey
    ©Photo: Chuck Homler / Focus On Wildlife, via Wikimedia Commons · CC BY-SA 4.0
    OspreyPandion haliaetus27 → 16 (−41%)
  • Green Sandpiper
    ©Photo: Swardeepak, via Wikimedia Commons · CC BY-SA 4.0
    Green SandpiperTringa ochropus9 → 4 (−56%)
Heard this month, not last month (22)Common Tailorbird, Rufous Treepie, Tickell's Blue Flycatcher, Cinereous Tit …
  • Common Tailorbird
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Common TailorbirdOrthotomus sutorius27 this month · not heard last month
  • Rufous Treepie
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Rufous TreepieDendrocitta vagabunda20 this month · not heard last month
  • Tickell's Blue Flycatcher
    ©Photo: Shantanu Kuveskar, via Wikimedia Commons · CC BY-SA 4.0
    Tickell's Blue FlycatcherCyornis tickelliae17 this month · not heard last month
  • Cinereous Tit
    ©Photo: Shantanu Kuveskar, via Wikimedia Commons · CC BY-SA 4.0
    Cinereous TitParus cinereus11 this month · not heard last month
  • Oriental Magpie-Robin
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Oriental Magpie-RobinCopsychus saularis6 this month · not heard last month
  • Red-whiskered Bulbul
    ©Photo: myjkccd, via Wikimedia Commons · Public domain
    Red-whiskered BulbulPycnonotus jocosus3 this month · not heard last month
  • Indian Thick-knee
    ©Photo: Satdeep Gill, via Wikimedia Commons · CC BY-SA 4.0
    Indian Thick-kneeBurhinus indicus3 this month · not heard last month
  • Rock Pigeon
    ©Photo: william_stephens, via Wikimedia Commons · CC BY 4.0
    Rock PigeonColumba livia3 this month · not heard last month
  • Common Hawk-Cuckoo
    ©Photo: Unknown author, via Wikimedia Commons · CC BY 2.0
    Common Hawk-CuckooHierococcyx varius2 this month · not heard last month
  • Changeable Hawk-Eagle
    ©Photo: Charles J. Sharp, via Wikimedia Commons · CC BY-SA 4.0
    Changeable Hawk-EagleNisaetus cirrhatus2 this month · not heard last month
  • Black Kite
    ©Photo: Andreas Trepte, via Wikimedia Commons · CC BY-SA 4.0
    Black KiteMilvus migrans2 this month · not heard last month
  • Eurasian Hoopoe
    ©Photo: Greg Schechter from San Francisco, USA, via Wikimedia Commons · CC BY 2.0
    Eurasian HoopoeUpupa epops2 this month · not heard last month
  • Indian Peafowl
    ©Photo: Kandukuru Nagarjun from Bangalore, India, via Wikimedia Commons · CC BY 2.0
    Indian PeafowlPavo cristatus1 this month · not heard last month
  • Red-naped Ibis
    ©Photo: Shantanu Kuveskar, via Wikimedia Commons · CC BY-SA 4.0
    Red-naped IbisPseudibis papillosa1 this month · not heard last month
  • Common Greenshank
    ©Photo: Andreas Trepte, via Wikimedia Commons · CC BY-SA 2.5
    Common GreenshankTringa nebularia1 this month · not heard last month

Showing 15 of 22.

Heard last month, not this month (2)Greater Coucal, Black Redstart
  • Greater Coucal
    ©Photo: Davidvraju, via Wikimedia Commons · CC BY-SA 4.0
    Greater CoucalCentropus sinensis2 last month · none this month
  • Black Redstart
    ©Photo: El Golli Mohamed, via Wikimedia Commons · CC BY-SA 4.0
    Black RedstartPhoenicurus ochruros1 last month · none this month
Stable (12)Black-crowned Night-Heron, Purple Sunbird, Rose-ringed Parakeet, Indian Gray Hornbill …
  • Black-crowned Night-Heron
    ©Photo: ramidos, via Wikimedia Commons · CC BY 4.0
    Black-crowned Night-HeronNycticorax nycticorax28 → 30 (+7%)
  • Purple Sunbird
    ©Photo: Nicholas Iyadurai, via Wikimedia Commons · CC BY-SA 4.0
    Purple SunbirdCinnyris asiaticus2 → 6 (+200%)
  • Rose-ringed Parakeet
    ©Photo: danielskatz, via Wikimedia Commons · CC BY 4.0
    Rose-ringed ParakeetPsittacula krameri4 → 6 (+50%)
  • Indian Gray Hornbill
    ©Photo: J.M.Garg, via Wikimedia Commons · CC BY-SA 3.0
    Indian Gray HornbillOcyceros birostris2 → 5 (+150%)
  • House Crow
    ©Photo: Pkspks, via Wikimedia Commons · CC BY 4.0
    House CrowCorvus splendens1 → 4 (+300%)
  • Common Sandpiper
    ©Photo: JJ Harrison ( https://www.jjharrison.com.au/ ), via Wikimedia Commons · CC BY 3.0
    Common SandpiperActitis hypoleucos7 → 4 (−43%)
  • Gray Heron
    ©Photo: Giacomo Cimino ( foto.giacomocimino.workers.dev · @giacomociminoph ), via Wikimedia Commons · CC BY-SA 4.0
    Gray HeronArdea cinerea1 → 4 (+300%)
  • Eurasian Curlew
    ©Photo: Andreas Trepte, via Wikimedia Commons · CC BY-SA 2.5
    Eurasian CurlewNumenius arquata2 → 3 (+50%)
  • Jungle Prinia
    ©Photo: Tisha Mukherjee, via Wikimedia Commons · CC BY-SA 4.0
    Jungle PriniaPrinia sylvatica2 → 3 (+50%)
  • Eurasian Moorhen
    ©Photo: Alexis Lours, via Wikimedia Commons · CC BY 4.0
    Eurasian MoorhenGallinula chloropus4 → 2 (−50%)
  • Eurasian Coot
    ©Photo: Alexis Lours, via Wikimedia Commons · CC BY 4.0
    Eurasian CootFulica atra5 → 1 (−80%)
  • Eurasian Kestrel
    ©Photo: Andreas Trepte, via Wikimedia Commons · CC BY-SA 2.5
    Eurasian KestrelFalco tinnunculus1 → 1 (±0%)

"Not heard" means no confirmed detection (0.70 or higher) on the recorder, not that the bird left the hill. Rare birds with 1–2 detections move in and out of these lists by chance.

Soundscape · NDSI

Soundscape health

NDSI 0 to 1; higher = more natural sound relative to human noise. Readings outside 0-1 are excluded as invalid.

Mean NDSI this month
0.373
median 0.364; middle 80% 0.066–0.704
= similar (−0.005)
Mean NDSI, April 2026
0.378
median 0.359; 129 valid readings
Valid readings
892
of 1,469 raw on 31 days; 577 outside 0–1 excluded
Soundscape index, day by day (May)
Daily mean NDSI from valid readings (0 to 1). Grey line: April 2026 mean, 0.378.
Daily mean NDSI, MayLine chart of the daily mean soundscape index (NDSI) for each day of May, between 0.277 and 0.517; monthly mean 0.373. Last month's mean was 0.378.0.250.30.350.40.450.50.55NDSI (0–1)Last month mean 0.3781 May 2026: mean NDSI 0.4 from 29 readings2 May 2026: mean NDSI 0.342 from 32 readings3 May 2026: mean NDSI 0.341 from 25 readings4 May 2026: mean NDSI 0.319 from 26 readings5 May 2026: mean NDSI 0.326 from 29 readings6 May 2026: mean NDSI 0.385 from 24 readings7 May 2026: mean NDSI 0.325 from 34 readings8 May 2026: mean NDSI 0.327 from 15 readings9 May 2026: mean NDSI 0.356 from 20 readings10 May 2026: mean NDSI 0.277 from 22 readings11 May 2026: mean NDSI 0.412 from 32 readings12 May 2026: mean NDSI 0.429 from 35 readings13 May 2026: mean NDSI 0.407 from 31 readings14 May 2026: mean NDSI 0.368 from 32 readings15 May 2026: mean NDSI 0.435 from 42 readings16 May 2026: mean NDSI 0.383 from 35 readings17 May 2026: mean NDSI 0.46 from 25 readings18 May 2026: mean NDSI 0.329 from 27 readings19 May 2026: mean NDSI 0.35 from 31 readings20 May 2026: mean NDSI 0.329 from 42 readings21 May 2026: mean NDSI 0.376 from 36 readings22 May 2026: mean NDSI 0.336 from 31 readings23 May 2026: mean NDSI 0.517 from 21 readings24 May 2026: mean NDSI 0.325 from 18 readings25 May 2026: mean NDSI 0.387 from 21 readings26 May 2026: mean NDSI 0.334 from 25 readings27 May 2026: mean NDSI 0.395 from 25 readings28 May 2026: mean NDSI 0.348 from 31 readings29 May 2026: mean NDSI 0.427 from 34 readings30 May 2026: mean NDSI 0.398 from 32 readings31 May 2026: mean NDSI 0.369 from 30 readings18152229
Show the numbers
Soundscape index, day by day (May)
DayMean NDSIReadings
1 May 20260.429
2 May 20260.34232
3 May 20260.34125
4 May 20260.31926
5 May 20260.32629
6 May 20260.38524
7 May 20260.32534
8 May 20260.32715
9 May 20260.35620
10 May 20260.27722
11 May 20260.41232
12 May 20260.42935
13 May 20260.40731
14 May 20260.36832
15 May 20260.43542
16 May 20260.38335
17 May 20260.4625
18 May 20260.32927
19 May 20260.3531
20 May 20260.32942
21 May 20260.37636
22 May 20260.33631
23 May 20260.51721
24 May 20260.32518
25 May 20260.38721
26 May 20260.33425
27 May 20260.39525
28 May 20260.34831
29 May 20260.42734
30 May 20260.39832
31 May 20260.36930
Higher NDSI = more natural sound (birds, insects) relative to human noise. Day-to-day changes are noisy; look at the month, not single days.

One recording node. 39% of raw readings were outside 0-1 and excluded.

The long view · one value per year

Every May since 1980

Two separate records, drawn on separate charts with separate axes: ERA5 reanalysis for 1980–2021, then Earth Pulse's own record for the last few years. They are never joined into one line.

1980–2021: ERA5 reanalysis

ERA5: May mean temperature, 1980–2021
Reanalysis model (Copernicus / ECMWF), one value per year, its own axis. Grey line: 1981–2010 normal, 27.6 °C.
May mean temperature, ERA5 reanalysis, 1980–2021Line chart of the May mean temperature for each year from 1980 to 2021 on ERA5. Values range from 25.9 °C in 2000 to 29.1 °C in 1998. The 1981–2010 normal is 27.6 °C.252627282930°C (mean)1981–2010 normal 27.63 °C1998 warmest, 29.12000 coolest, 25.91980: 28.49 °C mean (ERA5)1981: 27.73 °C mean (ERA5)1982: 27.84 °C mean (ERA5)1983: 27.74 °C mean (ERA5)1984: 28.14 °C mean (ERA5)1985: 27.78 °C mean (ERA5)1986: 27.34 °C mean (ERA5)1987: 28.58 °C mean (ERA5)1988: 27.8 °C mean (ERA5)1989: 27.52 °C mean (ERA5)1990: 26.77 °C mean (ERA5)1991: 28.52 °C mean (ERA5)1992: 27.98 °C mean (ERA5)1993: 27.98 °C mean (ERA5)1994: 27.76 °C mean (ERA5)1995: 27.59 °C mean (ERA5)1996: 27.34 °C mean (ERA5)1997: 27.05 °C mean (ERA5)1998: 29.08 °C mean (ERA5)1999: 26.15 °C mean (ERA5)2000: 25.94 °C mean (ERA5)2001: 26.81 °C mean (ERA5)2002: 27.46 °C mean (ERA5)2003: 27.69 °C mean (ERA5)2004: 27.37 °C mean (ERA5)2005: 27.85 °C mean (ERA5)2006: 27.98 °C mean (ERA5)2007: 27.48 °C mean (ERA5)2008: 26.95 °C mean (ERA5)2009: 27.91 °C mean (ERA5)2010: 28.86 °C mean (ERA5)2011: 27.37 °C mean (ERA5)2012: 27.36 °C mean (ERA5)2013: 28.07 °C mean (ERA5)2014: 28.4 °C mean (ERA5)2015: 28.81 °C mean (ERA5)2016: 28.42 °C mean (ERA5)2017: 28.35 °C mean (ERA5)2018: 28.59 °C mean (ERA5)2019: 28.22 °C mean (ERA5)2020: 29.03 °C mean (ERA5)2021: 27.07 °C mean (ERA5)19801990200020102020
Show the numbers
ERA5: May mean temperature, 1980–2021
YearMean °CMax °C (avg)Min °C (avg)
198028.4936.5622.05
198127.7335.1921.91
198227.8434.8122.47
198327.7435.8521.58
198428.1436.2521.89
198527.7835.5122.24
198627.3434.8821.86
198728.5836.4722.42
198827.835.2821.95
198927.5234.6321.94
199026.7732.7622.91
199128.5236.1722.66
199227.9835.5522
199327.9835.5121.83
199427.7635.5921.84
199527.5934.322.52
199627.3435.1221.15
199727.0534.6520.96
199829.0836.0823.5
199926.1532.6321.69
200025.9431.921.64
200126.8133.7521.78
200227.4633.7423.01
200327.6935.6321.57
200427.3733.4822.86
200527.8535.721.59
200627.9835.3522.4
200727.4834.5322.34
200826.9534.3521.54
200927.9135.4322.01
201028.8636.4822.99
201127.3734.522.02
201227.3635.6921.07
201328.0735.5222.55
201428.435.922.82
201528.8136.522.95
201628.4235.5823.02
201728.3536.0222.38
201828.593622.76
201928.2236.6721.25
202029.0336.8722.93
202127.0732.722.46
ERA5 is a ~30 km grid model, so it reads cooler than a point near the city. Compare these years only with each other.
ERA5: May rainfall, 1980–2021
Wettest 1990 (99 mm), driest 2019 (0 mm). Grey line: 1981–2010 normal, 23 mm.
May rainfall, ERA5 reanalysis, 1980–2021Bar chart of May rain totals per year on ERA5, from 0 mm in 2019 to 99 mm in 1990. The 1981–2010 normal is 23 mm.020406080100mm (month total)1980: 9.1 mm, 0 rainy days (ERA5)1981: 5.6 mm, 0 rainy days (ERA5)1982: 30.3 mm, 3 rainy days (ERA5)1983: 9.5 mm, 0 rainy days (ERA5)1984: 2.9 mm, 0 rainy days (ERA5)1985: 19.3 mm, 3 rainy days (ERA5)1986: 9.9 mm, 2 rainy days (ERA5)1987: 32.2 mm, 3 rainy days (ERA5)1988: 1.5 mm, 0 rainy days (ERA5)1989: 15.8 mm, 1 rainy days (ERA5)1990: 99.2 mm, 9 rainy days (ERA5)1991: 21.7 mm, 1 rainy days (ERA5)1992: 7.6 mm, 1 rainy days (ERA5)1993: 11.4 mm, 0 rainy days (ERA5)1994: 27 mm, 4 rainy days (ERA5)1995: 21.6 mm, 2 rainy days (ERA5)1996: 9.7 mm, 1 rainy days (ERA5)1997: 4.8 mm, 1 rainy days (ERA5)1998: 18.2 mm, 3 rainy days (ERA5)1999: 40.4 mm, 4 rainy days (ERA5)2000: 71.7 mm, 7 rainy days (ERA5)2001: 15.9 mm, 1 rainy days (ERA5)2002: 33.4 mm, 1 rainy days (ERA5)2003: 1.4 mm, 0 rainy days (ERA5)2004: 55.6 mm, 8 rainy days (ERA5)2005: 25.7 mm, 4 rainy days (ERA5)2006: 56.6 mm, 2 rainy days (ERA5)2007: 20.8 mm, 2 rainy days (ERA5)2008: 11.4 mm, 0 rainy days (ERA5)2009: 8.2 mm, 0 rainy days (ERA5)2010: 12.7 mm, 3 rainy days (ERA5)2011: 11.7 mm, 0 rainy days (ERA5)2012: 10.1 mm, 2 rainy days (ERA5)2013: 8.1 mm, 0 rainy days (ERA5)2014: 36.4 mm, 5 rainy days (ERA5)2015: 20.1 mm, 2 rainy days (ERA5)2016: 21.7 mm, 3 rainy days (ERA5)2017: 31.3 mm, 5 rainy days (ERA5)2018: 13.3 mm, 1 rainy days (ERA5)2019: 0 mm, 0 rainy days (ERA5)2020: 0.9 mm, 0 rainy days (ERA5)2021: 96 mm, 6 rainy days (ERA5)1981–2010 normal 23.4 mm19801990200020102020
Show the numbers
ERA5: May rainfall, 1980–2021
YearRain mmRainy days
19809.10
19815.60
198230.33
19839.50
19842.90
198519.33
19869.92
198732.23
19881.50
198915.81
199099.29
199121.71
19927.61
199311.40
1994274
199521.62
19969.71
19974.81
199818.23
199940.44
200071.77
200115.91
200233.41
20031.40
200455.68
200525.74
200656.62
200720.82
200811.40
20098.20
201012.73
201111.70
201210.12
20138.10
201436.45
201520.12
201621.73
201731.35
201813.31
201900
20200.90
2021966
Rainy day on ERA5 = 2.5 mm or more in the IST day, the same rule as the station.

Recent years: Earth Pulse record

Open-Meteo model before 10 Oct 2025, Baner Weather Union station from 10 Oct 2025 (see the source on each row)

Earth Pulse record: May temperature
Dot = monthly average; line = lowest to highest reading.
Open-Meteo model estimateBaner Weather Union station
May temperature, Earth Pulse record 2022–2026For each May from 2022 to 2026, a vertical line from the lowest to the highest temperature with a dot at the monthly average. 2022 average 28.1 °C (Open-Meteo model); 2023 average 27.8 °C (Open-Meteo model); 2024 average 29 °C (Open-Meteo model); 2025 average 26.4 °C (Open-Meteo model); 2026 average 30.8 °C (Baner station).15202530354045°C2022 (Open-Meteo model): average 28.1 °C, lowest 20.6 °C, highest 40.2 °C2022 (Open-Meteo model): average 28.1 °C, lowest 20.6 °C, highest 40.2 °C28.120222023 (Open-Meteo model): average 27.8 °C, lowest 18.9 °C, highest 40.3 °C2023 (Open-Meteo model): average 27.8 °C, lowest 18.9 °C, highest 40.3 °C27.820232024 (Open-Meteo model): average 29 °C, lowest 19 °C, highest 41.5 °C2024 (Open-Meteo model): average 29 °C, lowest 19 °C, highest 41.5 °C2920242025 (Open-Meteo model): average 26.4 °C, lowest 20.5 °C, highest 39.5 °C2025 (Open-Meteo model): average 26.4 °C, lowest 20.5 °C, highest 39.5 °C26.420252026 (Baner station): average 30.8 °C, lowest 21.9 °C, highest 41.2 °C2026 (Baner station): average 30.8 °C, lowest 21.9 °C, highest 41.2 °C30.82026
Show the numbers
Earth Pulse record: May temperature
YearSourceAverage °CLowest °CHighest °C
2022Open-Meteo model28.120.640.2
2023Open-Meteo model27.818.940.3
2024Open-Meteo model291941.5
2025Open-Meteo model26.420.539.5
2026Baner station30.821.941.2
Colour shows the source. Open-Meteo is a model estimate (before 10 Oct 2025); the station is a measurement at Baner. A change between the two colours is a change of instrument, not a trend.
Earth Pulse record: May rainfall
Month total in mm; colour shows the source.
Open-Meteo model estimateBaner Weather Union station
May rainfall, Earth Pulse record 2022–2026Bar chart of May rain totals: 2022 5.5 mm (Open-Meteo model); 2023 18.7 mm (Open-Meteo model); 2024 37.8 mm (Open-Meteo model); 2025 255.3 mm (Open-Meteo model); 2026 40.4 mm (Baner station).050100150200250300mm (month total)2022 (Open-Meteo model): 5.5 mm, 1 rainy days620222023 (Open-Meteo model): 18.7 mm, 2 rainy days1920232024 (Open-Meteo model): 37.8 mm, 5 rainy days3820242025 (Open-Meteo model): 255.3 mm, 15 rainy days25520252026 (Baner station): 40.4 mm, 2 rainy days402026
Show the numbers
Earth Pulse record: May rainfall
YearSourceRain mmRainy days
2022Open-Meteo model5.51
2023Open-Meteo model18.72
2024Open-Meteo model37.85
2025Open-Meteo model255.315
2026Baner station40.42
Rain totals add up all rain; a rainy day is 2.5 mm or more in the IST day.

Air quality, same month, last 5 years

EU AQI, lower = cleaner by year
YearAvg AQIRangeClean days (≤ 40)High days (≥ 61)Complete days
2026 ★45.913–7461631
202543.416–8181331
202458.829–8212431
202354.920–8122531
2022——–—0031

EU AQI, lower = cleaner. Daily cache (ep_daily_climate). aqi_avg is the average of daily means. Clean day = the day's worst hour stayed at EU AQI 40 or below; high-pollution day = the worst hour reached 61 or more. Bar: share of clean days (green) and high-pollution days (red).

Records

Records and ranks

Days that stood out in May 2026

  • Hottest day: 10 May 2026, 41.2 °C
  • Coolest night: 22 May 2026, 21.9 °C
  • Rainiest day: 22 May 2026, 33.8 mm
  • Cleanest air: 24 May 2026, daily-average EU AQI 22.6
  • Haziest air: 8 May 2026, daily-average EU AQI 72.1

How this May ranks

  • Average AQI: the 2nd lowest (cleanest) of 4 Mays held by Earth Pulse.

Temperature and rain are not ranked: earlier years come from a different source (Open-Meteo model vs station).

Same calendar month across the sensor years held (up to the last 4 years plus this one). Rank 1 = lowest value. ERA5 is never ranked together with these.

On ERA5 (a separate record, 1980–2021) the warmest May was 1998 and the wettest 1990. ERA5 is never ranked together with Earth Pulse values.

Looking ahead · not a forecast

What a typical June looks like

Mean temperature
25 °C
average daily max 29 °C, min 22.5 °C
Rain
219 mm
on about 17 rainy days (2.5 mm or more)

ERA5 reanalysis normal 1981-2010 for the coming month. A long-term average, not a forecast. ERA5 runs cooler than a station near the city, so read these as the shape of the season rather than a number to expect on the Baner gauge.

Questions people ask

May 2026 in Baner: frequently asked questions

What was the air quality in Baner, Pune in May 2026?

The average EU AQI in Baner in May 2026 was 45.9 (range 13–74; lower is cleaner), cleaner than April 2026 (65.6). 6 of 31 complete days were clean-air days, meaning the worst hour stayed at EU AQI 40 or below, and 16 were high-pollution days (worst hour 61 or more). Counting daily averages instead, 42% of days averaged EU AQI 40 or below.

How much rain fell in Baner in May 2026?

Baner received 40.4 mm of rain in May 2026 (Baner Weather Union station), wetter than April 2026 (37.8 mm). 2 days were rainy days under the IMD rule of 2.5 mm or more in an IST day; 3 days had at least 0.3 mm. The wettest day was 22 May 2026 with 33.8 mm.

How hot was Baner in May 2026?

Temperatures in Baner ranged from 21.9 °C to 41.2 °C in May 2026, with a monthly average of 30.8 °C (Baner Weather Union station). That was warmer than April 2026 (30.7 °C); the hottest day was 10 May 2026 at 41.2 °C. May 2025 averaged 26.4 °C, but that value is an Open-Meteo model estimate, so the year-on-year gap is not a trend.

Which birds were heard on Baner Hill in May 2026?

BirdNET confirmed 49 bird species from 5,296 detections at confidence 0.70 or higher on Baner Hill in May 2026. The most active confirmed species was the Asian Koel (4,146 detections), and birds called most at 06:00 IST. Counting every recorded detection, including lower-confidence candidates, there were 116 candidate species in 27,758 detections.

How natural did Baner Hill sound in May 2026?

The mean soundscape index (NDSI, 0 to 1; higher means more natural sound relative to human noise) was 0.373 in May 2026, with a median of 0.364 from 892 valid readings. That is similar to April 2026 (mean 0.378).

How does May 2026 compare with the long-term climate in Baner?

On ERA5 reanalysis (Copernicus / ECMWF), the 1981–2010 normal for May in the Baner grid cell is 27.6 °C with 23.4 mm of rain. Compared with itself, ERA5 changed by +0.51 °C between 1981–90 and 2012–21. ERA5 is a 30 km model grid, so it is shown beside this month's readings (30.8 °C, 40.4 mm), not subtracted from them.

Week by week

Weekly reports for May 2026

Week of 27 Apr – 3 MayWeek of 4 May – 10 MayWeek of 9 May – 9 MayWeek of 11 May – 17 MayWeek of 18 May – 24 MayWeek of 25 May – 31 May

Methods & definitions

How this report was made

Definitions

  • Rainy day: 2.5 mm or more of rain in the IST calendar day (India Meteorological Department). Less than 0.3 mm is a trace and counts as dry. The month's rain total still adds up every drop.
  • Clean-air day: the day's worst hour stayed at European AQI 40 or below. High-pollution day: the worst hour reached EU AQI 61 or more. Only days with at least 18 hourly readings count.
  • Confirmed bird: a BirdNET detection with confidence 0.70 or higher. Tiers (0.70, 0.50, 0.30, 0.15) are nested: each includes the higher ones.
  • Species momentum: "more" or "less active" needs a change of at least 25% and at least 5 detections; otherwise "stable".
  • Soundscape (NDSI): readings outside 0–1 are calibration errors and are dropped; a change in the monthly mean smaller than 0.02 is "similar".
  • Model vs station: temperature and rain before 10 Oct 2025 are Open-Meteo model estimates; from then on they are Baner Weather Union station readings. ERA5 is a third, separate record.

Sources

  • Air quality, temperature, humidity and rain: Earth Pulse daily cache (ep_daily_climate). Temperature and rain are Open-Meteo model estimates before 10 Oct 2025 and Baner Weather Union station readings from then.
  • Birds: BirdNET acoustic AI on the Baner Hill node. Monitoring began in March 2026; earlier months have no bird data. Headline numbers count detections at confidence 0.70 or higher; lower tiers are nested.
  • Soundscape: NDSI readings from the Baner Hill node, keeping 0 to 1 only.
  • Long-term context: ERA5 reanalysis (Copernicus / ECMWF), 1980-2021, 42 years. A model, not a station; compared only with itself.

Notes

  • The share of clean days uses the daily-average AQI (EU scale). Older posts counted the share of hours.
  • Hottest, coolest and rainiest days come from the daily cache and can differ by rounding from hourly readings.
  • Pulse Score = 0.4 x (100 - average AQI) + 0.3 x min(100, confirmed detections / 8) + 0.3 x share of clean days.

ERA5: contains modified Copernicus Climate Change Service information (1980-2021). Neither the European Commission nor ECMWF is responsible for any use of it.

Time zone: Asia/Kolkata (IST); a month runs from 00:00 IST on the 1st to 00:00 IST on the 1st of the next month. Figures computed by the Earth Pulse Worker (data 2026.10.06-r3-monthly-seo); the written story is generated by AI from those figures only.

Reuse

Cite this page

Earth Pulse (2026). May 2026 in Baner — Air, Birds & Weather. Earth Pulse monthly report, Baner, Pune, India. Published 6 October 2026. https://www.earth-pulse.org/blog/2026/may.html

Data are citizen-science observations from one site; please cite the page and state the source labels (station, Open-Meteo model, ERA5) when you reuse a number.

Licence: Earth Pulse's own observations on this page are shared under CC BY-NC 4.0 (credit Earth Pulse; no commercial use without permission). ERA5 values contain modified Copernicus Climate Change Service information; Open-Meteo and Weather Union data keep their own terms.

May 2026 presented a complex environmental picture with shifts in air quality and temperature.
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