The living pulse of Baner's environment
Real-time weather, air quality and bird biodiversity — the weather station every 10 minutes, air quality every hour, birds around the clock. 45 years of climate history, one hyperlocal observatory.
Loading…
Fetching conditions…
PM2.5: — · PM10: —What changed today
How today's readings compare to the same time yesterday.
Birds detected today
Identified from ambient audio using BirdNET — showing detections at 70%+ confidence only. 228 species are possible at these coordinates this season. Click any bird to learn more.
Insight of the day
26 October in Baner, since 1980
On a typical , Baner, Pune reaches about 29.8 °C by day and falls to about 19.0 °C at night, and at least 2.5 mm of rain falls on 10% of days in this week of the year (ERA5 reanalysis, 1981–2010). Below: the records for this date since 1980, and the same date in Earth Pulse's own measurements since 2022.
| Year | High | Low | Rain | Source |
|---|---|---|---|---|
| 2025 | 31.3°C | 22.2°C | 6.2 mm | Weather Union station |
| 2024 | 29.0°C | 17.8°C | 0.0 mm | Open-Meteo model |
| 2023 | 29.6°C | 19.8°C | 0.0 mm | Open-Meteo model |
| 2022 | 26.9°C | 16.2°C | 0.0 mm | Open-Meteo model |
ERA5 is a model reanalysis averaged over a grid cell roughly 30 km across, so it usually reads cooler than a sensor near the hill — compare numbers within one source, not across. Rainy day = at least 2.5 mm in a calendar day (India Meteorological Department).
The hill — then and now
The most recent daylight photo of Baner Hill, beside one from each of the three months before it, taken around midday so the light matches and only the hill changes. Each is annotated with the conditions at that moment.
This week at a glance
Hourly data for the past 7 days. Register free for full historical charts back to 1980.
This year in Baner
What the sky and the air have done since 1 January, using the same definitions the India Meteorological Department uses for rain.
Latest from Earth Pulse
Human-authored field sessions from the Hill Journal, plus auto-generated climate reports from the data — written from Baner Hill, not about it.
Unlock the full dataset
Register free to access hourly breakdowns, historical charts back to 1980, CSV downloads, and the full bird detection log.
Everything you want to know
About Earth Pulse
What is Earth Pulse?
Earth Pulse is an independent network of hyperlocal environmental observatories — each one listening to a forest, a hill, or a wetland continuously, for years. Node 001 is at Baner Hill, Pune, on the eastern edge of the Western Ghats UNESCO biodiversity hotspot. It has been running since January 2022.
The Baner node tracks air quality, hyperlocal weather, bird biodiversity, soundscape health, plant life and vegetation continuously, from two sensor nodes on two balconies facing the Sahyadri. The data it produces is the kind regional satellites and government monitors cannot: ground-level, continuous, and specific to this exact location.
Over time, this becomes more than data. It becomes memory, evidence, and a foundation for understanding how a place changes — open not just to researchers, but to any community curious about the land around them.
What we measure
Air quality — Hourly EU AQI (0–100, Copernicus CAMS via Open-Meteo) and India AQI (0–500, CPCB scale, Google Air Quality API) with PM2.5, PM10, NO₂, ozone, CO and SO₂. The two scales are stored side by side and never mixed or converted. Air quality record →
Hyperlocal weather — Temperature, humidity, wind and rainfall from Weather Union station ZWL008983, a physical automatic weather station about 2 km from the site, logged every 10 minutes since October 2025. Open-Meteo provides the modelled baseline from 2022. Temperature record →
45 years of climate history — ERA5 reanalysis from 1980 alongside live sensors from 2022, for this exact location — the same dataset used by IPCC researchers. Climate history →
Birds — BirdNET v2.4 by the Cornell Lab of Ornithology runs on two nodes, east- and south-facing, identifying species from ambient audio around the clock. Every detection is stored with its confidence score; this page shows only detections at 70% confidence or higher. All birds of Baner →
Soundscape & Bioacoustic Index — The Normalised Difference Soundscape Index (NDSI) measures the ratio of natural sound to human noise. The Baner Hill Bioacoustic Index turns it into a weekly 0–100 ecosystem health score.
Plants & vegetation — A growing Baner Hill plant database built with AI-assisted identification (PlantNet + Gemini), plus satellite NDVI from Landsat (1990+) and Sentinel-2 (2023+) tracking canopy health over three decades. Trees & plants →
The hardware
- Raspberry Pi 3B+ (baner_01) — primary node: hourly air quality logging, Weather Union logging every 10 minutes, nightly gap-filling, and BirdNET with a USB microphone facing east toward the Sahyadri foothills.
- Raspberry Pi 3B (baner_south_01) — south-facing balcony looking straight at Baner Hill: second BirdNET microphone, continuous NDSI soundscape index, weekly Bioacoustic Index.
- Two USB microphones — east- and south-facing, for dual-orientation acoustic coverage of the hill and the corridor beyond.
- Weather Union ZWL008983 — automatic weather station about 2 km away: temperature, humidity, wind speed and direction, rain intensity and accumulation (0.2 mm gauge resolution).
The platform
- Database: Supabase (PostgreSQL) — 42,229 hourly climate records, 2,92,323 weather station readings and 1,29,500 bird detections; 78 species confirmed at ≥70% confidence (175 candidates across all confidence levels).
- Built to scale: the database pre-computes every summary on a schedule, and a Cloudflare Worker publishes one small snapshot file every 10 minutes. Visitors read that file, so a thousand visitors cost the database the same as one.
- AI: Gemini 2.5 Flash Lite (insights, plant profiles) · BirdNET v2.4 (acoustic detection) · PlantNet + Trefle (plant identification)
- Storage & hosting: Cloudflare R2 for photos, audio and the data snapshot; static pages on Cloudflare Pages.
- Data licence: all environmental data is open under CC BY 4.0 — free for research, journalism and education.