City report · Bihar, India
Gaya Air quality today
Air quality in Gaya currently reads AQI 165 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 165
Unhealthy
- PM2.5, fine particles (µg/m³)
- 74.9
- tree cover
- 25.0%
- trees in this area
- 78.1K
- more trees needed
- 46.8K
Measured across a 2 km radius around Purani Godaam, Dulhingunj, Gaya, Bihar 823001, India (12.57 km²), from a satellite image of Oct 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Gaya · AQI 165 (Unhealthy)
Gaya's tree count comes to 78,069 trees across 12.49 km² of land, 15 points below the 40% tree-cover level considered healthy for this area, so roughly 46,841 more trees would close the gap.
Air quality detail
Air quality in Gaya today: AQI 165, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Collectorate, Gaya - BSPCB, 500 m away · median of 3 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
74.9
PM10
90.6
NO₂
13.9
O₃
26.9
SO₂
18.9
CO
0.8
Data: OpenAQ · CPCB, Central Pollution Control Board, Government of India (GODL-India)
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Gaya's daily AQI at 174 on average, from 142 on Nov 4 to an hourly peak of 214 on Nov 6.
This is the US EPA AQI. How it differs from India's AQI (CPCB) · The full guide
Where Gaya stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gaya: Below target
25.0% tree cover against a 40% healthy-neighborhood target, across 12.49 km² of land.
Trees in this area
78,069
Target trees
124,910
More trees needed
46,841
CO₂ if planted / yr
1,031 t
Deforestation · 2001–2025
How much forest has Gaya lost?
There was almost no forest around Gaya in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 291 ha
- Forest in 2020
- 332 ha
- Overall change
- +41 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gaya grew from about 291 hectares to 332 hectares, a net gain of about 41 hectares (+14%). New forest grew on about 43 hectares, while 2 hectares were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Gaya
Same 2 km radius, same index — so they compare directly.
- Jahānābād46.4 km
India
- Tree cover
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- Air quality
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- Aurangābād63.8 km
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- Tree cover
- 22%
- Air quality
- 158
- Bihār Sharīf69.0 km
India
- Tree cover
- 25%
- Air quality
- 208
- Madhurampur Dehri83.7 km
India
- Tree cover
- 18%
- Air quality
- 92
- Patna89.6 km
India
- Tree cover
- 19%
- Air quality
- 189
- Arrah91.1 km
India
- Tree cover
- 32%
- Air quality
- 184
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Frequently asked
Questions about Gaya
What is the air quality (AQI) in Gaya right now?
The latest reading for Gaya shows an AQI of 165 (Unhealthy), measured Nov 11, 21:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Collectorate, Gaya - BSPCB, 500 m away). The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Gaya today?
At AQI 165 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Gaya been like this week?
Over the last 7 days, the CAMS air-quality model put Gaya's daily AQI at 174 on average, from 142 on Nov 4 to an hourly peak of 214 on Nov 6. On 7 of those days the average was above 100, unhealthy for sensitive groups.
Is Gaya's AQI the same as India's AQI (CPCB)?
No. Airleaf shows the US EPA Air Quality Index (AQI), the scale used by IQAir and most air-quality apps. India's Central Pollution Control Board (CPCB) publishes the National Air Quality Index on its own scale: 0–50 good, 51–100 satisfactory, 101–200 moderate, 201–300 poor, 301–400 very poor and 401–500 severe. The two scales don't line up. At moderate fine-particle levels the US scale reads higher: 55 µg/m³ of PM2.5 is 149 on the US AQI but about 92, "satisfactory", on India's. In heavy smog India's reads higher: 100 µg/m³ is 182 on the US AQI and about 232, "poor", on India's. CPCB also averages particles over 24 hours, so its figure moves more slowly than an hourly reading.
How much forest has the area around Gaya lost since 2001?
There was almost no forest around Gaya in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here. Comparing satellite maps from 2000 and 2020, the forest around Gaya grew from about 291 hectares to 332 hectares, a net gain of about 41 hectares (+14%). New forest grew on about 43 hectares, while 2 hectares were lost.
What is the tree count in Gaya?
Gaya has an estimated 78,069 trees across the 12.49 km² of land measured — 25.0% tree cover, 15 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Gaya need?
Gaya needs roughly 46,841 more trees to close a 15-point shortfall against its 40% tree-cover target — about 1,031 t of extra CO₂ absorbed per year once grown.
How are Gaya's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Purani Godaam, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 2 km radius around Purani Godaam; the tree count is an estimate derived from that cover.
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