City report · Bihar, India
Chāpra Air quality today
Air quality in Chāpra currently reads AQI 151 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 151
Unhealthy
- PM2.5, fine particles (µg/m³)
- 56.0
- tree cover
- 28.2%
- trees in this area
- 82.7K
- more trees needed
- 34.6K
Measured across a 2 km radius around Sahebganj, Darshan Nagar, Chapra, Bihar 841301, India (12.57 km²), from a satellite image of Oct 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Chāpra · AQI 151 (Unhealthy)
Chāpra's tree count comes to 82,746 trees across 11.74 km² of land, 12 points below the 40% tree-cover level considered healthy for this area, so roughly 34,624 more trees would close the gap.
Air quality detail
Air quality in Chāpra today: AQI 151, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 20:15 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Darshan Nagar, Chhapra - BSPCB, 200 m away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
56.0
PM10
125.0
NO₂
2.5
O₃
7.7
SO₂
40.4
CO
0.5
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 Chāpra's daily AQI at 200 on average, from 181 on Nov 9 to an hourly peak of 266 on Nov 8.
This is the US EPA AQI. How it differs from India's AQI (CPCB) · The full guide
Where Chāpra stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chāpra: Below target
28.2% tree cover against a 40% healthy-neighborhood target, across 11.74 km² of land.
Trees in this area
82,746
Target trees
117,370
More trees needed
34,624
CO₂ if planted / yr
761.7 t
Deforestation · 2001–2025
How much forest has Chāpra lost?
There was almost no forest around Chāpra 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
- 316 ha
- Forest in 2020
- 400 ha
- Overall change
- +84 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chāpra grew from about 316 hectares to 400 hectares, a net gain of about 84 hectares (+27%). New forest grew on about 87 hectares, while 3 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
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Frequently asked
Questions about Chāpra
What is the air quality (AQI) in Chāpra right now?
The latest reading for Chāpra shows an AQI of 151 (Unhealthy), measured Nov 11, 20:15 local time by the Darshan Nagar, Chhapra - BSPCB ground monitoring station, 200 m away, via OpenAQ. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Chāpra today?
At AQI 151 (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 Chāpra been like this week?
Over the last 7 days, the CAMS air-quality model put Chāpra's daily AQI at 200 on average, from 181 on Nov 9 to an hourly peak of 266 on Nov 8. On 7 of those days the average was above 100, unhealthy for sensitive groups.
Is Chāpra'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 Chāpra lost since 2001?
There was almost no forest around Chāpra 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 Chāpra grew from about 316 hectares to 400 hectares, a net gain of about 84 hectares (+27%). New forest grew on about 87 hectares, while 3 hectares were lost.
What is the tree count in Chāpra?
Chāpra has an estimated 82,746 trees across the 11.74 km² of land measured — 28.2% tree cover, 12 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Chāpra need?
Chāpra needs roughly 34,624 more trees to close a 12-point shortfall against its 40% tree-cover target — about 761.7 t of extra CO₂ absorbed per year once grown.
How are Chāpra's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Sahebganj, 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 Sahebganj; the tree count is an estimate derived from that cover.
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