City report · West Bengal, India
Krishnanagar Air quality today
Air quality in Krishnanagar currently reads AQI 91 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 91
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 32.7
- tree cover
- 55.8%
- trees in this area
- 171K
- more trees needed
- 0
Measured across a 2 km radius around Krishnanagar, West Bengal, India (12.57 km²), from a satellite image of Oct 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Krishnanagar · AQI 91 (Moderate)
Krishnanagar's tree count comes to 171,269 trees across 12.28 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Krishnanagar today: AQI 91, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 03:30 local time via Open-Meteo / CAMS, corrected with 25 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 25 station cities within 225 km, e.g. Kalyani and Bhatpara
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
32.7
PM10
78.9
NO₂
23.4
O₃
57.0
SO₂
13.6
CO
1140.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Krishnanagar's daily AQI at 167 on average, from 132 on Nov 9 to an hourly peak of 230 on Nov 8.
This is the US EPA AQI. How it differs from India's AQI (CPCB) · The full guide
Where Krishnanagar stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Krishnanagar: Healthy tree cover
55.8% tree cover against a 30% healthy-neighborhood target, across 12.28 km² of land.
Trees in this area
171,269
Target trees
171,269
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Krishnanagar lost?
There was very little forest around Krishnanagar in 2000, about 88 hectares, and about 2 hectares of it has been lost 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 February 2017 of a 5 × 5 km area in the city center.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
Forest gained and lost, 2000–2020
- Forest in 2000
- 5,640 ha
- Forest in 2020
- 6,450 ha
- Overall change
- +802 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Krishnanagar grew from about 5,640 hectares to 6,450 hectares, a net gain of about 802 hectares (+14%). New forest grew on about 817 hectares, while 16 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 Krishnanagar
What is the air quality (AQI) in Krishnanagar right now?
The latest reading for Krishnanagar shows an AQI of 91 (Moderate), observed Nov 11, 03:30 local time via Open-Meteo / CAMS, corrected with 25 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Krishnanagar today?
At AQI 91 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Krishnanagar been like this week?
Over the last 7 days, the CAMS air-quality model put Krishnanagar's daily AQI at 167 on average, from 132 on Nov 9 to an hourly peak of 230 on Nov 8. On 7 of those days the average was above 100, unhealthy for sensitive groups.
Is Krishnanagar'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 Krishnanagar lost since 2001?
There was very little forest around Krishnanagar in 2000, about 88 hectares, and about 2 hectares of it has been lost 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 Krishnanagar grew from about 5,640 hectares to 6,450 hectares, a net gain of about 802 hectares (+14%). New forest grew on about 817 hectares, while 16 hectares were lost.
What is the tree count in Krishnanagar?
Krishnanagar has an estimated 171,269 trees across the 12.28 km² of land measured — 55.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Krishnanagar need?
Krishnanagar has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Krishnanagar's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Krishnanagar; the tree count is an estimate derived from that cover.
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