City report · Chittagong, Bangladesh
Comilla Air quality today
Air quality in Comilla currently reads AQI 64 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 64
Moderate
- PM2.5, fine particles (µg/m³)
- 15.2
- tree cover
- 41.0%
- trees in this area
- 127K
- more trees needed
- 0
Measured across a 2 km radius around Cumilla, Bangladesh (12.57 km²), from a satellite image of Nov 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Comilla · AQI 64 (Moderate)
Comilla's tree count comes to 126,744 trees across 12.37 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Comilla today: AQI 64, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 85 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 85 km, e.g. Sonargaon and Narsingdi
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
15.2
PM10
25.8
NO₂
11.3
O₃
64.0
SO₂
2.6
CO
312.0
- 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 Comilla's daily AQI at 129 on average, from 83 on Nov 11 to an hourly peak of 189 on Nov 8.
Where Comilla stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Comilla: Healthy tree cover
41.0% tree cover against a 30% healthy-neighborhood target, across 12.37 km² of land.
Trees in this area
126,744
Target trees
126,744
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Comilla lost?
Since 2001, the area within 10 km of Comilla has lost about 257 hectares of forest (about 360 football pitches): 17% of the forest it had in 2000. Most of it (52%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from January 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 257 haabout 360 football pitches
- Share of its forest
- 17%of what there was in 2000
- Cleared for good
- 134 hadeforestation: turned into farms, mines or towns
The worst year was 2023, when about 45 hectares of forest were lost.
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 | 2 ha | 2 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | under 1 ha | 2 ha | 3 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | 7 ha | 3 ha | 10 ha |
| 2009 | 3 ha | 4 ha | 7 ha |
| 2010 | 4 ha | 2 ha | 5 ha |
| 2011 | 8 ha | 3 ha | 11 ha |
| 2012 | 2 ha | 1 ha | 3 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 3 ha | 1 ha | 4 ha |
| 2017 | 5 ha | 3 ha | 7 ha |
| 2018 | 3 ha | 3 ha | 6 ha |
| 2019 | 3 ha | 11 ha | 14 ha |
| 2020 | 5 ha | 7 ha | 11 ha |
| 2021 | 4 ha | 21 ha | 25 ha |
| 2022 | 22 ha | 20 ha | 42 ha |
| 2023 | 32 ha | 13 ha | 45 ha |
| 2024 | 11 ha | 17 ha | 28 ha |
| 2025 | 14 ha | 9 ha | 23 ha |
What is causing deforestation around Comilla?
- Loggingcan grow back48% · 122 ha
- Farms, pasture and plantationscleared for good38% · 98 ha
- Towns and roadscleared for good14% · 36 ha
Also: unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 10,400 ha
- Forest in 2020
- 11,900 ha
- Overall change
- +1,490 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Comilla grew from about 10,400 hectares to 11,900 hectares, a net gain of about 1,490 hectares (+14%). New forest grew on about 1,610 hectares, while 118 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 Comilla
Same 2 km radius, same index — so they compare directly.
- Agartala42.7 km
India
- Tree cover
- 28%
- Air quality
- 29
- Brāhmanbāria57.5 km
Bangladesh
- Tree cover
- 46%
- Air quality
- 64
- Chāndpur60.1 km
Bangladesh
- Tree cover
- 54%
- Air quality
- 74
- Sonārgaon61.6 km
Bangladesh
- Tree cover
- 66%
- Air quality
- 156
- Ashuganj City66.7 km
Bangladesh
- Tree cover
- 53%
- Air quality
- 123
- Maijdi66.8 km
Bangladesh
- Tree cover
- 72%
- Air quality
- 63
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Frequently asked
Questions about Comilla
What is the air quality (AQI) in Comilla right now?
The latest reading for Comilla shows an AQI of 64 (Moderate), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 85 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 Comilla today?
At AQI 64 (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 Comilla been like this week?
Over the last 7 days, the CAMS air-quality model put Comilla's daily AQI at 129 on average, from 83 on Nov 11 to an hourly peak of 189 on Nov 8. On 6 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Comilla lost since 2001?
Since 2001, the area within 10 km of Comilla has lost about 257 hectares of forest (about 360 football pitches): 17% of the forest it had in 2000. Most of it (52%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Comilla grew from about 10,400 hectares to 11,900 hectares, a net gain of about 1,490 hectares (+14%). New forest grew on about 1,610 hectares, while 118 hectares were lost.
What is the tree count in Comilla?
Comilla has an estimated 126,744 trees across the 12.37 km² of land measured — 41.0% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Comilla need?
Comilla has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Comilla'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 Cumilla; the tree count is an estimate derived from that cover.
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