City report · Chongqing, China
Banan Air quality today
Air quality in Banan currently reads AQI 132 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 132
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 48.1
- tree cover
- 41.3%
- trees in this area
- 123K
- more trees needed
- 0
Measured across a 2 km radius around Banan, Chongqing, China (12.57 km²), from a satellite image of Aug 27, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Banan · AQI 132 (Unhealthy for sensitive groups)
Banan's tree count comes to 122,741 trees across 11.89 km² of land, already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Banan today: AQI 132, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · lóng zhōu wān, Chongqing (重庆龙洲湾), 2.6 km away · median of 3 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
48.1
PM10
67.1
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Chongqing Environmental Protection Bureau (重庆市主城区空气质量)
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Banan's daily AQI at 115 on average, from 81 on Nov 8 to an hourly peak of 168 on Nov 7.
Where Banan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Banan: Healthy tree cover
41.3% tree cover against a 35% healthy-neighborhood target, across 11.89 km² of land.
Trees in this area
122,741
Target trees
122,741
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Banan lost?
Since 2001, the area within 10 km of Banan has lost about 845 hectares of forest (about 1,200 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 189 hectares (22%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 4 km southeast of the city center.
- Forest lost since 2001
- 845 haabout 1,200 football pitches
- Share of its forest
- 14%of what there was in 2000
- Cleared for good
- 189 hadeforestation: turned into farms, mines or towns
Forest loss is speeding up: about 139 hectares a year in 2021–2025, up from 17 hectares a year in 2016–2020. The worst year was 2023, when about 620 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 | under 1 ha | under 1 ha | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 12 ha | 3 ha | 15 ha |
| 2005 | 3 ha | 3 ha | 6 ha |
| 2006 | 1 ha | under 1 ha | 1 ha |
| 2007 | 3 ha | 2 ha | 5 ha |
| 2008 | under 1 ha | under 1 ha | 1 ha |
| 2009 | 6 ha | 3 ha | 9 ha |
| 2010 | 11 ha | 2 ha | 12 ha |
| 2011 | 3 ha | under 1 ha | 4 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | 1 ha | under 1 ha | 2 ha |
| 2014 | 2 ha | 1 ha | 3 ha |
| 2015 | 6 ha | 1 ha | 7 ha |
| 2016 | 9 ha | 5 ha | 14 ha |
| 2017 | 32 ha | 10 ha | 42 ha |
| 2018 | 17 ha | 1 ha | 18 ha |
| 2019 | 5 ha | under 1 ha | 5 ha |
| 2020 | 2 ha | 2 ha | 4 ha |
| 2021 | 9 ha | under 1 ha | 10 ha |
| 2022 | 14 ha | 3 ha | 17 ha |
| 2023 | 13 ha | 607 ha | 620 ha |
| 2024 | 24 ha | 5 ha | 29 ha |
| 2025 | 14 ha | 5 ha | 19 ha |
What is causing deforestation around Banan?
- Loggingcan grow back77% · 648 ha
- Towns and roadscleared for good19% · 160 ha
- Farms, pasture and plantationscleared for good3.5% · 29 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
- 17,000 ha
- Forest in 2020
- 16,900 ha
- Overall change
- −155 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Banan stayed about the same size, at about 16,900 hectares: new forest grew on about 274 hectares, and about 430 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 Banan
What is the air quality (AQI) in Banan right now?
The latest reading for Banan shows an AQI of 132 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is lóng zhōu wān, Chongqing (重庆龙洲湾), 2.6 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Banan today?
At AQI 132 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Banan been like this week?
Over the last 7 days, the CAMS air-quality model put Banan's daily AQI at 115 on average, from 81 on Nov 8 to an hourly peak of 168 on Nov 7. On 4 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Banan lost since 2001?
Since 2001, the area within 10 km of Banan has lost about 845 hectares of forest (about 1,200 football pitches): 14% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 189 hectares (22%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is speeding up: about 139 hectares a year in 2021–2025, up from 17 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Banan stayed about the same size, at about 16,900 hectares: new forest grew on about 274 hectares, and about 430 hectares were lost.
What is the tree count in Banan?
Banan has an estimated 122,741 trees across the 11.89 km² of land measured — 41.3% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Banan need?
Banan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Banan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Banan, 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 Banan; the tree count is an estimate derived from that cover.
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