City report · Chongqing, China
Wansheng Air quality today
Air quality in Wansheng currently reads AQI 85 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 85
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 27.5
- tree cover
- 65.5%
- trees in this area
- 206K
- more trees needed
- 0
Measured across a 2 km radius around Qijiang District, Chongqing, China (12.57 km²), from a satellite image of Sep 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Wansheng · AQI 85 (Moderate)
Wansheng's tree count comes to 205,774 trees across 12.57 km², already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Wansheng today: AQI 85, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · wàn dōngběi lù, Chongqing (重庆万东北路), 700 m away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
27.5
PM10
43.2
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
- 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 Wansheng's daily AQI at 80 on average, from 61 on Nov 7 to an hourly peak of 129 on Nov 10.
Where Wansheng stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Wansheng: Healthy tree cover
65.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
205,774
Target trees
205,774
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Wansheng lost?
Since 2001, the area within 10 km of Wansheng has lost about 743 hectares of forest (about 1,000 football pitches): 4.4% of the forest it had in 2000. Most of it (71%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from October 2017 of a 5 × 5 km area about 7 km northeast of the city center.
- Forest lost since 2001
- 743 haabout 1,000 football pitches
- Share of its forest
- 4.4%of what there was in 2000
- Cleared for good
- 530 hadeforestation: turned into farms, mines or towns
Forest loss has stayed about the same: about 63 hectares a year in 2021–2025, against 52 hectares a year in 2016–2020. The worst year was 2016, when about 105 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 | under 1 ha |
| 2003 | 8 ha | under 1 ha | 8 ha |
| 2004 | 8 ha | under 1 ha | 8 ha |
| 2005 | 3 ha | 1 ha | 4 ha |
| 2006 | 2 ha | under 1 ha | 2 ha |
| 2007 | 6 ha | 2 ha | 8 ha |
| 2008 | 2 ha | under 1 ha | 2 ha |
| 2009 | 7 ha | 8 ha | 14 ha |
| 2010 | 5 ha | 5 ha | 10 ha |
| 2011 | 20 ha | 7 ha | 26 ha |
| 2012 | 4 ha | under 1 ha | 5 ha |
| 2013 | 24 ha | 1 ha | 26 ha |
| 2014 | 21 ha | 3 ha | 24 ha |
| 2015 | 27 ha | 6 ha | 33 ha |
| 2016 | 87 ha | 18 ha | 105 ha |
| 2017 | 72 ha | 16 ha | 88 ha |
| 2018 | 32 ha | 3 ha | 35 ha |
| 2019 | 14 ha | 2 ha | 16 ha |
| 2020 | 8 ha | 8 ha | 16 ha |
| 2021 | 13 ha | 24 ha | 37 ha |
| 2022 | 10 ha | 4 ha | 14 ha |
| 2023 | 30 ha | 39 ha | 69 ha |
| 2024 | 75 ha | 27 ha | 102 ha |
| 2025 | 52 ha | 40 ha | 92 ha |
What is causing deforestation around Wansheng?
- Towns and roadscleared for good54% · 400 ha
- Loggingcan grow back26% · 194 ha
- Farms, pasture and plantationscleared for good11% · 79 ha
Also: mining and energy, storms, floods and other natural causes, 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
- 27,300 ha
- Forest in 2020
- 27,000 ha
- Overall change
- −292 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Wansheng stayed about the same size, at about 27,000 hectares: new forest grew on about 108 hectares, and about 400 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 Wansheng
What is the air quality (AQI) in Wansheng right now?
The latest reading for Wansheng shows an AQI of 85 (Moderate), measured Nov 11, 23:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is wàn dōngběi lù, Chongqing (重庆万东北路), 700 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Wansheng today?
At AQI 85 (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 Wansheng been like this week?
Over the last 7 days, the CAMS air-quality model put Wansheng's daily AQI at 80 on average, from 61 on Nov 7 to an hourly peak of 129 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Wansheng lost since 2001?
Since 2001, the area within 10 km of Wansheng has lost about 743 hectares of forest (about 1,000 football pitches): 4.4% of the forest it had in 2000. Most of it (71%) was deforestation, forest cleared for good, mainly for towns and roads. Forest loss has stayed about the same: about 63 hectares a year in 2021–2025, against 52 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Wansheng stayed about the same size, at about 27,000 hectares: new forest grew on about 108 hectares, and about 400 hectares were lost.
What is the tree count in Wansheng?
Wansheng has an estimated 205,774 trees across the 12.57 km² measured — 65.5% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Wansheng need?
Wansheng has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Wansheng's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Qijiang District, 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 Qijiang District; the tree count is an estimate derived from that cover.
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