City report · Chongqing, China
Nanchuan Air quality today
Air quality in Nanchuan currently reads AQI 88 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 88
Moderate
- PM2.5, fine particles (µg/m³)
- 29.2
- tree cover
- 41.4%
- trees in this area
- 130K
- more trees needed
- 0
Measured across a 2 km radius around Nanchuan 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.
Nanchuan · AQI 88 (Moderate)
Nanchuan's tree count comes to 130,062 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 Nanchuan today: AQI 88, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · zhōnglóu dàjiē, Chongqing (重庆钟楼大街), 2 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.2
PM10
49.7
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 Nanchuan's daily AQI at 68 on average, from 52 on Nov 7 to an hourly peak of 112 on Nov 10.
Where Nanchuan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Nanchuan: Healthy tree cover
41.4% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
130,062
Target trees
130,062
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Nanchuan lost?
Since 2001, the area within 10 km of Nanchuan has lost about 484 hectares of forest (about 680 football pitches): 3% of the forest it had in 2000. Most of it (75%) 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 east of the city center.
- Forest lost since 2001
- 484 haabout 680 football pitches
- Share of its forest
- 3%of what there was in 2000
- Cleared for good
- 362 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 58 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 | 1 ha | under 1 ha | 2 ha |
| 2004 | 7 ha | 3 ha | 10 ha |
| 2005 | 2 ha | under 1 ha | 2 ha |
| 2006 | 4 ha | 19 ha | 23 ha |
| 2007 | 12 ha | 5 ha | 17 ha |
| 2008 | 5 ha | 5 ha | 11 ha |
| 2009 | 6 ha | 5 ha | 11 ha |
| 2010 | 3 ha | 3 ha | 6 ha |
| 2011 | 10 ha | 4 ha | 13 ha |
| 2012 | 2 ha | under 1 ha | 2 ha |
| 2013 | 5 ha | under 1 ha | 5 ha |
| 2014 | 2 ha | 1 ha | 4 ha |
| 2015 | 8 ha | under 1 ha | 9 ha |
| 2016 | 35 ha | 4 ha | 39 ha |
| 2017 | 42 ha | 4 ha | 46 ha |
| 2018 | 24 ha | under 1 ha | 24 ha |
| 2019 | 24 ha | 6 ha | 30 ha |
| 2020 | 29 ha | under 1 ha | 29 ha |
| 2021 | 42 ha | 1 ha | 43 ha |
| 2022 | 22 ha | 2 ha | 24 ha |
| 2023 | 19 ha | 10 ha | 29 ha |
| 2024 | 44 ha | 5 ha | 49 ha |
| 2025 | 14 ha | 44 ha | 58 ha |
What is causing deforestation around Nanchuan?
- Towns and roadscleared for good40% · 193 ha
- Farms, pasture and plantationscleared for good21% · 99 ha
- Loggingcan grow back16% · 79 ha
Also: mining and energy, wildfires, 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
- 23,900 ha
- Forest in 2020
- 23,700 ha
- Overall change
- −172 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Nanchuan stayed about the same size, at about 23,700 hectares: new forest grew on about 147 hectares, and about 320 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 Nanchuan
What is the air quality (AQI) in Nanchuan right now?
The latest reading for Nanchuan shows an AQI of 88 (Moderate), measured Nov 11, 21:00 local time by the zhōnglóu dàjiē, Chongqing (重庆钟楼大街) ground monitoring station, 2 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Nanchuan today?
At AQI 88 (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 Nanchuan been like this week?
Over the last 7 days, the CAMS air-quality model put Nanchuan's daily AQI at 68 on average, from 52 on Nov 7 to an hourly peak of 112 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 Nanchuan lost since 2001?
Since 2001, the area within 10 km of Nanchuan has lost about 484 hectares of forest (about 680 football pitches): 3% of the forest it had in 2000. Most of it (75%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Nanchuan stayed about the same size, at about 23,700 hectares: new forest grew on about 147 hectares, and about 320 hectares were lost.
What is the tree count in Nanchuan?
Nanchuan has an estimated 130,062 trees across the 12.57 km² measured — 41.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Nanchuan need?
Nanchuan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Nanchuan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Nanchuan 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 Nanchuan District; the tree count is an estimate derived from that cover.
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