City report · Chongqing, China
Yong’an Air quality today
Air quality in Yong’an currently reads AQI 80 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 80
Moderate
- PM2.5, fine particles (µg/m³)
- 25.7
- tree cover
- 45.8%
- trees in this area
- 101K
- more trees needed
- 0
Measured across a 2 km radius around Fengjie County, Chongqing, China (12.57 km²), from a satellite image of Sep 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yong’an · AQI 80 (Moderate)
Yong’an's tree count comes to 100,863 trees across 8.81 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Yong’an today: AQI 80, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 01:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 205 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 205 km, e.g. Kaizhou District, Chongqing, China and Wanzhou District, Chongqing, China
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
25.7
PM10
36.1
NO₂
34.0
O₃
44.0
SO₂
8.5
CO
436.0
- 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 Yong’an's daily AQI at 71 on average, from 46 on Nov 9 to an hourly peak of 137 on Nov 5.
Where Yong’an stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yong’an: Healthy tree cover
45.8% tree cover against a 30% healthy-neighborhood target, across 8.81 km² of land.
Trees in this area
100,863
Target trees
100,863
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Yong’an lost?
Since 2001, the area within 10 km of Yong’an has lost about 121 hectares of forest (about 170 football pitches): 2.5% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 121 haabout 170 football pitches
- Share of its forest
- 2.5%of what there was in 2000
- Cleared for good
- 97 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 35 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 | 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 | 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | 1 ha |
| 2013 | 1 ha | under 1 ha | 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 1 ha | under 1 ha | 1 ha |
| 2016 | 5 ha | under 1 ha | 5 ha |
| 2017 | 30 ha | 6 ha | 35 ha |
| 2018 | 1 ha | under 1 ha | 2 ha |
| 2019 | 6 ha | under 1 ha | 6 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | 2 ha | under 1 ha | 3 ha |
| 2022 | 11 ha | 3 ha | 14 ha |
| 2023 | 2 ha | under 1 ha | 2 ha |
| 2024 | 16 ha | 3 ha | 19 ha |
| 2025 | 16 ha | 11 ha | 26 ha |
What is causing deforestation around Yong’an?
- Farms, pasture and plantationscleared for good48% · 59 ha
- Towns and roadscleared for good31% · 38 ha
- Loggingcan grow back6.9% · 8 ha
Also: 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
- 17,400 ha
- Forest in 2020
- 17,700 ha
- Overall change
- +314 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yong’an stayed about the same size, at about 17,700 hectares: new forest grew on about 571 hectares, and about 257 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 Yong’an
What is the air quality (AQI) in Yong’an right now?
The latest reading for Yong’an shows an AQI of 80 (Moderate), observed Nov 11, 01:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 205 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 Yong’an today?
At AQI 80 (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 Yong’an been like this week?
Over the last 7 days, the CAMS air-quality model put Yong’an's daily AQI at 71 on average, from 46 on Nov 9 to an hourly peak of 137 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Yong’an lost since 2001?
Since 2001, the area within 10 km of Yong’an has lost about 121 hectares of forest (about 170 football pitches): 2.5% of the forest it had in 2000. Most of it (80%) was deforestation, forest cleared for good, mainly for farms, pasture and plantations. Comparing satellite maps from 2000 and 2020, the forest around Yong’an stayed about the same size, at about 17,700 hectares: new forest grew on about 571 hectares, and about 257 hectares were lost.
What is the tree count in Yong’an?
Yong’an has an estimated 100,863 trees across the 8.81 km² of land measured — 45.8% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Yong’an need?
Yong’an has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Yong’an'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 Fengjie County; the tree count is an estimate derived from that cover.
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