City report · Chongqing, China
Yongchuan Air quality today
Air quality in Yongchuan currently reads AQI 154 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 154
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 59.4
- tree cover
- 38.5%
- trees in this area
- 121K
- more trees needed
- 4.7K
Measured across a 2 km radius around Yongchuan 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.
Yongchuan · AQI 154 (Unhealthy)
Yongchuan's tree count comes to 120,830 trees across 12.56 km² of land, 2 points below the 40% tree-cover level considered healthy for this area, so roughly 4,708 more trees would close the gap.
Air quality detail
Air quality in Yongchuan today: AQI 154, Unhealthy
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 · North Hill Road, Chongqing (重庆北山路), 400 m away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
59.4
PM10
75.2
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
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Yongchuan's daily AQI at 110 on average, from 74 on Nov 8 to an hourly peak of 161 on Nov 7.
Where Yongchuan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yongchuan: Below target
38.5% tree cover against a 40% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
120,830
Target trees
125,538
More trees needed
4,708
CO₂ if planted / yr
103.6 t
Deforestation · 2001–2025
How much forest has Yongchuan lost?
Since 2001, the area within 10 km of Yongchuan has lost about 297 hectares of forest (about 420 football pitches): 5.4% of the forest it had in 2000. The biggest cause was logging (47%), after which forest can grow back. About 148 hectares (50%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km west of the city center.
- Forest lost since 2001
- 297 haabout 420 football pitches
- Share of its forest
- 5.4%of what there was in 2000
- Cleared for good
- 148 hadeforestation: turned into farms, mines or towns
The worst year was 2018, when about 40 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 | 2 ha | 2 ha |
| 2003 | under 1 ha | 6 ha | 6 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 | 1 ha |
| 2007 | under 1 ha | 2 ha | 2 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 5 ha | 3 ha | 7 ha |
| 2010 | 1 ha | 1 ha | 2 ha |
| 2011 | under 1 ha | 4 ha | 5 ha |
| 2012 | 5 ha | 19 ha | 24 ha |
| 2013 | 11 ha | 20 ha | 30 ha |
| 2014 | 5 ha | 7 ha | 12 ha |
| 2015 | 4 ha | under 1 ha | 4 ha |
| 2016 | 22 ha | 9 ha | 31 ha |
| 2017 | 5 ha | 2 ha | 7 ha |
| 2018 | 14 ha | 26 ha | 40 ha |
| 2019 | 2 ha | 12 ha | 14 ha |
| 2020 | 12 ha | 8 ha | 20 ha |
| 2021 | 8 ha | 4 ha | 12 ha |
| 2022 | 10 ha | 1 ha | 11 ha |
| 2023 | 3 ha | 1 ha | 4 ha |
| 2024 | 29 ha | 6 ha | 36 ha |
| 2025 | 10 ha | 14 ha | 25 ha |
What is causing deforestation around Yongchuan?
- Loggingcan grow back47% · 141 ha
- Towns and roadscleared for good42% · 125 ha
- Farms, pasture and plantationscleared for good5.1% · 15 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
- 16,300 ha
- Forest in 2020
- 16,300 ha
- Overall change
- −3 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yongchuan stayed about the same size, at about 16,300 hectares: new forest grew on about 336 hectares, and about 339 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 Yongchuan
What is the air quality (AQI) in Yongchuan right now?
The latest reading for Yongchuan shows an AQI of 154 (Unhealthy), measured Nov 11, 23:00 local time by the North Hill Road, Chongqing (重庆北山路) ground monitoring station, 400 m away, via OpenAQ. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Yongchuan today?
At AQI 154 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Yongchuan been like this week?
Over the last 7 days, the CAMS air-quality model put Yongchuan's daily AQI at 110 on average, from 74 on Nov 8 to an hourly peak of 161 on Nov 7. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Yongchuan lost since 2001?
Since 2001, the area within 10 km of Yongchuan has lost about 297 hectares of forest (about 420 football pitches): 5.4% of the forest it had in 2000. The biggest cause was logging (47%), after which forest can grow back. About 148 hectares (50%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Yongchuan stayed about the same size, at about 16,300 hectares: new forest grew on about 336 hectares, and about 339 hectares were lost.
What is the tree count in Yongchuan?
Yongchuan has an estimated 120,830 trees across the 12.56 km² of land measured — 38.5% tree cover, 2 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Yongchuan need?
Yongchuan needs roughly 4,708 more trees to close a 2-point shortfall against its 40% tree-cover target — about 103.6 t of extra CO₂ absorbed per year once grown.
How are Yongchuan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Yongchuan 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 Yongchuan District; the tree count is an estimate derived from that cover.
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