City report · Sichuan, China
Leshan Air quality today
Air quality in Leshan currently reads AQI 105 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 105
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 37.0
- tree cover
- 55.6%
- trees in this area
- 141K
- more trees needed
- 0
Measured across a 2 km radius around Shizhong District, Leshan, Leshan, Sichuan, China (12.57 km²), from a satellite image of Sep 5, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Leshan · AQI 105 (Unhealthy for sensitive groups)
Leshan's tree count comes to 141,310 trees across 10.17 km² of land, already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Leshan today: AQI 105, Unhealthy for sensitive groups
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 · niú'ěr qiáo, Leshan (乐山牛耳桥), 2.5 km away · median of 2 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
37.0
PM10
60.5
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Sichuan Province Environmental Protection Agency (四川省环保重点城市环境空气质量实时监测结果)
- 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 Leshan's daily AQI at 110 on average, from 73 on Nov 8 to an hourly peak of 179 on Nov 6.
Where Leshan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Leshan: Healthy tree cover
55.6% tree cover against a 35% healthy-neighborhood target, across 10.17 km² of land.
Trees in this area
141,310
Target trees
141,310
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Leshan lost?
Since 2001, the area within 10 km of Leshan has lost about 1,510 hectares of forest (about 2,100 football pitches): 26% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 352 hectares (23%) 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 northeast of the city center.
- Forest lost since 2001
- 1,510 haabout 2,100 football pitches
- Share of its forest
- 26%of what there was in 2000
- Cleared for good
- 352 hadeforestation: turned into farms, mines or towns
Forest loss is slowing down: about 84 hectares a year in 2021–2025, down from 199 hectares a year in 2016–2020. The worst year was 2017, when about 471 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 | 1 ha | 2 ha |
| 2002 | under 1 ha | 1 ha | 2 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | 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 | 3 ha | 3 ha |
| 2008 | 2 ha | 3 ha | 4 ha |
| 2009 | 4 ha | 6 ha | 10 ha |
| 2010 | under 1 ha | 2 ha | 2 ha |
| 2011 | 1 ha | 3 ha | 4 ha |
| 2012 | 1 ha | 3 ha | 4 ha |
| 2013 | 6 ha | 6 ha | 12 ha |
| 2014 | 9 ha | 23 ha | 32 ha |
| 2015 | 7 ha | 10 ha | 17 ha |
| 2016 | 20 ha | 31 ha | 51 ha |
| 2017 | 120 ha | 351 ha | 471 ha |
| 2018 | 35 ha | 168 ha | 203 ha |
| 2019 | 24 ha | 150 ha | 174 ha |
| 2020 | 18 ha | 79 ha | 97 ha |
| 2021 | 9 ha | 56 ha | 65 ha |
| 2022 | 34 ha | 91 ha | 125 ha |
| 2023 | 21 ha | 62 ha | 83 ha |
| 2024 | 13 ha | 44 ha | 57 ha |
| 2025 | 26 ha | 62 ha | 88 ha |
What is causing deforestation around Leshan?
- Loggingcan grow back76% · 1,150 ha
- Towns and roadscleared for good19% · 292 ha
- Mining and energycleared for good3.2% · 48 ha
Also: farms, pasture and plantations, 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
- 15,100 ha
- Forest in 2020
- 15,500 ha
- Overall change
- +408 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Leshan grew from about 15,100 hectares to 15,500 hectares, a net gain of about 408 hectares (+2.7%). New forest grew on about 812 hectares, while 404 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 Leshan
What is the air quality (AQI) in Leshan right now?
The latest reading for Leshan shows an AQI of 105 (Unhealthy for sensitive groups), measured Nov 11, 23:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is niú'ěr qiáo, Leshan (乐山牛耳桥), 2.5 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Leshan today?
At AQI 105 (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 Leshan been like this week?
Over the last 7 days, the CAMS air-quality model put Leshan's daily AQI at 110 on average, from 73 on Nov 8 to an hourly peak of 179 on Nov 6. On 5 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Leshan lost since 2001?
Since 2001, the area within 10 km of Leshan has lost about 1,510 hectares of forest (about 2,100 football pitches): 26% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 352 hectares (23%) was deforestation: forest cleared for good for farms, mines or towns. Forest loss is slowing down: about 84 hectares a year in 2021–2025, down from 199 hectares a year in 2016–2020. Comparing satellite maps from 2000 and 2020, the forest around Leshan grew from about 15,100 hectares to 15,500 hectares, a net gain of about 408 hectares (+2.7%). New forest grew on about 812 hectares, while 404 hectares were lost.
What is the tree count in Leshan?
Leshan has an estimated 141,310 trees across the 10.17 km² of land measured — 55.6% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Leshan need?
Leshan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Leshan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Shizhong 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 Shizhong District; the tree count is an estimate derived from that cover.
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