City report · Chongqing, China
Longshui Air quality today
Air quality in Longshui currently reads AQI 152 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 152
Unhealthy
- PM2.5, fine particles (µg/m³)
- 57.4
- tree cover
- 22.2%
- trees in this area
- 69.7K
- more trees needed
- 55.9K
Measured across a 2 km radius around Dazu District, Chongqing, China (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Longshui · AQI 152 (Unhealthy)
Longshui's tree count comes to 69,674 trees across 12.56 km² of land, 18 points below the 40% tree-cover level considered healthy for this area, so roughly 55,864 more trees would close the gap.
Air quality detail
Air quality in Longshui today: AQI 152, Unhealthy
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 · shuānglóng xī lù, Chongqing (重庆双龙西路), 8.7 km away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
57.4
PM10
69.1
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 Longshui's daily AQI at 98 on average, from 64 on Nov 9 to an hourly peak of 161 on Nov 5.
Where Longshui stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Longshui: Critically low
22.2% tree cover against a 40% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
69,674
Target trees
125,538
More trees needed
55,864
CO₂ if planted / yr
1,229 t
Deforestation · 2001–2025
How much forest has Longshui lost?
Since 2001, the area within 10 km of Longshui has lost about 143 hectares of forest (about 200 football pitches): 2.1% of the forest it had in 2000. Most of it (50%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km east of the city center.
- Forest lost since 2001
- 143 haabout 200 football pitches
- Share of its forest
- 2.1%of what there was in 2000
- Cleared for good
- 71 hadeforestation: turned into farms, mines or towns
The worst year was 2016, when about 21 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 | 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 | 1 ha | 2 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 7 ha | 3 ha | 10 ha |
| 2010 | 4 ha | under 1 ha | 5 ha |
| 2011 | under 1 ha | 1 ha | 2 ha |
| 2012 | under 1 ha | 3 ha | 3 ha |
| 2013 | 8 ha | 4 ha | 12 ha |
| 2014 | 10 ha | 3 ha | 13 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 3 ha | 18 ha | 21 ha |
| 2017 | under 1 ha | 6 ha | 7 ha |
| 2018 | 6 ha | 1 ha | 7 ha |
| 2019 | 8 ha | 4 ha | 12 ha |
| 2020 | 4 ha | under 1 ha | 4 ha |
| 2021 | under 1 ha | under 1 ha | 1 ha |
| 2022 | 2 ha | 9 ha | 11 ha |
| 2023 | 1 ha | 8 ha | 9 ha |
| 2024 | 5 ha | 2 ha | 7 ha |
| 2025 | 7 ha | 4 ha | 11 ha |
What is causing deforestation around Longshui?
- Loggingcan grow back39% · 55 ha
- Towns and roadscleared for good32% · 45 ha
- Farms, pasture and plantationscleared for good16% · 23 ha
Also: mining and energy, 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
- 15,600 ha
- Forest in 2020
- 15,500 ha
- Overall change
- −70 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Longshui stayed about the same size, at about 15,500 hectares: new forest grew on about 164 hectares, and about 235 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 Longshui
What is the air quality (AQI) in Longshui right now?
The latest reading for Longshui shows an AQI of 152 (Unhealthy), measured Nov 11, 21:00 local time by the shuānglóng xī lù, Chongqing (重庆双龙西路) ground monitoring station, 8.7 km 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 Longshui today?
At AQI 152 (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 Longshui been like this week?
Over the last 7 days, the CAMS air-quality model put Longshui's daily AQI at 98 on average, from 64 on Nov 9 to an hourly peak of 161 on Nov 5. On 4 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Longshui lost since 2001?
Since 2001, the area within 10 km of Longshui has lost about 143 hectares of forest (about 200 football pitches): 2.1% of the forest it had in 2000. Most of it (50%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Longshui stayed about the same size, at about 15,500 hectares: new forest grew on about 164 hectares, and about 235 hectares were lost.
What is the tree count in Longshui?
Longshui has an estimated 69,674 trees across the 12.56 km² of land measured — 22.2% tree cover, 18 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Longshui need?
Longshui needs roughly 55,864 more trees to close a 18-point shortfall against its 40% tree-cover target — about 1,229 t of extra CO₂ absorbed per year once grown.
How are Longshui's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Dazu 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 Dazu District; the tree count is an estimate derived from that cover.
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