City report · Shanghai, China
Fengxian Air quality today
Air quality in Fengxian currently reads AQI 69 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 69
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 18.8
- tree cover
- 28.7%
- trees in this area
- 90.0K
- more trees needed
- 4.1K
Measured across a 2 km radius around Fengxian District, Shanghai, China (12.57 km²), from a satellite image of Sep 14, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Fengxian · AQI 69 (Moderate)
Fengxian's tree count comes to 89,983 trees across 12.54 km² of land, 1 points below the 30% tree-cover level considered healthy for this area, so roughly 4,076 more trees would close the gap.
Air quality detail
Air quality in Fengxian today: AQI 69, Moderate
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 · Fengxian South Bridge, Shanghai (奉贤南桥), 5.1 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.8
PM10
24.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Shanghai Environment Monitoring Center(上海市环境监测中心)
- 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 Fengxian's daily AQI at 92 on average, from 56 on Nov 8 to an hourly peak of 157 on Nov 10.
Where Fengxian stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Fengxian: Below target
28.7% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
89,983
Target trees
94,059
More trees needed
4,076
CO₂ if planted / yr
89.7 t
Deforestation · 2001–2025
How much forest has Fengxian lost?
Since 2001, the area within 10 km of Fengxian has lost about 3 hectares of forest (about 4 football pitches): 1.9% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (22%). Almost none of it was deforestation, meaning forest cleared for good.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 3 haabout 4 football pitches
- Share of its forest
- 1.9%of what there was in 2000
- Cleared for good
- under 1 hadeforestation: turned into farms, mines or towns
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 | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Fengxian?
- Farms, pasture and plantationscleared for good22% · under 1 ha
- Unknown causescause unknown81% · 2 ha
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
- 1,090 ha
- Forest in 2020
- 2,370 ha
- Overall change
- +1,280 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Fengxian grew from about 1,090 hectares to 2,370 hectares, a net gain of about 1,280 hectares (+117%). New forest grew on about 1,280 hectares, while 2 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 Fengxian
What is the air quality (AQI) in Fengxian right now?
The latest reading for Fengxian shows an AQI of 69 (Moderate), measured Nov 11, 23:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Fengxian South Bridge, Shanghai (奉贤南桥), 5.1 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Fengxian today?
At AQI 69 (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 Fengxian been like this week?
Over the last 7 days, the CAMS air-quality model put Fengxian's daily AQI at 92 on average, from 56 on Nov 8 to an hourly peak of 157 on Nov 10. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Fengxian lost since 2001?
Since 2001, the area within 10 km of Fengxian has lost about 3 hectares of forest (about 4 football pitches): 1.9% of the forest it had in 2000. The biggest cause was farms, pasture and plantations (22%). Almost none of it was deforestation, meaning forest cleared for good. Comparing satellite maps from 2000 and 2020, the forest around Fengxian grew from about 1,090 hectares to 2,370 hectares, a net gain of about 1,280 hectares (+117%). New forest grew on about 1,280 hectares, while 2 hectares were lost.
What is the tree count in Fengxian?
Fengxian has an estimated 89,983 trees across the 12.54 km² of land measured — 28.7% tree cover, 1 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Fengxian need?
Fengxian needs roughly 4,076 more trees to close a 1-point shortfall against its 30% tree-cover target — about 89.7 t of extra CO₂ absorbed per year once grown.
How are Fengxian's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Fengxian 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 Fengxian District; the tree count is an estimate derived from that cover.
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