City report · Shanghai, China
Chengqiao Air quality today
Air quality in Chengqiao currently reads AQI 96 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 96
Moderate
- PM2.5, fine particles (µg/m³)
- 33.0
- tree cover
- 20.3%
- trees in this area
- 55.4K
- more trees needed
- 26.5K
Measured across a 2 km radius around Chongming District, Shanghai, China (12.57 km²), from a satellite image of Aug 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Chengqiao · AQI 96 (Moderate)
Chengqiao's tree count comes to 55,420 trees across 10.92 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 26,481 more trees would close the gap.
Air quality detail
Air quality in Chengqiao today: AQI 96, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 22:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Chongming City Bridge, Shanghai (崇明城桥), 600 m away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
33.0
PM10
41.0
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 Chengqiao's daily AQI at 102 on average, from 57 on Nov 9 to an hourly peak of 189 on Nov 10.
Where Chengqiao stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chengqiao: Below target
20.3% tree cover against a 30% healthy-neighborhood target, across 10.92 km² of land.
Trees in this area
55,420
Target trees
81,901
More trees needed
26,481
CO₂ if planted / yr
582.6 t
Deforestation · 2001–2025
How much forest has Chengqiao lost?
Almost no forest has been lost around Chengqiao since 2001: less than 1 hectare of the 107 hectares there in 2000.
2018: satellite photo from August 2018 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 1,660 ha
- Forest in 2020
- 2,650 ha
- Overall change
- +991 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chengqiao grew from about 1,660 hectares to 2,650 hectares, a net gain of about 991 hectares (+60%). New forest grew on about 992 hectares, while 1 hectare 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 Chengqiao
What is the air quality (AQI) in Chengqiao right now?
The latest reading for Chengqiao shows an AQI of 96 (Moderate), measured Nov 11, 22:00 local time by the Chongming City Bridge, Shanghai (崇明城桥) ground monitoring station, 600 m away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Chengqiao today?
At AQI 96 (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 Chengqiao been like this week?
Over the last 7 days, the CAMS air-quality model put Chengqiao's daily AQI at 102 on average, from 57 on Nov 9 to an hourly peak of 189 on Nov 10. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Chengqiao lost since 2001?
Almost no forest has been lost around Chengqiao since 2001: less than 1 hectare of the 107 hectares there in 2000. Comparing satellite maps from 2000 and 2020, the forest around Chengqiao grew from about 1,660 hectares to 2,650 hectares, a net gain of about 991 hectares (+60%). New forest grew on about 992 hectares, while 1 hectare were lost.
What is the tree count in Chengqiao?
Chengqiao has an estimated 55,420 trees across the 10.92 km² of land measured — 20.3% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Chengqiao need?
Chengqiao needs roughly 26,481 more trees to close a 10-point shortfall against its 30% tree-cover target — about 582.6 t of extra CO₂ absorbed per year once grown.
How are Chengqiao's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Chongming 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 Chongming District; the tree count is an estimate derived from that cover.
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