City report · Shanghai, China
Jiading Air quality today
Air quality in Jiading currently reads AQI 84 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 84
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 26.8
- tree cover
- 25.3%
- trees in this area
- 79.2K
- more trees needed
- 14.7K
Measured across a 2 km radius around Jiading 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.
Jiading · AQI 84 (Moderate)
Jiading's tree count comes to 79,244 trees across 12.53 km² of land, 5 points below the 30% tree-cover level considered healthy for this area, so roughly 14,721 more trees would close the gap.
Air quality detail
Air quality in Jiading today: AQI 84, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Jiading Monitoring Station, Shanghai (嘉定监测站), 2.6 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
26.8
PM10
33.5
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 Jiading's daily AQI at 117 on average, from 66 on Nov 9 to an hourly peak of 212 on Nov 10.
Where Jiading stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jiading: Below target
25.3% tree cover against a 30% healthy-neighborhood target, across 12.53 km² of land.
Trees in this area
79,244
Target trees
93,965
More trees needed
14,721
CO₂ if planted / yr
323.9 t
Deforestation · 2001–2025
How much forest has Jiading lost?
There was almost no forest around Jiading in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 1,450 ha
- Forest in 2020
- 3,710 ha
- Overall change
- +2,270 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Jiading grew from about 1,450 hectares to 3,710 hectares, a net gain of about 2,270 hectares (+157%). New forest grew on about 2,270 hectares, while 4 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 Jiading
What is the air quality (AQI) in Jiading right now?
The latest reading for Jiading shows an AQI of 84 (Moderate), measured Nov 12, 00:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Jiading Monitoring Station, Shanghai (嘉定监测站), 2.6 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Jiading today?
At AQI 84 (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 Jiading been like this week?
Over the last 7 days, the CAMS air-quality model put Jiading's daily AQI at 117 on average, from 66 on Nov 9 to an hourly peak of 212 on Nov 10. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Jiading lost since 2001?
There was almost no forest around Jiading in 2000, so there has been almost nothing to lose since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here. Comparing satellite maps from 2000 and 2020, the forest around Jiading grew from about 1,450 hectares to 3,710 hectares, a net gain of about 2,270 hectares (+157%). New forest grew on about 2,270 hectares, while 4 hectares were lost.
What is the tree count in Jiading?
Jiading has an estimated 79,244 trees across the 12.53 km² of land measured — 25.3% tree cover, 5 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Jiading need?
Jiading needs roughly 14,721 more trees to close a 5-point shortfall against its 30% tree-cover target — about 323.9 t of extra CO₂ absorbed per year once grown.
How are Jiading's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jiading 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 Jiading District; the tree count is an estimate derived from that cover.
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