City report · Shanghai, China
Dachang Air quality today
Air quality in Dachang currently reads AQI 88 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 88
Moderate
- PM2.5, fine particles (µg/m³)
- 29.2
- tree cover
- 15.5%
- trees in this area
- 48.7K
- more trees needed
- 45.6K
Measured across a 2 km radius around Baoshan, Shanghai, China (12.57 km²), from a satellite image of Sep 26, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Dachang · AQI 88 (Moderate)
Dachang's tree count comes to 48,695 trees across 12.57 km², 14 points below the 30% tree-cover level considered healthy for this area, so roughly 45,553 more trees would close the gap.
Air quality detail
Air quality in Dachang today: AQI 88, 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 · Jing'an North High-tech, Shanghai (静安市北高新), 2.5 km away · median of 5 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.2
PM10
35.6
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 Dachang's daily AQI at 97 on average, from 67 on Nov 9 to an hourly peak of 192 on Nov 10.
Where Dachang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Dachang: Critically low
15.5% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
48,695
Target trees
94,248
More trees needed
45,553
CO₂ if planted / yr
1,002 t
Deforestation · 2001–2025
How much forest has Dachang lost?
There was almost no forest around Dachang 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.
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
- 975 ha
- Forest in 2020
- 3,150 ha
- Overall change
- +2,170 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Dachang grew from about 975 hectares to 3,150 hectares, a net gain of about 2,170 hectares (+223%). New forest grew on about 2,170 hectares, while under 1 hectare was 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 Dachang
What is the air quality (AQI) in Dachang right now?
The latest reading for Dachang shows an AQI of 88 (Moderate), measured Nov 11, 22:00 local time by 5 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Jing'an North High-tech, Shanghai (静安市北高新), 2.5 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Dachang today?
At AQI 88 (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 Dachang been like this week?
Over the last 7 days, the CAMS air-quality model put Dachang's daily AQI at 97 on average, from 67 on Nov 9 to an hourly peak of 192 on Nov 10. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Dachang lost since 2001?
There was almost no forest around Dachang 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 Dachang grew from about 975 hectares to 3,150 hectares, a net gain of about 2,170 hectares (+223%). New forest grew on about 2,170 hectares, while under 1 hectare was lost.
What is the tree count in Dachang?
Dachang has an estimated 48,695 trees across the 12.57 km² measured — 15.5% tree cover, 14 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Dachang need?
Dachang needs roughly 45,553 more trees to close a 14-point shortfall against its 30% tree-cover target — about 1,002 t of extra CO₂ absorbed per year once grown.
How are Dachang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Baoshan, 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 Baoshan; the tree count is an estimate derived from that cover.
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