City report · Shanghai, China
Songjiang Air quality today
Air quality in Songjiang currently reads AQI 99 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 99
Moderate
- PM2.5, fine particles (µg/m³)
- 34.9
- tree cover
- 37.4%
- trees in this area
- 117K
- more trees needed
- 0
Measured across a 2 km radius around Songjiang 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.
Songjiang · AQI 99 (Moderate)
Songjiang's tree count comes to 116,556 trees across 12.47 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Songjiang today: AQI 99, 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 · Songjiang Library, Shanghai (松江图书馆), 300 m away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
34.9
PM10
59.0
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 Songjiang's daily AQI at 117 on average, from 66 on Nov 9 to an hourly peak of 212 on Nov 10.
Where Songjiang stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Songjiang: Healthy tree cover
37.4% tree cover against a 30% healthy-neighborhood target, across 12.47 km² of land.
Trees in this area
116,556
Target trees
116,556
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Songjiang lost?
Since 2001, the area within 10 km of Songjiang has lost about 4 hectares of forest (about 6 football pitches): 2.3% of the forest it had in 2000. Most of it (67%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 4 haabout 6 football pitches
- Share of its forest
- 2.3%of what there was in 2000
- Cleared for good
- 3 hadeforestation: turned into farms, mines or towns
The worst year was 2023, when about 1 hectare 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 | 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 | 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 Songjiang?
- Towns and roadscleared for good36% · 2 ha
- Farms, pasture and plantationscleared for good31% · 1 ha
- Loggingcan grow back2.4% · under 1 ha
Also: 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
- 1,730 ha
- Forest in 2020
- 4,420 ha
- Overall change
- +2,690 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Songjiang grew from about 1,730 hectares to 4,420 hectares, a net gain of about 2,690 hectares (+155%). New forest grew on about 2,690 hectares, while 3 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 Songjiang
What is the air quality (AQI) in Songjiang right now?
The latest reading for Songjiang shows an AQI of 99 (Moderate), measured Nov 11, 22:00 local time by the Songjiang Library, Shanghai (松江图书馆) ground monitoring station, 300 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 Songjiang today?
At AQI 99 (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 Songjiang been like this week?
Over the last 7 days, the CAMS air-quality model put Songjiang'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 Songjiang lost since 2001?
Since 2001, the area within 10 km of Songjiang has lost about 4 hectares of forest (about 6 football pitches): 2.3% of the forest it had in 2000. Most of it (67%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Songjiang grew from about 1,730 hectares to 4,420 hectares, a net gain of about 2,690 hectares (+155%). New forest grew on about 2,690 hectares, while 3 hectares were lost.
What is the tree count in Songjiang?
Songjiang has an estimated 116,556 trees across the 12.47 km² of land measured — 37.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Songjiang need?
Songjiang has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Songjiang's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Songjiang 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 Songjiang District; the tree count is an estimate derived from that cover.
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