City report · Heilongjiang, China
Shuangcheng Air quality today
Air quality in Shuangcheng currently reads AQI 373 (Hazardous): Emergency conditions — avoid outdoor activity.
Air quality right now
AQI 373
Hazardous
- PM2.5, fine particles (µg/m³)
- 293.3
- tree cover
- 8.4%
- trees in this area
- 26.3K
- more trees needed
- 115K
Measured across a 2 km radius around Shuangcheng District, Harbin, Heilongjiang, China (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Shuangcheng · AQI 373 (Hazardous)
Shuangcheng's tree count comes to 26,337 trees across 12.54 km² of land, 37 points below the 45% tree-cover level considered healthy for this area, so roughly 114,752 more trees would close the gap.
Air quality detail
Air quality in Shuangcheng today: AQI 373, Hazardous
Main pollutant: PM2.5 · Observed Nov 10, 21:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 165 km, e.g. Harbin and Harbin
Health signal
Emergency conditions — avoid outdoor activity.
PM2.5
293.3
PM10
110.8
NO₂
43.5
O₃
0.0
SO₂
56.8
CO
2392.0
- Outdoor exercise
- Everyone should avoid all outdoor exertion
- Windows
- Keep them closed and seal gaps
- Mask
- Wear an N95 if you must go out
- Air purifier
- Run one on high
Over the last 7 days, the CAMS air-quality model put Shuangcheng's daily AQI at 88 on average, from 59 on Nov 9 to an hourly peak of 175 on Nov 4.
Where Shuangcheng stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Shuangcheng: Critically low
8.4% tree cover against a 45% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
26,337
Target trees
141,089
More trees needed
114,752
CO₂ if planted / yr
2,525 t
Deforestation · 2001–2025
How much forest has Shuangcheng lost?
There was almost no forest around Shuangcheng 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 June 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 166 ha
- Forest in 2020
- 251 ha
- Overall change
- +85 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Shuangcheng grew from about 166 hectares to 251 hectares, a net gain of about 85 hectares (+51%). New forest grew on about 87 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 Shuangcheng
What is the air quality (AQI) in Shuangcheng right now?
The latest reading for Shuangcheng shows an AQI of 373 (Hazardous), observed Nov 10, 21:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 165 km, US EPA index. The main pollutant is PM2.5. Emergency conditions — avoid outdoor activity.
Is it safe to exercise outside in Shuangcheng today?
At AQI 373 (Hazardous): everyone should avoid all outdoor exertion. Windows: keep them closed and seal gaps. Masks: wear an N95 if you must go out. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Shuangcheng been like this week?
Over the last 7 days, the CAMS air-quality model put Shuangcheng's daily AQI at 88 on average, from 59 on Nov 9 to an hourly peak of 175 on Nov 4. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Shuangcheng lost since 2001?
There was almost no forest around Shuangcheng 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 Shuangcheng grew from about 166 hectares to 251 hectares, a net gain of about 85 hectares (+51%). New forest grew on about 87 hectares, while 2 hectares were lost.
What is the tree count in Shuangcheng?
Shuangcheng has an estimated 26,337 trees across the 12.54 km² of land measured — 8.4% tree cover, 37 percentage points short of the 45% tree-cover target set for this area.
How many more trees does Shuangcheng need?
Shuangcheng needs roughly 114,752 more trees to close a 37-point shortfall against its 45% tree-cover target — about 2,525 t of extra CO₂ absorbed per year once grown.
How are Shuangcheng's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Shuangcheng District; the tree count is an estimate derived from that cover.
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