City report · Shandong, China
Dongcun Air quality today
Air quality in Dongcun currently reads AQI 91 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 91
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 30.6
- tree cover
- 8.7%
- trees in this area
- 26.9K
- more trees needed
- 65.8K
Measured across a 2 km radius around Haiyang, Yantai, Shandong, China (12.57 km²), from a satellite image of Sep 22, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Dongcun · AQI 91 (Moderate)
Dongcun's tree count comes to 26,867 trees across 12.36 km² of land, 21 points below the 30% tree-cover level considered healthy for this area, so roughly 65,778 more trees would close the gap.
Air quality detail
Air quality in Dongcun today: AQI 91, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Haiyang Environmental Protection Bureau, Haiyang City (海阳市海阳环保局), 2.1 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
30.6
PM10
44.9
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Environmental Protection Department of Shandong Province (山东省环境保护厅)
- 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 Dongcun's daily AQI at 72 on average, from 43 on Nov 9 to an hourly peak of 133 on Nov 5.
Where Dongcun stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Dongcun: Critically low
8.7% tree cover against a 30% healthy-neighborhood target, across 12.36 km² of land.
Trees in this area
26,867
Target trees
92,645
More trees needed
65,778
CO₂ if planted / yr
1,447 t
Deforestation · 2001–2025
How much forest has Dongcun lost?
There was almost no forest around Dongcun 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 August 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 748 ha
- Forest in 2020
- 800 ha
- Overall change
- +52 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Dongcun grew from about 748 hectares to 800 hectares, a net gain of about 52 hectares (+7%). New forest grew on about 70 hectares, while 17 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 Dongcun
What is the air quality (AQI) in Dongcun right now?
The latest reading for Dongcun shows an AQI of 91 (Moderate), measured Nov 11, 23:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Haiyang Environmental Protection Bureau, Haiyang City (海阳市海阳环保局), 2.1 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Dongcun today?
At AQI 91 (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 Dongcun been like this week?
Over the last 7 days, the CAMS air-quality model put Dongcun's daily AQI at 72 on average, from 43 on Nov 9 to an hourly peak of 133 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Dongcun lost since 2001?
There was almost no forest around Dongcun 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 Dongcun grew from about 748 hectares to 800 hectares, a net gain of about 52 hectares (+7%). New forest grew on about 70 hectares, while 17 hectares were lost.
What is the tree count in Dongcun?
Dongcun has an estimated 26,867 trees across the 12.36 km² of land measured — 8.7% tree cover, 21 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Dongcun need?
Dongcun needs roughly 65,778 more trees to close a 21-point shortfall against its 30% tree-cover target — about 1,447 t of extra CO₂ absorbed per year once grown.
How are Dongcun's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Haiyang, 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 Haiyang; the tree count is an estimate derived from that cover.
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