City report · Zhejiang, China
Zhoushan Air quality today
Air quality in Zhoushan currently reads AQI 82 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 82
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 25.9
- tree cover
- 24.2%
- trees in this area
- 67.3K
- more trees needed
- 16.1K
Measured across a 2 km radius around Dinghai District, Zhoushan, Zhejiang, China (12.57 km²), from a satellite image of Aug 2, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Zhoushan · AQI 82 (Moderate)
Zhoushan's tree count comes to 67,283 trees across 11.12 km² of land, 6 points below the 30% tree-cover level considered healthy for this area, so roughly 16,126 more trees would close the gap.
Air quality detail
Air quality in Zhoushan today: AQI 82, 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 · Línchéng new area, Zhoushan (舟山市临城新区), 1.6 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
25.9
PM10
33.5
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Zhejiang Environmental Protection Bureau (浙江省环保厅门户)
- 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 Zhoushan's daily AQI at 64 on average, from 42 on Nov 9 to an hourly peak of 94 on Nov 10.
Where Zhoushan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Zhoushan: Below target
24.2% tree cover against a 30% healthy-neighborhood target, across 11.12 km² of land.
Trees in this area
67,283
Target trees
83,409
More trees needed
16,126
CO₂ if planted / yr
354.8 t
Deforestation · 2001–2025
How much forest has Zhoushan lost?
Since 2001, the area within 10 km of Zhoushan has lost about 130 hectares of forest (about 180 football pitches): 2.1% of the forest it had in 2000. Most of it (79%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 130 haabout 180 football pitches
- Share of its forest
- 2.1%of what there was in 2000
- Cleared for good
- 103 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 19 hectares 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 | 2 ha | under 1 ha | 2 ha |
| 2005 | 4 ha | under 1 ha | 4 ha |
| 2006 | 3 ha | under 1 ha | 3 ha |
| 2007 | 11 ha | under 1 ha | 11 ha |
| 2008 | 3 ha | under 1 ha | 3 ha |
| 2009 | 2 ha | under 1 ha | 2 ha |
| 2010 | 13 ha | under 1 ha | 13 ha |
| 2011 | 3 ha | under 1 ha | 4 ha |
| 2012 | 2 ha | under 1 ha | 3 ha |
| 2013 | 2 ha | 2 ha | 4 ha |
| 2014 | 2 ha | under 1 ha | 2 ha |
| 2015 | 3 ha | under 1 ha | 4 ha |
| 2016 | 5 ha | 4 ha | 10 ha |
| 2017 | 14 ha | under 1 ha | 14 ha |
| 2018 | 1 ha | under 1 ha | 2 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 4 ha | 1 ha | 5 ha |
| 2021 | under 1 ha | 5 ha | 5 ha |
| 2022 | 3 ha | under 1 ha | 4 ha |
| 2023 | 2 ha | under 1 ha | 3 ha |
| 2024 | 10 ha | 2 ha | 12 ha |
| 2025 | 13 ha | 6 ha | 19 ha |
What is causing deforestation around Zhoushan?
- Towns and roadscleared for good66% · 86 ha
- Loggingcan grow back14% · 18 ha
- Farms, pasture and plantationscleared for good14% · 18 ha
Also: mining and energy, 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
- 9,600 ha
- Forest in 2020
- 9,580 ha
- Overall change
- −18 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Zhoushan stayed about the same size, at about 9,580 hectares: new forest grew on about 149 hectares, and about 167 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 Zhoushan
What is the air quality (AQI) in Zhoushan right now?
The latest reading for Zhoushan shows an AQI of 82 (Moderate), measured Nov 11, 22:00 local time by the Línchéng new area, Zhoushan (舟山市临城新区) ground monitoring station, 1.6 km 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 Zhoushan today?
At AQI 82 (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 Zhoushan been like this week?
Over the last 7 days, the CAMS air-quality model put Zhoushan's daily AQI at 64 on average, from 42 on Nov 9 to an hourly peak of 94 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Zhoushan lost since 2001?
Since 2001, the area within 10 km of Zhoushan has lost about 130 hectares of forest (about 180 football pitches): 2.1% of the forest it had in 2000. Most of it (79%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Zhoushan stayed about the same size, at about 9,580 hectares: new forest grew on about 149 hectares, and about 167 hectares were lost.
What is the tree count in Zhoushan?
Zhoushan has an estimated 67,283 trees across the 11.12 km² of land measured — 24.2% tree cover, 6 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Zhoushan need?
Zhoushan needs roughly 16,126 more trees to close a 6-point shortfall against its 30% tree-cover target — about 354.8 t of extra CO₂ absorbed per year once grown.
How are Zhoushan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Dinghai 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 Dinghai District; the tree count is an estimate derived from that cover.
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