City report · Zhejiang, China
Huzhou Air quality today
Air quality in Huzhou currently reads AQI 134 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 134
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 48.7
- tree cover
- 26.2%
- trees in this area
- 78.6K
- more trees needed
- 26.4K
Measured across a 2 km radius around Wuxing District, Huzhou, Zhejiang, China (12.57 km²), from a satellite image of Sep 14, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Huzhou · AQI 134 (Unhealthy for sensitive groups)
Huzhou's tree count comes to 78,606 trees across 12 km² of land, 9 points below the 35% tree-cover level considered healthy for this area, so roughly 26,402 more trees would close the gap.
Air quality detail
Air quality in Huzhou today: AQI 134, Unhealthy for sensitive groups
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 · Huzhou (湖州), 2.7 km away · median of 2 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
48.7
PM10
74.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Zhejiang Environmental Protection Bureau (浙江省环保厅门户)
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Huzhou's daily AQI at 95 on average, from 62 on Nov 8 to an hourly peak of 171 on Nov 11.
Where Huzhou stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Huzhou: Below target
26.2% tree cover against a 35% healthy-neighborhood target, across 12 km² of land.
Trees in this area
78,606
Target trees
105,008
More trees needed
26,402
CO₂ if planted / yr
580.8 t
Deforestation · 2001–2025
How much forest has Huzhou lost?
Since 2001, the area within 10 km of Huzhou has lost about 308 hectares of forest (about 430 football pitches): 7.2% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from July 2018 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 308 haabout 430 football pitches
- Share of its forest
- 7.2%of what there was in 2000
- Cleared for good
- 268 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 36 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 | 2 ha |
| 2002 | 4 ha | 4 ha | 8 ha |
| 2003 | 2 ha | under 1 ha | 3 ha |
| 2004 | 5 ha | under 1 ha | 6 ha |
| 2005 | 7 ha | 2 ha | 9 ha |
| 2006 | 6 ha | under 1 ha | 7 ha |
| 2007 | 11 ha | 2 ha | 13 ha |
| 2008 | 6 ha | 4 ha | 10 ha |
| 2009 | 20 ha | 5 ha | 25 ha |
| 2010 | 24 ha | 3 ha | 27 ha |
| 2011 | 7 ha | 3 ha | 10 ha |
| 2012 | 10 ha | 7 ha | 17 ha |
| 2013 | 10 ha | under 1 ha | 11 ha |
| 2014 | 3 ha | under 1 ha | 3 ha |
| 2015 | 2 ha | under 1 ha | 3 ha |
| 2016 | 14 ha | 3 ha | 16 ha |
| 2017 | 34 ha | 2 ha | 36 ha |
| 2018 | 29 ha | under 1 ha | 29 ha |
| 2019 | 11 ha | under 1 ha | 11 ha |
| 2020 | 19 ha | under 1 ha | 19 ha |
| 2021 | 11 ha | under 1 ha | 11 ha |
| 2022 | 8 ha | under 1 ha | 9 ha |
| 2023 | 7 ha | under 1 ha | 7 ha |
| 2024 | 9 ha | under 1 ha | 10 ha |
| 2025 | 7 ha | under 1 ha | 7 ha |
What is causing deforestation around Huzhou?
- Towns and roadscleared for good57% · 177 ha
- Mining and energycleared for good23% · 72 ha
- Loggingcan grow back12% · 37 ha
Also: farms, pasture and plantations, 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
- 7,160 ha
- Forest in 2020
- 7,210 ha
- Overall change
- +55 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Huzhou stayed about the same size, at about 7,210 hectares: new forest grew on about 398 hectares, and about 342 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 Huzhou
What is the air quality (AQI) in Huzhou right now?
The latest reading for Huzhou shows an AQI of 134 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Huzhou (湖州), 2.7 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Huzhou today?
At AQI 134 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Huzhou been like this week?
Over the last 7 days, the CAMS air-quality model put Huzhou's daily AQI at 95 on average, from 62 on Nov 8 to an hourly peak of 171 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Huzhou lost since 2001?
Since 2001, the area within 10 km of Huzhou has lost about 308 hectares of forest (about 430 football pitches): 7.2% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Huzhou stayed about the same size, at about 7,210 hectares: new forest grew on about 398 hectares, and about 342 hectares were lost.
What is the tree count in Huzhou?
Huzhou has an estimated 78,606 trees across the 12 km² of land measured — 26.2% tree cover, 9 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Huzhou need?
Huzhou needs roughly 26,402 more trees to close a 9-point shortfall against its 35% tree-cover target — about 580.8 t of extra CO₂ absorbed per year once grown.
How are Huzhou's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Wuxing 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 Wuxing District; the tree count is an estimate derived from that cover.
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