City report · Zhejiang, China
Quzhou Air quality today
Air quality in Quzhou currently reads AQI 91 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 91
Moderate
- PM2.5, fine particles (µg/m³)
- 30.4
- tree cover
- 24.5%
- trees in this area
- 70.9K
- more trees needed
- 15.9K
Measured across a 2 km radius around Kecheng District, Quzhou, 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.
Quzhou · AQI 91 (Moderate)
Quzhou's tree count comes to 70,888 trees across 11.58 km² of land, 5 points below the 30% tree-cover level considered healthy for this area, so roughly 15,914 more trees would close the gap.
Air quality detail
Air quality in Quzhou today: AQI 91, 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 · Quzhou (衢州), 1.5 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
30.4
PM10
52.7
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 Quzhou's daily AQI at 68 on average, from 47 on Nov 9 to an hourly peak of 110 on Nov 5.
Where Quzhou stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Quzhou: Below target
24.5% tree cover against a 30% healthy-neighborhood target, across 11.58 km² of land.
Trees in this area
70,888
Target trees
86,802
More trees needed
15,914
CO₂ if planted / yr
350.1 t
Deforestation · 2001–2025
How much forest has Quzhou lost?
Since 2001, the area within 10 km of Quzhou has lost about 295 hectares of forest (about 410 football pitches): 17% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from December 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 295 haabout 410 football pitches
- Share of its forest
- 17%of what there was in 2000
- Cleared for good
- 216 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 55 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 | 1 ha | 2 ha |
| 2002 | under 1 ha | under 1 ha | 2 ha |
| 2003 | 3 ha | 3 ha | 6 ha |
| 2004 | 3 ha | 1 ha | 4 ha |
| 2005 | 5 ha | under 1 ha | 5 ha |
| 2006 | 3 ha | 2 ha | 5 ha |
| 2007 | 5 ha | under 1 ha | 6 ha |
| 2008 | 5 ha | under 1 ha | 5 ha |
| 2009 | 6 ha | 3 ha | 9 ha |
| 2010 | 10 ha | under 1 ha | 11 ha |
| 2011 | 5 ha | under 1 ha | 5 ha |
| 2012 | 16 ha | under 1 ha | 17 ha |
| 2013 | 5 ha | 2 ha | 7 ha |
| 2014 | 7 ha | under 1 ha | 8 ha |
| 2015 | 7 ha | under 1 ha | 7 ha |
| 2016 | 22 ha | under 1 ha | 23 ha |
| 2017 | 53 ha | 2 ha | 55 ha |
| 2018 | 9 ha | 1 ha | 10 ha |
| 2019 | 3 ha | under 1 ha | 3 ha |
| 2020 | 15 ha | 3 ha | 18 ha |
| 2021 | 4 ha | 4 ha | 8 ha |
| 2022 | 7 ha | under 1 ha | 8 ha |
| 2023 | 8 ha | 4 ha | 12 ha |
| 2024 | 11 ha | 36 ha | 47 ha |
| 2025 | 5 ha | 11 ha | 16 ha |
What is causing deforestation around Quzhou?
- Towns and roadscleared for good39% · 114 ha
- Farms, pasture and plantationscleared for good35% · 102 ha
- Loggingcan grow back24% · 70 ha
Also: wildfires, 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
- 5,170 ha
- Forest in 2020
- 3,810 ha
- Overall change
- −1,360 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Quzhou shrank from about 5,170 hectares to 3,810 hectares, a net loss of about 1,360 hectares (−26%). New forest grew on about 294 hectares, but 1,660 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 Quzhou
What is the air quality (AQI) in Quzhou right now?
The latest reading for Quzhou shows an AQI of 91 (Moderate), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Quzhou (衢州), 1.5 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Quzhou 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 Quzhou been like this week?
Over the last 7 days, the CAMS air-quality model put Quzhou's daily AQI at 68 on average, from 47 on Nov 9 to an hourly peak of 110 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 Quzhou lost since 2001?
Since 2001, the area within 10 km of Quzhou has lost about 295 hectares of forest (about 410 football pitches): 17% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Quzhou shrank from about 5,170 hectares to 3,810 hectares, a net loss of about 1,360 hectares (−26%). New forest grew on about 294 hectares, but 1,660 hectares were lost.
What is the tree count in Quzhou?
Quzhou has an estimated 70,888 trees across the 11.58 km² of land measured — 24.5% tree cover, 5 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Quzhou need?
Quzhou needs roughly 15,914 more trees to close a 5-point shortfall against its 30% tree-cover target — about 350.1 t of extra CO₂ absorbed per year once grown.
How are Quzhou's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Kecheng 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 Kecheng District; the tree count is an estimate derived from that cover.
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