City report · Zhejiang, China
Chóngfú Air quality today
Air quality in Chóngfú 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)
- 48.9
- tree cover
- 18.9%
- trees in this area
- 59.1K
- more trees needed
- 50.3K
Measured across a 2 km radius around Tongxiang, Jiaxing, 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.
Chóngfú · AQI 134 (Unhealthy for sensitive groups)
Chóngfú's tree count comes to 59,079 trees across 12.51 km² of land, 16 points below the 35% tree-cover level considered healthy for this area, so roughly 50,327 more trees would close the gap.
Air quality detail
Air quality in Chóngfú 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 · Linping town, Hangzhou (杭州市临平镇), 17.7 km away
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
48.9
PM10
79.2
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 Chóngfú's daily AQI at 110 on average, from 67 on Nov 9 to an hourly peak of 279 on Nov 11.
Where Chóngfú stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chóngfú: Critically low
18.9% tree cover against a 35% healthy-neighborhood target, across 12.51 km² of land.
Trees in this area
59,079
Target trees
109,406
More trees needed
50,327
CO₂ if planted / yr
1,107 t
Deforestation · 2001–2025
How much forest has Chóngfú lost?
Since 2001, the area within 10 km of Chóngfú has lost about 3 hectares of forest (about 4 football pitches): 2.5% of the forest it had in 2000. Most of it (66%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 3 haabout 4 football pitches
- Share of its forest
- 2.5%of what there was in 2000
- Cleared for good
- 2 hadeforestation: turned into farms, mines or towns
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 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | under 1 ha | under 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Chóngfú?
- Towns and roadscleared for good59% · 2 ha
- Loggingcan grow back17% · under 1 ha
- Farms, pasture and plantationscleared for good3.4% · under 1 ha
Also: 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
- 3,450 ha
- Forest in 2020
- 4,040 ha
- Overall change
- +585 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chóngfú grew from about 3,450 hectares to 4,040 hectares, a net gain of about 585 hectares (+17%). New forest grew on about 618 hectares, while 32 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 Chóngfú
What is the air quality (AQI) in Chóngfú right now?
The latest reading for Chóngfú shows an AQI of 134 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by the Linping town, Hangzhou (杭州市临平镇) ground monitoring station, 17.7 km away, via OpenAQ. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Chóngfú 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 Chóngfú been like this week?
Over the last 7 days, the CAMS air-quality model put Chóngfú's daily AQI at 110 on average, from 67 on Nov 9 to an hourly peak of 279 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Chóngfú lost since 2001?
Since 2001, the area within 10 km of Chóngfú has lost about 3 hectares of forest (about 4 football pitches): 2.5% of the forest it had in 2000. Most of it (66%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Chóngfú grew from about 3,450 hectares to 4,040 hectares, a net gain of about 585 hectares (+17%). New forest grew on about 618 hectares, while 32 hectares were lost.
What is the tree count in Chóngfú?
Chóngfú has an estimated 59,079 trees across the 12.51 km² of land measured — 18.9% tree cover, 16 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Chóngfú need?
Chóngfú needs roughly 50,327 more trees to close a 16-point shortfall against its 35% tree-cover target — about 1,107 t of extra CO₂ absorbed per year once grown.
How are Chóngfú's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Tongxiang, 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 Tongxiang; the tree count is an estimate derived from that cover.
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