City report · Zhejiang, China
Yiwu Air quality today
Air quality in Yiwu currently reads AQI 154 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 154
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 75.3
- tree cover
- 18.8%
- trees in this area
- 57.8K
- more trees needed
- 65.1K
Measured across a 2 km radius around Yiwu, Jinhua, Zhejiang, China (12.57 km²), from a satellite image of Sep 19, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yiwu · AQI 154 (Unhealthy)
Yiwu's tree count comes to 57,763 trees across 12.29 km² of land, 21 points below the 40% tree-cover level considered healthy for this area, so roughly 65,137 more trees would close the gap.
Air quality detail
Air quality in Yiwu today: AQI 154, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 8 station cities within 225 km, e.g. Wenzhou and Huangshan City
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
75.3
PM10
100.1
NO₂
89.4
O₃
10.0
SO₂
8.3
CO
1185.0
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Yiwu's daily AQI at 90 on average, from 52 on Nov 9 to an hourly peak of 164 on Nov 11.
Where Yiwu stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yiwu: Critically low
18.8% tree cover against a 40% healthy-neighborhood target, across 12.29 km² of land.
Trees in this area
57,763
Target trees
122,900
More trees needed
65,137
CO₂ if planted / yr
1,433 t
Deforestation · 2001–2025
How much forest has Yiwu lost?
Since 2001, the area within 10 km of Yiwu has lost about 115 hectares of forest (about 160 football pitches): 1.9% of the forest it had in 2000. Most of it (88%) was deforestation, forest cleared for good, mainly for towns and roads.
2018: satellite photo from December 2017 of a 5 × 5 km area about 7 km northwest of the city center.
- Forest lost since 2001
- 115 haabout 160 football pitches
- Share of its forest
- 1.9%of what there was in 2000
- Cleared for good
- 101 hadeforestation: turned into farms, mines or towns
The worst year was 2022, when about 18 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 | 2 ha | 3 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 3 ha | under 1 ha | 3 ha |
| 2005 | under 1 ha | under 1 ha | 2 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | 5 ha | under 1 ha | 5 ha |
| 2010 | 3 ha | 2 ha | 4 ha |
| 2011 | 6 ha | under 1 ha | 6 ha |
| 2012 | 1 ha | under 1 ha | 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 6 ha | under 1 ha | 6 ha |
| 2015 | 4 ha | under 1 ha | 5 ha |
| 2016 | 2 ha | under 1 ha | 2 ha |
| 2017 | 6 ha | under 1 ha | 6 ha |
| 2018 | 6 ha | under 1 ha | 6 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | 18 ha | under 1 ha | 18 ha |
| 2021 | 9 ha | 1 ha | 10 ha |
| 2022 | 18 ha | under 1 ha | 18 ha |
| 2023 | 6 ha | 2 ha | 7 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 2 ha | 2 ha | 4 ha |
What is causing deforestation around Yiwu?
- Towns and roadscleared for good83% · 96 ha
- Mining and energycleared for good4.8% · 6 ha
- Loggingcan grow back3.5% · 4 ha
Also: wildfires, 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
- 8,590 ha
- Forest in 2020
- 8,950 ha
- Overall change
- +359 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yiwu grew from about 8,590 hectares to 8,950 hectares, a net gain of about 359 hectares (+4.2%). New forest grew on about 492 hectares, while 133 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 Yiwu
What is the air quality (AQI) in Yiwu right now?
The latest reading for Yiwu shows an AQI of 154 (Unhealthy), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 8 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Yiwu today?
At AQI 154 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Yiwu been like this week?
Over the last 7 days, the CAMS air-quality model put Yiwu's daily AQI at 90 on average, from 52 on Nov 9 to an hourly peak of 164 on Nov 11. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Yiwu lost since 2001?
Since 2001, the area within 10 km of Yiwu has lost about 115 hectares of forest (about 160 football pitches): 1.9% of the forest it had in 2000. Most of it (88%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Yiwu grew from about 8,590 hectares to 8,950 hectares, a net gain of about 359 hectares (+4.2%). New forest grew on about 492 hectares, while 133 hectares were lost.
What is the tree count in Yiwu?
Yiwu has an estimated 57,763 trees across the 12.29 km² of land measured — 18.8% tree cover, 21 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Yiwu need?
Yiwu needs roughly 65,137 more trees to close a 21-point shortfall against its 40% tree-cover target — about 1,433 t of extra CO₂ absorbed per year once grown.
How are Yiwu's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Yiwu; the tree count is an estimate derived from that cover.
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