City report · Inner Mongolia, China
Wūdān Air quality today
Air quality in Wūdān currently reads AQI 56 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 56
Moderate
- PM2.5, fine particles (µg/m³)
- 11.6
- tree cover
- 2.9%
- trees in this area
- 9.1K
- more trees needed
- 85.1K
Measured across a 2 km radius around Ongniud Banner, Chifeng, Inner Mongolia, China (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Wūdān · AQI 56 (Moderate)
Wūdān's tree count comes to 9,111 trees across 12.57 km², 27 points below the 30% tree-cover level considered healthy for this area, so roughly 85,137 more trees would close the gap.
Air quality detail
Air quality in Wūdān today: AQI 56, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 4 station cities within 245 km, e.g. Chifeng and Chaoyang, Liaoning
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
11.6
PM10
34.0
NO₂
9.7
O₃
62.0
SO₂
13.2
CO
266.0
- 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 Wūdān's daily AQI at 61 on average, from 35 on Nov 6 to an hourly peak of 146 on Nov 10.
Where Wūdān stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Wūdān: Critically low
2.9% tree cover against a 30% healthy-neighborhood target, across 12.57 km².
Trees in this area
9,111
Target trees
94,248
More trees needed
85,137
CO₂ if planted / yr
1,873 t
Deforestation · 2001–2025
How much forest has Wūdān lost?
There was very little forest around Wūdān in 2000, about 40 hectares, and about 11 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
The worst year was 2011, when about 2 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 | 1 ha | under 1 ha | 2 ha |
| 2002 | under 1 ha | 1 ha | 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | 2 ha | under 1 ha | 2 ha |
| 2005 | 1 ha | under 1 ha | 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | 1 ha | under 1 ha | 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 | 2 ha | under 1 ha | 2 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 Wūdān?
- Farms, pasture and plantationscleared for good64% · 7 ha
- Towns and roadscleared for good13% · 1 ha
- Mining and energycleared for good3.8% · under 1 ha
Also: unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
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. Images: contains modified Copernicus Sentinel data. How it's measured
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Frequently asked
Questions about Wūdān
What is the air quality (AQI) in Wūdān right now?
The latest reading for Wūdān shows an AQI of 56 (Moderate), observed Nov 11, 12:00 local time via Open-Meteo / CAMS, corrected with 4 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Wūdān today?
At AQI 56 (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 Wūdān been like this week?
Over the last 7 days, the CAMS air-quality model put Wūdān's daily AQI at 61 on average, from 35 on Nov 6 to an hourly peak of 146 on Nov 10. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Wūdān lost since 2001?
There was very little forest around Wūdān in 2000, about 40 hectares, and about 11 hectares of it has been lost since. Only fairly dense woodland counts as forest in these maps, so scattered street and garden trees don't show up here.
What is the tree count in Wūdān?
Wūdān has an estimated 9,111 trees across the 12.57 km² measured — 2.9% tree cover, 27 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Wūdān need?
Wūdān needs roughly 85,137 more trees to close a 27-point shortfall against its 30% tree-cover target — about 1,873 t of extra CO₂ absorbed per year once grown.
How are Wūdān'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 Ongniud Banner; the tree count is an estimate derived from that cover.
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