City report · Hubei, China
Chengzhong Air quality today
Air quality in Chengzhong currently reads AQI 85 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 85
Moderate
- PM2.5, fine particles (µg/m³)
- 30.3
- tree cover
- 19.5%
- trees in this area
- 61.1K
- more trees needed
- 32.9K
Measured across a 2 km radius around Yingcheng, Xiaogan, Hubei, China (12.57 km²), from a satellite image of Sep 13, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Chengzhong · AQI 85 (Moderate)
Chengzhong's tree count comes to 61,139 trees across 12.54 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 32,921 more trees would close the gap.
Air quality detail
Air quality in Chengzhong today: AQI 85, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 13 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 13 station cities within 225 km, e.g. Xiaogan and Wuhan
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
30.3
PM10
44.7
NO₂
41.0
O₃
27.0
SO₂
27.2
CO
1164.0
- 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 Chengzhong's daily AQI at 120 on average, from 80 on Nov 9 to an hourly peak of 175 on Nov 7.
Where Chengzhong stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Chengzhong: Below target
19.5% tree cover against a 30% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
61,139
Target trees
94,060
More trees needed
32,921
CO₂ if planted / yr
724.3 t
Deforestation · 2001–2025
How much forest has Chengzhong lost?
There was very little forest around Chengzhong in 2000, about 88 hectares, and about 9 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 August 2017 of a 5 × 5 km area in the city center.
The worst year was 2016, when about 3 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 | 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 | 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 | 3 ha | under 1 ha | 3 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 Chengzhong?
- Towns and roadscleared for good44% · 4 ha
- Loggingcan grow back25% · 2 ha
- Farms, pasture and plantationscleared for good5.7% · 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
- 540 ha
- Forest in 2020
- 619 ha
- Overall change
- +79 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Chengzhong grew from about 540 hectares to 619 hectares, a net gain of about 79 hectares (+15%). New forest grew on about 91 hectares, while 13 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 Chengzhong
What is the air quality (AQI) in Chengzhong right now?
The latest reading for Chengzhong shows an AQI of 85 (Moderate), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 13 ground-station cities within 225 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 Chengzhong today?
At AQI 85 (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 Chengzhong been like this week?
Over the last 7 days, the CAMS air-quality model put Chengzhong's daily AQI at 120 on average, from 80 on Nov 9 to an hourly peak of 175 on Nov 7. On 6 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Chengzhong lost since 2001?
There was very little forest around Chengzhong in 2000, about 88 hectares, and about 9 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. Comparing satellite maps from 2000 and 2020, the forest around Chengzhong grew from about 540 hectares to 619 hectares, a net gain of about 79 hectares (+15%). New forest grew on about 91 hectares, while 13 hectares were lost.
What is the tree count in Chengzhong?
Chengzhong has an estimated 61,139 trees across the 12.54 km² of land measured — 19.5% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Chengzhong need?
Chengzhong needs roughly 32,921 more trees to close a 10-point shortfall against its 30% tree-cover target — about 724.3 t of extra CO₂ absorbed per year once grown.
How are Chengzhong'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 Yingcheng; the tree count is an estimate derived from that cover.
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