City report · Hubei, China
Macheng Air quality today
Air quality in Macheng currently reads AQI 62 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 62
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 18.3
- tree cover
- 9.9%
- trees in this area
- 30.6K
- more trees needed
- 62.1K
Measured across a 2 km radius around Macheng, Huanggang, Hubei, China (12.57 km²), from a satellite image of Aug 28, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Macheng · AQI 62 (Moderate)
Macheng's tree count comes to 30,573 trees across 12.36 km² of land, 20 points below the 30% tree-cover level considered healthy for this area, so roughly 62,073 more trees would close the gap.
Air quality detail
Air quality in Macheng today: AQI 62, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 225 km, e.g. Lu'An and Jiujiang
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
18.3
PM10
17.7
NO₂
18.2
O₃
54.0
SO₂
19.1
CO
868.0
- 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 Macheng's daily AQI at 75 on average, from 63 on Nov 9 to an hourly peak of 135 on Nov 8.
Where Macheng stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Macheng: Critically low
9.9% tree cover against a 30% healthy-neighborhood target, across 12.36 km² of land.
Trees in this area
30,573
Target trees
92,646
More trees needed
62,073
CO₂ if planted / yr
1,366 t
Deforestation · 2001–2025
How much forest has Macheng lost?
Since 2001, the area within 10 km of Macheng has lost about 318 hectares of forest (about 440 football pitches): 12% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 116 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from July 2017 of a 5 × 5 km area about 6 km northwest of the city center.
- Forest lost since 2001
- 318 haabout 440 football pitches
- Share of its forest
- 12%of what there was in 2000
- Cleared for good
- 116 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 61 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 | 9 ha | 9 ha | 18 ha |
| 2002 | 2 ha | 2 ha | 4 ha |
| 2003 | 6 ha | under 1 ha | 7 ha |
| 2004 | 14 ha | 12 ha | 25 ha |
| 2005 | 3 ha | 2 ha | 5 ha |
| 2006 | 2 ha | 2 ha | 4 ha |
| 2007 | 2 ha | 2 ha | 5 ha |
| 2008 | 11 ha | 13 ha | 24 ha |
| 2009 | 11 ha | under 1 ha | 11 ha |
| 2010 | 7 ha | 12 ha | 18 ha |
| 2011 | 3 ha | 2 ha | 4 ha |
| 2012 | 4 ha | 6 ha | 10 ha |
| 2013 | under 1 ha | under 1 ha | 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | 4 ha | 5 ha | 9 ha |
| 2017 | 4 ha | under 1 ha | 4 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | 5 ha | 11 ha | 15 ha |
| 2021 | 1 ha | 2 ha | 3 ha |
| 2022 | under 1 ha | 2 ha | 3 ha |
| 2023 | 2 ha | 26 ha | 28 ha |
| 2024 | 11 ha | 45 ha | 56 ha |
| 2025 | 15 ha | 46 ha | 61 ha |
What is causing deforestation around Macheng?
- Loggingcan grow back61% · 194 ha
- Towns and roadscleared for good29% · 93 ha
- Farms, pasture and plantationscleared for good6.8% · 22 ha
Also: mining and energy, 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
- 6,010 ha
- Forest in 2020
- 6,050 ha
- Overall change
- +41 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Macheng stayed about the same size, at about 6,050 hectares: new forest grew on about 133 hectares, and about 93 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 Macheng
What is the air quality (AQI) in Macheng right now?
The latest reading for Macheng shows an AQI of 62 (Moderate), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 3 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 Macheng today?
At AQI 62 (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 Macheng been like this week?
Over the last 7 days, the CAMS air-quality model put Macheng's daily AQI at 75 on average, from 63 on Nov 9 to an hourly peak of 135 on Nov 8. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Macheng lost since 2001?
Since 2001, the area within 10 km of Macheng has lost about 318 hectares of forest (about 440 football pitches): 12% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 116 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Macheng stayed about the same size, at about 6,050 hectares: new forest grew on about 133 hectares, and about 93 hectares were lost.
What is the tree count in Macheng?
Macheng has an estimated 30,573 trees across the 12.36 km² of land measured — 9.9% tree cover, 20 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Macheng need?
Macheng needs roughly 62,073 more trees to close a 20-point shortfall against its 30% tree-cover target — about 1,366 t of extra CO₂ absorbed per year once grown.
How are Macheng'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 Macheng; the tree count is an estimate derived from that cover.
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