City report · Anhui, China
Ma’anshan Air quality today
Air quality in Ma’anshan currently reads AQI 114 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 114
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 40.8
- tree cover
- 33.4%
- trees in this area
- 101K
- more trees needed
- 4.8K
Measured across a 2 km radius around Huashan District, Maanshan, Anhui, China (12.57 km²), from a satellite image of Sep 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Ma’anshan · AQI 114 (Unhealthy for sensitive groups)
Ma’anshan's tree count comes to 100,837 trees across 12.08 km² of land, 2 points below the 35% tree-cover level considered healthy for this area, so roughly 4,831 more trees would close the gap.
Air quality detail
Air quality in Ma’anshan today: AQI 114, 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 · Hudong Road No.4 Elementary School, Maanshan (马鞍山湖东路四小), 400 m away
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
40.8
PM10
77.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Anhui Environmental Protection Agency (安徽省生态环境厅)
- 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 Ma’anshan's daily AQI at 101 on average, from 67 on Nov 8 to an hourly peak of 184 on Nov 6.
Where Ma’anshan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Ma’anshan: Below target
33.4% tree cover against a 35% healthy-neighborhood target, across 12.08 km² of land.
Trees in this area
100,837
Target trees
105,668
More trees needed
4,831
CO₂ if planted / yr
106.3 t
Deforestation · 2001–2025
How much forest has Ma’anshan lost?
Since 2001, the area within 10 km of Ma’anshan has lost about 83 hectares of forest (about 120 football pitches): 5.4% of the forest it had in 2000. Most of it (56%) 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
- 83 haabout 120 football pitches
- Share of its forest
- 5.4%of what there was in 2000
- Cleared for good
- 46 hadeforestation: turned into farms, mines or towns
The worst year was 2024, when about 15 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 | 1 ha | 2 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | 1 ha |
| 2006 | 2 ha | 2 ha | 4 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | 4 ha | under 1 ha | 5 ha |
| 2009 | 1 ha | under 1 ha | 1 ha |
| 2010 | 1 ha | under 1 ha | 2 ha |
| 2011 | 4 ha | 7 ha | 11 ha |
| 2012 | 4 ha | under 1 ha | 5 ha |
| 2013 | 3 ha | under 1 ha | 3 ha |
| 2014 | 2 ha | under 1 ha | 3 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | 1 ha | 2 ha |
| 2017 | 1 ha | 4 ha | 6 ha |
| 2018 | under 1 ha | 4 ha | 5 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | 2 ha | 3 ha |
| 2021 | 5 ha | under 1 ha | 5 ha |
| 2022 | 1 ha | 2 ha | 3 ha |
| 2023 | under 1 ha | 1 ha | 2 ha |
| 2024 | 11 ha | 4 ha | 15 ha |
| 2025 | 2 ha | 3 ha | 6 ha |
What is causing deforestation around Ma’anshan?
- Loggingcan grow back41% · 34 ha
- Towns and roadscleared for good28% · 23 ha
- Mining and energycleared for good18% · 15 ha
Also: 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
- 5,040 ha
- Forest in 2020
- 6,040 ha
- Overall change
- +993 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Ma’anshan grew from about 5,040 hectares to 6,040 hectares, a net gain of about 993 hectares (+20%). New forest grew on about 1,090 hectares, while 98 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 Ma’anshan
What is the air quality (AQI) in Ma’anshan right now?
The latest reading for Ma’anshan shows an AQI of 114 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by the Hudong Road No.4 Elementary School, Maanshan (马鞍山湖东路四小) ground monitoring station, 400 m 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 Ma’anshan today?
At AQI 114 (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 Ma’anshan been like this week?
Over the last 7 days, the CAMS air-quality model put Ma’anshan's daily AQI at 101 on average, from 67 on Nov 8 to an hourly peak of 184 on Nov 6. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Ma’anshan lost since 2001?
Since 2001, the area within 10 km of Ma’anshan has lost about 83 hectares of forest (about 120 football pitches): 5.4% of the forest it had in 2000. Most of it (56%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Ma’anshan grew from about 5,040 hectares to 6,040 hectares, a net gain of about 993 hectares (+20%). New forest grew on about 1,090 hectares, while 98 hectares were lost.
What is the tree count in Ma’anshan?
Ma’anshan has an estimated 100,837 trees across the 12.08 km² of land measured — 33.4% tree cover, 2 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Ma’anshan need?
Ma’anshan needs roughly 4,831 more trees to close a 2-point shortfall against its 35% tree-cover target — about 106.3 t of extra CO₂ absorbed per year once grown.
How are Ma’anshan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Huashan District, 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 Huashan District; the tree count is an estimate derived from that cover.
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