City report · Jiangsu, China
Tongshan Air quality today
Air quality in Tongshan currently reads AQI 127 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 127
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 46.1
- tree cover
- 34.1%
- trees in this area
- 107K
- more trees needed
- 2.8K
Measured across a 2 km radius around Tongshan District, Xuzhou, Jiangsu, China (12.57 km²), from a satellite image of Sep 7, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tongshan · AQI 127 (Unhealthy for sensitive groups)
Tongshan's tree count comes to 107,021 trees across 12.56 km² of land, 1 points below the 35% tree-cover level considered healthy for this area, so roughly 2,825 more trees would close the gap.
Air quality detail
Air quality in Tongshan today: AQI 127, 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 · New Town , Xuzhou (徐州新城区), 10.2 km away · median of 3 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
46.1
PM10
71.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Jiangsu Environmental Protection public network (江苏省城市空气PM2.5等试运行监测数据平台)
- 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 Tongshan's daily AQI at 114 on average, from 65 on Nov 8 to an hourly peak of 219 on Nov 6.
Where Tongshan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tongshan: Below target
34.1% tree cover against a 35% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
107,021
Target trees
109,846
More trees needed
2,825
CO₂ if planted / yr
62.1 t
Deforestation · 2001–2025
How much forest has Tongshan lost?
Since 2001, the area within 10 km of Tongshan has lost about 1 hectare of forest: under 1% of the forest it had in 2000. The biggest cause was towns and roads (27%). Almost none of it was deforestation, meaning forest cleared for good.
2017: satellite photo from July 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 1 ha
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- under 1 hadeforestation: turned into farms, mines or towns
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 | under 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 | 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 Tongshan?
- Towns and roadscleared for good27% · under 1 ha
- Unknown causescause unknown73% · under 1 ha
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
- 2,610 ha
- Forest in 2020
- 3,410 ha
- Overall change
- +800 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tongshan grew from about 2,610 hectares to 3,410 hectares, a net gain of about 800 hectares (+31%). New forest grew on about 803 hectares, while 3 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 Tongshan
What is the air quality (AQI) in Tongshan right now?
The latest reading for Tongshan shows an AQI of 127 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is New Town , Xuzhou (徐州新城区), 10.2 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Tongshan today?
At AQI 127 (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 Tongshan been like this week?
Over the last 7 days, the CAMS air-quality model put Tongshan's daily AQI at 114 on average, from 65 on Nov 8 to an hourly peak of 219 on Nov 6. On 4 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Tongshan lost since 2001?
Since 2001, the area within 10 km of Tongshan has lost about 1 hectare of forest: under 1% of the forest it had in 2000. The biggest cause was towns and roads (27%). Almost none of it was deforestation, meaning forest cleared for good. Comparing satellite maps from 2000 and 2020, the forest around Tongshan grew from about 2,610 hectares to 3,410 hectares, a net gain of about 800 hectares (+31%). New forest grew on about 803 hectares, while 3 hectares were lost.
What is the tree count in Tongshan?
Tongshan has an estimated 107,021 trees across the 12.56 km² of land measured — 34.1% tree cover, 1 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Tongshan need?
Tongshan needs roughly 2,825 more trees to close a 1-point shortfall against its 35% tree-cover target — about 62.1 t of extra CO₂ absorbed per year once grown.
How are Tongshan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Tongshan 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 Tongshan District; the tree count is an estimate derived from that cover.
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