City report · Jiangsu, China
Dongtai Air quality today
Air quality in Dongtai currently reads AQI 136 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 136
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 52.8
- tree cover
- 9.6%
- trees in this area
- 29.6K
- more trees needed
- 78.4K
Measured across a 2 km radius around Dongtai, Yancheng, Jiangsu, China (12.57 km²), from a satellite image of Jul 31, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Dongtai · AQI 136 (Unhealthy for sensitive groups)
Dongtai's tree count comes to 29,647 trees across 12.36 km² of land, 25 points below the 35% tree-cover level considered healthy for this area, so roughly 78,440 more trees would close the gap.
Air quality detail
Air quality in Dongtai today: AQI 136, Unhealthy for sensitive groups
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 31 ground-station cities within 245 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 31 station cities within 245 km, e.g. Taizhou and Yancheng
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
52.8
PM10
91.5
NO₂
50.0
O₃
0.0
SO₂
8.0
CO
732.0
- 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 Dongtai's daily AQI at 90 on average, from 43 on Nov 8 to an hourly peak of 170 on Nov 11.
Where Dongtai stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Dongtai: Critically low
9.6% tree cover against a 35% healthy-neighborhood target, across 12.36 km² of land.
Trees in this area
29,647
Target trees
108,087
More trees needed
78,440
CO₂ if planted / yr
1,726 t
Deforestation · 2001–2025
How much forest has Dongtai lost?
There was very little forest around Dongtai in 2000, about 77 hectares, and about 3 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.
2018: satellite photo from June 2018 of a 5 × 5 km area in the city center.
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 Dongtai?
- Towns and roadscleared for good16% · under 1 ha
- Farms, pasture and plantationscleared for good3.1% · under 1 ha
- Unknown causescause unknown84% · 3 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
- 239 ha
- Forest in 2020
- 415 ha
- Overall change
- +176 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Dongtai grew from about 239 hectares to 415 hectares, a net gain of about 176 hectares (+74%). New forest grew on about 179 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 Dongtai
What is the air quality (AQI) in Dongtai right now?
The latest reading for Dongtai shows an AQI of 136 (Unhealthy for sensitive groups), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 31 ground-station cities within 245 km, US EPA index. The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Dongtai today?
At AQI 136 (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 Dongtai been like this week?
Over the last 7 days, the CAMS air-quality model put Dongtai's daily AQI at 90 on average, from 43 on Nov 8 to an hourly peak of 170 on Nov 11. On 3 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Dongtai lost since 2001?
There was very little forest around Dongtai in 2000, about 77 hectares, and about 3 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 Dongtai grew from about 239 hectares to 415 hectares, a net gain of about 176 hectares (+74%). New forest grew on about 179 hectares, while 3 hectares were lost.
What is the tree count in Dongtai?
Dongtai has an estimated 29,647 trees across the 12.36 km² of land measured — 9.6% tree cover, 25 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Dongtai need?
Dongtai needs roughly 78,440 more trees to close a 25-point shortfall against its 35% tree-cover target — about 1,726 t of extra CO₂ absorbed per year once grown.
How are Dongtai'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 Dongtai; the tree count is an estimate derived from that cover.
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