City report · Hebei, China
Hengshui Air quality today
Air quality in Hengshui currently reads AQI 116 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
Air quality right now
AQI 116
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 41.4
- tree cover
- 6.8%
- trees in this area
- 21.3K
- more trees needed
- 88.4K
Measured across a 2 km radius around Taocheng District, Hengshui, Hebei, China (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Hengshui · AQI 116 (Unhealthy for sensitive groups)
Hengshui's tree count comes to 21,320 trees across 12.54 km² of land, 28 points below the 35% tree-cover level considered healthy for this area, so roughly 88,416 more trees would close the gap.
Air quality detail
Air quality in Hengshui today: AQI 116, 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 · Hengshui (衡水), 1.2 km away · median of 2 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
41.4
PM10
56.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Hebei Province Environment Protection Agency (河北省空气质量自动发布系统)
- 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 Hengshui's daily AQI at 94 on average, from 70 on Nov 8 to an hourly peak of 158 on Nov 9.
Where Hengshui stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Hengshui: Critically low
6.8% tree cover against a 35% healthy-neighborhood target, across 12.54 km² of land.
Trees in this area
21,320
Target trees
109,736
More trees needed
88,416
CO₂ if planted / yr
1,945 t
Deforestation · 2001–2025
How much forest has Hengshui lost?
There was very little forest around Hengshui in 2000, about 26 hectares, and about 5 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 June 2017 of a 5 × 5 km area in the city center.
The worst year was 2001, when about 2 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 | 2 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 | 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 | 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 Hengshui?
- Towns and roadscleared for good34% · 2 ha
- Unknown causescause unknown66% · 4 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
- 605 ha
- Forest in 2020
- 1,880 ha
- Overall change
- +1,270 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Hengshui grew from about 605 hectares to 1,880 hectares, a net gain of about 1,270 hectares (+210%). New forest grew on about 1,270 hectares, while under 1 hectare was 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 Hengshui
What is the air quality (AQI) in Hengshui right now?
The latest reading for Hengshui shows an AQI of 116 (Unhealthy for sensitive groups), measured Nov 11, 22:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Hengshui (衡水), 1.2 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Hengshui today?
At AQI 116 (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 Hengshui been like this week?
Over the last 7 days, the CAMS air-quality model put Hengshui's daily AQI at 94 on average, from 70 on Nov 8 to an hourly peak of 158 on Nov 9. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Hengshui lost since 2001?
There was very little forest around Hengshui in 2000, about 26 hectares, and about 5 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 Hengshui grew from about 605 hectares to 1,880 hectares, a net gain of about 1,270 hectares (+210%). New forest grew on about 1,270 hectares, while under 1 hectare was lost.
What is the tree count in Hengshui?
Hengshui has an estimated 21,320 trees across the 12.54 km² of land measured — 6.8% tree cover, 28 percentage points short of the 35% tree-cover target set for this area.
How many more trees does Hengshui need?
Hengshui needs roughly 88,416 more trees to close a 28-point shortfall against its 35% tree-cover target — about 1,945 t of extra CO₂ absorbed per year once grown.
How are Hengshui's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Taocheng 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 Taocheng District; the tree count is an estimate derived from that cover.
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