City report · Henan, China
Dengzhou Air quality today
Air quality in Dengzhou currently reads AQI 159 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 159
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 72.7
- tree cover
- 15.1%
- trees in this area
- 47.4K
- more trees needed
- 78.1K
Measured across a 2 km radius around Dengzhou, Nanyang, Henan, China (12.57 km²), from a satellite image of Sep 6, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Dengzhou · AQI 159 (Unhealthy)
Dengzhou's tree count comes to 47,391 trees across 12.56 km² of land, 25 points below the 40% tree-cover level considered healthy for this area, so roughly 78,147 more trees would close the gap.
Air quality detail
Air quality in Dengzhou today: AQI 159, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 250 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 5 station cities within 250 km, e.g. Pingdingshan and Luoyang
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
72.7
PM10
68.9
NO₂
23.2
O₃
52.0
SO₂
10.7
CO
661.0
- Outdoor exercise
- Everyone should cut down long or hard exercise; sensitive groups should avoid it
- Windows
- Keep them closed
- Mask
- Wear an N95 outdoors
- Air purifier
- Run one
Over the last 7 days, the CAMS air-quality model put Dengzhou's daily AQI at 110 on average, from 76 on Nov 5 to an hourly peak of 167 on Nov 11.
Where Dengzhou stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Dengzhou: Critically low
15.1% tree cover against a 40% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
47,391
Target trees
125,538
More trees needed
78,147
CO₂ if planted / yr
1,719 t
Deforestation · 2001–2025
How much forest has Dengzhou lost?
There was almost no forest around Dengzhou in 2000, so there has been almost nothing to lose 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 August 2017 of a 5 × 5 km area in the city center.
Forest gained and lost, 2000–2020
- Forest in 2000
- 920 ha
- Forest in 2020
- 1,200 ha
- Overall change
- +275 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Dengzhou grew from about 920 hectares to 1,200 hectares, a net gain of about 275 hectares (+30%). New forest grew on about 279 hectares, while 4 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
In the same region
Measured cities near Dengzhou
Same 2 km radius, same index — so they compare directly.
Build your own
Compare Dengzhou with anywhere
This place
Dengzhou
Use this data
Put Dengzhou's numbers on your site
Free to embed. Updates itself as the measurement refreshes.
Frequently asked
Questions about Dengzhou
What is the air quality (AQI) in Dengzhou right now?
The latest reading for Dengzhou shows an AQI of 159 (Unhealthy), observed Nov 11, 19:00 local time via Open-Meteo / CAMS, corrected with 5 ground-station cities within 250 km, US EPA index. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Dengzhou today?
At AQI 159 (Unhealthy): everyone should cut down long or hard exercise; sensitive groups should avoid it. Windows: keep them closed. Masks: wear an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Dengzhou been like this week?
Over the last 7 days, the CAMS air-quality model put Dengzhou's daily AQI at 110 on average, from 76 on Nov 5 to an hourly peak of 167 on Nov 11. On 4 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Dengzhou lost since 2001?
There was almost no forest around Dengzhou in 2000, so there has been almost nothing to lose 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 Dengzhou grew from about 920 hectares to 1,200 hectares, a net gain of about 275 hectares (+30%). New forest grew on about 279 hectares, while 4 hectares were lost.
What is the tree count in Dengzhou?
Dengzhou has an estimated 47,391 trees across the 12.56 km² of land measured — 15.1% tree cover, 25 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Dengzhou need?
Dengzhou needs roughly 78,147 more trees to close a 25-point shortfall against its 40% tree-cover target — about 1,719 t of extra CO₂ absorbed per year once grown.
How are Dengzhou'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 Dengzhou; the tree count is an estimate derived from that cover.
See your own area
What does your neighborhood look like?
Pick any point and radius to get the same air-quality and tree-cover breakdown.
Check my address