City report · Henan, China
Tanghe Air quality today
Air quality in Tanghe currently reads AQI 95 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 95
Moderate
- PM2.5, fine particles (µg/m³)
- 31.6
- tree cover
- 10.9%
- trees in this area
- 33.9K
- more trees needed
- 59.4K
Measured across a 2 km radius around Tanghe County, Nanyang, Henan, China (12.57 km²), from a satellite image of Aug 9, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Tanghe · AQI 95 (Moderate)
Tanghe's tree count comes to 33,901 trees across 12.44 km² of land, 19 points below the 30% tree-cover level considered healthy for this area, so roughly 59,404 more trees would close the gap.
Air quality detail
Air quality in Tanghe today: AQI 95, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 225 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 7 station cities within 225 km, e.g. Xiangyang and Suizhou
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
31.6
PM10
39.9
NO₂
34.9
O₃
22.0
SO₂
8.7
CO
420.0
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put Tanghe's daily AQI at 114 on average, from 93 on Nov 10 to an hourly peak of 160 on Nov 5.
Where Tanghe stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Tanghe: Critically low
10.9% tree cover against a 30% healthy-neighborhood target, across 12.44 km² of land.
Trees in this area
33,901
Target trees
93,305
More trees needed
59,404
CO₂ if planted / yr
1,307 t
Deforestation · 2001–2025
How much forest has Tanghe lost?
There was almost no forest around Tanghe 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
- 468 ha
- Forest in 2020
- 731 ha
- Overall change
- +263 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Tanghe grew from about 468 hectares to 731 hectares, a net gain of about 263 hectares (+56%). New forest grew on about 263 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 Tanghe
What is the air quality (AQI) in Tanghe right now?
The latest reading for Tanghe shows an AQI of 95 (Moderate), observed Nov 11, 00:00 local time via Open-Meteo / CAMS, corrected with 7 ground-station cities within 225 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Tanghe today?
At AQI 95 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Tanghe been like this week?
Over the last 7 days, the CAMS air-quality model put Tanghe's daily AQI at 114 on average, from 93 on Nov 10 to an hourly peak of 160 on Nov 5. On 5 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Tanghe lost since 2001?
There was almost no forest around Tanghe 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 Tanghe grew from about 468 hectares to 731 hectares, a net gain of about 263 hectares (+56%). New forest grew on about 263 hectares, while under 1 hectare was lost.
What is the tree count in Tanghe?
Tanghe has an estimated 33,901 trees across the 12.44 km² of land measured — 10.9% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Tanghe need?
Tanghe needs roughly 59,404 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,307 t of extra CO₂ absorbed per year once grown.
How are Tanghe'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 Tanghe County; the tree count is an estimate derived from that cover.
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