City report · Gansu, China
Jiayuguan Air quality today
Air quality in Jiayuguan currently reads AQI 75 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 75
Moderate
- PM2.5, fine particles (µg/m³)
- 22.1
- tree cover
- 11.2%
- trees in this area
- 35.2K
- more trees needed
- 59.0K
Measured across a 2 km radius around Jiayuguan, Jiayuguan City, Gansu, China (12.57 km²), from a satellite image of Sep 24, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Jiayuguan · AQI 75 (Moderate)
Jiayuguan's tree count comes to 35,151 trees across 12.56 km² of land, 19 points below the 30% tree-cover level considered healthy for this area, so roughly 59,003 more trees would close the gap.
Air quality detail
Air quality in Jiayuguan today: AQI 75, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 23:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Bureau of Meteorology, Jiayuguan (嘉峪关气象局), 4.5 km away
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
22.1
PM10
43.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Gangsu Environmental Protection Agency (甘肃省生态环境厅), China National Urban air quality real-time publishing platform (全国城市空气质量实时发布平台)
- 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 Jiayuguan's daily AQI at 68 on average, from 57 on Nov 7 to an hourly peak of 104 on Nov 4.
Where Jiayuguan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Jiayuguan: Critically low
11.2% tree cover against a 30% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
35,151
Target trees
94,154
More trees needed
59,003
CO₂ if planted / yr
1,298 t
Deforestation · 2001–2025
How much forest has Jiayuguan lost?
There was almost no forest around Jiayuguan 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 September 2017 of a 5 × 5 km area in the city center.
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. Images: contains modified Copernicus Sentinel data. How it's measured
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Frequently asked
Questions about Jiayuguan
What is the air quality (AQI) in Jiayuguan right now?
The latest reading for Jiayuguan shows an AQI of 75 (Moderate), measured Nov 11, 23:00 local time by the Bureau of Meteorology, Jiayuguan (嘉峪关气象局) ground monitoring station, 4.5 km away, via OpenAQ. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Jiayuguan today?
At AQI 75 (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 Jiayuguan been like this week?
Over the last 7 days, the CAMS air-quality model put Jiayuguan's daily AQI at 68 on average, from 57 on Nov 7 to an hourly peak of 104 on Nov 4. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Jiayuguan lost since 2001?
There was almost no forest around Jiayuguan 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.
What is the tree count in Jiayuguan?
Jiayuguan has an estimated 35,151 trees across the 12.56 km² of land measured — 11.2% tree cover, 19 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Jiayuguan need?
Jiayuguan needs roughly 59,003 more trees to close a 19-point shortfall against its 30% tree-cover target — about 1,298 t of extra CO₂ absorbed per year once grown.
How are Jiayuguan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jiayuguan, 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 Jiayuguan; the tree count is an estimate derived from that cover.
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