City report · Inner Mongolia, China
Bayan Nur Air quality today
Air quality in Bayan Nur currently reads AQI 184 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
AQI 184
Air quality right now
Unhealthy
- PM2.5, fine particles (µg/m³)
- 102.0
- tree cover
- 17.1%
- trees in this area
- 53.7K
- more trees needed
- 71.9K
Measured across a 2 km radius around Linhe District, Bayannur, Inner Mongolia, China (12.57 km²), from a satellite image of Sep 25, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Bayan Nur · AQI 184 (Unhealthy)
Bayan Nur's tree count comes to 53,668 trees across 12.56 km² of land, 23 points below the 40% tree-cover level considered healthy for this area, so roughly 71,871 more trees would close the gap.
Air quality detail
Air quality in Bayan Nur today: AQI 184, Unhealthy
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · City Environmental Building, Bayannur (巴彦淖尔市环保大楼), 1.3 km away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
102.0
PM10
171.2
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project
- 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 Bayan Nur's daily AQI at 86 on average, from 71 on Nov 9 to an hourly peak of 198 on Nov 5.
Where Bayan Nur stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Bayan Nur: Critically low
17.1% tree cover against a 40% healthy-neighborhood target, across 12.56 km² of land.
Trees in this area
53,668
Target trees
125,539
More trees needed
71,871
CO₂ if planted / yr
1,581 t
Deforestation · 2001–2025
How much forest has Bayan Nur lost?
There was almost no forest around Bayan Nur 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 July 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 Bayan Nur
What is the air quality (AQI) in Bayan Nur right now?
The latest reading for Bayan Nur shows an AQI of 184 (Unhealthy), measured Nov 12, 00:00 local time by the City Environmental Building, Bayannur (巴彦淖尔市环保大楼) ground monitoring station, 1.3 km away, via OpenAQ. The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Bayan Nur today?
At AQI 184 (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 Bayan Nur been like this week?
Over the last 7 days, the CAMS air-quality model put Bayan Nur's daily AQI at 86 on average, from 71 on Nov 9 to an hourly peak of 198 on Nov 5. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Bayan Nur lost since 2001?
There was almost no forest around Bayan Nur 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 Bayan Nur?
Bayan Nur has an estimated 53,668 trees across the 12.56 km² of land measured — 17.1% tree cover, 23 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Bayan Nur need?
Bayan Nur needs roughly 71,871 more trees to close a 23-point shortfall against its 40% tree-cover target — about 1,581 t of extra CO₂ absorbed per year once grown.
How are Bayan Nur's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Linhe 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 Linhe District; the tree count is an estimate derived from that cover.
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