City report · Shaanxi, China
Weinan Air quality today
Air quality in Weinan currently reads AQI 181 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 181
Unhealthy
- PM2.5, fine particles (µg/m³)
- 98.1
- tree cover
- 19.2%
- trees in this area
- 60.0K
- more trees needed
- 65.0K
Measured across a 2 km radius around Linwei District, Weinan, Shaanxi, China (12.57 km²), from a satellite image of Sep 4, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Weinan · AQI 181 (Unhealthy)
Weinan's tree count comes to 60,017 trees across 12.51 km² of land, 21 points below the 40% tree-cover level considered healthy for this area, so roughly 65,018 more trees would close the gap.
Air quality detail
Air quality in Weinan today: AQI 181, Unhealthy
Main pollutant: PM2.5 · Observed Nov 11, 21:00 local time via World Air Quality Index Project ground stations, US EPA index. Values in µg/m³.
Ground station · Weinan (渭南), 400 m away · median of 2 stations
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
98.1
PM10
129.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Shaanxi Provincial Environmental Protection Office (陕西省环保厅)
- 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 Weinan's daily AQI at 81 on average, from 65 on Nov 9 to an hourly peak of 154 on Nov 5.
Where Weinan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Weinan: Critically low
19.2% tree cover against a 40% healthy-neighborhood target, across 12.51 km² of land.
Trees in this area
60,017
Target trees
125,035
More trees needed
65,018
CO₂ if planted / yr
1,430 t
Deforestation · 2001–2025
How much forest has Weinan lost?
There was almost no forest around Weinan 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
- 582 ha
- Forest in 2020
- 833 ha
- Overall change
- +251 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Weinan grew from about 582 hectares to 833 hectares, a net gain of about 251 hectares (+43%). New forest grew on about 256 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
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Frequently asked
Questions about Weinan
What is the air quality (AQI) in Weinan right now?
The latest reading for Weinan shows an AQI of 181 (Unhealthy), measured Nov 11, 21:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Weinan (渭南), 400 m away). The main pollutant is PM2.5. Everyone should limit long outdoor exertion; sensitive groups more so.
Is it safe to exercise outside in Weinan today?
At AQI 181 (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 Weinan been like this week?
Over the last 7 days, the CAMS air-quality model put Weinan's daily AQI at 81 on average, from 65 on Nov 9 to an hourly peak of 154 on Nov 5. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Weinan lost since 2001?
There was almost no forest around Weinan 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 Weinan grew from about 582 hectares to 833 hectares, a net gain of about 251 hectares (+43%). New forest grew on about 256 hectares, while 4 hectares were lost.
What is the tree count in Weinan?
Weinan has an estimated 60,017 trees across the 12.51 km² of land measured — 19.2% tree cover, 21 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Weinan need?
Weinan needs roughly 65,018 more trees to close a 21-point shortfall against its 40% tree-cover target — about 1,430 t of extra CO₂ absorbed per year once grown.
How are Weinan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Linwei 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 Linwei District; the tree count is an estimate derived from that cover.
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