City report · Shaanxi, China
Yan’an Air quality today
Air quality in Yan’an currently reads AQI 106 (Unhealthy for sensitive groups): Sensitive groups should limit long or intense outdoor activity.
AQI 106
Air quality right now
Unhealthy for sensitive groups
- PM2.5, fine particles (µg/m³)
- 37.5
- tree cover
- 54.3%
- trees in this area
- 171K
- more trees needed
- 0
Measured across a 2 km radius around Baota District, Yan'An, Shaanxi, China (12.57 km²), from a satellite image of Sep 14, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yan’an · AQI 106 (Unhealthy for sensitive groups)
Yan’an's tree count comes to 170,588 trees across 12.57 km², already at or above the 35% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Yan’an today: AQI 106, Unhealthy for sensitive groups
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 · Yanan (延安), 1.5 km away · median of 2 stations
Health signal
Sensitive groups should limit long or intense outdoor activity.
PM2.5
37.5
PM10
62.0
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Shaanxi Provincial Environmental Protection Office (陕西省环保厅)
- Outdoor exercise
- Children, older adults and people with asthma or heart disease should cut down long or hard exercise
- Windows
- Close them to keep the outside air out
- Mask
- Sensitive groups: an N95 outdoors
- Air purifier
- Run one, especially in bedrooms
Over the last 7 days, the CAMS air-quality model put Yan’an's daily AQI at 50 on average, from 29 on Nov 9 to an hourly peak of 85 on Nov 7.
Where Yan’an stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yan’an: Healthy tree cover
54.3% tree cover against a 35% healthy-neighborhood target, across 12.57 km².
Trees in this area
170,588
Target trees
170,588
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Yan’an lost?
Since 2001, the area within 10 km of Yan’an has lost about 14 hectares of forest (about 20 football pitches): 3.4% of the forest it had in 2000. Most of it (95%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 14 haabout 20 football pitches
- Share of its forest
- 3.4%of what there was in 2000
- Cleared for good
- 13 hadeforestation: turned into farms, mines or towns
The worst year was 2010, when about 3 hectares of forest were lost.
Hectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | under 1 ha | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | 3 ha | under 1 ha | 3 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | 2 ha | under 1 ha | 2 ha |
| 2013 | 1 ha | under 1 ha | 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | 2 ha | under 1 ha | 2 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | under 1 ha | under 1 ha |
What is causing deforestation around Yan’an?
- Towns and roadscleared for good52% · 7 ha
- Mining and energycleared for good26% · 4 ha
- Farms, pasture and plantationscleared for good17% · 2 ha
Also: logging, unknown causes.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 6,250 ha
- Forest in 2020
- 7,130 ha
- Overall change
- +880 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yan’an grew from about 6,250 hectares to 7,130 hectares, a net gain of about 880 hectares (+14%). New forest grew on about 1,300 hectares, while 422 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 Yan’an
What is the air quality (AQI) in Yan’an right now?
The latest reading for Yan’an shows an AQI of 106 (Unhealthy for sensitive groups), measured Nov 12, 00:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Yanan (延安), 1.5 km away). The main pollutant is PM2.5. Sensitive groups should limit long or intense outdoor activity.
Is it safe to exercise outside in Yan’an today?
At AQI 106 (Unhealthy for sensitive groups): children, older adults and people with asthma or heart disease should cut down long or hard exercise. Windows: close them to keep the outside air out. Masks: sensitive groups: an N95 outdoors. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Yan’an been like this week?
Over the last 7 days, the CAMS air-quality model put Yan’an's daily AQI at 50 on average, from 29 on Nov 9 to an hourly peak of 85 on Nov 7. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Yan’an lost since 2001?
Since 2001, the area within 10 km of Yan’an has lost about 14 hectares of forest (about 20 football pitches): 3.4% of the forest it had in 2000. Most of it (95%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Yan’an grew from about 6,250 hectares to 7,130 hectares, a net gain of about 880 hectares (+14%). New forest grew on about 1,300 hectares, while 422 hectares were lost.
What is the tree count in Yan’an?
Yan’an has an estimated 170,588 trees across the 12.57 km² measured — 54.3% tree cover, already past the 35% tree-cover target set for this area.
How many more trees does Yan’an need?
Yan’an has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Yan’an's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Baota 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 Baota District; the tree count is an estimate derived from that cover.
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