City report · Jilin, China
Longshan Air quality today
Air quality in Longshan currently reads AQI 169 (Unhealthy): Everyone should limit long outdoor exertion; sensitive groups more so.
Air quality right now
AQI 169
Unhealthy
- PM2.5, fine particles (µg/m³)
- 80.7
- tree cover
- 26.9%
- trees in this area
- 81.2K
- more trees needed
- 39.5K
Measured across a 2 km radius around Longshan District, Liaoyuan, Jilin, China (12.57 km²), from a satellite image of Sep 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Longshan · AQI 169 (Unhealthy)
Longshan's tree count comes to 81,213 trees across 12.08 km² of land, 13 points below the 40% tree-cover level considered healthy for this area, so roughly 39,550 more trees would close the gap.
Air quality detail
Air quality in Longshan today: AQI 169, 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 · Environment protection office, Liaoyuan (辽源环保局), 1 km away
Health signal
Everyone should limit long outdoor exertion; sensitive groups more so.
PM2.5
80.7
PM10
131.8
NO₂
—
O₃
—
SO₂
—
CO
—
Data: World Air Quality Index Project, Environmental Protection Agency of Jilin Province (吉林省环境保护厅), 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
- 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 Longshan's daily AQI at 82 on average, from 54 on Nov 6 to an hourly peak of 170 on Nov 5.
Where Longshan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Longshan: Below target
26.9% tree cover against a 40% healthy-neighborhood target, across 12.08 km² of land.
Trees in this area
81,213
Target trees
120,763
More trees needed
39,550
CO₂ if planted / yr
870.1 t
Deforestation · 2001–2025
How much forest has Longshan lost?
Since 2001, the area within 10 km of Longshan has lost about 32 hectares of forest (about 45 football pitches): 18% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 4 hectares (11%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from June 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 32 haabout 45 football pitches
- Share of its forest
- 18%of what there was in 2000
- Cleared for good
- 4 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 9 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 | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | 3 ha | 4 ha |
| 2007 | under 1 ha | under 1 ha | 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | under 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | 1 ha | 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | 1 ha | 2 ha |
| 2015 | under 1 ha | 2 ha | 2 ha |
| 2016 | under 1 ha | 1 ha | 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | 2 ha | 2 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | 2 ha | 2 ha |
| 2022 | under 1 ha | 3 ha | 3 ha |
| 2023 | under 1 ha | 2 ha | 2 ha |
| 2024 | under 1 ha | 2 ha | 2 ha |
| 2025 | 2 ha | 7 ha | 9 ha |
What is causing deforestation around Longshan?
- Loggingcan grow back74% · 24 ha
- Towns and roadscleared for good9.9% · 3 ha
- Unknown causescause unknown15% · 5 ha
Also: farms, pasture and plantations.
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
- 3,720 ha
- Forest in 2020
- 6,050 ha
- Overall change
- +2,330 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Longshan grew from about 3,720 hectares to 6,050 hectares, a net gain of about 2,330 hectares (+63%). New forest grew on about 2,390 hectares, while 62 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
In the same region
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Same 2 km radius, same index — so they compare directly.
- Siping68.9 km
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- Air quality
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- Gongzhuling73.1 km
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- Air quality
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- Kaiyuan, Liaoning97.8 km
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- 9%
- Air quality
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- Changchun111.6 km
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- Air quality
- 163
- Tieling124.8 km
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- Tree cover
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- Air quality
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- Huadian131.0 km
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- Tree cover
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- Air quality
- 169
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Frequently asked
Questions about Longshan
What is the air quality (AQI) in Longshan right now?
The latest reading for Longshan shows an AQI of 169 (Unhealthy), measured Nov 11, 21:00 local time by the Environment protection office, Liaoyuan (辽源环保局) ground monitoring station, 1 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 Longshan today?
At AQI 169 (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 Longshan been like this week?
Over the last 7 days, the CAMS air-quality model put Longshan's daily AQI at 82 on average, from 54 on Nov 6 to an hourly peak of 170 on Nov 5. On 2 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Longshan lost since 2001?
Since 2001, the area within 10 km of Longshan has lost about 32 hectares of forest (about 45 football pitches): 18% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 4 hectares (11%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Longshan grew from about 3,720 hectares to 6,050 hectares, a net gain of about 2,330 hectares (+63%). New forest grew on about 2,390 hectares, while 62 hectares were lost.
What is the tree count in Longshan?
Longshan has an estimated 81,213 trees across the 12.08 km² of land measured — 26.9% tree cover, 13 percentage points short of the 40% tree-cover target set for this area.
How many more trees does Longshan need?
Longshan needs roughly 39,550 more trees to close a 13-point shortfall against its 40% tree-cover target — about 870.1 t of extra CO₂ absorbed per year once grown.
How are Longshan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Longshan 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 Longshan District; the tree count is an estimate derived from that cover.
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