City report · Gyeongsangnam-do, South Korea
Yangsan Air quality today
Air quality in Yangsan currently reads AQI 56 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 56
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 12.0
- tree cover
- 42.2%
- trees in this area
- 131K
- more trees needed
- 0
Measured across a 2 km radius around Jungbu-dong, Yangsan-si, Gyeongsangnam-do, South Korea (12.57 km²), from a satellite image of Sep 12, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yangsan · AQI 56 (Moderate)
Yangsan's tree count comes to 130,719 trees across 12.39 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Yangsan today: AQI 56, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 01:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · 청룡동, 9.2 km away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
12.0
PM10
—
NO₂
40.3
O₃
18.9
SO₂
7.3
CO
423.9
Data: OpenAQ · Korea Air Ministry of Environment, Korea Environment Corporation · AirKorea
- 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 Yangsan's daily AQI at 55 on average, from 47 on Nov 7 to an hourly peak of 106 on Nov 11.
Where Yangsan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yangsan: Healthy tree cover
42.2% tree cover against a 30% healthy-neighborhood target, across 12.39 km² of land.
Trees in this area
130,719
Target trees
130,719
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Yangsan lost?
Since 2001, the area within 10 km of Yangsan has lost about 684 hectares of forest (about 960 football pitches): 3.5% of the forest it had in 2000. Most of it (83%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area about 4 km north of the city center.
- Forest lost since 2001
- 684 haabout 960 football pitches
- Share of its forest
- 3.5%of what there was in 2000
- Cleared for good
- 568 hadeforestation: turned into farms, mines or towns
The worst year was 2012, when about 90 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 | 3 ha | under 1 ha | 4 ha |
| 2002 | 7 ha | under 1 ha | 7 ha |
| 2003 | 7 ha | 2 ha | 9 ha |
| 2004 | 13 ha | 22 ha | 35 ha |
| 2005 | 9 ha | 3 ha | 12 ha |
| 2006 | 12 ha | under 1 ha | 12 ha |
| 2007 | 29 ha | under 1 ha | 29 ha |
| 2008 | 64 ha | under 1 ha | 65 ha |
| 2009 | 29 ha | 1 ha | 30 ha |
| 2010 | 12 ha | 6 ha | 19 ha |
| 2011 | 4 ha | 2 ha | 6 ha |
| 2012 | 83 ha | 7 ha | 90 ha |
| 2013 | 13 ha | 1 ha | 15 ha |
| 2014 | 13 ha | 14 ha | 27 ha |
| 2015 | 16 ha | 8 ha | 24 ha |
| 2016 | 52 ha | under 1 ha | 53 ha |
| 2017 | 61 ha | 10 ha | 71 ha |
| 2018 | 52 ha | under 1 ha | 53 ha |
| 2019 | 17 ha | 23 ha | 40 ha |
| 2020 | 31 ha | 1 ha | 32 ha |
| 2021 | 11 ha | 4 ha | 15 ha |
| 2022 | 11 ha | 4 ha | 15 ha |
| 2023 | 2 ha | 4 ha | 6 ha |
| 2024 | 13 ha | under 1 ha | 14 ha |
| 2025 | 3 ha | 1 ha | 5 ha |
What is causing deforestation around Yangsan?
- Towns and roadscleared for good66% · 449 ha
- Loggingcan grow back16% · 108 ha
- Farms, pasture and plantationscleared for good14% · 93 ha
Also: mining and energy, 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
- 21,000 ha
- Forest in 2020
- 20,700 ha
- Overall change
- −308 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yangsan stayed about the same size, at about 20,700 hectares: new forest grew on about 376 hectares, and about 684 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 Yangsan
What is the air quality (AQI) in Yangsan right now?
The latest reading for Yangsan shows an AQI of 56 (Moderate), measured Nov 12, 01:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 청룡동, 9.2 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Yangsan today?
At AQI 56 (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 Yangsan been like this week?
Over the last 7 days, the CAMS air-quality model put Yangsan's daily AQI at 55 on average, from 47 on Nov 7 to an hourly peak of 106 on Nov 11. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Yangsan lost since 2001?
Since 2001, the area within 10 km of Yangsan has lost about 684 hectares of forest (about 960 football pitches): 3.5% of the forest it had in 2000. Most of it (83%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Yangsan stayed about the same size, at about 20,700 hectares: new forest grew on about 376 hectares, and about 684 hectares were lost.
What is the tree count in Yangsan?
Yangsan has an estimated 130,719 trees across the 12.39 km² of land measured — 42.2% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Yangsan need?
Yangsan has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Yangsan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jungbu-dong, 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 Jungbu-dong; the tree count is an estimate derived from that cover.
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