City report · Gyeongsangbuk-do, South Korea
Gyeongsan-si Air quality today
Air quality in Gyeongsan-si currently reads AQI 73 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 73
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 21.0
- tree cover
- 18.6%
- trees in this area
- 57.7K
- more trees needed
- 35.4K
Measured across a 2 km radius around Jungang-dong, Gyeongsan-si, Gyeongsangbuk-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.
Gyeongsan-si · AQI 73 (Moderate)
Gyeongsan-si's tree count comes to 57,732 trees across 12.42 km² of land, 11 points below the 30% tree-cover level considered healthy for this area, so roughly 35,384 more trees would close the gap.
Air quality detail
Air quality in Gyeongsan-si today: AQI 73, 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 · 중방동, 500 m away · median of 8 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
21.0
PM10
28.0
NO₂
43.1
O₃
4.9
SO₂
5.5
CO
664.5
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 Gyeongsan-si's daily AQI at 61 on average, from 47 on Nov 6 to an hourly peak of 110 on Nov 5.
Where Gyeongsan-si stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gyeongsan-si: Below target
18.6% tree cover against a 30% healthy-neighborhood target, across 12.42 km² of land.
Trees in this area
57,732
Target trees
93,116
More trees needed
35,384
CO₂ if planted / yr
778.4 t
Deforestation · 2001–2025
How much forest has Gyeongsan-si lost?
Since 2001, the area within 10 km of Gyeongsan-si has lost about 237 hectares of forest (about 330 football pitches): 1.9% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from June 2017 of a 5 × 5 km area about 7 km southeast of the city center.
- Forest lost since 2001
- 237 haabout 330 football pitches
- Share of its forest
- 1.9%of what there was in 2000
- Cleared for good
- 174 hadeforestation: turned into farms, mines or towns
The worst year was 2006, when about 35 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 | 5 ha | under 1 ha | 6 ha |
| 2002 | 10 ha | 1 ha | 11 ha |
| 2003 | 2 ha | under 1 ha | 3 ha |
| 2004 | 13 ha | 1 ha | 14 ha |
| 2005 | 10 ha | 1 ha | 11 ha |
| 2006 | 34 ha | 2 ha | 35 ha |
| 2007 | 33 ha | under 1 ha | 33 ha |
| 2008 | 17 ha | 1 ha | 18 ha |
| 2009 | 8 ha | 3 ha | 11 ha |
| 2010 | 4 ha | under 1 ha | 5 ha |
| 2011 | 3 ha | under 1 ha | 3 ha |
| 2012 | 4 ha | 1 ha | 5 ha |
| 2013 | 6 ha | under 1 ha | 6 ha |
| 2014 | under 1 ha | 4 ha | 4 ha |
| 2015 | 3 ha | 2 ha | 5 ha |
| 2016 | 4 ha | 8 ha | 12 ha |
| 2017 | 3 ha | under 1 ha | 3 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | 4 ha | 4 ha |
| 2020 | 1 ha | 5 ha | 6 ha |
| 2021 | 2 ha | 4 ha | 6 ha |
| 2022 | 2 ha | 16 ha | 18 ha |
| 2023 | 1 ha | 7 ha | 8 ha |
| 2024 | 4 ha | under 1 ha | 4 ha |
| 2025 | 5 ha | 1 ha | 6 ha |
What is causing deforestation around Gyeongsan-si?
- Towns and roadscleared for good59% · 139 ha
- Loggingcan grow back22% · 51 ha
- Farms, pasture and plantationscleared for good15% · 35 ha
Also: 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
- 14,000 ha
- Forest in 2020
- 14,000 ha
- Overall change
- +44 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gyeongsan-si stayed about the same size, at about 14,000 hectares: new forest grew on about 258 hectares, and about 214 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 Gyeongsan-si
What is the air quality (AQI) in Gyeongsan-si right now?
The latest reading for Gyeongsan-si shows an AQI of 73 (Moderate), measured Nov 12, 01:00 local time by 8 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 중방동, 500 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Gyeongsan-si today?
At AQI 73 (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 Gyeongsan-si been like this week?
Over the last 7 days, the CAMS air-quality model put Gyeongsan-si's daily AQI at 61 on average, from 47 on Nov 6 to an hourly peak of 110 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 Gyeongsan-si lost since 2001?
Since 2001, the area within 10 km of Gyeongsan-si has lost about 237 hectares of forest (about 330 football pitches): 1.9% of the forest it had in 2000. Most of it (73%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Gyeongsan-si stayed about the same size, at about 14,000 hectares: new forest grew on about 258 hectares, and about 214 hectares were lost.
What is the tree count in Gyeongsan-si?
Gyeongsan-si has an estimated 57,732 trees across the 12.42 km² of land measured — 18.6% tree cover, 11 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Gyeongsan-si need?
Gyeongsan-si needs roughly 35,384 more trees to close a 11-point shortfall against its 30% tree-cover target — about 778.4 t of extra CO₂ absorbed per year once grown.
How are Gyeongsan-si's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Jungang-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 Jungang-dong; the tree count is an estimate derived from that cover.
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