City report · Jeollabuk-do, South Korea
Gunsan Air quality today
Air quality in Gunsan currently reads AQI 90 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 90
Moderate
- PM2.5, fine particles (µg/m³)
- 30.0
- tree cover
- 18.7%
- trees in this area
- 51.2K
- more trees needed
- 31.0K
Measured across a 2 km radius around Miwon-ro, Gunsan-si, Jeonbuk State, South Korea (12.57 km²), from a satellite image of Sep 18, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Gunsan · AQI 90 (Moderate)
Gunsan's tree count comes to 51,228 trees across 10.96 km² of land, 11 points below the 30% tree-cover level considered healthy for this area, so roughly 30,956 more trees would close the gap.
Air quality detail
Air quality in Gunsan today: AQI 90, Moderate
Main pollutant: PM2.5 · Observed Nov 12, 00:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · 신풍동(군산), 1.2 km away · median of 6 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
30.0
PM10
43.5
NO₂
37.6
O₃
32.2
SO₂
6.8
CO
584.3
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 Gunsan's daily AQI at 61 on average, from 44 on Nov 6 to an hourly peak of 92 on Nov 11.
Where Gunsan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Gunsan: Below target
18.7% tree cover against a 30% healthy-neighborhood target, across 10.96 km² of land.
Trees in this area
51,228
Target trees
82,184
More trees needed
30,956
CO₂ if planted / yr
681.0 t
Deforestation · 2001–2025
How much forest has Gunsan lost?
Since 2001, the area within 10 km of Gunsan has lost about 233 hectares of forest (about 330 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 83 hectares (36%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km south of the city center.
- Forest lost since 2001
- 233 haabout 330 football pitches
- Share of its forest
- 15%of what there was in 2000
- Cleared for good
- 83 hadeforestation: turned into farms, mines or towns
The worst year was 2025, when about 59 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 | 3 ha | 3 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | 6 ha | 1 ha | 7 ha |
| 2004 | 5 ha | 3 ha | 8 ha |
| 2005 | under 1 ha | 2 ha | 2 ha |
| 2006 | 2 ha | 2 ha | 4 ha |
| 2007 | 1 ha | under 1 ha | 2 ha |
| 2008 | under 1 ha | 1 ha | 2 ha |
| 2009 | under 1 ha | 2 ha | 2 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | 1 ha | under 1 ha | 2 ha |
| 2012 | 2 ha | under 1 ha | 3 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | 6 ha | 1 ha | 8 ha |
| 2016 | 5 ha | 50 ha | 55 ha |
| 2017 | 8 ha | 27 ha | 35 ha |
| 2018 | under 1 ha | 1 ha | 1 ha |
| 2019 | 3 ha | 4 ha | 7 ha |
| 2020 | 1 ha | 2 ha | 3 ha |
| 2021 | under 1 ha | 4 ha | 5 ha |
| 2022 | under 1 ha | 2 ha | 2 ha |
| 2023 | 5 ha | 15 ha | 20 ha |
| 2024 | under 1 ha | 3 ha | 3 ha |
| 2025 | 33 ha | 26 ha | 59 ha |
What is causing deforestation around Gunsan?
- Loggingcan grow back53% · 124 ha
- Towns and roadscleared for good36% · 83 ha
- Unknown causescause unknown11% · 26 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
- 3,590 ha
- Forest in 2020
- 3,490 ha
- Overall change
- −101 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Gunsan shrank from about 3,590 hectares to 3,490 hectares, a net loss of about 101 hectares (−2.8%). New forest grew on about 104 hectares, but 206 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
Measured cities near Gunsan
Same 2 km radius, same index — so they compare directly.
- Iksan22.2 km
South Korea
- Tree cover
- 7%
- Air quality
- 80
- Jeonju43.1 km
South Korea
- Tree cover
- 23%
- Air quality
- 79
- Jeongeup46.0 km
South Korea
- Tree cover
- 35%
- Air quality
- 72
- Daejeon73.2 km
South Korea
- Tree cover
- 14%
- Air quality
- 75
- Sejong85.8 km
South Korea
- Tree cover
- 17%
- Air quality
- 117
- Gwangju93.5 km
South Korea
- Tree cover
- 7%
- Air quality
- 69
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Frequently asked
Questions about Gunsan
What is the air quality (AQI) in Gunsan right now?
The latest reading for Gunsan shows an AQI of 90 (Moderate), measured Nov 12, 00:00 local time by 6 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 신풍동(군산), 1.2 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Gunsan today?
At AQI 90 (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 Gunsan been like this week?
Over the last 7 days, the CAMS air-quality model put Gunsan's daily AQI at 61 on average, from 44 on Nov 6 to an hourly peak of 92 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 Gunsan lost since 2001?
Since 2001, the area within 10 km of Gunsan has lost about 233 hectares of forest (about 330 football pitches): 15% of the forest it had in 2000. Most of it was lost to logging, so much of it can grow back. About 83 hectares (36%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Gunsan shrank from about 3,590 hectares to 3,490 hectares, a net loss of about 101 hectares (−2.8%). New forest grew on about 104 hectares, but 206 hectares were lost.
What is the tree count in Gunsan?
Gunsan has an estimated 51,228 trees across the 10.96 km² of land measured — 18.7% tree cover, 11 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Gunsan need?
Gunsan needs roughly 30,956 more trees to close a 11-point shortfall against its 30% tree-cover target — about 681.0 t of extra CO₂ absorbed per year once grown.
How are Gunsan's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Miwon-ro, 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 Miwon-ro; the tree count is an estimate derived from that cover.
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