City report · Gyeongsangnam-do, South Korea
Geoje Air quality today
Air quality in Geoje currently reads AQI 66 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 66
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 17.0
- tree cover
- 79.4%
- trees in this area
- 179K
- more trees needed
- 0
Measured across a 2 km radius around Wahyeon 1-gil, Irun-myeon, Geoje-si, Gyeongsangnam-do, South Korea (12.57 km²), from a satellite image of Sep 20, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Geoje · AQI 66 (Moderate)
Geoje's tree count comes to 178,601 trees across 9 km² of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Geoje today: AQI 66, 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 · 아주동, 5.7 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
17.0
PM10
22.5
NO₂
13.6
O₃
59.0
SO₂
6.9
CO
509.8
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 Geoje's daily AQI at 39 on average, from 25 on Nov 10 to an hourly peak of 75 on Nov 6.
Where Geoje stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Geoje: Healthy tree cover
79.4% tree cover against a 30% healthy-neighborhood target, across 9 km² of land.
Trees in this area
178,601
Target trees
178,601
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Geoje lost?
Since 2001, the area within 10 km of Geoje has lost about 459 hectares of forest (about 640 football pitches): 4.5% of the forest it had in 2000. Most of it (51%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from July 2017 of a 5 × 5 km area about 7 km north of the city center.
- Forest lost since 2001
- 459 haabout 640 football pitches
- Share of its forest
- 4.5%of what there was in 2000
- Cleared for good
- 232 hadeforestation: turned into farms, mines or towns
The worst year was 2017, when about 57 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 | 2 ha | 2 ha | 4 ha |
| 2002 | 3 ha | under 1 ha | 3 ha |
| 2003 | 2 ha | under 1 ha | 2 ha |
| 2004 | 7 ha | under 1 ha | 8 ha |
| 2005 | 4 ha | 3 ha | 7 ha |
| 2006 | 9 ha | 1 ha | 10 ha |
| 2007 | 7 ha | under 1 ha | 7 ha |
| 2008 | 4 ha | 2 ha | 5 ha |
| 2009 | 10 ha | 4 ha | 13 ha |
| 2010 | 17 ha | 2 ha | 19 ha |
| 2011 | 12 ha | 32 ha | 45 ha |
| 2012 | 15 ha | 11 ha | 26 ha |
| 2013 | 15 ha | 5 ha | 19 ha |
| 2014 | 13 ha | 2 ha | 14 ha |
| 2015 | 34 ha | 2 ha | 36 ha |
| 2016 | 14 ha | 5 ha | 19 ha |
| 2017 | 12 ha | 45 ha | 57 ha |
| 2018 | 14 ha | 35 ha | 49 ha |
| 2019 | 19 ha | 1 ha | 20 ha |
| 2020 | 3 ha | 2 ha | 5 ha |
| 2021 | under 1 ha | 21 ha | 21 ha |
| 2022 | 2 ha | 5 ha | 7 ha |
| 2023 | 3 ha | 23 ha | 26 ha |
| 2024 | 13 ha | 12 ha | 25 ha |
| 2025 | under 1 ha | 12 ha | 13 ha |
What is causing deforestation around Geoje?
- Loggingcan grow back47% · 218 ha
- Towns and roadscleared for good47% · 214 ha
- Mining and energycleared for good3.9% · 18 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
- 10,600 ha
- Forest in 2020
- 10,400 ha
- Overall change
- −230 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Geoje shrank from about 10,600 hectares to 10,400 hectares, a net loss of about 230 hectares (−2.2%). New forest grew on about 56 hectares, but 287 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 Geoje
Same 2 km radius, same index — so they compare directly.
- Busan43.6 km
South Korea
- Tree cover
- 20%
- Air quality
- 72
- Changwon46.1 km
South Korea
- Tree cover
- 32%
- Air quality
- 67
- Kimhae49.4 km
South Korea
- Tree cover
- 28%
- Air quality
- 68
- Yangsan65.9 km
South Korea
- Tree cover
- 42%
- Air quality
- 64
- Gijang66.6 km
South Korea
- Tree cover
- 62%
- Air quality
- 65
- Chinju70.5 km
South Korea
- Tree cover
- 42%
- Air quality
- 62
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Frequently asked
Questions about Geoje
What is the air quality (AQI) in Geoje right now?
The latest reading for Geoje shows an AQI of 66 (Moderate), measured Nov 12, 01:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 아주동, 5.7 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Geoje today?
At AQI 66 (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 Geoje been like this week?
Over the last 7 days, the CAMS air-quality model put Geoje's daily AQI at 39 on average, from 25 on Nov 10 to an hourly peak of 75 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Geoje lost since 2001?
Since 2001, the area within 10 km of Geoje has lost about 459 hectares of forest (about 640 football pitches): 4.5% of the forest it had in 2000. Most of it (51%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Geoje shrank from about 10,600 hectares to 10,400 hectares, a net loss of about 230 hectares (−2.2%). New forest grew on about 56 hectares, but 287 hectares were lost.
What is the tree count in Geoje?
Geoje has an estimated 178,601 trees across the 9 km² of land measured — 79.4% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Geoje need?
Geoje has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Geoje's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Wahyeon 1-gil, 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 Wahyeon 1-gil; the tree count is an estimate derived from that cover.
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