City report · Gyeonggi-do, South Korea
Yeoju Air quality today
Air quality in Yeoju currently reads AQI 92 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 92
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 31.0
- tree cover
- 28.3%
- trees in this area
- 79.5K
- more trees needed
- 4.8K
Measured across a 2 km radius around Yeoheung-ro, Yeoju-si, Gyeonggi-do, South Korea (12.57 km²), from a satellite image of Sep 23, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Yeoju · AQI 92 (Moderate)
Yeoju's tree count comes to 79,483 trees across 11.24 km² of land, 2 points below the 30% tree-cover level considered healthy for this area, so roughly 4,775 more trees would close the gap.
Air quality detail
Air quality in Yeoju today: AQI 92, 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 · 대신면, 9.5 km away · median of 2 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
31.0
PM10
37.0
NO₂
39.1
O₃
10.3
SO₂
6.3
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 Yeoju's daily AQI at 68 on average, from 53 on Nov 6 to an hourly peak of 134 on Nov 4.
Where Yeoju stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Yeoju: Below target
28.3% tree cover against a 30% healthy-neighborhood target, across 11.24 km² of land.
Trees in this area
79,483
Target trees
84,258
More trees needed
4,775
CO₂ if planted / yr
105.0 t
Deforestation · 2001–2025
How much forest has Yeoju lost?
Since 2001, the area within 10 km of Yeoju has lost about 1,170 hectares of forest (about 1,600 football pitches): 16% of the forest it had in 2000. Most of it (64%) 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 northeast of the city center.
- Forest lost since 2001
- 1,170 haabout 1,600 football pitches
- Share of its forest
- 16%of what there was in 2000
- Cleared for good
- 751 hadeforestation: turned into farms, mines or towns
The worst year was 2008, when about 144 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 | 16 ha | 6 ha | 23 ha |
| 2002 | 4 ha | 7 ha | 11 ha |
| 2003 | 6 ha | 3 ha | 9 ha |
| 2004 | 59 ha | 9 ha | 68 ha |
| 2005 | 32 ha | 20 ha | 52 ha |
| 2006 | 42 ha | 10 ha | 52 ha |
| 2007 | 29 ha | 27 ha | 55 ha |
| 2008 | 116 ha | 28 ha | 144 ha |
| 2009 | 63 ha | 34 ha | 97 ha |
| 2010 | 27 ha | 20 ha | 47 ha |
| 2011 | 36 ha | 17 ha | 53 ha |
| 2012 | 48 ha | 10 ha | 58 ha |
| 2013 | 8 ha | 5 ha | 12 ha |
| 2014 | 21 ha | 7 ha | 28 ha |
| 2015 | 35 ha | 11 ha | 46 ha |
| 2016 | 31 ha | 8 ha | 38 ha |
| 2017 | 33 ha | 13 ha | 46 ha |
| 2018 | 21 ha | 23 ha | 44 ha |
| 2019 | 24 ha | 56 ha | 79 ha |
| 2020 | 7 ha | 11 ha | 18 ha |
| 2021 | 16 ha | 17 ha | 33 ha |
| 2022 | 12 ha | 9 ha | 21 ha |
| 2023 | 24 ha | 11 ha | 35 ha |
| 2024 | 21 ha | 5 ha | 26 ha |
| 2025 | 21 ha | 51 ha | 72 ha |
What is causing deforestation around Yeoju?
- Towns and roadscleared for good58% · 673 ha
- Loggingcan grow back35% · 411 ha
- Farms, pasture and plantationscleared for good6.6% · 77 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
- 9,230 ha
- Forest in 2020
- 8,620 ha
- Overall change
- −609 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Yeoju shrank from about 9,230 hectares to 8,620 hectares, a net loss of about 609 hectares (−6.6%). New forest grew on about 305 hectares, but 915 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 Yeoju
Same 2 km radius, same index — so they compare directly.
- Icheon-si17.0 km
South Korea
- Tree cover
- 36%
- Air quality
- 112
- Wŏnju28.2 km
South Korea
- Tree cover
- 21%
- Air quality
- 82
- Chungju44.1 km
South Korea
- Tree cover
- 6%
- Air quality
- 92
- Hanam46.6 km
South Korea
- Tree cover
- 30%
- Air quality
- 88
- Seongnam-si46.6 km
South Korea
- Tree cover
- 32%
- Air quality
- 85
- Hwado49.0 km
South Korea
- Tree cover
- 53%
- Air quality
- 84
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Frequently asked
Questions about Yeoju
What is the air quality (AQI) in Yeoju right now?
The latest reading for Yeoju shows an AQI of 92 (Moderate), measured Nov 12, 01:00 local time by 2 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 대신면, 9.5 km away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Yeoju today?
At AQI 92 (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 Yeoju been like this week?
Over the last 7 days, the CAMS air-quality model put Yeoju's daily AQI at 68 on average, from 53 on Nov 6 to an hourly peak of 134 on Nov 4. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Yeoju lost since 2001?
Since 2001, the area within 10 km of Yeoju has lost about 1,170 hectares of forest (about 1,600 football pitches): 16% of the forest it had in 2000. Most of it (64%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Yeoju shrank from about 9,230 hectares to 8,620 hectares, a net loss of about 609 hectares (−6.6%). New forest grew on about 305 hectares, but 915 hectares were lost.
What is the tree count in Yeoju?
Yeoju has an estimated 79,483 trees across the 11.24 km² of land measured — 28.3% tree cover, 2 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Yeoju need?
Yeoju needs roughly 4,775 more trees to close a 2-point shortfall against its 30% tree-cover target — about 105.0 t of extra CO₂ absorbed per year once grown.
How are Yeoju's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Yeoheung-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 Yeoheung-ro; the tree count is an estimate derived from that cover.
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