City report · Gyeonggi-do, South Korea
Suwon Air quality today
Air quality in Suwon currently reads AQI 88 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 88
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 29.0
- tree cover
- 19.6%
- trees in this area
- 61.3K
- more trees needed
- 32.5K
Measured across a 2 km radius around Suseong-ro 328beon-gil, Jangan-gu, Suwon-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.
Suwon · AQI 88 (Moderate)
Suwon's tree count comes to 61,329 trees across 12.52 km² of land, 10 points below the 30% tree-cover level considered healthy for this area, so roughly 32,542 more trees would close the gap.
Air quality detail
Air quality in Suwon today: AQI 88, 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 · 신풍동, 800 m away · median of 15 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
29.0
PM10
48.0
NO₂
71.9
O₃
4.3
SO₂
4.7
CO
653.0
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 Suwon's daily AQI at 75 on average, from 56 on Nov 6 to an hourly peak of 132 on Nov 11.
Where Suwon stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Suwon: Below target
19.6% tree cover against a 30% healthy-neighborhood target, across 12.52 km² of land.
Trees in this area
61,329
Target trees
93,871
More trees needed
32,542
CO₂ if planted / yr
715.9 t
Deforestation · 2001–2025
How much forest has Suwon lost?
Since 2001, the area within 10 km of Suwon has lost about 503 hectares of forest (about 700 football pitches): 7.2% of the forest it had in 2000. Most of it (87%) 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
- 503 haabout 700 football pitches
- Share of its forest
- 7.2%of what there was in 2000
- Cleared for good
- 437 hadeforestation: turned into farms, mines or towns
The worst year was 2009, when about 66 hectares of forest were lost.
Suwon's full deforestation reportHectares of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 28 ha | under 1 ha | 29 ha |
| 2002 | 8 ha | 4 ha | 12 ha |
| 2003 | 5 ha | 3 ha | 8 ha |
| 2004 | 21 ha | 2 ha | 23 ha |
| 2005 | 21 ha | 7 ha | 28 ha |
| 2006 | 30 ha | 4 ha | 34 ha |
| 2007 | 54 ha | 8 ha | 62 ha |
| 2008 | 39 ha | 4 ha | 43 ha |
| 2009 | 61 ha | 6 ha | 66 ha |
| 2010 | 7 ha | under 1 ha | 8 ha |
| 2011 | 22 ha | under 1 ha | 22 ha |
| 2012 | 8 ha | 1 ha | 9 ha |
| 2013 | 3 ha | under 1 ha | 4 ha |
| 2014 | 10 ha | 2 ha | 12 ha |
| 2015 | 15 ha | under 1 ha | 15 ha |
| 2016 | 23 ha | under 1 ha | 23 ha |
| 2017 | 19 ha | 4 ha | 23 ha |
| 2018 | 23 ha | under 1 ha | 23 ha |
| 2019 | 8 ha | under 1 ha | 8 ha |
| 2020 | 12 ha | 2 ha | 14 ha |
| 2021 | 5 ha | 2 ha | 7 ha |
| 2022 | 3 ha | under 1 ha | 3 ha |
| 2023 | 3 ha | 8 ha | 11 ha |
| 2024 | 2 ha | under 1 ha | 2 ha |
| 2025 | 8 ha | 7 ha | 15 ha |
What is causing deforestation around Suwon?
- Towns and roadscleared for good87% · 436 ha
- Loggingcan grow back11% · 54 ha
- Unknown causescause unknown2.3% · 12 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
- 8,940 ha
- Forest in 2020
- 8,660 ha
- Overall change
- −279 haless forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Suwon shrank from about 8,940 hectares to 8,660 hectares, a net loss of about 279 hectares (−3.1%). New forest grew on about 204 hectares, but 484 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 Suwon
Same 2 km radius, same index — so they compare directly.
- Anyang-si13.4 km
South Korea
- Tree cover
- 40%
- Air quality
- 84
- Osan16.4 km
South Korea
- Tree cover
- 20%
- Air quality
- 82
- Ansan-si16.9 km
South Korea
- Tree cover
- 30%
- Air quality
- 92
- Hwaseong-si19.4 km
South Korea
- Tree cover
- 45%
- Air quality
- 82
- Seongnam-si20.0 km
South Korea
- Tree cover
- 32%
- Air quality
- 85
- Bucheon-si30.5 km
South Korea
- Tree cover
- 27%
- Air quality
- 101
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Frequently asked
Questions about Suwon
What is the air quality (AQI) in Suwon right now?
The latest reading for Suwon shows an AQI of 88 (Moderate), measured Nov 12, 01:00 local time by 15 ground monitoring stations via OpenAQ (the median of their readings; the nearest is 신풍동, 800 m away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Suwon today?
At AQI 88 (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 Suwon been like this week?
Over the last 7 days, the CAMS air-quality model put Suwon's daily AQI at 75 on average, from 56 on Nov 6 to an hourly peak of 132 on Nov 11. On 1 of those days the average was above 100, unhealthy for sensitive groups.
How much forest has the area around Suwon lost since 2001?
Since 2001, the area within 10 km of Suwon has lost about 503 hectares of forest (about 700 football pitches): 7.2% of the forest it had in 2000. Most of it (87%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Suwon shrank from about 8,940 hectares to 8,660 hectares, a net loss of about 279 hectares (−3.1%). New forest grew on about 204 hectares, but 484 hectares were lost.
What is the tree count in Suwon?
Suwon has an estimated 61,329 trees across the 12.52 km² of land measured — 19.6% tree cover, 10 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Suwon need?
Suwon needs roughly 32,542 more trees to close a 10-point shortfall against its 30% tree-cover target — about 715.9 t of extra CO₂ absorbed per year once grown.
How are Suwon's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Suseong-ro 328beon-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 Suseong-ro 328beon-gil; the tree count is an estimate derived from that cover.
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