City report · North Korea
Wŏnsan Air quality today
Air quality in Wŏnsan currently reads AQI 61 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
AQI 61
Air quality right now
Moderate
- PM2.5, fine particles (µg/m³)
- 13.8
- tree cover
- 29.7%
- trees in this area
- 75.9K
- more trees needed
- 766
Measured across a 2 km radius around Wonsan, Kangwon, North Korea (12.57 km²), from a satellite image of Jul 30, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Wŏnsan · AQI 61 (Moderate)
Wŏnsan's tree count comes to 75,857 trees across 10.22 km² of land, 0 points below the 30% tree-cover level considered healthy for this area, so roughly 766 more trees would close the gap.
Air quality detail
Air quality in Wŏnsan today: AQI 61, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 01:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 165 km, US EPA index. Values in µg/m³.
Estimate · model corrected with 3 station cities within 165 km, e.g. Chuncheon-si and Yangju-si
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
13.8
PM10
25.4
NO₂
6.0
O₃
33.0
SO₂
4.8
CO
260.0
- 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 Wŏnsan's daily AQI at 45 on average, from 21 on Nov 8 to an hourly peak of 88 on Nov 5.
Where Wŏnsan stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Wŏnsan: Below target
29.7% tree cover against a 30% healthy-neighborhood target, across 10.22 km² of land.
Trees in this area
75,857
Target trees
76,623
More trees needed
766
CO₂ if planted / yr
16.9 t
Deforestation · 2001–2025
How much forest has Wŏnsan lost?
Since 2001, the area within 10 km of Wŏnsan has lost about 11 hectares of forest (about 15 football pitches): under 1% of the forest it had in 2000. The biggest cause was towns and roads (27%). About 4 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns.
2017: satellite photo from August 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 11 haabout 15 football pitches
- Share of its forest
- under 1%of what there was in 2000
- Cleared for good
- 4 hadeforestation: turned into farms, mines or towns
The worst year was 2014, when about 2 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 | under 1 ha | under 1 ha |
| 2002 | under 1 ha | under 1 ha | under 1 ha |
| 2003 | under 1 ha | under 1 ha | under 1 ha |
| 2004 | under 1 ha | under 1 ha | under 1 ha |
| 2005 | under 1 ha | under 1 ha | under 1 ha |
| 2006 | under 1 ha | under 1 ha | under 1 ha |
| 2007 | under 1 ha | under 1 ha | under 1 ha |
| 2008 | under 1 ha | under 1 ha | under 1 ha |
| 2009 | under 1 ha | under 1 ha | under 1 ha |
| 2010 | under 1 ha | under 1 ha | 1 ha |
| 2011 | under 1 ha | under 1 ha | under 1 ha |
| 2012 | under 1 ha | 1 ha | 1 ha |
| 2013 | under 1 ha | under 1 ha | under 1 ha |
| 2014 | 1 ha | under 1 ha | 2 ha |
| 2015 | under 1 ha | under 1 ha | under 1 ha |
| 2016 | under 1 ha | under 1 ha | under 1 ha |
| 2017 | under 1 ha | under 1 ha | under 1 ha |
| 2018 | under 1 ha | under 1 ha | under 1 ha |
| 2019 | under 1 ha | under 1 ha | under 1 ha |
| 2020 | under 1 ha | under 1 ha | under 1 ha |
| 2021 | under 1 ha | under 1 ha | under 1 ha |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | under 1 ha | under 1 ha | under 1 ha |
| 2025 | under 1 ha | 2 ha | 2 ha |
What is causing deforestation around Wŏnsan?
- Towns and roadscleared for good27% · 3 ha
- Loggingcan grow back10% · 1 ha
- Farms, pasture and plantationscleared for good9.4% · 1 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
- 2,260 ha
- Forest in 2020
- 3,210 ha
- Overall change
- +943 hamore forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Wŏnsan grew from about 2,260 hectares to 3,210 hectares, a net gain of about 943 hectares (+42%). New forest grew on about 975 hectares, while 32 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 Wŏnsan
Same 2 km radius, same index — so they compare directly.
- Hamhŭng85.5 km
North Korea
- Tree cover
- 13%
- Air quality
- 58
- Sinp’o117.7 km
North Korea
- Tree cover
- 31%
- Air quality
- 55
- Tŏkch’ŏn121.7 km
North Korea
- Tree cover
- 12%
- Air quality
- 111
- Sunch’ŏn133.7 km
North Korea
- Tree cover
- 19%
- Air quality
- 99
- P’yŏngsŏng135.8 km
North Korea
- Tree cover
- 31%
- Air quality
- 78
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Frequently asked
Questions about Wŏnsan
What is the air quality (AQI) in Wŏnsan right now?
The latest reading for Wŏnsan shows an AQI of 61 (Moderate), observed Nov 11, 01:00 local time via Open-Meteo / CAMS, corrected with 3 ground-station cities within 165 km, US EPA index. The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in Wŏnsan today?
At AQI 61 (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 Wŏnsan been like this week?
Over the last 7 days, the CAMS air-quality model put Wŏnsan's daily AQI at 45 on average, from 21 on Nov 8 to an hourly peak of 88 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 Wŏnsan lost since 2001?
Since 2001, the area within 10 km of Wŏnsan has lost about 11 hectares of forest (about 15 football pitches): under 1% of the forest it had in 2000. The biggest cause was towns and roads (27%). About 4 hectares (37%) was deforestation: forest cleared for good for farms, mines or towns. Comparing satellite maps from 2000 and 2020, the forest around Wŏnsan grew from about 2,260 hectares to 3,210 hectares, a net gain of about 943 hectares (+42%). New forest grew on about 975 hectares, while 32 hectares were lost.
What is the tree count in Wŏnsan?
Wŏnsan has an estimated 75,857 trees across the 10.22 km² of land measured — 29.7% tree cover, 0 percentage points short of the 30% tree-cover target set for this area.
How many more trees does Wŏnsan need?
Wŏnsan needs roughly 766 more trees to close a 0-point shortfall against its 30% tree-cover target — about 16.9 t of extra CO₂ absorbed per year once grown.
How are Wŏnsan's air quality and tree cover measured?
Air quality comes from ground monitoring stations via OpenAQ where one reports nearby, and otherwise, as here, from the Open-Meteo / CAMS model, which may differ from street-level monitors. 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 Wonsan; the tree count is an estimate derived from that cover.
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