Worst air pollution Wŏnju, today and tomorrow
Today (16 July): Air quality in Wŏnju is poor. AQI and O3 are poor; PM2.5, NO2, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 72.1/100).
Tomorrow (17 July 2026): Air quality in Wŏnju is very poor. AQI worsens to very poor; O3 increases to very poor; HCHO increases to fair; PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 92.0/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Wŏnju's air quality reflects the Gangwon-do Wonju River valley's partial enclosure between the Taebaek and Sobaek mountain ranges, with vehicle traffic on surrounding roads and the medical device manufacturing, government, and cultural heritage corridor contributing local sources. The mountain valley's topographic enclosure creates concentration under calm inversions, while seasonal Chinese dust transport elevates PM10 and the regional Gangwon industrial background maintains moderate to elevated South Korean mountain valley provincial city readings throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
72.1/100
PM2.5 (fine particles):
Fair
32.3/100
PM10 (coarse particles):
Good
11.9/100
NO2 (nitrogen dioxide):
Fair
32.0/100
O3 (ozone):
Poor
72.1/100
SO2 (sulfur dioxide):
Good
5.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.3/100
PM1 (ultrafine particles):
Fair
35.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Very poor
92.0/100
PM2.5 (fine particles):
Fair
38.7/100
PM10 (coarse particles):
Good
13.5/100
NO2 (nitrogen dioxide):
Fair
32.3/100
O3 (ozone):
Very poor
92.0/100
SO2 (sulfur dioxide):
Good
7.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
21.0/100
PM1 (ultrafine particles):
Medium
41.0/100
Frequently Asked Questions
Is air quality bad in Wŏnju right now?
On 16 July 2026, overall air quality in Wŏnju is poor. AQI is the main air quality indicator at 72.1/100. Pollution peaks around 2:00 PM (O3: 72.1/100).
Will air quality be worse tomorrow in Wŏnju?
On 17 July 2026, air quality conditions in Wŏnju will be worse than today, with AQI forecast at very poor at 92.0/100. Pollution peaks around 1:00 PM (O3: 92.0/100).
When is air pollution at its worst in Wŏnju?
In Wŏnju, road traffic, manufacturing activity, as well as harbour and shipping traffic are the main local sources, with conditions worsening when the surrounding valley traps air close to the ground. Topographic enclosure in the valley lets pollution accumulate rather than clear out. These wind events can carry dust in from the surrounding arid landscape.
Are air quality levels in Wŏnju based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app