Highest air pollution Seoul, today and tomorrow
Today (29 June): Air quality in Seoul is poor. AQI and O3 are poor; PM2.5 and PM1 are fair; NO2 is medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 62.4/100).
Tomorrow (30 June 2026): Air quality in Seoul is poor. SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 71.0/100). 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
Seoul's air quality reflects the Han River basin's partial topographic enclosure between the Bukhan and Gwanak mountain ranges, with vehicle traffic on the Olympic Expressway and extraordinary metropolitan vehicle and industrial density generating sustained NO₂ and PM2.5. Seasonal Chinese and Mongolian dust transport significantly elevates PM10 during spring yellow dust events, while winter coal and industrial emissions from the broader Northeast Asian regional airshed maintain Seoul among Asia's more challenging major metropolitan air quality environments throughout the year.
Today - 29 June | Pollution peaks at 14:00
AQI:
Poor
62.4/100
PM2.5 (fine particles):
Fair
24.8/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Medium
41.3/100
O3 (ozone):
Poor
62.4/100
SO2 (sulfur dioxide):
Good
15.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Fair
29.7/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 16:00
AQI:
Poor
71.0/100
PM2.5 (fine particles):
Fair
29.1/100
PM10 (coarse particles):
Good
8.2/100
NO2 (nitrogen dioxide):
Medium
43.4/100
O3 (ozone):
Poor
71.0/100
SO2 (sulfur dioxide):
Fair
24.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Fair
35.0/100
Pollen forecast in Seoul
View pollen forecastFrequently Asked Questions
Is air quality bad in Seoul right now?
On 29 June 2026, overall air quality in Seoul is poor. AQI is the main air quality indicator at 62.4/100. Pollution peaks around 2:00 PM (O3: 62.4/100).
Will air quality be worse tomorrow in Seoul?
On 30 June 2026, air quality conditions in Seoul will be similar to today, with AQI forecast at poor at 71.0/100. Pollution peaks around 4:00 PM (O3: 71.0/100).
Are air quality levels in Seoul 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: 28 June 2026 at 18:37 CET (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
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team