Worst air pollution Yeosu, today and tomorrow
Today (16 July): Air quality in Yeosu is poor. AQI and O3 are poor; NO2 is medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 66.4/100).
Tomorrow (17 July 2026): Air quality in Yeosu is poor. SO2 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 61.7/100). 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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Yeosu's air quality faces significant industrial challenges from the South Korean southeastern South Sea coastal position, with the Yeosu National Industrial Complex's petrochemical and refinery operations — one of South Korea's largest industrial complexes — generating elevated industrial SO₂ and PM2.5 alongside vehicle traffic on surrounding roads. South Sea maritime breezes provide coastal ventilation, while the extraordinary industrial complex's scale makes Yeosu South Korea's most distinctively petrochemical-defined coastal urban air quality environment throughout the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
66.4/100
PM2.5 (fine particles):
Good
16.4/100
PM10 (coarse particles):
Good
10.5/100
NO2 (nitrogen dioxide):
Medium
51.9/100
O3 (ozone):
Poor
66.4/100
SO2 (sulfur dioxide):
Good
12.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.9/100
PM1 (ultrafine particles):
Good
13.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Poor
61.7/100
PM2.5 (fine particles):
Good
19.4/100
PM10 (coarse particles):
Good
6.1/100
NO2 (nitrogen dioxide):
Medium
53.3/100
O3 (ozone):
Poor
61.7/100
SO2 (sulfur dioxide):
Fair
22.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.2/100
PM1 (ultrafine particles):
Fair
21.8/100
Frequently Asked Questions
Is air quality bad in Yeosu right now?
On 16 July 2026, overall air quality in Yeosu is poor. AQI is the main air quality indicator at 66.4/100. Pollution peaks around 2:00 PM (O3: 66.4/100).
Will air quality be worse tomorrow in Yeosu?
On 17 July 2026, air quality conditions in Yeosu will be similar to today, with AQI forecast at poor at 61.7/100. Pollution peaks around 3:00 PM (O3: 61.7/100).
When is air pollution at its worst in Yeosu?
The biggest local contributors to pollution in Yeosu are vehicle traffic together with steel, cement, and chemical production, particularly once dry spells bring strong winds. These wind events can carry dust in from the surrounding arid landscape. Maritime airflow normally ventilates the area well, though calmer spells let levels rise.
Are air quality levels in Yeosu 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