Worst air pollution Jeju, today and tomorrow
Today (16 July): Air quality in Jeju is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 PM (NO2: 41.1/100).
Tomorrow (17 July 2026): Air quality in Jeju is poor. AQI worsens to poor; PM2.5 increases to fair; O3 increases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 66.5/100). 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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Jeju's air quality benefits from its exceptional sub-tropical Pacific Ocean and East China Sea island position, with consistent northeast and southwest maritime trade winds providing outstanding maritime ventilation around this famous Korean resort island. Vehicle traffic on surrounding roads and the Hallasan National Park tourism and agricultural corridor contribute modest local sources, while the extraordinary island coastal exposure generally maintains Jeju among Korea's cleanest inhabited island environments throughout most of the year.
Today - 16 July | Pollution peaks at 20:00
AQI:
Medium
41.1/100
PM2.5 (fine particles):
Good
19.7/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Medium
41.1/100
O3 (ozone):
Fair
34.1/100
SO2 (sulfur dioxide):
Good
10.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
15.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Poor
66.5/100
PM2.5 (fine particles):
Fair
30.1/100
PM10 (coarse particles):
Good
10.4/100
NO2 (nitrogen dioxide):
Medium
40.8/100
O3 (ozone):
Poor
66.5/100
SO2 (sulfur dioxide):
Good
11.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Fair
29.8/100
Frequently Asked Questions
Is air quality bad in Jeju right now?
On 16 July 2026, overall air quality in Jeju is fair. O3 is the main pollutant at 34.1/100. Pollution peaks around 8:00 PM (NO2: 41.1/100).
Will air quality be worse tomorrow in Jeju?
On 17 July 2026, air quality conditions in Jeju will be worse than today, with AQI forecast at poor at 66.5/100. Pollution peaks around 3:00 PM (O3: 66.5/100).
When is air pollution at its worst in Jeju?
Air quality in Jeju tends to be worse when vehicle traffic, crop farming, as well as seasonal tourism traffic build up and onshore breezes fall calm. Onshore breezes usually help clear the air, but pollution can build up when winds are light. This natural ventilation is one reason coastal areas often see better readings than inland cities.
Are air quality levels in Jeju 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