Worst air pollution Koja, today and tomorrow
Today (16 July): Air quality in Koja is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 22.7/100).
Tomorrow (17 July 2026): Air quality in Koja is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 21.4/100). 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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Koja in Okinawa reflects the central Okinawa Island position adjacent to the US Marine Corps Camp Hansen, with vehicle traffic on surrounding roads and the military base operations and residential character contributing elevated NOₓ. Consistent Pacific trade winds provide outstanding maritime ventilation, while the military aviation operations represent the most distinctive local emission source and the island trade wind exposure generally maintains moderate Okinawa central island readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
22.7/100
PM2.5 (fine particles):
Good
8.0/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Good
2.0/100
O3 (ozone):
Fair
22.7/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
5.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
21.4/100
PM2.5 (fine particles):
Good
6.4/100
PM10 (coarse particles):
Good
2.6/100
NO2 (nitrogen dioxide):
Good
2.5/100
O3 (ozone):
Fair
21.4/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
3.6/100
Frequently Asked Questions
Is air quality bad in Koja right now?
On 16 July 2026, overall air quality in Koja is fair. AQI is the main air quality indicator at 22.7/100. Pollution peaks around 2:00 PM (O3: 22.7/100).
Will air quality be worse tomorrow in Koja?
On 17 July 2026, air quality conditions in Koja will be similar to today, with AQI forecast at fair at 21.4/100. Pollution peaks around 1:00 PM (O3: 21.4/100).
When is air pollution at its worst in Koja?
The biggest local contributors to pollution in Koja are vehicle traffic as well as aviation activity from the nearby airport, particularly once onshore breezes fall calm. Sea breezes typically keep conditions in check, except during still weather. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Koja 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