Worst air pollution Ōita, today and tomorrow
Today (16 July): Air quality in Ōita is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 60.9/100).
Tomorrow (17 July 2026): Air quality in Ōita is fair. AQI improves to medium; O3 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 54.8/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Ōita's air quality reflects the northeastern Kyushu Ōita Bay coastal position, with consistent Pacific and Bungo Channel maritime breezes providing reliable ventilation. Vehicle traffic on surrounding roads and the Showa Denko and Nippon Steel petrochemical and steel corridor contribute local sources, while the outstanding coastal exposure and the Kunisaki Peninsula's highland backdrop create topographic variation and Oita generally maintains moderate to good conditions for a major Japanese Kyushu coastal industrial city throughout most of the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Poor
60.9/100
PM2.5 (fine particles):
Good
14.4/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
26.6/100
O3 (ozone):
Poor
60.9/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.3/100
PM1 (ultrafine particles):
Good
18.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Medium
54.8/100
PM2.5 (fine particles):
Good
14.9/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Fair
28.0/100
O3 (ozone):
Medium
54.8/100
SO2 (sulfur dioxide):
Good
7.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
17.6/100
PM1 (ultrafine particles):
Fair
20.5/100
Frequently Asked Questions
Is air quality bad in Ōita right now?
On 16 July 2026, overall air quality in Ōita is poor. AQI is the main air quality indicator at 60.9/100. Pollution peaks around 12:00 PM (O3: 60.9/100).
Will air quality be worse tomorrow in Ōita?
On 17 July 2026, air quality conditions in Ōita will be better than today, with NO2 forecast at fair at 28.0/100. Pollution peaks around 11:00 AM (O3: 54.8/100).
When is air pollution at its worst in Ōita?
In Ōita, road traffic and steel, cement, and chemical production are the main local sources, with conditions worsening when windblown dust events occur. These wind events can carry dust in from the surrounding arid landscape. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Ōita 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