Worst air pollution Ōshū, today and tomorrow
Today (16 July): Air quality in Ōshū is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 37.9/100).
Tomorrow (17 July 2026): Air quality in Ōshū is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 21.5/100). 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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Ōshū's air quality reflects the Iwate Prefecture Kitakami River valley position in the Tohoku agricultural corridor, with vehicle traffic on surrounding roads and the traditional crafts, food processing, and agricultural corridor contributing local sources. Consistent Pacific coastal and Ou Mountain breezes provide background ventilation, while the surrounding Kitakami highlands provide topographic variation and Oshu generally maintains good to moderate conditions for a major Japanese Tohoku agricultural corridor city throughout most of the year.
Today - 16 July | Pollution peaks at 10:00
AQI:
Fair
37.9/100
PM2.5 (fine particles):
Good
8.2/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
8.2/100
O3 (ozone):
Fair
37.9/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.4/100
PM1 (ultrafine particles):
Good
10.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 09:00
AQI:
Fair
21.5/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Good
8.0/100
O3 (ozone):
Fair
21.5/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.0/100
PM1 (ultrafine particles):
Good
14.2/100
Frequently Asked Questions
Is air quality bad in Ōshū right now?
On 16 July 2026, overall air quality in Ōshū is fair. AQI is the main air quality indicator at 37.9/100. Pollution peaks around 10:00 AM (O3: 37.9/100).
Will air quality be worse tomorrow in Ōshū?
On 17 July 2026, air quality conditions in Ōshū will be similar to today, with AQI forecast at fair at 21.5/100. Pollution peaks around 9:00 AM (O3: 21.5/100).
When is air pollution at its worst in Ōshū?
Ōshū usually sees its poorest air quality when vehicle traffic, light manufacturing, and farming and agricultural processing coincide with periods when onshore breezes fall calm. Sea breezes typically keep conditions in check, except during still weather. This natural ventilation is one reason coastal areas often see better readings than inland cities.
Are air quality levels in Ōshū 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