Worst air pollution Owariasahi, today and tomorrow
Today (10 August): Air quality in Owariasahi is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 51.8/100).
Tomorrow (11 August 2026): Air quality in Owariasahi is medium. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 48.2/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Owariasahi's air quality reflects the Aichi Prefecture northeastern Nagoya metropolitan corridor adjacent to the Moriyama district, with vehicle traffic on surrounding roads and the manufacturing and residential character contributing local sources. The flat Nobi Plain allows reasonable dispersal, while summer photochemical ozone from the vast Chukyo metropolitan corridor is the primary warm-season concern and Owariasahi generally maintains moderate Nagoya metropolitan northeastern suburban readings throughout most of the year.
Today - 10 August | Pollution peaks at 12:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Good
10.5/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Good
10.4/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
5.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.1/100
PM1 (ultrafine particles):
Good
11.9/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 12:00
AQI:
Medium
48.2/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
8.2/100
O3 (ozone):
Medium
48.2/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
14.3/100
Frequently Asked Questions
Is air quality bad in Owariasahi right now?
On 10 August 2026, overall air quality in Owariasahi is medium. AQI is the main air quality indicator at 51.8/100. Pollution peaks around 12:00 PM (O3: 51.8/100).
Will air quality be worse tomorrow in Owariasahi?
On 11 August 2026, air quality conditions in Owariasahi will be similar to today, with AQI forecast at medium at 48.2/100. Pollution peaks around 12:00 PM (O3: 48.2/100).
When is air pollution at its worst in Owariasahi?
Pollution in Owariasahi typically rises when traffic on the surrounding roads, petrochemical and refining operations, as well as textile and manufacturing operations combine, especially once warm, sunny weather takes hold. Strong sunlight reacting with local emissions drives up ground-level ozone. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Owariasahi 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.