Worst air pollution Ashiya, today and tomorrow
Today (16 July): Air quality in Ashiya is poor. AQI and O3 are poor; PM2.5 and PM1 are fair; NO2 is medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 PM (O3: 65.3/100).
Tomorrow (17 July 2026): Air quality in Ashiya is poor. SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 74.0/100). 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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Ashiya's air quality benefits from its exceptional Hyogo Prefecture Osaka Bay and Rokko Mountain coastal position, with consistent Osaka Bay and Kobe-Ashiya sea breezes providing reliable maritime ventilation along this famous affluent residential coast. Vehicle traffic on surrounding roads and the upscale residential and commercial character contribute modest local sources, while the outstanding coastal exposure and the Rokko Mountain backdrop create topographic variation and Ashiya generally maintains among the Hanshin corridor's more moderately ventilated coastal residential environments throughout most of the year.
Today - 16 July | Pollution peaks at 15:00
AQI:
Poor
65.3/100
PM2.5 (fine particles):
Fair
22.1/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Medium
43.5/100
O3 (ozone):
Poor
65.3/100
SO2 (sulfur dioxide):
Good
19.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.1/100
PM1 (ultrafine particles):
Fair
26.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Poor
74.0/100
PM2.5 (fine particles):
Fair
29.5/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Medium
48.3/100
O3 (ozone):
Poor
74.0/100
SO2 (sulfur dioxide):
Fair
25.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
16.3/100
PM1 (ultrafine particles):
Fair
36.2/100
Frequently Asked Questions
Is air quality bad in Ashiya right now?
On 16 July 2026, overall air quality in Ashiya is poor. AQI is the main air quality indicator at 65.3/100. Pollution peaks around 3:00 PM (O3: 65.3/100).
Will air quality be worse tomorrow in Ashiya?
On 17 July 2026, air quality conditions in Ashiya will be similar to today, with AQI forecast at poor at 74.0/100. Pollution peaks around 4:00 PM (O3: 74.0/100).
When is air pollution at its worst in Ashiya?
Air quality in Ashiya tends to be worse when road traffic and onshore breezes fall calm. Onshore breezes usually help clear the air, but pollution can build up when winds are light. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Ashiya 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