Worst air pollution Mihara, today and tomorrow
Today (16 July): Air quality in Mihara is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 63.8/100).
Tomorrow (17 July 2026): Air quality in Mihara is very poor. AQI worsens to very poor; PM2.5 increases to fair; O3 increases to very poor; PM1 increases to medium; all other pollutants stay as today. Pollution peaks around 2:00 PM (O3: 100/100). 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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Mihara's air quality reflects the Hiroshima Prefecture Seto Inland Sea coastal position adjacent to the Nippon Steel Mihara Works, with vehicle traffic on surrounding roads and the steel, chemical, and manufacturing corridor generating elevated industrial PM2.5. Consistent Seto Inland Sea maritime breezes provide coastal ventilation, while the steel complex's industrial scale represents Mihara's most distinctive local air quality contribution and the coastal position generally maintains moderate readings outside direct industrial plume events.
Today - 16 July | Pollution peaks at 15:00
AQI:
Poor
63.8/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Fair
29.2/100
O3 (ozone):
Poor
63.8/100
SO2 (sulfur dioxide):
Good
8.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.6/100
PM1 (ultrafine particles):
Good
17.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 14:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Fair
34.2/100
PM10 (coarse particles):
Good
10.8/100
NO2 (nitrogen dioxide):
Fair
28.1/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Good
15.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
15.5/100
PM1 (ultrafine particles):
Medium
40.0/100
Frequently Asked Questions
Is air quality bad in Mihara right now?
On 16 July 2026, overall air quality in Mihara is poor. AQI is the main air quality indicator at 63.8/100. Pollution peaks around 3:00 PM (O3: 63.8/100).
Will air quality be worse tomorrow in Mihara?
On 17 July 2026, air quality conditions in Mihara will be worse than today, with AQI forecast at very poor at 100/100. Pollution peaks around 2:00 PM (O3: 100/100).
When is air pollution at its worst in Mihara?
Air quality in Mihara tends to be worse when road traffic, heavy industry such as steel, cement, or petrochemical processing, and light manufacturing build up and dry spells bring strong winds. 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 Mihara 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