Worst air pollution Sanyō-Onoda, today and tomorrow
Today (16 July): Air quality in Sanyō-Onoda is poor. AQI and O3 are poor; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 67.9/100).
Tomorrow (17 July 2026): Air quality in Sanyō-Onoda is poor. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 71.8/100). 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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Sanyō-Onoda's air quality reflects the Yamaguchi Prefecture Seto Inland Sea coastal position adjacent to the Toagosei chemical and cement operations, with vehicle traffic on surrounding roads and the chemical, cement, and manufacturing corridor generating elevated industrial PM2.5. Consistent Seto Inland Sea maritime breezes provide coastal ventilation, while the chemical and cement operations' distinctive industrial scale represents the most locally notable air quality contribution throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Poor
67.9/100
PM2.5 (fine particles):
Good
16.4/100
PM10 (coarse particles):
Good
7.8/100
NO2 (nitrogen dioxide):
Good
15.9/100
O3 (ozone):
Poor
67.9/100
SO2 (sulfur dioxide):
Good
8.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Good
13.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Poor
71.8/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Good
7.0/100
NO2 (nitrogen dioxide):
Fair
21.2/100
O3 (ozone):
Poor
71.8/100
SO2 (sulfur dioxide):
Good
12.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.8/100
PM1 (ultrafine particles):
Good
19.1/100
Frequently Asked Questions
Is air quality bad in Sanyō-Onoda right now?
On 16 July 2026, overall air quality in Sanyō-Onoda is poor. AQI is the main air quality indicator at 67.9/100. Pollution peaks around 4:00 PM (O3: 67.9/100).
Will air quality be worse tomorrow in Sanyō-Onoda?
On 17 July 2026, air quality conditions in Sanyō-Onoda will be similar to today, with AQI forecast at poor at 71.8/100. Pollution peaks around 3:00 PM (O3: 71.8/100).
When is air pollution at its worst in Sanyō-Onoda?
Sanyō-Onoda usually sees its poorest air quality when vehicle traffic, heavy industry such as steel, cement, or petrochemical processing, and textile and manufacturing operations coincide with periods when dry, windy weather picks up. These wind events can carry dust in from the surrounding arid landscape. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Sanyō-Onoda 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