Worst air pollution Sennan, today and tomorrow
Today (16 July): Air quality in Sennan is poor. AQI and O3 are poor; PM2.5, NO2, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 76.7/100).
Tomorrow (17 July 2026): Air quality in Sennan is very poor. AQI worsens to very poor; O3 increases to very poor; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 97.1/100). 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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Sennan's air quality reflects the Osaka Prefecture southern Osaka Bay coastal position adjacent to Kansai International Airport, with vehicle traffic on surrounding roads and the airport's aviation operations and the textile and manufacturing corridor generating elevated NOₓ. Consistent Osaka Bay maritime breezes provide coastal ventilation, while the aviation emissions represent the most distinctive local source and summer photochemical ozone from the Kinki corridor is the primary warm-season concern.
Today - 16 July | Pollution peaks at 16:00
AQI:
Poor
76.7/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
25.5/100
O3 (ozone):
Poor
76.7/100
SO2 (sulfur dioxide):
Good
10.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.0/100
PM1 (ultrafine particles):
Fair
26.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Very poor
97.1/100
PM2.5 (fine particles):
Fair
31.2/100
PM10 (coarse particles):
Good
9.0/100
NO2 (nitrogen dioxide):
Fair
24.3/100
O3 (ozone):
Very poor
97.1/100
SO2 (sulfur dioxide):
Good
19.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
14.5/100
PM1 (ultrafine particles):
Fair
38.0/100
Frequently Asked Questions
Is air quality bad in Sennan right now?
On 16 July 2026, overall air quality in Sennan is poor. AQI is the main air quality indicator at 76.7/100. Pollution peaks around 4:00 PM (O3: 76.7/100).
Will air quality be worse tomorrow in Sennan?
On 17 July 2026, air quality conditions in Sennan will be worse than today, with AQI forecast at very poor at 97.1/100. Pollution peaks around 3:00 PM (O3: 97.1/100).
When is air pollution at its worst in Sennan?
Sennan usually sees its poorest air quality when traffic on the surrounding roads, aircraft operations at the local air base, together with heavy industrial and chemical processing coincide with periods when summer heat and strong sunlight build up. Heat and sunlight combine with emissions to form ozone at ground level. Sea breezes typically keep conditions in check, except during still weather.
Are air quality levels in Sennan 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