Worst air pollution Settsu, today and tomorrow
Today (16 July): Air quality in Settsu is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (O3: 71.7/100).
Tomorrow (17 July 2026): Air quality in Settsu is very poor. AQI worsens to very poor; PM2.5 increases to fair; O3 increases to very poor; SO2 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (O3: 89.1/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Settsu's air quality reflects the Osaka metropolitan area's northern Jōgan River position adjacent to Osaka city, with vehicle traffic on surrounding roads and the manufacturing, residential, and commercial character contributing local sources. Osaka Bay breezes provide limited maritime ventilation, while the broader Kinki metropolitan regional background and summer photochemical ozone from the vast metropolitan corridor maintain moderate to elevated Osaka northern inner metropolitan readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Poor
71.7/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Fair
21.7/100
O3 (ozone):
Poor
71.7/100
SO2 (sulfur dioxide):
Good
14.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
17.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 16:00
AQI:
Very poor
89.1/100
PM2.5 (fine particles):
Fair
20.9/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Fair
27.3/100
O3 (ozone):
Very poor
89.1/100
SO2 (sulfur dioxide):
Fair
22.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.4/100
PM1 (ultrafine particles):
Fair
26.4/100
Frequently Asked Questions
Is air quality bad in Settsu right now?
On 16 July 2026, overall air quality in Settsu is poor. AQI is the main air quality indicator at 71.7/100. Pollution peaks around 2:00 PM (O3: 71.7/100).
Will air quality be worse tomorrow in Settsu?
On 17 July 2026, air quality conditions in Settsu will be worse than today, with AQI forecast at very poor at 89.1/100. Pollution peaks around 4:00 PM (O3: 89.1/100).
When is air pollution at its worst in Settsu?
In Settsu, road traffic, petrochemical and refining operations, and manufacturing and food processing are the main local sources, with conditions worsening when hot, still weather settles in. Heat and sunlight combine with emissions to form ozone at ground level. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Settsu 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.
Check air quality in other popular cities:
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