Worst air pollution Ōsakasayama, today and tomorrow
Today (16 July): Air quality in Ōsakasayama is very poor. AQI and O3 are very poor; PM1 is fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 4:00 PM (O3: 84.6/100).
Tomorrow (17 July 2026): Air quality in Ōsakasayama is very poor. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 100/100). 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
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Ōsakasayama's air quality reflects the Osaka Prefecture southeastern Kawachi Nagano corridor adjacent to the Kongo Mountains, with vehicle traffic on surrounding roads and the residential and commercial character contributing local sources. Osaka Bay breezes provide limited maritime ventilation, while the broader Kinki metropolitan regional background maintains moderate Osaka southeastern suburban readings throughout most of the year.
Today - 16 July | Pollution peaks at 16:00
AQI:
Very poor
84.6/100
PM2.5 (fine particles):
Good
16.3/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
10.4/100
O3 (ozone):
Very poor
84.6/100
SO2 (sulfur dioxide):
Good
7.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.3/100
PM1 (ultrafine particles):
Fair
20.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Fair
20.2/100
PM10 (coarse particles):
Good
5.7/100
NO2 (nitrogen dioxide):
Good
11.4/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Good
13.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.6/100
PM1 (ultrafine particles):
Fair
25.1/100
Frequently Asked Questions
Is air quality bad in Ōsakasayama right now?
On 16 July 2026, overall air quality in Ōsakasayama is very poor. AQI is the main air quality indicator at 84.6/100. Pollution peaks around 4:00 PM (O3: 84.6/100).
Will air quality be worse tomorrow in Ōsakasayama?
On 17 July 2026, air quality conditions in Ōsakasayama will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 1:00 PM (O3: 100/100).
When is air pollution at its worst in Ōsakasayama?
In Ōsakasayama, vehicle traffic is the main local source, with conditions worsening when onshore breezes fall calm. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Ōsakasayama 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