Worst air pollution Sayama, today and tomorrow
Today (16 July): Air quality in Sayama 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 Sayama is very poor. PM2.5 increases to fair; SO2 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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Sayama in Osaka reflects the Osaka Prefecture southeastern corridor in Osaka-Sayama city adjacent to the Kongo Mountains, with vehicle traffic on surrounding roads and the manufacturing and residential 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
17.1/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Good
16.7/100
O3 (ozone):
Very poor
84.6/100
SO2 (sulfur dioxide):
Good
12.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.3/100
PM1 (ultrafine particles):
Fair
21.7/100
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
21.1/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
18.3/100
O3 (ozone):
Very poor
100/100
SO2 (sulfur dioxide):
Fair
21.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.6/100
PM1 (ultrafine particles):
Fair
26.1/100
Frequently Asked Questions
Is air quality bad in Sayama right now?
On 16 July 2026, overall air quality in Sayama 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 Sayama?
On 17 July 2026, air quality conditions in Sayama 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 Sayama?
In Sayama, road traffic and light manufacturing are the main local sources, with conditions worsening when maritime winds die down. Onshore breezes usually help clear the air, but pollution can build up when winds are light. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Sayama 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