Worst air pollution Shiraoka, today and tomorrow
Today (10 August): Air quality in Shiraoka is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 38.3/100).
Tomorrow (11 August 2026): Air quality in Shiraoka is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 45.1/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Shiraoka's air quality reflects the flat Saitama Motoarakawa River plain adjacent to Tokyo, with vehicle traffic on surrounding roads and the manufacturing, residential, and agricultural character contributing local sources. The flat Kanto Plain allows reasonable dispersal, while summer photochemical ozone from the broader Kanto corridor is the primary warm-season concern and Shiraoka generally maintains moderate Tokyo northern Saitama suburban readings throughout most of the year.
Today - 10 August | Pollution peaks at 11:00
AQI:
Fair
38.3/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
16.6/100
O3 (ozone):
Fair
38.3/100
SO2 (sulfur dioxide):
Good
9.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.3/100
PM1 (ultrafine particles):
Good
13.5/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 13:00
AQI:
Medium
45.1/100
PM2.5 (fine particles):
Good
8.2/100
PM10 (coarse particles):
Good
2.5/100
NO2 (nitrogen dioxide):
Good
19.6/100
O3 (ozone):
Medium
45.1/100
SO2 (sulfur dioxide):
Good
10.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.5/100
PM1 (ultrafine particles):
Good
10.1/100
Frequently Asked Questions
Is air quality bad in Shiraoka right now?
On 10 August 2026, overall air quality in Shiraoka is fair. AQI is the main air quality indicator at 38.3/100. Pollution peaks around 11:00 AM (O3: 38.3/100).
Will air quality be worse tomorrow in Shiraoka?
On 11 August 2026, air quality conditions in Shiraoka will be better than today, with AQI forecast at medium at 45.1/100. Pollution peaks around 1:00 PM (O3: 45.1/100).
When is air pollution at its worst in Shiraoka?
The biggest local contributors to pollution in Shiraoka are traffic on the surrounding roads, steel, cement, and chemical production, and textile and manufacturing operations, particularly once summer heat and strong sunlight build up. Heat and sunlight combine with emissions to form ozone at ground level. This is far less of an issue outside the warmer months.
Are air quality levels in Shiraoka 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.