Worst air pollution Okegawa, today and tomorrow
Today (16 July): Air quality in Okegawa is poor. AQI and O3 are poor; PM1 is fair; PM2.5, PM10, NO2, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 72.9/100).
Tomorrow (17 July 2026): Air quality in Okegawa is fair. AQI improves to fair; O3 decreases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 30.9/100). 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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Okegawa's air quality reflects the flat Saitama northern Arakawa River plain position, 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 and the Karakkaze Foehn winds create distinctive local meteorological dynamics and Okegawa generally maintains moderate Japanese inland Kanto plain suburban readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Poor
72.9/100
PM2.5 (fine particles):
Good
16.7/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Good
0.9/100
O3 (ozone):
Poor
72.9/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Fair
21.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
30.9/100
PM2.5 (fine particles):
Good
17.0/100
PM10 (coarse particles):
Good
4.6/100
NO2 (nitrogen dioxide):
Good
1.3/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.7/100
PM1 (ultrafine particles):
Fair
22.8/100
Frequently Asked Questions
Is air quality bad in Okegawa right now?
On 16 July 2026, overall air quality in Okegawa is poor. AQI is the main air quality indicator at 72.9/100. Pollution peaks around 1:00 PM (O3: 72.9/100).
Will air quality be worse tomorrow in Okegawa?
On 17 July 2026, air quality conditions in Okegawa will be better than today, with AQI forecast at fair at 30.9/100. Pollution peaks around 12:00 PM (O3: 30.9/100).
When is air pollution at its worst in Okegawa?
Air quality in Okegawa tends to be worse when traffic emissions, petrochemical and refining operations, along with manufacturing and food processing build up and hot, still weather settles in. Photochemical reactions in the heat push ozone levels higher. Cooler temperatures for the rest of the year keep this in check.
Are air quality levels in Okegawa 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