Worst air pollution Yashio, today and tomorrow
Today (16 July): Air quality in Yashio is fair. PM2.5, NO2, and PM1 are fair; AQI and O3 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 1:00 PM (O3: 58.8/100).
Tomorrow (17 July 2026): Air quality in Yashio is fair. AQI worsens to fair; PM2.5 decreases to good; O3 decreases to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (NO2: 31.0/100). 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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Yashio's air quality reflects the flat Saitama Motoarakawa River plain adjacent to Tokyo, with vehicle traffic on surrounding roads and the manufacturing, industrial, and residential character contributing local sources. The flat Kanto Plain allows reasonable dispersal, while the broader Tokyo metropolitan regional emissions elevate background and summer photochemical ozone is the primary warm-season concern and Yashio generally maintains moderate Tokyo northern Saitama industrial suburban readings throughout most of the year.
Today - 16 July | Pollution peaks at 13:00
AQI:
Medium
58.8/100
PM2.5 (fine particles):
Fair
21.0/100
PM10 (coarse particles):
Good
6.0/100
NO2 (nitrogen dioxide):
Fair
23.8/100
O3 (ozone):
Medium
58.8/100
SO2 (sulfur dioxide):
Good
13.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.0/100
PM1 (ultrafine particles):
Fair
24.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
31.0/100
PM2.5 (fine particles):
Good
14.1/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Fair
31.0/100
O3 (ozone):
Good
19.5/100
SO2 (sulfur dioxide):
Good
19.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.1/100
PM1 (ultrafine particles):
Good
18.9/100
Frequently Asked Questions
Is air quality bad in Yashio right now?
On 16 July 2026, overall air quality in Yashio is fair. PM1 is the main pollutant at 24.6/100. Pollution peaks around 1:00 PM (O3: 58.8/100).
Will air quality be worse tomorrow in Yashio?
On 17 July 2026, air quality conditions in Yashio will be similar to today, with AQI forecast at fair at 31.0/100. Pollution peaks around 10:00 AM (NO2: 31.0/100).
When is air pollution at its worst in Yashio?
In Yashio, vehicle traffic, steel, cement, and chemical production, and textile and manufacturing operations are the main local sources, with conditions worsening when dry spells bring strong winds. Dust carried on these winds adds substantially to particulate levels. Heat and sunlight combine with emissions to form ozone at ground level.
Are air quality levels in Yashio 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