Worst air pollution Yachiyo, today and tomorrow
Today (16 July): Air quality in Yachiyo is fair. AQI, NO2, O3, and PM1 are fair; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (O3: 28.9/100).
Tomorrow (17 July 2026): Air quality in Yachiyo is fair. O3 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 AM (NO2: 24.5/100). 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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Yachiyo's air quality reflects the flat Chiba Prefecture Maruyama River corridor adjacent to Tokyo, with vehicle traffic on surrounding roads and the manufacturing, residential, and commercial character contributing local sources. The flat Kanto Plain allows reasonable dispersal, while the broader Tokyo metropolitan regional emissions elevate background and summer photochemical ozone from the vast Kanto corridor is the primary warm-season concern and Yachiyo generally maintains moderate Tokyo eastern Chiba suburban readings throughout most of the year.
Today - 16 July | Pollution peaks at 14:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Good
18.0/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Fair
21.4/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
10.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.1/100
PM1 (ultrafine particles):
Fair
23.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 03:00
AQI:
Fair
24.5/100
PM2.5 (fine particles):
Good
18.9/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Fair
24.5/100
O3 (ozone):
Good
16.0/100
SO2 (sulfur dioxide):
Good
12.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Fair
22.3/100
Frequently Asked Questions
Is air quality bad in Yachiyo right now?
On 16 July 2026, overall air quality in Yachiyo is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 2:00 PM (O3: 28.9/100).
Will air quality be worse tomorrow in Yachiyo?
On 17 July 2026, air quality conditions in Yachiyo will be similar to today, with AQI forecast at fair at 24.5/100. Pollution peaks around 3:00 AM (NO2: 24.5/100).
When is air pollution at its worst in Yachiyo?
The biggest local contributors to pollution in Yachiyo are traffic emissions, heavy industry such as steel, cement, or petrochemical processing, as well as textile and manufacturing operations, particularly once hot, still weather settles in. Heat and sunlight combine with emissions to form ozone at ground level. Readings are generally lower during the cooler, cloudier months.
Are air quality levels in Yachiyo 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