Worst air pollution Asahi, today and tomorrow
Today (16 July): Air quality in Asahi is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (O3: 27.4/100).
Tomorrow (17 July 2026): Air quality in Asahi is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 17.4/100). 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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Asahi in Chiba reflects the flat Chiba Prefecture Kujukuri coastal plain position on the Pacific, with vehicle traffic on surrounding roads and the agricultural, fishing, and services corridor contributing modest local sources. Consistent Pacific maritime breezes provide reliable coastal ventilation, while the outstanding Kujukuri beach coastal exposure generally maintains Asahi among Chiba's more moderately ventilated coastal agricultural cities throughout most of the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Fair
27.4/100
PM2.5 (fine particles):
Good
12.1/100
PM10 (coarse particles):
Good
4.3/100
NO2 (nitrogen dioxide):
Good
3.6/100
O3 (ozone):
Fair
27.4/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
9.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Good
17.4/100
PM2.5 (fine particles):
Good
8.0/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
3.1/100
O3 (ozone):
Good
17.4/100
SO2 (sulfur dioxide):
Good
1.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
4.6/100
Frequently Asked Questions
Is air quality bad in Asahi right now?
On 16 July 2026, overall air quality in Asahi is fair. AQI is the main air quality indicator at 27.4/100. Pollution peaks around 12:00 AM (O3: 27.4/100).
Will air quality be worse tomorrow in Asahi?
On 17 July 2026, air quality conditions in Asahi will be better than today, with AQI forecast at good at 17.4/100. Pollution peaks around 12:00 PM (O3: 17.4/100).
When is air pollution at its worst in Asahi?
The biggest local contributors to pollution in Asahi are vehicle traffic, farming and agricultural processing, as well as fishing fleet activity, particularly once the sea breeze weakens. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. This coastal advantage is less pronounced during still, high-pressure weather.
Are air quality levels in Asahi 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