Worst air pollution Chitose, today and tomorrow
Today (16 July): Air quality in Chitose is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 AM (O3: 31.3/100).
Tomorrow (17 July 2026): Air quality in Chitose is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 32.5/100). 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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Chitose's air quality reflects the Hokkaido central Ishikari River plain position adjacent to New Chitose Airport — Hokkaido's main international gateway — with the airport's aviation operations and vehicle traffic on surrounding roads generating elevated NOₓ alongside the surrounding residential and manufacturing character. The clean Hokkaido boreal setting generally maintains moderate conditions, while the aviation emissions represent the most distinctive local source and wood-burning stoves during extreme Hokkaido winters add seasonal PM2.5 throughout the year.
Today - 16 July | Pollution peaks at 02:00
AQI:
Fair
31.3/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
3.3/100
NO2 (nitrogen dioxide):
Fair
21.8/100
O3 (ozone):
Fair
31.3/100
SO2 (sulfur dioxide):
Good
4.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.0/100
PM1 (ultrafine particles):
Good
11.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Fair
32.5/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Fair
20.3/100
O3 (ozone):
Fair
32.5/100
SO2 (sulfur dioxide):
Good
4.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.9/100
PM1 (ultrafine particles):
Good
11.4/100
Frequently Asked Questions
Is air quality bad in Chitose right now?
On 16 July 2026, overall air quality in Chitose is fair. AQI is the main air quality indicator at 31.3/100. Pollution peaks around 2:00 AM (O3: 31.3/100).
Will air quality be worse tomorrow in Chitose?
On 17 July 2026, air quality conditions in Chitose will be similar to today, with AQI forecast at fair at 32.5/100. Pollution peaks around 3:00 PM (O3: 32.5/100).
When is air pollution at its worst in Chitose?
Air quality in Chitose tends to be worse when road traffic, aviation activity from the nearby airport, as well as light manufacturing build up and winds are light and dispersion is poor. Background emissions and local weather both shape how conditions change from day to day. Background emissions and local weather both play a role in day-to-day changes.
Are air quality levels in Chitose 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