Worst air pollution Ishikari, today and tomorrow
Today (16 July): Air quality in Ishikari is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 AM (O3: 27.6/100).
Tomorrow (17 July 2026): Air quality in Ishikari is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 55.0/100). 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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Ishikari's air quality reflects the Hokkaido Ishikari Bay coastal position at the Ishikari River delta adjacent to Sapporo, with vehicle traffic on surrounding roads and the steel, petrochemical, and agricultural corridor contributing local sources. Consistent Sea of Japan and Pacific maritime breezes provide coastal ventilation, while the clean Hokkaido boreal setting generally maintains moderate conditions and the broader Sapporo metropolitan regional background influences readings throughout most of the year.
Today - 16 July | Pollution peaks at 02:00
AQI:
Fair
27.6/100
PM2.5 (fine particles):
Good
11.0/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
15.2/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.2/100
PM1 (ultrafine particles):
Good
14.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
55.0/100
PM2.5 (fine particles):
Good
10.8/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Medium
55.0/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.2/100
PM1 (ultrafine particles):
Good
14.3/100
Frequently Asked Questions
Is air quality bad in Ishikari right now?
On 16 July 2026, overall air quality in Ishikari is fair. AQI is the main air quality indicator at 27.6/100. Pollution peaks around 2:00 AM (O3: 27.6/100).
Will air quality be worse tomorrow in Ishikari?
On 17 July 2026, air quality conditions in Ishikari will be better than today, with AQI forecast at medium at 55.0/100. Pollution peaks around 3:00 PM (O3: 55.0/100).
When is air pollution at its worst in Ishikari?
Pollution in Ishikari typically rises when vehicle traffic, heavy industrial and chemical processing, together with crop farming combine, especially once the sea breeze weakens. Maritime airflow normally ventilates the area well, though calmer spells let levels rise. Areas further inland without this ventilation tend to fare worse.
Are air quality levels in Ishikari 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