Worst air pollution Obihiro, today and tomorrow
Today (16 July): Air quality in Obihiro is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 25.5/100).
Tomorrow (17 July 2026): Air quality in Obihiro is good. AQI improves to good; O3 decreases to good; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 19.9/100). 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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Obihiro's air quality benefits from its exceptional Hokkaido Tokachi River plain position at the Tokachi Millennium Forest, with consistent Hokkaido Pacific and sub-Arctic westerly winds providing reliable ventilation. Vehicle traffic on surrounding roads and the dairy farming, potato, and agricultural corridor contribute local sources including elevated ammonia from the surrounding extraordinary Tokachi agricultural landscape, while the outstanding Hokkaido boreal setting generally maintains Obihiro among Japan's cleaner major inland city environments throughout most of the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
25.5/100
PM2.5 (fine particles):
Good
5.4/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Good
3.5/100
O3 (ozone):
Fair
25.5/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
5.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Good
19.9/100
PM2.5 (fine particles):
Good
3.7/100
PM10 (coarse particles):
Good
1.2/100
NO2 (nitrogen dioxide):
Good
3.0/100
O3 (ozone):
Good
19.9/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
4.7/100
Frequently Asked Questions
Is air quality bad in Obihiro right now?
On 16 July 2026, overall air quality in Obihiro is fair. AQI is the main air quality indicator at 25.5/100. Pollution peaks around 12:00 PM (O3: 25.5/100).
Will air quality be worse tomorrow in Obihiro?
On 17 July 2026, air quality conditions in Obihiro will be better than today, with AQI forecast at good at 19.9/100. Pollution peaks around 1:00 PM (O3: 19.9/100).
When is air pollution at its worst in Obihiro?
The biggest local contributors to pollution in Obihiro are traffic on the surrounding roads as well as agricultural activity, particularly once winds are light and dispersion is poor. Background emissions and local weather both shape how conditions change from day to day. Local weather patterns add further day-to-day variation.
Are air quality levels in Obihiro 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