Worst air pollution Tomakomai, today and tomorrow
Today (10 August): Air quality in Tomakomai is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 33.0/100).
Tomorrow (11 August 2026): Air quality in Tomakomai is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 21.5/100). 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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Tomakomai's air quality reflects the Hokkaido Pacific Ocean coastal industrial position, with vehicle traffic on surrounding roads and the paper and pulp, petroleum refining, and port corridor generating elevated industrial PM2.5 alongside vehicle sources. Consistent Pacific maritime breezes provide coastal ventilation, while the paper and petroleum industrial scale represents Tomakomai's most distinctive local air quality contribution and the outstanding Pacific coastal exposure generally maintains moderate conditions outside direct industrial plume events throughout most of the year.
Today - 10 August | Pollution peaks at 15:00
AQI:
Fair
33.0/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
19.8/100
O3 (ozone):
Fair
33.0/100
SO2 (sulfur dioxide):
Good
3.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.4/100
PM1 (ultrafine particles):
Good
13.6/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 10:00
AQI:
Fair
21.5/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Fair
21.1/100
O3 (ozone):
Fair
21.5/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.6/100
PM1 (ultrafine particles):
Good
18.7/100
Frequently Asked Questions
Is air quality bad in Tomakomai right now?
On 10 August 2026, overall air quality in Tomakomai is fair. AQI is the main air quality indicator at 33.0/100. Pollution peaks around 3:00 PM (O3: 33.0/100).
Will air quality be worse tomorrow in Tomakomai?
On 11 August 2026, air quality conditions in Tomakomai will be similar to today, with AQI forecast at fair at 21.5/100. Pollution peaks around 10:00 AM (O3: 21.5/100).
When is air pollution at its worst in Tomakomai?
Air quality in Tomakomai tends to be worse when traffic emissions and shipbuilding and port operations build up and dry spells bring strong winds. Dust carried on these winds adds substantially to particulate levels. Onshore breezes usually help clear the air, but pollution can build up when winds are light.
Are air quality levels in Tomakomai 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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