Worst air pollution Sault Ste. Marie, today and tomorrow
Today (9 August): Air quality in Sault Ste. Marie is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 35.7/100).
Tomorrow (10 August 2026): Air quality in Sault Ste. Marie is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 35.4/100). Airmine updates local air quality forecasts four times daily.
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In Sault Ste. Marie, cold, clean Lake Superior air is the main influence on air quality, and air quality is consistently excellent year-round. Overall, Sault Ste. Marie sees air quality that tracks fairly closely with typical conditions for its wider region. Local topography and prevailing winds both play a role in how quickly conditions change.
Today - 9 August | Pollution peaks at 08:00
AQI:
Fair
35.7/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
7.8/100
NO2 (nitrogen dioxide):
Good
15.2/100
O3 (ozone):
Fair
35.7/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.1/100
PM1 (ultrafine particles):
Good
6.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 12:00
AQI:
Fair
35.4/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Good
19.9/100
O3 (ozone):
Fair
35.4/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
6.9/100
Pollen forecast in Sault Ste. Marie
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Sault Ste. Marie
Frequently Asked Questions
Is air quality bad in Sault Ste. Marie right now?
On 9 August 2026, overall air quality in Sault Ste. Marie is fair. AQI is the main air quality indicator at 35.7/100. Pollution peaks around 8:00 AM (O3: 35.7/100).
Will air quality be worse tomorrow in Sault Ste. Marie?
On 10 August 2026, air quality conditions in Sault Ste. Marie will be similar to today, with AQI forecast at fair at 35.4/100. Pollution peaks around 12:00 PM (O3: 35.4/100).
When is air pollution at its worst in Sault Ste. Marie?
Sault Ste. Marie's air quality has a clear seasonal rhythm. In short, a brief stretch in early autumn is often the year's cleanest, once summer ozone season fades, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Sault Ste. Marie 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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