Worst air pollution Downtown Saskatoon - Saskatoon, today and tomorrow
Today (20 September): Air quality in Downtown Saskatoon is poor. AQI and NO2 are poor; PM2.5 is fair; PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (NO2: 62.2/100).
Tomorrow (21 September 2026): Air quality in Downtown Saskatoon is very poor. AQI worsens to very poor; PM2.5 increases to moderate; PM10 increases to fair; NO2 increases to very poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (NO2: 100/100). 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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Downtown Saskatoon's air quality benefits from its riverside position, with 2nd Avenue traffic through downtown the primary modest local source.
Today - 20 September | Pollution peaks at 15:00
AQI:
Poor
62.2/100
PM2.5 (fine particles):
Fair
36.2/100
PM10 (coarse particles):
Good
15.0/100
NO2 (nitrogen dioxide):
Poor
62.2/100
O3 (ozone):
Good
17.7/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
6.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 13:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Moderate
53.0/100
PM10 (coarse particles):
Fair
31.5/100
NO2 (nitrogen dioxide):
Very poor
100/100
O3 (ozone):
Good
17.9/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
1.3/100
HCHO (formaldehyde):
Good
9.3/100
PM1 (ultrafine particles):
Fair
24.6/100
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Frequently Asked Questions
Is air quality bad in Downtown Saskatoon right now?
On 20 September 2026, overall air quality in Downtown Saskatoon is poor. AQI is the main air quality indicator at 62.2/100. Pollution peaks around 3:00 PM (NO2: 62.2/100).
Will air quality be worse tomorrow in Downtown Saskatoon?
On 21 September 2026, air quality conditions in Downtown Saskatoon will be worse than today, with AQI forecast at very poor at 100/100. Pollution peaks around 1:00 PM (NO2: 100/100).
When is air pollution at its worst in Downtown Saskatoon?
Conditions in Downtown Saskatoon shift with the calendar, largely because of its riverside core along the South Saskatchewan River. Cold, calm winter days can trap heating and traffic emissions near the ground, while hot summer stretches occasionally bring drifting wildfire smoke from the boreal north. The flat, exposed landscape means wind usually disperses pollution fairly quickly once it picks up.
Are air quality levels in Downtown Saskatoon 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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