Worst air pollution St. James - Winnipeg, today and tomorrow
Today (16 July): Air quality in St. James 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: 25.9/100).
Tomorrow (17 July 2026): Air quality in St. James is fair. All pollutants stay as today. Pollution peaks around 11:00 AM (O3: 22.9/100). 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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St. James's air quality reflects its position near Winnipeg Richardson International Airport, with aircraft operations and Portage Avenue traffic the primary local sources.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
25.9/100
PM2.5 (fine particles):
Good
10.9/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
0.8/100
O3 (ozone):
Fair
25.9/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.3/100
PM1 (ultrafine particles):
Good
7.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Fair
22.9/100
PM2.5 (fine particles):
Good
13.2/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
0.7/100
O3 (ozone):
Fair
22.9/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
10.2/100
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Frequently Asked Questions
Is air quality bad in St. James right now?
On 16 July 2026, overall air quality in St. James is fair. AQI is the main air quality indicator at 25.9/100. Pollution peaks around 12:00 PM (O3: 25.9/100).
Will air quality be worse tomorrow in St. James?
On 17 July 2026, air quality conditions in St. James will be similar to today, with AQI forecast at fair at 22.9/100. Pollution peaks around 11:00 AM (O3: 22.9/100).
When is air pollution at its worst in St. James?
Throughout the year, air quality in St. James rises and falls with the seasons, shaped by its suburban streets near the airport in west Winnipeg. Humid summer days can trap pollutants during still, stagnant stretches, while winter brings a modest rise in wood-heating smoke on the coldest nights. A blustery prairie wind system typically sweeps any buildup away within a day or so.
Are air quality levels in St. James 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