Worst air pollution Sorel-Tracy, today and tomorrow
Today (16 July): Air quality in Sorel-Tracy is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 38.9/100).
Tomorrow (17 July 2026): Air quality in Sorel-Tracy is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 32.3/100). 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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Sorel-Tracy's air quality reflects its industrial river-confluence position, with legacy metallurgical industry and vehicle traffic on Highway 30 contributing local sources amid reasonable river-valley ventilation.
Today - 16 July | Pollution peaks at 07:00
AQI:
Fair
38.9/100
PM2.5 (fine particles):
Good
7.1/100
PM10 (coarse particles):
Good
2.7/100
NO2 (nitrogen dioxide):
Fair
27.2/100
O3 (ozone):
Fair
38.9/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.2/100
PM1 (ultrafine particles):
Good
7.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
32.3/100
PM2.5 (fine particles):
Good
7.0/100
PM10 (coarse particles):
Good
2.8/100
NO2 (nitrogen dioxide):
Good
14.8/100
O3 (ozone):
Fair
32.3/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Good
6.0/100
Pollen forecast in Sorel-Tracy
View pollen forecastFrequently Asked Questions
Is air quality bad in Sorel-Tracy right now?
On 16 July 2026, overall air quality in Sorel-Tracy is fair. AQI is the main air quality indicator at 38.9/100. Pollution peaks around 7:00 AM (O3: 38.9/100).
Will air quality be worse tomorrow in Sorel-Tracy?
On 17 July 2026, air quality conditions in Sorel-Tracy will be similar to today, with AQI forecast at fair at 32.3/100. Pollution peaks around 10:00 AM (O3: 32.3/100).
When is air pollution at its worst in Sorel-Tracy?
Seasonal air quality in Sorel-Tracy is closely linked to its riverside heavy industry where the Richelieu meets the St. Lawrence. Summer heat can worsen conditions when plant emissions combine with sunlight to form ground-level ozone, while winter inversions occasionally trap industrial pollutants close to the ground on still, cold days. Wind direction off the harbour plays a large role in how far pollutants travel into surrounding neighbourhoods.
Are air quality levels in Sorel-Tracy 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