Worst air pollution Rosemont-La Petite-Patrie - Montréal, today and tomorrow
Today (16 July): Air quality in Rosemont-La Petite-Patrie is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 36.7/100).
Tomorrow (17 July 2026): Air quality in Rosemont-La Petite-Patrie is fair. All pollutants stay as today. Pollution peaks around 8:00 AM (O3: 30.9/100). 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
Use our Strava plugin to check your own exposure.
Rosemont-La Petite-Patrie's air quality reflects its dense central-east Montréal residential character, with vehicle traffic on surrounding boulevards contributing the primary local emissions.
Today - 16 July | Pollution peaks at 07:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Good
4.9/100
PM10 (coarse particles):
Good
1.9/100
NO2 (nitrogen dioxide):
Good
2.9/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
4.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 08:00
AQI:
Fair
30.9/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Good
2.8/100
O3 (ozone):
Fair
30.9/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
5.2/100
Other Landmarks in Montréal
Sports venues in Montréal
Frequently Asked Questions
Is air quality bad in Rosemont-La Petite-Patrie right now?
On 16 July 2026, overall air quality in Rosemont-La Petite-Patrie is fair. AQI is the main air quality indicator at 36.7/100. Pollution peaks around 7:00 AM (O3: 36.7/100).
Will air quality be worse tomorrow in Rosemont-La Petite-Patrie?
On 17 July 2026, air quality conditions in Rosemont-La Petite-Patrie will be similar to today, with AQI forecast at fair at 30.9/100. Pollution peaks around 8:00 AM (O3: 30.9/100).
When is air pollution at its worst in Rosemont-La Petite-Patrie?
Rosemont-La Petite-Patrie's air quality follows a seasonal rhythm tied to its dense residential streets and busy commercial strips. Warmer months usually bring elevated ozone and haze as heat, sunlight and vehicle emissions interact, while cooler months bring a marked improvement, apart from occasional temperature inversions that trap pollutants near the surface overnight. A day of rain or wind usually clears things up quickly.
Are air quality levels in Rosemont-La Petite-Patrie 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.
Check air quality in other popular cities:
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