Worst air pollution Sanctuaire du Cap-de-la-Madeleine - Trois-Rivières, today and tomorrow
Today (16 July): Air quality in Sanctuaire du Cap-de-la-Madeleine is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 41.5/100).
Tomorrow (17 July 2026): Air quality in Sanctuaire du Cap-de-la-Madeleine is fair. AQI worsens to fair; NO2 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 33.1/100). 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.
Sanctuaire du Cap-de-la-Madeleine's air quality benefits from its St. Lawrence riverside position, with river breezes providing reliable ventilation, though pilgrim coach traffic generates seasonal local peaks.
Today - 16 July | Pollution peaks at 07:00
AQI:
Medium
41.5/100
PM2.5 (fine particles):
Good
10.2/100
PM10 (coarse particles):
Good
3.5/100
NO2 (nitrogen dioxide):
Fair
23.1/100
O3 (ozone):
Medium
41.5/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.1/100
PM1 (ultrafine particles):
Good
11.7/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 11:00
AQI:
Fair
33.1/100
PM2.5 (fine particles):
Good
6.1/100
PM10 (coarse particles):
Good
2.3/100
NO2 (nitrogen dioxide):
Good
14.9/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
6.9/100
Other Landmarks in Trois-Rivières
Sports venues in Trois-Rivières
Frequently Asked Questions
Is air quality bad in Sanctuaire du Cap-de-la-Madeleine right now?
On 16 July 2026, overall air quality in Sanctuaire du Cap-de-la-Madeleine is fair. NO2 is the main pollutant at 23.1/100. Pollution peaks around 7:00 AM (O3: 41.5/100).
Will air quality be worse tomorrow in Sanctuaire du Cap-de-la-Madeleine?
On 17 July 2026, air quality conditions in Sanctuaire du Cap-de-la-Madeleine will be similar to today, with AQI forecast at fair at 33.1/100. Pollution peaks around 11:00 AM (O3: 33.1/100).
When is air pollution at its worst in Sanctuaire du Cap-de-la-Madeleine?
Air quality at the Sanctuaire du Cap-de-la-Madeleine shifts noticeably across the seasons, shaped by its riverside pilgrimage site amid Trois-Rivières's industry. Air quality here tends to dip in summer, when heat and industrial output combine, and again briefly in winter when cold, calm air traps emissions near ground level. Residents closer to the industrial waterfront tend to notice the seasonal swing more sharply than those higher up.
Are air quality levels in Sanctuaire du Cap-de-la-Madeleine 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