Worst air pollution Basilique Sainte-Anne-de-Beaupre - Quebec City, today and tomorrow
Today (9 August): Air quality in Basilique Sainte-Anne-de-Beaupre is fair. PM2.5, PM10, and O3 are fair; AQI and NO2 are medium; SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (NO2: 48.7/100).
Tomorrow (10 August 2026): Air quality in Basilique Sainte-Anne-de-Beaupre is fair. AQI worsens to fair; PM2.5 decreases to good; PM10 decreases to good; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 AM (NO2: 39.9/100). 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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Basilique Sainte-Anne-de-Beaupré's air quality benefits from its St. Lawrence River shoreline position, with river breezes providing reliable ventilation, though pilgrim coach traffic generates seasonal local peaks.
Today - 9 August | Pollution peaks at 01:00
AQI:
Medium
48.7/100
PM2.5 (fine particles):
Fair
27.7/100
PM10 (coarse particles):
Fair
21.7/100
NO2 (nitrogen dioxide):
Medium
48.7/100
O3 (ozone):
Fair
38.0/100
SO2 (sulfur dioxide):
Good
9.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.2/100
PM1 (ultrafine particles):
Good
16.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 01:00
AQI:
Fair
39.9/100
PM2.5 (fine particles):
Good
19.7/100
PM10 (coarse particles):
Good
14.1/100
NO2 (nitrogen dioxide):
Fair
39.9/100
O3 (ozone):
Fair
27.3/100
SO2 (sulfur dioxide):
Good
10.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
11.8/100
Other Landmarks in Quebec City
Sports venues in Quebec City
Frequently Asked Questions
Is air quality bad in Basilique Sainte-Anne-de-Beaupre right now?
On 9 August 2026, overall air quality in Basilique Sainte-Anne-de-Beaupre is fair. O3 is the main pollutant at 38.0/100. Pollution peaks around 1:00 AM (NO2: 48.7/100).
Will air quality be worse tomorrow in Basilique Sainte-Anne-de-Beaupre?
On 10 August 2026, air quality conditions in Basilique Sainte-Anne-de-Beaupre will be similar to today, with AQI forecast at fair at 39.9/100. Pollution peaks around 1:00 AM (NO2: 39.9/100).
When is air pollution at its worst in Basilique Sainte-Anne-de-Beaupre?
Air quality at Basilique Sainte-Anne-de-Beaupré shifts noticeably across the seasons, shaped by its riverside pilgrimage setting east of Quebec City. 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. Its position along the St. Lawrence River tends to moderate the sharpest seasonal extremes.
Are air quality levels in Basilique Sainte-Anne-de-Beaupre 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: 9 August 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.
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