What is the air quality in Mont-Saint-Hilaire today?

The current Air Quality Index (AQI) in Mont-Saint-Hilaire is 25 (Good). PM2.5 concentration is 6.0 µg/m³.

What is the temperature in Mont-Saint-Hilaire right now?

The current temperature in Mont-Saint-Hilaire is 2.1°C (feels like -3.2°C). Humidity is 49.3% and wind speed is 24.9 km/h.

Is it safe to go outside in Mont-Saint-Hilaire?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Mont-Saint-Hilaire, Canada

Clear

2.1°C · 49.3% humidity

2.1°

Feels -3.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 11 stn

View full history →

Mont-Saint-Hilaire's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

49.3%

Humidity

24.9 km/h

Wind SW

1029.9 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Mont-Saint-Hilaire?

Temperature & Precipitation

PM2.5 Trend

45h · 11 stations

PM2.56.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Mont-Saint-Hilaire?

10-21

14.5° 2.1°

10-22

12.1° 3.3°

14.19 mm

10-23

13.9° 6.2°

2.06 mm

10-24

15.5° 2.9°

0.38 mm

10-25

18.2° 6.2°

13.94 mm

10-26

7.6° 4.3°

2.38 mm

10-27

9.3° 2.8°

1.19 mm

Both models agree Avg diff: 4.8°C

Where are air quality stations near Mont-Saint-Hilaire?

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 5.0 µg/m³

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 9.1 µg/m³

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 5.0 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 9.1 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 7.2 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 6.7 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 7.0 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 5.8 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 7.2 µg/m³

Saint-Jean-Baptiste, Montreal, Canada

25.8 km PM2.5: 6.2 µg/m³

What cities are near Mont-Saint-Hilaire?

29 Beloeil 52 Saint-Basile-le-Grand 44 Sainte-Julie 48 Saint-Bruno-de-Montarville 44 Chambly 49 Saint-Hubert 25 Saint-Hyacinthe 45 Boucherville 53 Longueuil 51 Laflèche

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-21T01:27 UTC.