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

The current Air Quality Index (AQI) in Mont-Saint-Hilaire is 29 (Good). PM2.5 concentration is 7.0 µg/m³.

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

The current temperature in Mont-Saint-Hilaire is 11.8°C (feels like 11.8°C). Humidity is 79.9% and wind speed is 32.8 km/h.

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

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 2.9 (Moderate).

Air Quality in Mont-Saint-Hilaire, Canada

Cloudy

11.8°C · 79.9% humidity

11.8°

Feels 11.8°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

24 3pm

29 6pm

36 9pm

35 12am

25 3am

24 6am

25 9am

25 12pm

Air Quality Index Trend

48h · 3 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.

79.9%

Humidity

32.8 km/h

Wind SSW

998.2 hPa

Pressure

2.9

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.0 µg/m³

PM10

13.7 µg/m³

050100150200300500

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

Temperature & Precipitation

PM2.5 Trend

48h · 3 stations

PM2.57.0 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX2.9

Moderate

Station readings (1 station within 25 km)

7.0

Median

7.0

Average

7.0

Low

7.0

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -1.1

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

06-08

18.3° 9.4°

06-09

25.1° 10.9°

0.88 mm

06-10

17.3° 9.8°

9.94 mm

06-11

23.4° 8.3°

06-12

19.3° 15.5°

13.81 mm

06-13

26.7° 16.2°

26.37 mm

06-14

24.7° 9.6°

11.88 mm

Both models agree Avg diff: 6.7°C

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

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 2.9 µg/m³

113

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 40.4 µg/m³

Vallée-du-Richelieu, Quebec, Canada

3.6 km PM2.5: 1.2 µg/m³

155

Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada

25.8 km PM2.5: 63.2 µg/m³

Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada

25.8 km PM2.5: 3.6 µg/m³

Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada

25.8 km PM2.5: 6.5 µg/m³

114

Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada

25.8 km PM2.5: 40.8 µg/m³

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canada-montreal-18e-avenue

26.3 km PM2.5: 0.0 µg/m³

What cities are near Mont-Saint-Hilaire?

30 Beloeil 33 Saint-Basile-le-Grand 35 Sainte-Julie 35 Saint-Bruno-de-Montarville 28 Chambly 33 Saint-Hubert 29 Saint-Hyacinthe 34 Boucherville 34 Longueuil 35 Laflèche

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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-08T22:15 UTC.