Air Quality in Châteauguay, Canada

Windy
19.4°C · 49.1% humidity
19.4°
Feels 19.4°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
71 12am
75
70
59 3am
62
65
67 6am
68
69
67 9am
68
68
68 12pm
69
68
68 3pm
68
68
68 6pm
69
69
69 9pm
69
69
Station readings
71
75
70
CAMS model adj +44
27
27
27
27
27
27
27
27
27
25
25
25
25
25
24
24
24
24
24
25
25
25
25
25
AD 728×90

Air Quality Index Trend

47h · 2 stn

Châteauguay's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Châteauguay is 1.1× the WHO 24-hour guideline of 15 µg/m³.

49.1%
Humidity
68.5 km/h
Wind WSW
1011.3 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
16.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Châteauguay?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.516.0 µg/m³ ×1.1 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
16.0
Median
16.0
Average
16.0
Low
16.0
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -8.9

What is the 7-day forecast for Châteauguay?

08-03
24.8° 15.8°
08-04
28.7° 16.8°
1.88 mm
08-05
27.3° 15.1°
1.0 mm
08-06
25.9° 19.1°
2.5 mm
08-07
22.2° 16.1°
1.06 mm
08-08
25.2° 17.7°
08-09
31.4° 19.5°
1.13 mm
Both models agree Avg diff: 3.9°C

Where are air quality stations near Châteauguay?

37
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 8.9 µg/m³
41
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 9.8 µg/m³
30
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 7.2 µg/m³
31
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 7.4 µg/m³
27
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 6.5 µg/m³
29
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 7.0 µg/m³
31
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 7.4 µg/m³
17
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 4.1 µg/m³
18
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 4.3 µg/m³
32
Sainte-Anne-de-Bellevue, Montreal, Canada
14.8 km PM2.5: 7.7 µg/m³

What cities are near Châteauguay?

60 Dorval 59 Pointe-Claire 69 Beaconsfield 61 Côte-Saint-Luc 68 Kirkland 59 Sainte-Catherine 60 Dollard-Des Ormeaux 62 Ville-Émard 70 Pierrefonds 57 Saint-Constant
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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 2026-08-08T07:06 UTC.