Air Quality in Westmount, Canada

Clear
26.5°C · 43.8% humidity
26.5°
Feels 26.5°
77
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
70 10am
82
77
77 1pm
74
72
70 4pm
69
68
67 7pm
67
60
60 10pm
59
57
57 1am
57
57
56 4am
56
56
56 7am
56
56
Station readings
70
82
77
CAMS model adj +32
27
27
34
34
34
34
34
34
34
34
34
27
27
27
25
25
25
25
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

47h · 3 stn

Westmount'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 Westmount is 1.6× the WHO 24-hour guideline of 15 µg/m³.

43.8%
Humidity
37.8 km/h
Wind ENE
1015.4 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
77
24.55 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Westmount?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.524.55 µg/m³ ×1.6 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (2 stations within 25 km)
24.55
Median
24.52
Average
20.7
Low
28.33
High
PM2.5 µg/m³ · Model: 13.7 · Bias: -10.9

What is the 7-day forecast for Westmount?

07-21
26.5° 20.8°
07-22
25.3° 18.2°
0.19 mm
07-23
20.5° 13.5°
5.75 mm
07-24
23.6° 14.5°
1.13 mm
07-25
20.5° 18.6°
12.81 mm
07-26
22.8° 16.0°
7.56 mm
07-27
27.8° 18.4°
0.88 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Westmount?

53
Montreal
4.5 km PM2.5: 13.1 µg/m³
40
Montreal
4.5 km PM2.5: 9.6 µg/m³
40
Montreal
4.5 km PM2.5: 9.6 µg/m³
25
Montreal
4.5 km PM2.5: 6.0 µg/m³
–
canada-montreal-rue-leclaire
9.6 km PM2.5: 0.0 µg/m³
76
Montréal, Ahuntsic Live Meteo Station
10.0 km 84.0°C 52.8% RH PM2.5: 24.0 µg/m³ PM10: 24.0 µg/m³
80
canada-montreal-rue-ida-steinberg
10.1 km PM2.5: 25.9 µg/m³
37
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.2 km PM2.5: 8.9 µg/m³
132
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.2 km PM2.5: 48.1 µg/m³
193
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.2 km PM2.5: 136.8 µg/m³

What cities are near Westmount?

78 Notre-Dame-de-Grâce 77 Le Sud-Ouest 77 Saint-Henri 79 Snowdon 75 Ville-Marie 76 Montréal 76 Verdun 78 Outremont 77 Ville-Émard 77 Desmarchais-Crawford
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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 2026-07-21T17:17 UTC.