Air Quality in Saint-Laurent, Canada

Clear
27.5°C · 39.2% humidity
27.5°
Feels 27.5°
82
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
77 10am
91
77
82 1pm
78
75
73 4pm
72
71
70 7pm
69
62
62 10pm
61
59
59 1am
59
59
58 4am
58
58
58 7am
58
58
Station readings
77
91
77
CAMS model adj +34
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 · 2 stn

Saint-Laurent'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 Saint-Laurent is 1.8× the WHO 24-hour guideline of 15 µg/m³.

39.2%
Humidity
37.1 km/h
Wind ENE
1015.1 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
82
26.75 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Saint-Laurent?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.526.75 µg/m³ ×1.8 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (2 stations within 25 km)
26.75
Median
24.52
Average
20.7
Low
28.33
High
PM2.5 µg/m³ · Model: 13.7 · Bias: -13.1

What is the 7-day forecast for Saint-Laurent?

07-21
27.5° 21.6°
07-22
25.9° 19.0°
07-23
20.0° 13.6°
5.87 mm
07-24
23.1° 15.4°
0.94 mm
07-25
20.5° 19.1°
12.75 mm
07-26
23.2° 16.0°
9.19 mm
07-27
27.2° 18.4°
1.19 mm
Both models agree Avg diff: 2.7°C

Where are air quality stations near Saint-Laurent?

76
Montréal, Ahuntsic Live Meteo Station
6.3 km 84.0°C 52.8% RH PM2.5: 24.0 µg/m³ PM10: 24.0 µg/m³
25
Montreal
8.8 km PM2.5: 6.0 µg/m³
53
Montreal
8.8 km PM2.5: 13.1 µg/m³
40
Montreal
8.8 km PM2.5: 9.6 µg/m³
40
Montreal
8.8 km PM2.5: 9.6 µg/m³
–
canada-montreal-rue-leclaire
12.2 km PM2.5: 0.0 µg/m³
80
canada-montreal-rue-ida-steinberg
12.4 km PM2.5: 25.9 µg/m³
15
Laval, Quebec, Canada
12.4 km PM2.5: 3.6 µg/m³
35
Laval, Quebec, Canada
12.4 km PM2.5: 8.4 µg/m³
34
Laval, Quebec, Canada
12.4 km PM2.5: 8.2 µg/m³

What cities are near Saint-Laurent?

82 Mont-Royal 79 Snowdon 80 Côte-Saint-Luc 82 Parc-Extension 84 Cartierville 78 Outremont 78 Notre-Dame-de-Grâce 77 Westmount 76 Mile End 78 Rosemont–La Petite-Patrie
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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 2026-07-21T17:24 UTC.