Air Quality in Saint-Léonard, Canada

Windy
12.1°C · 78.2% humidity
12.1°
Feels 12.1°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
11 4pm
11
13
38 7pm
33
54
51 10pm
48
46
45 1am
24
16
15 4am
15
15
14 7am
14
14
14 10am
14
14
14 1pm
14
14
Station readings
11
11
13
10
CAMS model adj -13
25
25
25
25
27
54
54
54
54
54
34
27
27
27
27
27
27
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

48h · 2 stn

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

78.2%
Humidity
50.8 km/h
Wind SW
997.9 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.02 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Saint-Léonard?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.59.02 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (12 stations within 25 km)
9.02
Median
8.41
Average
2.67
Low
11.0
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -1.9

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

06-08
17.2° 9.4°
0.19 mm
06-09
25.0° 11.4°
1.56 mm
06-10
16.4° 10.4°
10.13 mm
06-11
22.8° 9.0°
06-12
19.6° 15.7°
9.13 mm
06-13
26.8° 16.8°
26.12 mm
06-14
24.1° 10.4°
5.25 mm
Both models agree Avg diff: 7.2°C

Where are air quality stations near Saint-Léonard?

12
canada-montreal-rue-ida-steinberg
5.7 km PM2.5: 2.9 µg/m³
–
canada-montreal-rue-leclaire
6.2 km PM2.5: 0.0 µg/m³
8
Montréal, Ahuntsic Live Meteo Station
6.9 km 85.8°C 31.4% RH PM2.5: 2.0 µg/m³ PM10: 4.0 µg/m³
56
Montreal
9.4 km PM2.5: 14.5 µg/m³
124
Laval, Quebec, Canada
9.4 km PM2.5: 44.8 µg/m³
2
Laval, Quebec, Canada
9.4 km PM2.5: 0.5 µg/m³
151
Laval, Quebec, Canada
9.4 km PM2.5: 55.5 µg/m³
–
canada-montreal-18e-avenue
9.7 km PM2.5: 0.0 µg/m³
–
Terrebonne - secteur du parc Vaillant, Quebec, Canada
13.9 km
51
Terrebonne - secteur du parc Vaillant, Quebec, Canada
13.9 km PM2.5: 12.1 µg/m³

What cities are near Saint-Léonard?

34 Saint-Michel 41 Montréal-Nord 36 Villeray–Saint-Michel–Parc-Extension 23 Mercier–Hochelaga-Maisonneuve 37 Saint-Vincent-de-Paul 31 Duvernay 38 Rosemont–La Petite-Patrie 42 Rivière-des-Prairies–Pointe-aux-Trembles 16 Ahuntsic-Cartierville 32 Val-des-Arbres
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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 2026-06-08T23:19 UTC.