Air Quality in Saint-Léonard, Canada

Drizzle
13.4°C · 69.8% humidity
13.4°
Feels 13.4°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
12 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
39 5pm
60
59
32 8pm
33
37
39 11pm
42
43
44 2am
45
45
45 5am
44
44
44 8am
44
44
44 11am
44
44
44 2pm
44
44
Station readings
39
60
59
12
CAMS model adj +19
25
25
25
27
24
25
25
27
27
27
27
27
27
25
25
25
25
25
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

44h · 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.

69.8%
Humidity
60.9 km/h
Wind WNW
1012.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.75 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint-Léonard?

Temperature & Precipitation

PM2.5 Trend

44h · 2 stations
PM2.57.75 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (12 stations within 25 km)
7.75
Median
8.02
Average
3.12
Low
24.67
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -1.5

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

05-30
19.2° 8.3°
6.87 mm
05-31
21.9° 6.3°
4.12 mm
06-01
24.2° 16.7°
06-02
18.4° 9.5°
1.5 mm
06-03
26.2° 14.3°
06-04
22.5° 12.8°
1.0 mm
06-05
22.5° 11.6°
6.88 mm
Both models agree Avg diff: 4.4°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
12
Montréal, Ahuntsic Live Meteo Station
6.9 km 57.1°C 82.6% RH PM2.5: 3.0 µg/m³ PM10: 5.0 µg/m³
56
Montreal
9.4 km PM2.5: 14.5 µg/m³
2
Laval, Quebec, Canada
9.4 km PM2.5: 0.5 µg/m³
134
Laval, Quebec, Canada
9.4 km PM2.5: 48.9 µg/m³
36
Laval, Quebec, Canada
9.4 km PM2.5: 8.6 µg/m³
–
canada-montreal-18e-avenue
9.7 km PM2.5: 0.0 µg/m³
124
Terrebonne - secteur du parc Vaillant, Quebec, Canada
13.9 km PM2.5: 44.8 µg/m³
51
Terrebonne - secteur du parc Vaillant, Quebec, Canada
13.9 km PM2.5: 12.1 µg/m³

What cities are near Saint-Léonard?

42 Saint-Michel 29 Montréal-Nord 36 Villeray–Saint-Michel–Parc-Extension 19 Mercier–Hochelaga-Maisonneuve 33 Saint-Vincent-de-Paul 48 Duvernay 35 Rosemont–La Petite-Patrie 30 Rivière-des-Prairies–Pointe-aux-Trembles 70 Ahuntsic-Cartierville 37 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 2026-05-30T00:39 UTC.