Air Quality in Le Vieux-Longueuil, Canada

Rain
15.7°C · 59.1% humidity
15.7°
Feels 15.7°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
13 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
37 5pm
24
20
24 8pm
23
24
24 11pm
26
26
26 2am
26
26
26 5am
24
24
24 8am
24
24
24 11am
24
24
24 2pm
24
24
Station readings
37
24
20
12
CAMS model adj -1
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

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

59.1%
Humidity
57.6 km/h
Wind NW
1012.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
24
5.79 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Le Vieux-Longueuil?

Temperature & Precipitation

PM2.5 Trend

44h · 2 stations
PM2.55.79 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (13 stations within 25 km)
5.79
Median
7.82
Average
3.12
Low
24.67
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +0.5

What is the 7-day forecast for Le Vieux-Longueuil?

05-30
19.4° 9.0°
8.69 mm
05-31
23.7° 6.7°
1.94 mm
06-01
25.5° 18.6°
06-02
18.4° 11.1°
2.25 mm
06-03
27.3° 15.7°
06-04
22.5° 13.8°
0.88 mm
06-05
24.2° 12.5°
10.87 mm
Both models agree Avg diff: 4.3°C

Where are air quality stations near Le Vieux-Longueuil?

–
canada-montreal-rue-leclaire
2.6 km PM2.5: 0.0 µg/m³
12
canada-montreal-rue-ida-steinberg
3.3 km PM2.5: 2.9 µg/m³
56
Montreal
4.8 km PM2.5: 14.5 µg/m³
15
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 3.6 µg/m³
108
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 38.3 µg/m³
14
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 3.4 µg/m³
68
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 20.2 µg/m³
–
canada-montreal-18e-avenue
12.2 km PM2.5: 0.0 µg/m³
12
Montréal, Ahuntsic Live Meteo Station
13.0 km 57.1°C 82.6% RH PM2.5: 3.0 µg/m³ PM10: 5.0 µg/m³
2
Laval, Quebec, Canada
17.7 km PM2.5: 0.5 µg/m³

What cities are near Le Vieux-Longueuil?

29 Longueuil 19 Mercier–Hochelaga-Maisonneuve 30 Laflèche 29 Le Plateau-Mont-Royal 29 Ville-Marie 30 Greenfield Park 31 Montréal 32 Mile End 35 Rosemont–La Petite-Patrie 36 Villeray–Saint-Michel–Parc-Extension
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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 2026-05-30T00:40 UTC.