Air Quality in Le Vieux-Longueuil, Canada

Windy
12.3°C · 74.5% humidity
12.3°
Feels 12.3°
16
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
13 6pm
12
20
16 9pm
23
29
32 12am
35
17
11 3am
12
13
14 6am
14
14
15 9am
15
15
15 12pm
15
15
15 3pm
13
13
Station readings
13
12
20
CAMS model adj -12
25
25
27
54
54
54
54
54
34
27
27
27
27
27
27
27
27
27
27
27
27
27
25
25
AD 728×90

Air Quality Index Trend

47h · 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.

74.5%
Humidity
43.1 km/h
Wind SW
998.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
16
3.85 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Le Vieux-Longueuil?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.53.85 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
3.85
Median
3.3
Average
2.67
Low
3.93
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +9.6

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

06-09
23.4° 11.7°
1.13 mm
06-10
19.3° 12.2°
15.62 mm
06-11
24.5° 9.5°
06-12
22.3° 15.5°
13.13 mm
06-13
26.2° 16.9°
17.75 mm
06-14
26.2° 12.3°
10.5 mm
06-15
24.3° 17.5°
17.06 mm
Both models agree Avg diff: 6.8°C

Where are air quality stations near Le Vieux-Longueuil?

–
canada-montreal-rue-leclaire
2.6 km PM2.5: 0.0 µg/m³
21
canada-montreal-rue-ida-steinberg
3.3 km PM2.5: 5.0 µg/m³
56
Montreal
4.8 km PM2.5: 14.5 µg/m³
155
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 63.2 µg/m³
114
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 40.8 µg/m³
15
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 3.6 µg/m³
27
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
11.0 km PM2.5: 6.5 µg/m³
–
canada-montreal-18e-avenue
12.2 km PM2.5: 0.0 µg/m³
12
Montréal, Ahuntsic Live Meteo Station
13.0 km 83.8°C 35.6% RH PM2.5: 3.0 µg/m³ PM10: 3.0 µg/m³
124
Laval, Quebec, Canada
17.7 km PM2.5: 44.8 µg/m³

What cities are near Le Vieux-Longueuil?

15 Longueuil 16 Mercier–Hochelaga-Maisonneuve 15 Laflèche 15 Le Plateau-Mont-Royal 15 Ville-Marie 15 Greenfield Park 14 Montréal 14 Mile End 13 Rosemont–La Petite-Patrie 13 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 2026-06-09T01:08 UTC.