Air Quality in Mercier–Hochelaga-Maisonneuve, Canada

Clear
26.5°C · 43.8% humidity
26.5°
Feels 26.5°
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
60 10am
69
80
70 1pm
68
67
66 4pm
65
64
64 7pm
64
56
56 10pm
56
54
54 1am
54
54
53 4am
53
53
53 7am
53
53
Station readings
60
69
80
CAMS model adj +29
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

Mercier–Hochelaga-Maisonneuve'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 Mercier–Hochelaga-Maisonneuve is 1.4× the WHO 24-hour guideline of 15 µg/m³.

43.8%
Humidity
37.8 km/h
Wind ENE
1015.4 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
70
20.89 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Mercier–Hochelaga-Maisonneuve?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.520.89 µg/m³ ×1.4 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (2 stations within 25 km)
20.89
Median
24.52
Average
20.7
Low
28.33
High
PM2.5 µg/m³ · Model: 13.7 · Bias: -7.2

What is the 7-day forecast for Mercier–Hochelaga-Maisonneuve?

07-21
26.5° 20.8°
07-22
25.3° 18.2°
0.19 mm
07-23
20.5° 13.5°
5.75 mm
07-24
23.6° 14.5°
1.13 mm
07-25
20.5° 18.6°
12.81 mm
07-26
22.8° 16.0°
7.56 mm
07-27
27.8° 18.4°
0.88 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Mercier–Hochelaga-Maisonneuve?

80
canada-montreal-rue-ida-steinberg
1.6 km PM2.5: 25.9 µg/m³
–
canada-montreal-rue-leclaire
2.3 km PM2.5: 0.0 µg/m³
25
Montreal
7.1 km PM2.5: 6.0 µg/m³
53
Montreal
7.1 km PM2.5: 13.1 µg/m³
40
Montreal
7.1 km PM2.5: 9.6 µg/m³
40
Montreal
7.1 km PM2.5: 9.6 µg/m³
–
canada-montreal-18e-avenue
9.0 km PM2.5: 0.0 µg/m³
76
Montréal, Ahuntsic Live Meteo Station
10.0 km 84.0°C 52.8% RH PM2.5: 24.0 µg/m³ PM10: 24.0 µg/m³
15
Laval, Quebec, Canada
13.5 km PM2.5: 3.6 µg/m³
35
Laval, Quebec, Canada
13.5 km PM2.5: 8.4 µg/m³

What cities are near Mercier–Hochelaga-Maisonneuve?

76 Saint-Léonard 78 Villeray–Saint-Michel–Parc-Extension 70 Le Vieux-Longueuil 74 Le Plateau-Mont-Royal 81 Saint-Michel 78 Rosemont–La Petite-Patrie 76 Mile End 80 Montréal-Nord 76 Montréal 78 Outremont
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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 2026-07-21T17:27 UTC.