Air Quality in Mercier–Hochelaga-Maisonneuve, Canada

Clear
5.1°C · 39.1% humidity
5.1°
Feels 1.1°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
14 stations

Nearby Monitoring Stations

AQI Forecast
4 5pm
7
55
59 8pm
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Station readings
4
7
55
152

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 1.1× the WHO 24-hour guideline of 15 µg/m³.

39.1%
Humidity
21.5 km/h
Wind WSW
1029.8 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
16.14 µg/m³
PM10
51
54.9 µg/m³
050100150200300500

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

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.516.14 µg/m³ ×1.1 WHO
Moderate
PM1054.9 µg/m³
Moderate
UV INDEX0.0
Low
Station readings (14 stations within 25 km)
16.14
Median
7.37
Average
4.1
Low
24.95
High
PM2.5 µg/m³ · Model: 19.2 · Bias: +3.1

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

10-21
14.6° 5.1°
10-22
12.0° 4.8°
11.56 mm
10-23
13.7° 7.4°
2.56 mm
10-24
14.8° 4.5°
0.5 mm
10-25
18.7° 7.0°
17.56 mm
10-26
8.5° 5.2°
1.19 mm
10-27
9.6° 3.3°
1.5 mm
Both models agree Avg diff: 4.6°C

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

137
canada-montreal-rue-ida-steinberg
1.6 km PM2.5: 50.2 µg/m³
31
Anjou, Montreal, Canada
3.6 km PM2.5: 7.4 µg/m³
28
Anjou, Montreal, Canada
3.6 km PM2.5: 6.7 µg/m³
32
Anjou, Montreal, Canada
3.6 km PM2.5: 7.7 µg/m³
25
Anjou, Montreal, Canada
3.6 km PM2.5: 6.0 µg/m³
21
Anjou, Montreal, Canada
3.6 km PM2.5: 5.0 µg/m³
26
Anjou, Montreal, Canada
3.6 km PM2.5: 6.2 µg/m³
26
Molson, Montreal, Canada
3.8 km PM2.5: 6.2 µg/m³
27
Molson, Montreal, Canada
3.8 km PM2.5: 6.5 µg/m³
25
Molson, Montreal, Canada
3.8 km PM2.5: 6.0 µg/m³

What cities are near Mercier–Hochelaga-Maisonneuve?

28 Saint-Léonard 33 Villeray–Saint-Michel–Parc-Extension 53 Le Vieux-Longueuil 33 Le Plateau-Mont-Royal 29 Saint-Michel 34 Rosemont–La Petite-Patrie 32 Mile End 23 Montréal-Nord 28 Montréal 31 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 2026-10-21T00:43 UTC.