Air Quality in Sainte-Catherine, Canada

Clear
26.5°C · 43.8% humidity
26.5°
Feels 26.5°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
80 1pm
81
68
61 4pm
65
68
70 7pm
72
66
67 10pm
68
66
66 1am
66
67
66 4am
66
66
66 7am
66
66
66 10am
66
67
Station readings
80
81
68
CAMS model adj +42
34
34
34
34
34
34
34
34
27
27
27
25
25
25
25
24
24
24
24
24
24
24
24
25
AD 728×90

Air Quality Index Trend

47h · 3 stn

Sainte-Catherine'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 Sainte-Catherine is 1.1× the WHO 24-hour guideline of 15 µg/m³.

43.8%
Humidity
37.8 km/h
Wind ENE
1015.4 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
61
16.93 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Sainte-Catherine?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.516.93 µg/m³ ×1.1 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (6 stations within 25 km)
16.93
Median
18.4
Average
11.8
Low
26.33
High
PM2.5 µg/m³ · Model: 13.7 · Bias: -3.2

What is the 7-day forecast for Sainte-Catherine?

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: 2.3°C

Where are air quality stations near Sainte-Catherine?

25
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
10.1 km PM2.5: 6.0 µg/m³
24
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
10.1 km PM2.5: 5.8 µg/m³
193
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
10.1 km PM2.5: 136.8 µg/m³
132
Longueuil - secteur du parc Océanie (Brossard), Quebec, Canada
10.1 km PM2.5: 48.1 µg/m³
40
Montreal
12.3 km PM2.5: 9.6 µg/m³
53
Montreal
12.3 km PM2.5: 13.1 µg/m³
25
Montreal
12.3 km PM2.5: 6.0 µg/m³
40
Montreal
12.3 km PM2.5: 9.6 µg/m³
–
canada-montreal-rue-leclaire
17.7 km PM2.5: 0.0 µg/m³
71
canada-montreal-rue-ida-steinberg
18.3 km PM2.5: 21.8 µg/m³

What cities are near Sainte-Catherine?

62 Saint-Constant 59 Desmarchais-Crawford 61 Candiac 60 Ville-Émard 58 Verdun 61 La Prairie 59 Ile-des-Soeurs 59 Saint-Henri 58 Le Sud-Ouest 59 Notre-Dame-de-Grâce
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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 2026-07-21T20:12 UTC.