Air Quality in Sainte-Catherine, Canada

Windy
19.6°C · 45.4% humidity
19.6°
Feels 19.6°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
65 12am
66
61
59 3am
61
62
63 6am
63
64
57 9am
57
58
58 12pm
56
56
56 3pm
56
56
56 6pm
56
56
58 9pm
58
56
Station readings
65
66
61
CAMS model adj +31
34
34
34
34
34
34
34
34
34
27
27
27
27
25
25
25
25
25
25
25
25
27
27
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.

45.4%
Humidity
59.0 km/h
Wind WSW
1011.0 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
15.81 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sainte-Catherine?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.515.81 µg/m³ ×1.1 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (3 stations within 25 km)
15.81
Median
15.29
Average
11.69
Low
18.18
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -8.7

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

08-03
24.8° 15.9°
08-04
29.4° 17.3°
1.69 mm
08-05
28.6° 16.2°
0.75 mm
08-06
27.6° 19.2°
1.75 mm
08-07
25.1° 15.7°
1.88 mm
08-08
25.4° 18.2°
08-09
32.2° 19.1°
0.62 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Sainte-Catherine?

20
Roberval, York, Montreal, Canada
7.2 km PM2.5: 4.8 µg/m³
34
Roberval, York, Montreal, Canada
7.2 km PM2.5: 8.2 µg/m³
38
Roberval, York, Montreal, Canada
7.2 km PM2.5: 9.1 µg/m³
68
Roberval, York, Montreal, Canada
7.2 km PM2.5: 20.2 µg/m³
26
Roberval, York, Montreal, Canada
7.2 km PM2.5: 6.2 µg/m³
36
Roberval, York, Montreal, Canada
7.2 km PM2.5: 8.6 µg/m³
19
Roberval, York, Montreal, Canada
7.2 km PM2.5: 4.6 µg/m³
25
Roberval, York, Montreal, Canada
7.2 km PM2.5: 6.0 µg/m³
38
Roberval, York, Montreal, Canada
7.2 km PM2.5: 9.1 µg/m³
45
Brossard - secteur du parc Sorbonne, Quebec, Canada
9.6 km PM2.5: 10.8 µg/m³

What cities are near Sainte-Catherine?

57 Saint-Constant 62 Desmarchais-Crawford 57 Candiac 62 Ville-Émard 62 Verdun 58 La Prairie 61 Ile-des-Soeurs 62 Saint-Henri 62 Le Sud-Ouest 61 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 2026-08-08T07:06 UTC.