Air Quality in Sainte-Catherine, Canada

Windy
16.0°C · 60.1% humidity
16.0°
Feels 16.0°
66
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
66 8pm
66
66
66 11pm
68
68
75 2am
75
95
95 5am
95
95
95 8am
65
66
65 11am
65
65
65 2pm
66
66
66 5pm
66
66
Station readings
84
CAMS model adj +41
25
25
25
27
27
27
34
34
54
54
54
54
54
24
25
24
24
24
24
25
25
25
25
25
AD 728×90

Air Quality Index Trend

19h · 1 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 1.3× the WHO 24-hour guideline of 15 µg/m³.

60.1%
Humidity
50.9 km/h
Wind W
1010.4 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
66
19.45 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sainte-Catherine?

Temperature & Precipitation

PM2.5 Trend

19h · 1 station
PM2.519.45 µg/m³ ×1.3 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (1 station within 25 km)
19.45
Median
19.45
Average
19.45
Low
19.45
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -13.2

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

08-03
22.0° 15.5°
08-04
27.5° 15.5°
2.31 mm
08-05
24.3° 15.8°
9.06 mm
08-06
26.1° 17.4°
6.0 mm
08-07
19.9° 13.5°
7.75 mm
08-08
24.9° 13.0°
5.31 mm
08-09
31.2° 17.1°
0.5 mm
Both models agree Avg diff: 4.0°C

Where are air quality stations near Sainte-Catherine?

84
canada-trois-rivières-notre-dame-rue-o
0.7 km PM2.5: 28.0 µg/m³
49
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 11.8 µg/m³
37
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 8.9 µg/m³
55
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 14.0 µg/m³
46
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 11.0 µg/m³
29
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 7.0 µg/m³
46
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 11.0 µg/m³
60
Trois-Rivières
3.3 km PM2.5: 16.4 µg/m³
25
Bécancour - secteur de l'hôtel de ville, Quebec, Canada
3.3 km PM2.5: 6.0 µg/m³
119
Bécancour - secteur de l'hôtel de ville, Quebec, Canada
3.3 km PM2.5: 42.8 µg/m³

What cities are near Sainte-Catherine?

66 Trois-Rivières 26 Shawinigan 52 Drummondville 30 Sorel-Tracy 53 Victoriaville 26 Joliette 39 Saint-Charles-Borromée 42 Saint-Hyacinthe 30 L'Assomption 64 Repentigny
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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 2026-08-08T03:27 UTC.