Air Quality in Sainte-Catherine, Canada

Cloudy
14.6°C · 88.6% humidity
14.6°
Feels 14.6°
15
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
21 6am
21
21
15 9am
17
18
19 12pm
19
20
20 3pm
20
21
21 6pm
21
21
21 9pm
21
21
22 12am
22
22
22 3am
22
22
Station readings
15
CAMS model adj -3
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
25
25
25
25
25
25
AD 728×90

Air Quality Index Trend

17h · 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.

88.6%
Humidity
33.7 km/h
Wind N
1010.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
15
3.5 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Sainte-Catherine?

Temperature & Precipitation

PM2.5 Trend

17h · 1 station
PM2.53.5 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (2 stations within 25 km)
3.5
Median
4.84
Average
3.48
Low
6.2
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +2.3

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

09-05
24.8° 13.1°
1.81 mm
09-06
21.8° 11.6°
18.94 mm
09-07
20.0° 11.6°
09-08
17.8° 11.6°
4.06 mm
09-09
21.8° 10.4°
0.06 mm
09-10
19.4° 9.9°
11.31 mm
09-11
24.2° 10.5°
0.19 mm
Both models agree Avg diff: 4.7°C

Where are air quality stations near Sainte-Catherine?

15
canada-trois-rivières-notre-dame-rue-o
0.7 km PM2.5: 3.5 µg/m³
14
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.4 µg/m³
38
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 9.1 µg/m³
17
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 4.1 µg/m³
32
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 7.7 µg/m³
16
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.8 µg/m³
24
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 5.8 µg/m³
14
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.4 µg/m³
16
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.8 µg/m³
27
Trois-Rivières
3.3 km PM2.5: 6.5 µg/m³

What cities are near Sainte-Catherine?

18 Trois-Rivières 25 Shawinigan 20 Drummondville 24 Sorel-Tracy 5 Victoriaville 24 Joliette 19 Saint-Charles-Borromée 12 Saint-Hyacinthe 15 L'Assomption 17 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 2026-09-05T13:05 UTC.