Air Quality in Sainte-Catherine, Canada

Cloudy
14.6°C · 88.6% humidity
14.6°
Feels 14.6°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
21 5am
21
21
17 8am
21
21
21 11am
21
21
21 2pm
21
21
21 5pm
21
21
21 8pm
21
21
21 11pm
22
22
22 2am
22
22
Station readings
18
15
CAMS model adj -3
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
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
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
17
4.06 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
PM2.54.06 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (4 stations within 25 km)
4.06
Median
5.54
Average
3.86
Low
7.7
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +1.7

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: 4.5°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
17
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 4.1 µg/m³
38
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 9.1 µg/m³
24
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 5.8 µg/m³
16
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.8 µg/m³
14
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.4 µg/m³
32
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 7.7 µg/m³
14
Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada
3.0 km PM2.5: 3.4 µg/m³
13
Bécancour - secteur de l'hôtel de ville, Quebec, Canada
3.3 km PM2.5: 3.1 µg/m³
17
Bécancour - secteur de l'hôtel de ville, Quebec, Canada
3.3 km PM2.5: 4.1 µg/m³

What cities are near Sainte-Catherine?

19 Trois-Rivières 33 Shawinigan 12 Drummondville 15 Sorel-Tracy 6 Victoriaville 15 Joliette 20 Saint-Charles-Borromée 16 Saint-Hyacinthe 15 L'Assomption 15 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 2026-09-05T12:12 UTC.