What is the air quality in Sainte-Catherine today?

The current Air Quality Index (AQI) in Sainte-Catherine is 5 (Good). PM2.5 concentration is 1.2 µg/m³.

What is the temperature in Sainte-Catherine right now?

The current temperature in Sainte-Catherine is 1.0°C (feels like -4.9°C). Humidity is 51.6% and wind speed is 26.5 km/h.

Is it safe to go outside in Sainte-Catherine?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Sainte-Catherine, Canada

Partly Cloudy

1.0°C · 51.6% humidity

1.0°

Feels -4.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

5 stations

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

30h · 1 stn

View full history →

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.

51.6%

Humidity

26.5 km/h

Wind SSW

1029.3 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

1.2 µg/m³

PM10▲

27.4 µg/m³

050100150200300500

What is the weather forecast for Sainte-Catherine?

Temperature & Precipitation

PM2.5 Trend

30h · 1 station

PM2.51.2 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (5 stations within 25 km)

1.2

Median

4.15

Average

0.73

Low

5.8

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +12.3

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

10-20

6.7° 0.8°

1.06 mm

10-21

11.2° 1.0°

10-22

10.9° 1.7°

11.19 mm

10-23

13.8° 4.7°

0.31 mm

10-24

13.3° 3.4°

0.5 mm

10-25

17.1° 2.1°

7.19 mm

10-26

7.2° 3.4°

6.75 mm

Both models agree Avg diff: 4.4°C

Where are air quality stations near Sainte-Catherine?

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canada-trois-rivières-notre-dame-rue-o

0.7 km PM2.5: 0.1 µg/m³

Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada

3.0 km PM2.5: 4.6 µg/m³

Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada

3.0 km PM2.5: 4.6 µg/m³

Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada

3.0 km PM2.5: 7.2 µg/m³

Trois-Rivières - secteur du Vieux-Trois-Rivières, Quebec, Canada

3.0 km PM2.5: 5.3 µg/m³

Bécancour - secteur de l'hôtel de ville, Quebec, Canada

3.3 km PM2.5: 4.8 µg/m³

Bécancour - secteur de l'hôtel de ville, Quebec, Canada

3.3 km PM2.5: 4.8 µg/m³

Bécancour - secteur de l'hôtel de ville, Quebec, Canada

3.3 km PM2.5: 7.2 µg/m³

Trois-Rivières - secteur du sanctuaire, Quebec, Canada

7.7 km PM2.5: 4.6 µg/m³

Trois-Rivières - secteur du sanctuaire, Quebec, Canada

7.7 km PM2.5: 3.4 µg/m³

What cities are near Sainte-Catherine?

24 Trois-Rivières 23 Shawinigan 12 Drummondville 20 Sorel-Tracy 8 Victoriaville 20 Joliette 17 Saint-Charles-Borromée 22 Saint-Hyacinthe 28 L'Assomption 27 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 2026-10-20T22:43 UTC.