Air Quality in Saint-Constant, Canada

Windy
19.6°C · 45.4% humidity
19.6°
Feels 19.6°
57
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
55 4pm
57
59
57 7pm
57
59
59 10pm
59
59
59 1am
59
59
59 4am
59
59
59 7am
59
57
57 10am
57
57
57 1pm
56
56
Station readings
55
57
59
CAMS model adj +32
25
25
25
25
25
27
27
27
27
27
27
27
27
27
27
27
27
25
25
25
25
25
24
24
AD 728×90

Air Quality Index Trend

47h · 3 stn

Saint-Constant'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 Saint-Constant is 1.0× 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▲
57
15.14 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint-Constant?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.515.14 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (3 stations within 25 km)
15.14
Median
15.29
Average
11.69
Low
18.18
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -8.0

What is the 7-day forecast for Saint-Constant?

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 Saint-Constant?

33
Roberval, York, Montreal, Canada
11.0 km PM2.5: 7.9 µg/m³
26
Roberval, York, Montreal, Canada
11.0 km PM2.5: 6.2 µg/m³
38
Roberval, York, Montreal, Canada
11.0 km PM2.5: 9.1 µg/m³
49
Roberval, York, Montreal, Canada
11.0 km PM2.5: 11.8 µg/m³
68
Roberval, York, Montreal, Canada
11.0 km PM2.5: 20.2 µg/m³
20
Roberval, York, Montreal, Canada
11.0 km PM2.5: 4.8 µg/m³
33
Roberval, York, Montreal, Canada
11.0 km PM2.5: 7.9 µg/m³
19
Roberval, York, Montreal, Canada
11.0 km PM2.5: 4.6 µg/m³
47
Roberval, York, Montreal, Canada
11.0 km PM2.5: 11.3 µg/m³
29
Roberval, York, Montreal, Canada
11.0 km PM2.5: 7.0 µg/m³

What cities are near Saint-Constant?

59 Sainte-Catherine 57 Candiac 58 La Prairie 62 Desmarchais-Crawford 62 Ville-Émard 62 Verdun 61 Ile-des-Soeurs 62 Saint-Henri 62 Le Sud-Ouest 59 Brossard
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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 2026-08-07T23:46 UTC.