Cornwall, Ontario, Canada Air Quality

Monitoring Station · Cornwall, Canada
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
42 12am
38
49
49 3am
49
49
42 6am
42
42
42 9am
42
42
42 12pm
39
39
— 3pm
—
—
— 6pm
—
—
— 9pm
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Station readings
38
CAMS model adj +15
27
27
34
34
34
34
27
27
27
27
27
27
27
24
24

Air Quality Forecast (24h)

PM2.59.1 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

51
Cornwall, Ontario, Canada
0.0 km PM2.5: 12.1 µg/m³
46
Cornwall, Ontario, Canada
0.0 km PM2.5: 11.0 µg/m³
33
Cornwall, Ontario, Canada
0.0 km PM2.5: 7.9 µg/m³
33
Cornwall, Ontario, Canada
0.0 km PM2.5: 7.9 µg/m³
34
Cornwall, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
34
Cornwall, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
42
Cornwall, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³

Nearby Cities

32 Cornwall 82 Les Coteaux 82 Salaberry-de-Valleyfield 82 Saint-Lazare 82 Vaudreuil-Dorion 40 Clarence-Rockland 49 Orléans 50 Fallingbrook 47 Gloucester

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T03:24 UTC.