Cornwall, Ontario, Canada Air Quality

Monitoring Station · Cornwall, Canada
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
46 12am
46
42
53 3am
53
53
46 6am
46
46
46 9am
46
46
46 12pm
43
43
— 3pm
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—
— 6pm
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— 9pm
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Station readings
42
CAMS model adj +19
27
27
34
34
34
34
27
27
27
27
27
27
27
24
24

Air Quality Forecast (24h)

PM2.510.1 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
38
Cornwall, Ontario, Canada
0.0 km PM2.5: 9.1 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

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 2026-08-08T03:26 UTC.