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
43 1am
42
50
50 4am
50
43
43 7am
43
43
43 10am
43
43
40 1pm
40
40
— 4pm
—
—
— 7pm
—
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— 10pm
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Station readings
42
CAMS model adj +16
27
34
34
34
34
27
27
27
27
27
27
27
24
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
46
Cornwall, Ontario, Canada
0.0 km PM2.5: 11.0 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 2026-08-08T04:46 UTC.