Cornwall, Ontario, Canada

Monitoring Station · Cornwall, Canada
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
65 3am
151
65
23 6am
65
65
65 9am
65
65
65 12pm
66
66
66 3pm
66
66
— 6pm
—
—
— 9pm
—
—
— 12am
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Station readings
151
23
CAMS model adj +41
24
24
24
24
24
24
24
24
24
24
25
25
25
25
25

Air Quality Trend (24h)

PM2.55.5 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

26
Cornwall, Ontario, Canada
0.0 km PM2.5: 6.2 µg/m³
25
Cornwall, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
34
Cornwall, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
25
Cornwall, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
25
Cornwall, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
24
Cornwall, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³
23
Cornwall, Ontario, Canada
0.0 km PM2.5: 5.5 µg/m³
24
Cornwall, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³

Nearby Cities

54 Cornwall 15 Les Coteaux 15 Salaberry-de-Valleyfield 9 Saint-Lazare 9 Vaudreuil-Dorion 24 Clarence-Rockland 20 Orléans 20 Fallingbrook 20 Gloucester

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T06:59 UTC.