Cornwall, Ontario, Canada

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

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
50 4pm
50
18
38 7pm
49
49
49 10pm
50
52
52 1am
52
59
59 4am
79
79
— 7am
—
—
— 10am
—
—
— 1pm
—
—
Station readings
18
38
CAMS model adj +25
25
25
24
24
24
24
24
25
27
27
27
34
34
54
54

Air Quality Trend (24h)

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

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
30
Cornwall, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³

Nearby Cities

28 Cornwall 12 Les Coteaux 13 Salaberry-de-Valleyfield 7 Saint-Lazare 7 Vaudreuil-Dorion 31 Clarence-Rockland 31 Orléans 31 Fallingbrook 32 Gloucester

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-26T19:40 UTC.