Cornwall, Ontario, Canada Air Quality

Monitoring Station · Cornwall, Canada
50
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
65 10pm
55
50
63 1am
63
63
63 4am
63
63
63 7am
63
63
63 10am
63
65
— 1pm
—
—
— 4pm
—
—
— 7pm
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Station readings
55
50
CAMS model adj +38
27
27
25
25
25
25
25
25
25
25
25
25
25
25
27

Air Quality Forecast (24h)

PM2.512.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

25
Cornwall, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
21
Cornwall, Ontario, Canada
0.0 km PM2.5: 5.0 µg/m³
17
Cornwall, Ontario, Canada
0.0 km PM2.5: 4.1 µg/m³

Nearby Cities

21 Cornwall 24 Les Coteaux 24 Salaberry-de-Valleyfield 22 Saint-Lazare 26 Vaudreuil-Dorion 23 Clarence-Rockland 24 Orléans 23 Fallingbrook 24 Gloucester

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-11T01:11 UTC.