Cornwall, Ontario, Canada Air Quality

Monitoring Station · Cornwall, Canada
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
50 10pm
50
52
52 1am
59
59
59 4am
59
52
52 7am
52
52
52 10am
52
52
— 1pm
—
—
— 4pm
—
—
— 7pm
—
—
CAMS model adj +25
25
25
27
27
34
34
34
34
27
27
27
27
27
27
27

Air Quality Forecast (24h)

PM2.57.7 µg/m³ ✓ WHO
Good
View city history →

Nearby Monitoring Stations

51
Cornwall, Ontario, Canada
0.0 km PM2.5: 12.1 µg/m³
32
Cornwall, Ontario, Canada
0.0 km PM2.5: 7.7 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
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 2026-08-08T01:31 UTC.