St. Catharines, Ontario, Canada

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

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
47 7pm
47
47
38 10pm
47
47
40 1am
47
47
47 4am
67
67
47 7am
47
67
— 10am
—
—
— 1pm
—
—
— 4pm
—
—
Station readings
38
CAMS model adj +13
34
34
34
54
34
34
27
34
34
34
54
54
34
34
54

Air Quality Trend (24h)

PM2.59.1 µg/m³ ✓ WHO
Good
View city history →

Nearby Monitoring Stations

38
St. Catharines, Ontario, Canada
0.0 km PM2.5: 9.1 µg/m³

Nearby Cities

38 St. Catharines 38 Thorold 38 Niagara Falls 38 Niagara-on-the-Lake 38 Niagara Falls 38 Welland 17 Grand Island 45 Grimsby 31 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T22:58 UTC.