St. Catharines, Ontario, Canada

Monitoring Station · St. Catharines, Canada
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
37 6am
25
25
22 9am
37
37
37 12pm
37
37
37 3pm
37
50
75 6pm
75
—
— 9pm
—
—
— 12am
—
—
— 3am
—
—

Air Quality Trend (24h)

Nearby Monitoring Stations

34
St. Catharines, Ontario, Canada
0.0 km

Nearby Cities

11 St. Catharines 11 Thorold 11 Niagara Falls 10 Niagara-on-the-Lake 11 Niagara Falls 5 Welland 11 Grand Island 11 Grimsby 5 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-10T09:28 UTC.