St. Catharines, Ontario, Canada

Monitoring Station · St. Catharines, Canada
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
44 3am
28
37
28 6am
44
44
44 9am
44
64
64 12pm
44
64
64 3pm
64
64
— 6pm
—
—
— 9pm
—
—
— 12am
—
—
Station readings
28
28
CAMS model adj +10
34
27
27
34
34
34
34
34
54
54
34
54
54
54
54

Air Quality Trend (24h)

PM2.56.7 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

26
St. Catharines, Ontario, Canada
0.0 km PM2.5: 6.2 µg/m³

Nearby Cities

27 St. Catharines 27 Thorold 27 Niagara Falls 27 Niagara-on-the-Lake 27 Niagara Falls 27 Welland 23 Grand Island 25 Grimsby 35 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-17T06:14 UTC.