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
30 2am
37
28
30 5am
37
37
37 8am
37
37
57 11am
57
37
57 2pm
57
57
— 5pm
—
—
— 8pm
—
—
— 11pm
—
—
Station readings
28
28
CAMS model adj +3
27
34
27
27
34
34
34
34
34
54
54
34
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

26 St. Catharines 26 Thorold 26 Niagara Falls 26 Niagara-on-the-Lake 26 Niagara Falls 26 Welland 53 Grand Island 26 Grimsby 35 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-17T05:50 UTC.