St. Catharines, Ontario, Canada Air Quality

Monitoring Station · St. Catharines, Canada
1
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
0 2pm
0
0
0 5pm
6
26
26 8pm
26
26
26 11pm
6
26
26 2am
26
26
— 5am
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—
— 8am
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— 11am
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CAMS model adj -28
27
27
27
27
34
54
54
54
54
54
34
54
54
54
54

Air Quality Forecast (24h)

PM2.50.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

1
St. Catharines, Ontario, Canada
0.0 km PM2.5: 0.2 µg/m³
34
St. Catharines, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
34
St. Catharines, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
34
St. Catharines, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³

Nearby Cities

34 St. Catharines 34 Thorold 35 Niagara Falls 34 Niagara-on-the-Lake 35 Niagara Falls 34 Welland 39 Grand Island 36 Grimsby 36 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-12T17:36 UTC.