St. Catharines, Ontario, Canada Air Quality

Monitoring Station · St. Catharines, Canada
8
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
88 11pm
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88 11am
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95
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CAMS model adj +61
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34

Air Quality Forecast (24h)

PM2.51.9 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

63
St. Catharines, Ontario, Canada
0.0 km PM2.5: 17.8 µg/m³

Nearby Cities

22 St. Catharines 22 Thorold 21 Niagara Falls 22 Niagara-on-the-Lake 21 Niagara Falls 22 Welland 23 Grand Island 30 Grimsby 39 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T02:19 UTC.