St. Catharines, Ontario, Canada Air Quality

Monitoring Station · St. Catharines, Canada
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
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AQI Forecast
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Air Quality Forecast (24h)

PM2.55.5 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

34
St. Catharines, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
17
St. Catharines, Ontario, Canada
0.0 km PM2.5: 4.1 µg/m³
23
St. Catharines, Ontario, Canada
0.0 km PM2.5: 5.5 µg/m³
23
St. Catharines, Ontario, Canada
0.0 km PM2.5: 5.5 µg/m³
25
St. Catharines, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³

Nearby Cities

20 St. Catharines 20 Thorold 16 Niagara Falls 20 Niagara-on-the-Lake 15 Niagara Falls 20 Welland 10 Grand Island 20 Grimsby 28 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-10-21T01:06 UTC.