St. Catharines, Ontario, Canada Air Quality

Monitoring Station · St. Catharines, Canada
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
32 6pm
21
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26 9pm
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Station readings
32
21
26

Air Quality Forecast (24h)

PM2.56.2 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
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
22
St. Catharines, Ontario, Canada
0.0 km PM2.5: 5.3 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

24 St. Catharines 24 Thorold 24 Niagara Falls 24 Niagara-on-the-Lake 24 Niagara Falls 24 Welland 13 Grand Island 23 Grimsby 13 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-10-20T21:47 UTC.