St. Catharines, Ontario, Canada

Monitoring Station · St. Catharines, Canada
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
25 1pm
25
30
25 4pm
27
27
34 7pm
34
34
34 10pm
34
34
54 1am
54
54
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Station readings
30

Air Quality Trend (24h)

PM2.57.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

30
St. Catharines, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³
33
St. Catharines, Ontario, Canada
0.0 km PM2.5: 7.9 µg/m³
30
St. Catharines, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³

Nearby Cities

30 St. Catharines 30 Thorold 27 Niagara Falls 30 Niagara-on-the-Lake 26 Niagara Falls 30 Welland 22 Grand Island 32 Grimsby 32 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T16:18 UTC.