St. Catharines, Ontario, Canada

Monitoring Station · St. Catharines, Canada
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
26 8pm
38
38
38 11pm
38
58
58 2am
58
58
58 5am
58
58
58 8am
58
58
— 11am
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—
— 2pm
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— 5pm
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Station readings
26
38
CAMS model adj +4
34
34
34
34
34
54
54
54
54
54
54
54
54
54
54

Air Quality Trend (24h)

PM2.59.1 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
38
St. Catharines, Ontario, Canada
0.0 km PM2.5: 9.1 µg/m³

Nearby Cities

37 St. Catharines 37 Thorold 37 Niagara Falls 37 Niagara-on-the-Lake 37 Niagara Falls 37 Welland 8 Grand Island 36 Grimsby 11 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T23:43 UTC.