St. Catharines, Ontario, Canada Air Quality

Monitoring Station · St. Catharines, Canada
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
32 4pm
38
25
32 7pm
30
30
30 10pm
30
30
30 1am
30
32
30 4am
30
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Station readings
38
25
CAMS model adj +5
27
27
34
27
25
25
25
25
25
25
25
27
25
25

Air Quality Forecast (24h)

PM2.56.0 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
25
St. Catharines, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
21
St. Catharines, Ontario, Canada
0.0 km PM2.5: 5.0 µg/m³
30
St. Catharines, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³

Nearby Cities

22 St. Catharines 22 Thorold 22 Niagara Falls 22 Niagara-on-the-Lake 22 Niagara Falls 22 Welland 21 Grand Island 21 Grimsby 31 Port Colborne

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-09T19:01 UTC.