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Saint Catharines
St. Catharines, Niagara Regional Municipality
2026-01-01 08:00
AQI (US)
Good
Pollutants
O3
μg/m³
85.7
PM2.5
μg/m³
2
NO2
μg/m³
6.2
Weather
℃
℃
℉
-9℃
69%
43 kph
0 of 11
Historical Data
Hourly
Hourly
Daily
AQI (US)
AQI (US)
O3
PM2.5
NO2
Places included
St. Catharines
AQI 38
Data Sources
http://www.airnow.gov/
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Cities Nearby
Saint Catharines
AQI 38
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AQI 12
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Port Colborne
AQI 17
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