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  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2026-01-19 17:00
AQI (US)
Good
Pollutants
PM2.5
μg/m³
6
O3
μg/m³
57.9
NO2
μg/m³
6.2
Weather
  • ℃
  • ℉
-6℃
70%
35 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • PM2.5
  • O3
  • NO2
Places included
St. Catharines
AQI 34
Data Sources
http://www.airnow.gov/

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Cities Nearby

Saint Catharines
AQI 34
Thorold
AQI 34
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Niagara Falls
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Welland
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Youngstown
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Lincoln
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Ransomville
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Port Colborne
AQI 38