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  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2026-01-01 21:00
AQI (US)
Good
Pollutants
O3
μg/m³
79.3
PM2.5
μg/m³
3
NO2
μg/m³
6.2
Weather
  • ℃
  • ℉
-8℃
58%
35 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • O3
  • PM2.5
  • NO2
Places included
St. Catharines
AQI 35
Data Sources
http://www.airnow.gov/

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Cities Nearby

Saint Catharines
AQI 35
Thorold
AQI 17
Niagara Falls
AQI 17
Lewiston
AQI 17
Niagara-on-the-Lake
AQI 17
Niagara Falls
AQI 17
Welland
AQI 17
Youngstown
AQI 17
Lincoln
AQI 17
Ransomville
AQI 17
Port Colborne
AQI 17