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  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2025-12-30 09:00
AQI (Netherlands)
Moderate
Pollutants
O3
μg/m³
79.3
NO2
μg/m³
4.1
PM2.5
μg/m³
1
Weather
  • ℃
  • ℉
-5℃
69%
57 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (Netherlands)
  • O3
  • NO2
  • PM2.5
Places included
St. Catharines
AQI 5
Data Sources
http://www.airnow.gov/

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