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St. Catharines

Saint Catharines, Niagara Regional Municipality

2026-03-09 14:00
AQI (China)
Excellent
Pollutants
O3
μg/m³
75
PM2.5
μg/m³
3
NO2
μg/m³
6.2
Weather
  • ℃
  • ℉
16℃
39%
38 kph
3 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • O3
  • PM2.5
  • NO2
Data Sources
http://www.airnow.gov/

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