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St. Catharines

Saint Catharines, Niagara Regional Municipality

2025-12-10 21:00
AQI (UK)
Low
Pollutants
O3
μg/m³
27.9
PM2.5
μg/m³
4
NO2
μg/m³
22.6
Weather
  • ℃
  • ℉
1℃
97%
44 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (UK)
  • O3
  • PM2.5
  • NO2
Data Sources
http://www.airnow.gov/

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