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  4. Niagara Regional Municipality
  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2025-12-06 16:00
CAQI (Europe)
Medium
Pollutants
PM2.5
μg/m³
35
O3
μg/m³
51.4
NO2
μg/m³
10.3
Weather
  • ℃
  • ℉
2℃
76%
35 kph
1 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • PM2.5
  • O3
  • NO2
Places included
St. Catharines
AQI 55
Data Sources
http://www.airnow.gov/

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