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  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2026-09-07 04:00
CAQI (Europe)
Very Low
Pollutants
PM2.5
μg/m³
12
NO2
μg/m³
20.5
O3
μg/m³
2.1
Weather
  • ℃
  • ℉
14℃
97%
4 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • PM2.5
  • NO2
  • O3
Places included
St. Catharines
AQI 20
Data Sources
http://www.airnow.gov/

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