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  6. Saint Catharines

Saint Catharines

St. Catharines, Niagara Regional Municipality

2025-12-29 00:00
AQI (Netherlands)
Moderate
Pollutants
NO2
μg/m³
32.9
O3
μg/m³
19.3
PM2.5
μg/m³
7
Weather
  • ℃
  • ℉
2℃
97%
24 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (Netherlands)
  • NO2
  • O3
  • PM2.5
Places included
St. Catharines
AQI 4
Data Sources
http://www.airnow.gov/

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