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St. Catharines

Saint Catharines, Niagara Regional Municipality

2026-07-17 11:00
AQI (India)
Very poor
Pollutants
PM2.5
μg/m³
176
NO2
μg/m³
20.5
O3
μg/m³
17.1
Weather
  • ℃
  • ℉
21℃
83%
3 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • PM2.5
  • NO2
  • O3
Data Sources
http://www.airnow.gov/

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