Toronto North: Hourly Sulphur Dioxide SO2 Concentrations

From March 2, 2024 EST to March 4, 2024 EST.


  • Ontario 1-hour Ambient Air Quality Criterion (AAQC) for SO2 = 40 ppb.
  • The pollutant concentrations on this web page are based on automatically polled data and have not undergone final verification.

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