Ottawa Downtown: Hourly Fine Particulate Matter PM2.5 Concentrations

From June 5, 2023 EDT to June 7, 2023 EDT.

Notes:

  • Effective January 1, 2013, the PM2.5 monitoring method was changed in Ontario. For more information, visit Frequently Asked Questions.
  • The pollutant concentrations on this web page are based on automatically polled data and have not undergone final verification.

Show as Chart

Choose Station Arrow

Ottawa Downtown Open/Close Menu Arrow

Air Quality Ontario: Home Page

Explore GovernmentOpen/Close Government Menu Arrow

Contacts Open/Close Contact Menu Arrow