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Welcome to the Clean Air Sarnia and Area website! This site provides the public with real-time data about air quality in the Sarnia area.

The site shows real-time air monitoring readings from seven monitoring stations operated by the Ministry of the Environment, Conservation and Parks, the Aamjiwnaang First Nation, and the Sarnia-Lambton Environmental Association.

This site is designed as a tool to provide the community with a clear understanding of ambient air quality in the Sarnia area, and how air quality compares to Ontario's standards.

Resources are provided to help the community understand the science of air quality and how air monitoring systems work.

We invite you to explore the data and resources provided to learn more about air quality in the Sarnia area, and how you can become involved with the Clean Air Sarnia and Area initiative.

Watch Video Tutorials!

Learn how to check the real-time air monitoring data from the Clean Air Sarnia and Area (CASA) website or how to look up and download air monitoring data from a previous time period.

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What's New!

  Non-Continuous Reporting Updated

Updated data has been posted to the Non-Continuous Reporting page, including 2018 VOC results from Front Street and River Bend, and 2018 TSP and Metals results from Front Street an...

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CASA was formed in September 2015, and works to improve air quality in the Sarnia area by:

  • Sharing information about ambient air quality
  • Identifying and researching local air quality issues
  • Providing recommendations and information to the Ministry of the Environment, Conservation and Parks and the Sarnia-Lambton Environmental Association
  • Educating the public about local air quality

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Working towards improving Sarnia's air quality!