Air Quality in Greater Sudbury

Greater Sudbury’s current air quality is actually better than the provincial average thanks to the efforts of governments, environmental and health advocates, local industries and the community. Clean Air Sudbury's latest Air Quality Trends Report, Clearing the Air, summarizes air quality trends in Greater Sudbury.

Trend Highlights:

· Sulphur dioxide (SO2) emissions from smelters have been reduced by 93% since 1960.
· Air quality in Greater Sudbury was good or very good 94% of the time.
· Sudbury’s current air quality is better than Toronto, Hamilton and Windsor and is comparable to other cities in northern Ontario.
· Air concentrations of metals, including nickel, copper and lead, decreased

To view current levels of sulphur dioxide in community, visit the Sudbury SOAir Quality Network or the SO2 lab located at Science North. The SO2 Lab includes several interactive components that provide real-time data and information relating to the local air quality of Greater Sudbury. Visitors can learn how to measure SO2 in our air and monitor emissions. The exhibit also helps people understand why weather and air currents can affect SO2 levels. 

You can also read about the City of Greater Sudbury’s Air Quality Objectives and Accomplishments

Global Comparison: According to a 2016 World Health Organization (WHO) study on air quality, Greater Sudbury ranks 145th out of nearly 3,000 cities worldwide who monitor their PM10 and PM2.5 levels. 

Please browse our reports, presentations and FAQ section to learn more about Greater Sudbury's air quality over time and to learn how you can help keep our air clean. Also in this section is a page on Emergency Preparedness for to know what to do during events where poor air quality puts people at risk.

If there is a resource regarding air quality that you would like to see that isn’t on our website, please contact our coordinator and we will do our best to get the information you’re looking for.