Environmental Health


Air Quality

Toronto has taken a number of initiatives to improve the air quality and to protect your health against air pollution, which include:

  • Air Quality Health Index - new tool that measures air quality in terms of your health.
  • Information about how to protect your health from smog and air pollution.
  • Change of the idling by-law from 3 minutes to 1 minute.

Information and tools to protect your health

Air quality

What is AQHI?

The Air Quality Health Index is a public information tool that helps Canadians protect their health on a daily basis from the negative effects of air pollution.