Healthy places Air Quality Air Quality Health Index

Air Quality Health Index

Ontario's Air Quality Health Index (AQHI) is a new health based scale that assesses air pollution as well as cumulative health impacts.


The AQHI provides air quality measurements and forecasts so members of the public can more easily understand what the quality of the air around them means to their health. The index ranks air quality from 1 to 10+, just like the UV index protects people from the harmful effects of too much sun. The lower the number, the lower the risk.




Click here to view the current Air Quality Health Index forecast for communities across Ontario.The Air Quality Health Index does not list forecasts for Oxford County. Refer to the London or Kitchener forecast for the most accurate forecast for our area.



For a more detailed explanation of the new AQHI, watch this video from the Ministry of Environment and Climate Change.



The index is designed to help them make decisions to protect their health during episodes of increased air pollution.


When the Air Quality Health Index reading rises, people can:

  • Reduce or reschedule outdoor physical activities
  • Monitor possible symptoms, such as difficulty breathing, coughing or irritated eyes
  • Follow their doctor's advice to manage existing conditions such as asthma
  • Do their part by taking public transit