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Air Quality Health Index

The Air Quality Health Index (AQHI) helps you understand what the air quality around you means to your health.

The AQHI is a tool that relates the air quality outside to your health, using a scale from 1 to 10. The lower the number, the lower the risk.

Air Quality Health Index colour scale; 1 to 3, Low Risk; 4 to 6, Moderate Risk; 7 to 10, High Risk; 10+, Very High Risk

Learn More About AQHI

Child flying a kite

About the AQHI

Learn more about the Air Quality Health Index, and how you can use it to determine your level of health risk on a given day.

Picture of girl on soccer field with inhaler

Air Quality and Health

Discover the impact of air pollutants on human health, and what you can do to protect yourself and reduce air pollution.

Children playing soccer

AQHI Resources

Access AQHI applications, educational and media resources, videos and more!


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Updated: Apr 17, 2018