Air quality and health
Get more information on air pollutants and the impact of poor air quality on your health. Learn about the causes of poor indoor air quality, how to detect it and how to improve it.
Indoor air quality
Indoor air pollutants
Asbestos, mould, carbon monoxide, radon and other indoor air pollutants
Improve indoor air quality in your home
Sources of indoor air pollution, reduce exposure, improve ventilation
Indoor air quality resources for professionals
Residential indoor air quality guidelines, exposure limits, indoor air reference levels, guidance for non-residential (public) indoor spaces
Outdoor air quality
Outdoor air pollution and health
Health impacts of outdoor air pollution on people in Canada, health risks and effects, minimizing outdoor air pollution and its effects on health
Air Quality Health Index (AQHI)
Outdoor air quality conditions, forecasts, managing your exposure to air pollution
Wildfire smoke, air quality and your health
Symptoms, protecting your health
Outdoor air pollutants
Sulphur and nitrogen oxides, ground level ozone, and fine particulate matter
Environmental health: Air quality podcast
Health and research experts discuss air pollution and its impacts on our health.
Health-based air quality objectives (HBAQOs)
HBAQOs will identify safe exposure levels of outdoor air pollutants of concern for human health.
Stay informed
Air quality email subscription list
Sign up to receive air quality email updates.
Awareness resources
Air quality and health education resources including videos, infographics, factsheets and more.
Greater Toronto Hamilton Area Transportation Strategy
The strategy focuses on investigating the local air quality effects.
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