Clean Air Day in Canada

Since 1999, Canada has marked the first Wednesday in June as Clean Air Day. On June 3, 2026, take time to reflect on the importance of clean air for our health, our environment, and our daily lives.

While air quality in Canada is relatively good compared to many parts of the world, it can still affect your health.

That is why Canada is continuing to take action to reduce air pollution and greenhouse gas emissions to protect the environment and human health. 

Air pollution in Canada comes from several sources. Human-caused sources include burning fossil fuels for transportation, electricity use and industrial processes.

Natural sources of air pollution, such as wildfires, dust and pollen, are becoming more of a concern due to climate change. Wildfire smoke contains many harmful air pollutants, resulting in poor air quality locally and thousands of kilometres away.

Air pollution harms wildlife, vegetation, and crops, and erodes buildings. It also contributes to other environmental issues, such as biodiversity loss and climate change.

Air pollution can lead to heart and lung diseases, stroke, cancer, and premature death. There is no safe level of exposure to many air pollutants. Some people, including people aged 65 or older, children, and those with pre-existing health conditions are more at risk of experiencing health effects.

In Canada, air pollution contributes to more than 17,000 deaths each year, with estimated costs of $146 billion annually.

Clean Air Day activities

Find resources, ideas, and ways to get involved in communities across Canada:

Watch and read

Study of Winter Air Pollution in Toronto - Canadian Geographic

This story highlights the study of air pollutants in winter found at monitoring sites throughout Toronto, Ontario. This research led by Environment and Climate Change Canada’s scientists can help us find solutions to reduce air pollution in cities across Canada.

Deep Breath, Deep Dive: Air Quality and Your Health

Learn how air quality can affect our health and what we can do about it.

Learn

Air pollution and air quality in Canada

Learn about Canada’s air quality and sources of air pollution.

Air quality and health

Learn about the effects of air pollution on your health and how to protect yourself.

Indoor air quality

Find out how you can make the air inside your home safer to breathe.

Government of Canada actions to reduce air pollution

Find out how we’re keeping the air clean through research, regulations, investments and international agreements.

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2026-06-02