Prepare for extreme heat

Extreme heat events are a major health risk to people who live in Canada and can result in preventable illness and death, especially among vulnerable groups such as older adults, infants and young children, and people with chronic illnesses. Extreme heat events also place stress on important systems like health care, transportation, agriculture, and infrastructure. Extreme heat increases the risk of other hazards such as drought, flooding, poor air quality and wildfires. First Nations, Inuit and Métis hunting and fishing grounds have been impacted by extreme heat events.

Why prepare for extreme heat

Extreme heat is an issue that impacts the lives of all people who live in Canada. For example, in 2021, Canada experienced an unprecedented extreme heat event that resulted in at least 619 deaths in British Columbia, making it one of the deadliest reported weather-related events in Canadian history. The increasing frequency and severity of climate-driven hazards, like extreme heat events, pose health threats to people who live in Canada now and in the future.

What to do

Before extreme heat

Be sure to prepare yourself and educate your household in the event of extreme heat.

During extreme heat

Find out what to do if extreme heat is forecast for your region.

After extreme heat

Watch for signs of illness following an extreme heat event.

Where to start

You can protect members of your household and your residence by learning more about extreme heat, and by taking proper precautions. Make sure that your household is prepared.


Extreme heat events overview

Learn more about extreme heat in Canada.

Health effects of extreme heat

Learn about heat related illnesses.

Health in a changing climate

Learn how people who live in Canada are being affected.

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