In recent years, Canadians have been subjected to both severe wildfire smoke and extreme heat events, as evidenced by the record-breaking 2023 wildfire season and the 2021 heat dome. Western Canada in particular has a long history of wildfires and heat waves, and with climate change, communities have experienced an increasing number of days per year affected by wildfire smoke or extreme temperatures.
It’s well understood that exposure to either wildfire smoke or extreme heat poses a significant threat to health. For example, there is substantial evidence linking wildfire smoke to an increased risk of hospitalizations for lung or heart complications, with emerging evidence that exposure may also affect birth outcomes and cognitive function. Similarly, we know that extreme heat can increase the risk of illness or death from conditions related to our lungs, hearts and brains.
