Study Estimates 2023 Canadian Wildfire Smoke Caused More Than 80,000 Deaths Globally
In 2023, Canada experienced its worst wildfire season on record, with more than 6,000 fires burning nearly 150,000 square kilometres of land. The impacts went far beyond the forests—smoke from these fires spread across North America and even reached Europe, carrying dangerous fine particulate matter (PM2.5) that contributed to severe health consequences worldwide.
A peer-reviewed study published in Nature estimates that Canadian wildfire smoke caused 5,400 acute deaths and approximately 82,100 premature deaths globally in 2023. Of these, 8,300 deaths occurred in Canada and more than 33,000 in the United States, showing that wildfire smoke doesn’t just affect communities near the fires—it impacts populations far downwind.
Researchers warn that wildfire smoke is especially harmful to individuals with pre-existing conditions such as asthma, COPD, or cardiovascular disease. The smoke can worsen breathing problems, strain the heart, and contribute to premature death. The period between June 26 and July 7, 2023, was particularly hazardous, linked to thousands of acute deaths in Canada and the U.S.
As climate change drives longer and more intense wildfire seasons, experts say these health risks will become increasingly common. Canadian co-author Dr. Michael Brauer, from the University of British Columbia, calls the findings a “wake-up call”—reminding us that even regions not used to heavy smoke will need to prepare for future exposure.
What This Means for Travellers
At Destinations Travel & Immunization Clinic, we remind our patients that air quality is a critical part of travel health planning. Wildfire smoke can affect major cities, airports, and rural destinations alike. Before travelling, it’s important to:
- Check the Air Quality Health Index (AQHI) at your destination.
- Pack protective masks (N95 or KN95) if wildfire smoke is a possibility.
- Protect vulnerable travellers—children, older adults, and those with chronic health conditions are at higher risk.
- Plan medications accordingly—ensure you have enough asthma inhalers, heart medications, or other prescriptions before you leave.
Because your health doesn’t take a vacation—even when you do.
If you’re planning a trip during wildfire season or to areas with poor air quality, book a consultation at Destinations Travel & Immunization Clinic. Our physicians and pharmacists will help you assess risks, prepare with protective strategies, and keep your health protected wherever you travel.
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Disclaimer: The medical information on this site is provided as an information resource only and is not to be used or relied upon for any diagnostic or treatment purposes. This information does not substitute for professional diagnosis and treatment. Please do not initiate, modify, or discontinue any treatment, medication, or supplement solely based on this information. Always seek the advice of your healthcare provider first. Full Disclaimer.
