Health · CBC Explains

Seasonal allergies are getting worse in Canada, with longer and stronger pollen seasons, largely thanks to climate change. Here's a primer on the hardest-hit cities, the latest science and what treatments can help you survive another allergen-filled spring and summer.

Which cities are Canada’s allergy hot spots? And what treatments really work? Here's the latest on how to cope

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A garden in bloom in April 2026 in Vancouver, one of Canada's seasonal allergy hot spots. Scientists say allergy seasons are getting longer and more intense, largely thanks to climate change. (Ben Nelms/CBC)

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