Pollen Count & Forecast for Vancouver

Vancouver’s spring allergy season (February–May) is dominated by Alder and Birch pollen; Red Alder (Alnus rubra) prolific in Stanley Park and Pacific Spirit Regional Park; Paper Birch (Betula papyrifera) widespread across Kitsilano streets. Bigleaf Maple (Acer macrophyllum) contributes significantly from the North Shore mountains. Summer (June–August) sees high Grass (Poaceae) pollen levels, originating from Jericho Beach and along Fraser River riverbanks.

Coastal winds and mountain barriers trap pollen, leading to localised high concentrations. Autumn and winter see elevated Mould (Cladosporium, Alternaria) spore counts, from rotting vegetation in Queen Elizabeth Park and damp urban environments.