Pollen Count & Forecast for Winnipeg
About Pollen in Winnipeg
Winnipeg’s spring allergy season (April-June) has high levels of Manitoba Maple (Acer negundo) and Birch (Betula); these trees are common in Assiniboine Park and Kildonan Park. Oak (Quercus) and Ash (Fraxinus) contribute pollen from the Red River and Assiniboine River banks. Summer (June-August) brings high Grass (Poaceae) pollen levels; Ragweed (Ambrosia) dominates the late summer and autumn (August-October) across open prairie spaces.
Flat prairie geography and high winds transport pollen over long distances into the urban centre. Autumn has elevated Mould (Alternaria, Cladosporium) spore counts; these spores come from decaying vegetation in St. Vital Park and damp soil near the Forks.
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What Pollen Levels Mean
LOW
Symptoms are unlikely
MED
Moderate risk of symptoms
HIGH
Widespread symptoms likely
V.HI
Expect significant symptoms
X.HI
Extremely high symptom likelihood & severity