Pollen Count & Forecast for Milwaukee

Milwaukee’s spring allergy season (April–June) is dominated by Maple and Oak pollen; Maple (Acer) common along the Milwaukee River and Menomonee River; Oak (Quercus) widespread throughout Lake Park and Whitnall Park. Birch (Betula) is significant in older residential neighborhoods. Summer (June–August) has high Grass (Poaceae) pollen levels, originating from the Menomonee Valley and Lake Michigan parks.

Proximity to Lake Michigan creates lake breezes; these winds push pollen inland or trap it near the shoreline. Autumn and winter have elevated Mould (Alternaria, Cladosporium) spore counts, from decaying leaves in the Kinnickinnic River valley and Mitchell Park.