Pollen Count & Forecast for Dortmund
About Pollen in Dortmund
Dortmund’s spring allergy season (February-May) is dominated by Birch and Alder pollen; Birch (Betula) prolific in Westfalenpark and Rombergpark; Alder (Alnus) widespread along Emscher and Ruhr riverbanks. Hazel (Corylus) contributes significantly from the Ardey Hills. Summer (May-July) has high Grass (Poaceae) pollen levels, originating from Revierpark Wischlingen and Phönix-See green belts.
The Ardey Hills trap pollen in southern urban districts; north-westerly winds push particles into the city center. Autumn and winter have high Mould (Alternaria, Cladosporium) counts; spores rise from decomposing leaf litter in the Bittermark forest and damp parkland soils.
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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