Pollen Count & Forecast for Groningen
About Pollen in Groningen
Groningen’s spring allergy season (March-May) is dominated by Birch and Alder pollen; Birch (Betula) common in Noorderplantsoen and Stadspark; Alder (Alnus) widespread along the Reitdiep and Diepenring canals. Oak (Quercus) has high counts in the Sterrebos and southern wooded areas. Summer (May-July) has high Grass (Poaceae) pollen levels, originating from Hoornsemeer polders and Reitdiep riverbanks.
Open polders and flat terrain allow wind to transport pollen into the city; coastal breezes from the Wadden Sea influence dispersal patterns. Autumn and winter have high Mould (Alternaria, Cladosporium) spore counts, from decaying leaf litter in parklands and damp city outskirts.
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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