Pollen Count & Forecast for Lille
About Pollen in Lille
Lille’s spring allergy season (March-May) has high Birch (Betula) and Ash (Fraxinus) pollen levels; Birch is found in Jardin Vauban; Ash is common along the Deûle River. Oak (Quercus) contributes from Parc de la Citadelle. Summer (May-July) sees elevated Grass (Poaceae) pollen; originating from Parc de la Citadelle and surrounding agricultural fields.
Urban street layouts and historic architecture can trap pollen, leading to localised high concentrations. Autumn and winter have elevated Mould (Alternaria, Cladosporium) spore counts, from damp canal banks and decomposing leaf litter in city parks.
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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