Pollen Count & Forecast for Welwyn Garden City
About Pollen in Welwyn Garden City
Welwyn Garden City experiences peak spring tree pollen (March-May): Birch from Parkway’s urban trees; Oak from Sherrardspark Wood and wider parkland. Summer (May-July) sees dominant grass pollen originating from local meadows, Campus West green spaces, and River Lea corridors.
WGC’s structured green spaces and tree-lined avenues concentrate airborne allergens; local geography aids widespread distribution. Late season (Sept-Nov) mould spores proliferate from damp leaf litter and decaying vegetation within local woodlands and shaded park areas.
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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