Pollen Count & Forecast for Sofia
About Pollen in Sofia
Sofia’s spring allergy season (March-May) is dominated by Birch and Poplar pollen; Birch (Betula) prolific in Borisova Gradina and South Park; Poplar (Populus) widespread along the Iskar River. Willow (Salix) contributes significantly from the Vitosha Mountain foothills. Summer (May-August) has high Grass (Poaceae) and Ragweed (Ambrosia) pollen levels, originating from the Sofia Valley fields and West Park.
The city’s basin position and frequent temperature inversions trap allergens, leading to high ground-level concentrations. Autumn and winter have high Mould (Alternaria, Cladosporium) spore counts, from decomposing leaf litter in North Park and damp city environments.
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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