Pollen Count & Forecast for Vienna

Vienna’s spring allergy season (February-May) is dominated by Hazel and Birch pollen; Birch (Betula) is in the Prater and Schönbrunn gardens; Hazel (Corylus) is in the Wienerwald. Ash (Fraxinus) contributes from trees along the Donauinsel. Summer (May-August) has high Grass (Poaceae) levels from the Danube’s banks. Ragweed (Ambrosia) follows in late summer, originating from the eastern Pannonian plains.

The city sits between the Vienna Woods and the Danube basin; surrounding hills trap pollen during periods of low wind. Autumn and winter have high Mould (Alternaria, Cladosporium) counts; these come from leaf litter in the Lobau wetlands and damp city park grounds.