Pollen Count & Forecast for Dublin

Dublin’s spring (March-May) is dominated by Silver Birch and Ash pollen; Silver Birch (Betula pendula) prolific in Phoenix Park and residential gardens; European Ash (Fraxinus excelsior) widespread across city parks. Sessile Oak (Quercus petraea) contributes from the Liffey Valley and St. Stephen’s Green. Summer (May-August) sees high Grass (Poaceae) levels, originating from the Dublin Mountains and North Bull Island.

Coastal winds from the Irish Sea often clear pollen; low-lying streets can trap damp air and allergens. Autumn and winter see elevated Mould (Alternaria, Cladosporium) counts, from decomposing leaf litter in parklands and along the River Liffey.