Pollen Count & Forecast for Westminster

Spring sees dominant Birch and Oak pollen, March-May; originating from Regent’s Park, Hampstead Heath woodlands, and pervasive urban street trees across Westminster and Camden. Summer brings peak Grass pollen, May-July; sourced from park lawns, meadows, and river/canal banks.

Urban topography, including dense building structures and parkland proximity, can concentrate localised pollen levels. Autumn introduces mould spores, September-November; prevalent from damp leaf litter and decaying organic matter in shaded park areas and along the Regent’s Canal.