Pollen Count & Forecast for Warrington, St. Helens

Warrington’s spring pollen season, March-May, is dominated by Birch, Oak, and Ash; peak concentrations emanate from urban woodlands like Sankey Valley Park and Walton Hall Gardens. Summer, May-July, sees high grass pollen from abundant riverine meadows along the Mersey and open parklands.

The city’s basin topography and dense urbanisation can trap airborne particulates, elevating localised pollen counts; late autumn to winter brings mould spores, exacerbated by damp leaf litter decomposition in wooded areas and wetlands such as Risley Moss.