Pollen Count & Forecast for Waltham Forest

Waltham Forest experiences peak tree pollen (Birch, Oak, Ash) March-May, originating from Epping Forest’s extensive woodlands and the Lee Valley Regional Park’s varied arboreal zones; grass pollen peaks late May-July, predominantly from Leyton, Hackney, and Walthamstow Marshes’ expansive meadows and River Lea riverbanks.

The Lee Valley’s linear geography can channel and intensify pollen concentrations; urban green spaces (e.g., Lloyd Park, Jubilee Park) create localised hotspots, with dry, windy conditions increasing dispersal; autumn sees elevated outdoor mould spore levels, driven by decomposing leaf litter and damp environments across the borough.