Pollen Count & Forecast for Harlow, East Hertfordshire

Harlow’s seasonal allergy profile begins late March with high Birch and Oak pollen from mature trees within Harlow Town Park and surrounding urban green spaces; June and July bring significant Grass pollen from River Stort Valley meadows and peripheral green belts.

Urban-rural interfaces and sheltered residential areas often exacerbate local pollen concentrations due to trapping; late autumn sees elevated Mould spore levels from damp leaf litter decomposition in parks and gardens.