Pollen Count & Forecast for Portsmouth, Fareham

Portsmouth’s March-May spring allergy peak features Birch and Oak pollen from urban green spaces like Victoria Park and Southsea Common; May-July summer sees significant Grass pollen release from coastal meadows including Farlington Marshes and extensive areas of Southsea Common.

The city’s exposed coastal geography, particularly prevailing south-westerly winds across The Solent, influences pollen distribution; however, urban layouts can locally concentrate airborne allergens; autumn-winter brings Mould spore allergies, sourced from damp leaf litter decomposition in parks and shaded coastal areas.