Pollen Count & Forecast for Stevenage, East Hertfordshire

Stevenage experiences peak spring allergen load (March-May) from Birch and Oak pollen, originating from extensive urban parkland (e.g., Fairlands Valley Park) and tree-lined residential avenues; summer (May-July) is dominated by Grass pollen, prevalent across local meadows, playing fields, and riverbank areas.

The town’s green belt proximity and sheltered urban design can concentrate airborne pollen levels; late-season (September-November) sees elevated Mould spore counts, primarily from decaying autumn foliage in damp, shaded environments.