Cornwall Pollen Count Today

Cornwall’s pollen season typically runs from April to September. Tree pollen (birch, alder) peaks from March to May. Grass pollen, the most common allergen, is highest from late May through July. Weed pollen can persist into September. Outside these months, pollen counts are negligible.

Generally yes. Coastal areas benefit from onshore winds that carry cleaner maritime air with lower pollen concentrations. Beaches and cliff-top walks with a sea breeze can offer significant relief during peak grass pollen season. Inland valleys and agricultural areas tend to have higher counts.

Grass pollen is the dominant allergen in Cornwall and affects around 95 percent of hay fever sufferers. Cornwall’s mild, damp climate produces lush grassland, making grass pollen particularly prevalent from late May through July. Birch pollen can also be significant in spring.

Pollen counts are typically highest in the early morning (before 10am) and early evening (after 5pm) when pollen released during the day descends to ground level as the air cools. Midday is often the best time for hay fever sufferers to be outdoors, especially near the coast with an onshore breeze.