As hay fever season sweeps across the UK from late March to September, households are being advised to keep their windows and doors closed, especially between 10am and 3pm. This period coincides with the highest release of pollen, which can dramatically worsen allergy symptoms.
The hay fever timeline begins with tree pollen from late March to mid-May, shifts to grass pollen which dominates until July, and finally weed pollen takes over from late June through September. These patterns vary regionally, with pollen counts generally lower in northern areas compared to the south.
Grass pollen is the primary trigger for many suffering from hay fever, with notable peaks in early June and early July. Following the warmest spring and May since 1884, the recent elevated temperatures at the end of June have created ideal conditions for pollen production, intensifying symptoms.
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Typical hay fever symptoms include sneezing, nasal congestion, itchy eyes, and headaches. These symptoms worsen in warm, humid, and breezy weather conditions. The Met Office predicts another spell of hot weather starting Wednesday, June 11, with temperatures rising into the high 20s Celsius. This will coincide with surging pollen levels, especially in North West England, the West Midlands, London, and the South East, where “very high” pollen counts are expected. The rest of the UK should prepare for “high” pollen levels.
Since hay fever has no cure, experts recommend strategies to reduce exposure. Keeping windows and doors closed during peak pollen times is one of the most effective measures to prevent pollen from entering homes and settling on furnishings, which can worsen symptoms.
While the NHS advises shutting windows and doors “as much as possible,” they understand that warmer weather may tempt people to open their homes. If you do, timing is essential—limiting airflow during the high pollen hours is crucial.
Glen Peskett, DIY specialist at Saxton Blades, emphasizes the importance of allergy-proofing your living spaces. He advises especially shutting windows and doors between 10am and 3pm, when pollen release peaks and windy conditions can distribute pollen widely. Peskett adds that this is particularly important in bedrooms to ensure restful, allergy-free nights.
By following this simple advice, hay fever sufferers can significantly reduce their exposure and better manage their symptoms throughout the challenging pollen season.