UK weather: Spring sunshine forecast to bring the warmest day of the year

If you have watery or itchy eyes, a headache, a decreased sense of smell or sleep disturbance, and fatigue, you may be suffering from hay fever.
Plant pathologist and aerobiologist Prof. from Rothamsted Research Institute. Jonathan West told the BBC that the types of pollen in the air at the moment come from a variety of trees, mainly Alder, Hazel and Cypress, but also Yew and Elm.
“There was a lot of pollen in the air recently because we had a long period of relatively cool and wet weather, which slowed down flower development on early-blooming trees. This was followed by beautiful, sunny and warm weather, which suddenly accelerated the flowering of some trees, and they released large amounts of pollen.”
Rising temperatures caused by climate change mean the pollen season is lengthening. latest ‘Status of the Climate Report, externalThe report published by the Meteorological Department in 2025 revealed that hazelnut blooming is almost 10 days earlier than in the past.
The pollen forecast will be available on the BBC Weather app from Thursday 19 March.




