The Met Office issues a warning that pollen levels rise across large parts of the UK. According to the reports, the higher pollen concentrations are expected to persist for the next four days. The warning is framed as part of ongoing weather-related impacts, with the outlets noting that the period of elevated pollen coincides with other difficult conditions for people outdoors or with allergies. The coverage does not identify any specific pollen type in the provided excerpts, but describes a broad spike in pollen and a continued high-risk period. The guidance is presented as a public heads-up to help people prepare, particularly those who experience hay fever or other allergy symptoms. The information is attributed to the Met Office, which monitors pollen levels and communicates risk forecasts to the public.