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What weather conditions are typically associated with areas of high and low pressure?
Coastal fog refers to the occurrence of fog over coastal regions, usually occurring in Spring and Summer. It is also known as Haar and Fret in some parts of the UK.
Tree pollen occurs first, typically from late March to mid-May. Grass (which actually has two peaks) lasts from mid-May until July, and weed pollen covers the end of June to September.
This page explores the links between nutrition and hay fever
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