S: Start of season; E: End of season; FH: First high count date; NH: Number of high count days; PI: Pollen Integral (total catch).

Data analysed for 10 years (2003 to 2014), for main UK pollen allergens (averages).

Reference: Adams-Groom et al. 2020. Regional calendars and seasonal statistics for the United Kingdom’s main pollen allergens.  Allergy. https://doi.org/10.1111/all.14168

map of the UK with red squares to show different regions

Map of pollen forecast regions and main pollen monitoring station location, per region (red dots).





This is a generalised pollen calendar to show when the main allergenic plants are in flower. The timing will differ from south to north and also west to east and with height above sea level. The exact timing and severity of the pollen seasons will differ from year to year depending on the weather and on biological factors.


UK Pollen Calendar showing when the main allergenic plants are in flower during the UK's pollen season.


Low Pollen Holiday Destinations

Though it is impossible to completely avoid pollen there are lower pollen holiday destinations that vary depending on the time of year.

Low tree pollen holiday destinations

Low grass pollen holiday destinations