We supply and produce the pollen forecast for the UK in conjunction with the Met Office.

Weekly pollen forecast and summary

Forecast for 20th-26th August 2022: Weed pollen: high risk in south-east and eastern regions. Spores: high.

Grass Pollen Count - Low

 Pollen forecast for grass with a low green pollen count.

 Grass pollen will remain at a low risk.

Tree Pollen Count - Low

 Pollen forecast for trees with a low green pollen count.

Tree pollen at zero risk this week.

Fungal Spore Levels - High


Peak spore season. Alternaria rising to high risk during warm, sunny weather in lowland areas; Penicillium/aspergillus types at an increasing risk; Didymella and Leptosphaeria will increase for a time after any rainfall; Basidiospores (from mushrooms/toadstools), Cladosporium and Epicoccum at a moderate to high risk in warm, dry and sunny weather. 

Weed Pollen Count - High

Pollen forecast for weeds with a high orange pollen count.


Weed pollen includes nettle, mugwort and pellitory-of-the-wall (Parietaria judaica) and a slight risk from ragweed (Ambrosia). The greater risk will be in urban areas of the south-east and eastern regions.

Further Information      

For more information about this service please contact Dr Beverley Adams-Groom on 01905 855411 or via email.

Pollen forecasts are available on a regional basis to cover the whole of the UK including Northern Ireland and the Republic of Ireland. They can also be provided in detail for individual regions.

Daily pollen and spore forecasts are issued from mid-March to early October

Daily pollen forecasts are featured in newspapers, on radio, on television and various web pages.

All the forecasts are based on information from the quality controlled data produced by the National Pollen Monitoring Network, combined with the information from weather forecasts, local vegetation and typography types and information about biological factors and the weather in the preseason period that influences the pollen count.

Science at Worcester

If you are interested in the science behind the pollen forecast, you may be interested in our science degrees. We also offer tours of our Pollen Labs as part of our Open Days.