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Pollen forecast

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

Summary and Weekly Synopsis

Fungal spores will continue with a high risk, moderate in Scotland & N.Ireland. Aspergillus and Penicillium types are now in peak period. Aspergillus and Penicillium types are now in peak period.

This forecast was last updated on 23 September 2016.

Tree Pollen - Low

The tree pollen risk is generally low but cedar trees are now producing pollen and this type affects a small number of hay fever sufferers in the UK.

Grass Pollen - Low

The risk from grass pollen is now down to low with just the occasional sneeze or sniffle likely during good weather.


Fungal Spore - High

Cladosporium and Alternaria will be at moderate levels. Aspergillus and penicillium spores are now in peak period and the worst days occur when the weather is warm and humid.  Warm  humid nights will continue to allow a moderate to high risk from Didymella, Tilletiopsis and Sporobolomyces. Basidiospores from mushrooms  toadstools and bracket fungi  are now in peak period too. Fungal spores affect around 10% of atopic individuals  triggering a range of respiratory problems including asthma.      

For more information on fungal spore allergy click here





Weed Pollen - Low

The weed pollen season is now in full decline and the counts will be mainly low.


Other information

Oilseed rape (Brassica napus) pollen can cause hay fever in a small number of sufferers but Volatile Organic Compounds (VOCs) given off by the crop can cause irritation of the upper respiratory tract and eyes in some people in close proximity to the crop.

Further Information

Further information on this service can be obtained from Beverley Adams-Groom on 01905 855411.

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

Daily forecasts are issued from the middle of March to the end of September. Tree pollen forecasts are issued in late spring (late March to Mid May). Grass pollen forecasts are issued from late May to August. Weed pollen forecasts are issued from July to the end of May. Fungal spore forecasts are available from the University of Worcester from September to early November. Please contact Beverley on the number above for details.

Daily 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 amount of pollen produced.