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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

The tree pollen risk will be low and the spore risk will also be low.

This forecast was last updated on 27th March 2015.


Tree Pollen - Low

The tree pollen risk will be low across the UK. Ash, Elm, Alder and Hazel trees are in flower but cool or showery weather will keep emissions at low levels. The birch pollen season is expected to start towards the second week of April in the South of the UK.



Grass Pollen - Low

The grass pollen counts will remain low until the late Spring.

Fungal Spore - Low

The spore levels will be mainly low during March. Although the air won't be entirely spore free levels are unlikely to trigger symptoms.

For more information on fungal spore allergy click here.


Weed Pollen - Low

The weed pollen counts will remain low until next Spring.

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.

For more information on the role of fungal spores in allergy, click here.

For more information on the role of pollen in allergy please see the following pages:

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 also available on a daily basis from September to the end of November.

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.