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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

Grass pollen risk high during good weather but grasses getting tired in thesouthern half of UK. Weed pollen mild. Fungal spores high.

This forecast was last updated on15th July2016.

Tree Pollen - Moderate

The tree pollen risk will be mainly low but lime and sweet chestnut trees are now flowering with a moderate risk close to the trees.

Grass Pollen - High

Many grasses have now finished flowering in the south of the country so the risk will be moderate to high during good weather for just a little while longer. In the northern half of the country the high risk will continue until late July and there may even be some moderate to high risk into early August.

Fungal Spore - High

Warm humid nights will allow a high risk from Didymella, Tilletiopsis and Sporobolomyces. Good weather will allow Cladosporium and Alternaria to increase to high levels. Ganoderma (basidiospores) will be prevalenttriggering a range of respiratory problemsincluding asthma.

For more information on fungal spore allergy click here

Weed Pollen - Moderate

There will be a moderate risk from weed pollen including nettlepellitory-of-the-walldock and fat hen. Mugwort will be along in late July.

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 areavailable 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.