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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 with generally high risk which will be reduced occasionally by showers. Weed pollen moderate to high fungal spores high.

This forecast was last updated on24th June2016.

Tree Pollen - Low

The tree pollen risk will be low until the lime trees (Tilia spp.) flower later in June.

Grass Pollen - Very High

The grass pollen risk will be high to very high at times in England, Wales and Northern Ireland. Unsettled weather will occasionally reduce the risk to low to moderate. In Scotland the high risk days will be fewer and more intermittent and the highlands and islands will be mainly moderate. Grass pollen affects around 95% of hay fever sufferers.

Fungal Spore - High

Warm humid nights will allow a high risk from Didymella, Tilletiopsis and Sporobolomyces. Cladosporium and Alternaria will be at moderate levels during warm weather. Ganoderma (basidiospores) will be prevalent 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 - High

There will likely be high amounts of nettle/pellitory-of-the-wall although the counts so far have been relatively mild. Dock plantain and fat hen will be airborne at low to moderate amounts. Weed pollen affects approximately 20% of those affected by hay fever.

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.