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Pollen forecast

We produce and supply the pollen forecasts for the UK in conjunction with the Met Office. This forecast was last updated on 17/02/2017.

Summary and Weekly Synopsis

Hazel and alder pollen rising to moderate at times. Penicillium and aspergillus spore types will continue to trigger symptoms.

Tree Pollen - Low

Hazel trees are now releasing pollen in generally low amounts. Alder tree pollen is likely to reach a moderate risk this week during mild, dry days.

Grass Pollen - Low

The grass pollen season will start in May.


Fungal Spore - Moderate

Penicillium and aspergillus spore types will continue to trigger symptoms in those susceptible, particularly during milder weather. However these types are in decline and most people will probably already have seen a reduction in symptoms. All other spore types are currently at low levels.

For more information on fungal spore allergy click here.

Weed Pollen - Low

The weed pollen season will start in the 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.

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.