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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

A high tree pollen risk during good weather. Birch pollen will run for another week or two. Oak pollen is increasing and will peak in May.

This forecast was last updated on29 April 2016.

Tree Pollen - High

A mixed risk from tree pollen over the bank holiday weekend and into the start of the working week. A high risk is expected during lengthy dry sunny periods particularly in the southern half of the UK. Birch pollen will be the main allergen airborne but oak pollen will also be increasing in numbers. The birch pollen season is expected to last for another week in the south and a little longer in the north.

Grass Pollen - Low

The grass pollen risk will be low all regions but the presence of lawn grass (Poa annua) could trigger the odd sneeze on dry days. The grass pollen season will be a little delayed this year due to the cold spring weather. Expect the early flowering types to start triggering symptoms from mid-May. The main season is unlikely to start before early June.

Fungal Spore - Low

The spore risk will remain low over the coming week. The Cladsporium season will start in May but the risk will be low initially.

For more information on fungal spore allergy click here

Weed Pollen - Low

The weed pollen risk will be low inall regions untilnext summer.

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.