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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 season approaching,risk currently low to moderate. Some weed pollen airborne. Spores moderate.

This forecast was last updated on27May 2016.

Tree Pollen - Low

The tree pollen season mainly finished and the risk will be low. In early Junea few locations will see a second oak peak from holm oak pollen.

Grass Pollen - Moderate

There is a risk of moderate grass pollen in the south and central regions during this forecast period. The main season grasses are getting ready to flower in manysouthern and central regions with high counts expected from around3-5 June. In other regions the season will start a little later.


Fungal Spore - Moderate

Damp weather will allow some moderate risk from tilletiopsis and sporobolomycesmainly at night. Cladosporium is on the increase too.

For more information on fungal spore allergy click here

Weed Pollen - Low

A few allergenic weeds such as plantain and dock are starting to flower but the risk will remain generally rather low. Nettle pollen will follow a similar pattern to that of the grass pollen season.

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.