We supply and produce the pollen forecast for the UK in conjunction with the Met Office.

Weekly pollen forecast and summary


Forecast for 16th-22nd September 2023:  Pollen: mostly low weed risk. Spores: High.

Grass Pollen Count - Low


Grass pollen will remain at low levels through the remainder of the summer.

Tree Pollen Count - Low 

 Pollen forecast for trees with a low green pollen count.

Tree pollen risk is currently very low but Atlas cedar trees will soon emit pollen, causing symptoms in a small minority of people in parks and gardens where these trees are planted as ornamentals.

Fungal Spore Levels - High


Pollen forecast for spores with a high orange pollen count.


Aspergillus/Penicillium will be at high risk during good weather this week. Leptosphaeria & allies will rise to high after rain. Alternaria & Cladosporium are in decline, reducing from moderate to low over this week. Basidiospores from mushrooms and toadstools often high.

Weed Pollen Count - Moderate


Pellitory-of-the-wall (Parietaria) and nettle pollen have dropped down to a generally low risk. 


Further Information      

For more information about this service please contact Dr Beverley Adams-Groom on 01905 855411 or via email.

Pollen forecasts are available on a regional basis to cover the whole of the UK including Northern Ireland and the Republic of Ireland. They can also be provided in detail for individual regions.

Daily pollen and spore forecasts are issued from mid-March to early October

Daily pollen 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 pollen count.

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