Pollen forecast

Dandelion clocks are a common sight in spring

Different types of pollen are released throughout the year which can generate hay fever and other allergies. Our pollen forecast can help you manage these symptoms providing pollen counts five days ahead.

The pollen count season is normally March to August. However, it can start as early as January and end as late as November.

The pollen season separates into three main sections:

  1. Tree pollen - late March to mid-May.
  2. Grass pollen - mid-May to July.
  3. Weed pollen - end of June to September

Our forecast is based on this detailed breakdown of the different types of pollen and their peak times within a season.


Pollen forecasts are available on the weather map and provide people with vital information to help reduce the impact of pollen on their health.

We manage the only pollen count monitoring network in the UK using information from our network, our weather data and expertise from organisations such as the National Pollen and Aerobiological Unit and PollenUK to produce forecasts that help support allergy and hay fever sufferers through the most difficult time of the year.

The above weather map shows you exactly how pollen is behaving in your area right now, by combining official Met Office data, social activity and live pollen alerts from fellow sufferers.

This year the pollen forecast is sponsored by Benadryl®

Benadryl advert Benadryl advert (this opens up a link in a new window)

Pollen count calendar

The pollen calendar below shows an average pattern of release of the main allergenic pollen in the UK. The severity and timing of the pollen seasons will differ from year-to-year depending on the weather, biological factors and geographical location.

Pollen Calendar Infographic 2012