University of Worcester's pollen forecast and fungal spore forecast for the UK.
Weekly pollen and fungal spore forecast summary
Forecast to 21st March 2025: Pollen: Peak period for alder pollen; Spores: Aspergillus/penicillium types moderate/high.
Grass Pollen Count - Low

Grass pollen season will begin in April or May.
Tree Pollen Count - High

Alder pollen will continue for about one more week, at high risk during mild, dry weather. Hazel pollen at moderate risk during dry days (+10C) in northern parts but in decline elsewhere. Birch pollen season is expected to start in early April.
Fungal Spore Levels - High

Aspergillus/penicillium types are expected to increase again this week. Pleospora will be airborne during mild, dry weather.
Weed Pollen Count - Low

Weed pollen season will begin in April or May.
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