Weekly pollen and fungal spore forecast summary
Forecast to Friday 20th March 2026, for West Midlands forecast region: Pollen: alder pollen moderate; Spores: Aspergillus high when dry.
Grass Pollen Count - Low
Grass pollen risk will be very low.
Tree Pollen Count - Moderate
Alder pollen at moderate risk on any dry, mild days, reducing to low as the season goes into decline. The birch pollen season is expected to start in the last week of March, weather permitting.
Fungal Spore Levels - High
Aspergillus will be airborne over the next few weeks, on dry days, with a high risk at times. Sufferers of aspergillus often report symptoms at this time of year, particularly during mid-late March. Pleospora will be airborne during mild, dry weather.
Weed Pollen Count - Low
Weed pollen risk pollen risk will be very low.
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