Forecast

Birch pollen season in full swing - high allergen load in Tyrol!

With the return of spring-like conditions, the warm and sunny days of the past week have significantly accelerated pollen production and dispersal in Tyrol. We are now in the main phase of the pollen season, with several tree species flowering at the same time.

Birch pollen: The birch pollen season has now clearly begun and is already in full swing. The favourable weather conditions have led to a rapid increase in pollen release, resulting in moderate to locally high allergenic loads. Birch is currently the dominant allergenic pollen type, and allergy sufferers who are sensitised to birch pollen have probably already experienced clear symptoms in recent days.
Hornbeam and hop hornbeam are now also in bloom and can reach moderate pollen concentrations. Due to cross-reactions with birch pollen, these species can trigger or intensify allergic reactions, especially in urban areas and parks. Oak pollen is also currently on the increase; although it is generally less allergenic, it can also contribute to symptoms due to cross-reactions with birch pollen.

Ash pollen: Ash pollen continues to contribute significantly to the allergenic load. Moderate concentrations are predominantly measured in the region, but high levels are also possible locally. Together with birch, ash is currently a key trigger of allergy symptoms.

Hazel and alder pollen: The hazel and alder pollen seasons are drawing to a close. Their contribution to the current allergenic load is low.

Other pollen types: Pollen from the cypress family (Cupressaceae) currently makes up a significant proportion of the pollen spectrum, but is of low allergenic relevance in Tyrol.

Situation at higher altitudes: Above around 1500 metres, vegetation development is still delayed and birch pollen concentrations remain low there. The allergenic load in these areas is correspondingly reduced.

Moderate to high birch pollen concentrations are currently being observed in large parts of the region, making this phase a particularly challenging time for allergy sufferers. The allergenic load has been particularly intense over the past few days and is expected to remain high over the weekend. Only the rain and periods of increased cloud cover forecast for the coming week could provide localised and temporary relief.