Forecast

Situation and medium-term forecast for

Issued on May 9, 2025

The allergenic load from grass pollen is increasing throughout Tyrol!

Grass pollen. The grass pollen season has now begun in the region. Moderate to high allergenic loads were already measured around May 1st in warm and sunny weather. Although recent rain has temporarily reduced the pollen load, a renewed increase in allergenic load is expected with the return of sunny conditions over the next few days. Pollen concentrations can be particularly high near meadows and grassy landscapes. In addition to grass pollen, small amounts of plantain and dock pollen are also registered. Plantain pollen has a moderate allergenic potential and often affects people who are already sensitive to grass pollen. Although sorrel pollen is considered to be less allergenic, it can exacerbate the symptoms of grass pollen allergy sufferers. Together, these additional pollen types can further increase the discomfort experienced by allergy sufferers. If you are allergic to grass pollen, now is the time to take appropriate precautions. One helpful strategy may be to move to higher altitudes, as pollen concentrations are generally lower there.

Birch pollen. The birch pollen season is now coming to an end in the lower-lying valleys, where only low concentrations are currently being observed. At higher altitudes, however, birch trees are still flowering and locally increased pollen concentrations may occur. Small amounts of oak and beech pollen are also present. It is important to note that both oak and beech pollen can trigger cross-reactions in people with birch pollen allergies, which can lead to persistent symptoms even though the birch pollen load is already decreasing.

Ash pollen. Only low concentrations of ash pollen are currently being measured throughout the region.

Spruce and pine pollen. The pollen concentrations of spruce and pine are currently very high and make up the majority of the pollen in the air. Their conspicuous sulphur-yellow deposits are clearly visible on cars, window sills, garden furniture and in puddles. Although spruce and pine pollen do not cause allergies, they can cause a foreign body sensation in the eyes.

Other types of pollen. We also record pollen from horse chestnut, larch, walnut, cypress and willow, but these are of little importance from an allergological point of view.

Pollen and weather conditions. Pollen dynamics are closely linked to weather conditions, as these influence pollen production, release, dispersal and allergenicity. Humidity and precipitation reduce the release and dispersal of pollen, while warm and sunny periods lead to higher pollen concentrations in the air. Wind plays a crucial role in transporting pollen over long distances and can therefore affect allergy sufferers even far away from the place of origin. Understanding these relationships is crucial for effective allergy management and a reliable prognosis.

Stay informed and take precautions. Knowing the current pollen levels in your region is essential for controlling your allergy symptoms. Follow our updates regularly and take appropriate measures to reduce your exposure. With the right precautions, you can enjoy the season and continue to spend time outdoors.

Knäuelgras ©ÖPID, Johannes M. Bouchal

Responsible for the content

Universität Innsbruck
Institut für Botanik
Dr. Laurent Marquer
Mittelfristige Prognose basierend auf Modelldaten und Pollenzählungen.
Auszugweiser oder vollständiger Nachdruck und Veröffentlichung nur unter Angabe der Quelle gestattet.

Wetterdaten und Prognosen basierend auf synoptischen Daten:
GeoSphere Austria, Bundesanstalt für Geologie, Geophysik, Klimatologie und Meteorologie (ehemals ZAMG).
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