Forecast

Situation and medium-term forecast for Vienna

Pollen information for Vienna from 26 February 2026

Hazel and alder cause intense pollen count!

In the second half of the week, precipitation is no longer to be expected in Vienna and the sun will appear more frequently. While it remains cold at night and in the early hours of the morning, temperatures usually rise well above 10 °C during the course of the day. Due to this temperature pattern, the most intense pollen counts are to be expected from midday onwards.

The main cause of the current pollen count is still the pollen from hazel. It continues to dominate the pollen spectrum. It is closely followed by the pollen of alderwhose concentrations are expected to increase further in the coming days. Alder pollen could replace hazel pollen at the top of the pollen spectrum as early as next week.

As the main allergens contained in the pollen of these plants are structurally very similar, cross-reactions often occur. Many allergy sufferers who are sensitised to one of the two types of pollen therefore also develop symptoms when they come into contact with the other. This phenomenon is particularly common with early-flowering plants, which include hazel, alder and birch is one of them.

In addition to the pollen types mentioned above, the following are also represented in the pollen spectrum: elm, yew and cypress plants. However, they only have a very low potential for causing allergic reactions.

Blühende Haselkätzchen ©ÖPID, Lukas Dirr

Responsible for the content

AZ Pollenresearch GmbH
im Auftrag des Vereins Österreichischer Polleninformationsdienst in Kooperation mit der GeoSphere Austria.
Dr. med. Markus Berger, Dr. rer. nat. Johannes M. Bouchal und Lukas Dirr, MSc.

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