Pollen information for Austria from 23 April 2026
Sunshine allows intense pollen count throughout Austria!
During the second half of the week, the weather forecast promises many hours of sunshine and temperatures that often exceed the 20 degree mark. This will result in intense pollen counts in many parts of the country.
And this despite the fact that almost all of Austria is at the height of the birch pollen season is already over. Birch pollen still makes up a very large proportion of the pollen spectrum, but many plants have already shed their catkins, especially in the lowlands. In these areas, the impact will mostly be low to moderate; the focus of the impact has now shifted to medium to higher altitudes, where high levels of impact can still be expected.
Due to cross-reactions, however, even more intensive stresses can be felt in the lowlands, which are also caused by the beech trees that are currently in bloom. beeches, oaks, hornbeams and hop hornbeams originate. They are all closely related to birch and therefore contain allergens with clear structural similarities.
In urban areas, there is also a risk of exposure to the plane tree blossom are to be expected. These can be particularly intense along plane tree avenues, even if the main flowering period is already over.
At some measuring points, pollen from ash pollen pollen, which originates from the currently flowering manna ash trees and can again lead to symptoms in people who are sensitised to the pollen of the olive tree plants. Similar to the lilac, which is also in flower, the manna ash is a plant that is mainly pollinated by insects. As a result, its pollen can usually only be found in the air in relevant concentrations in the immediate vicinity of the plants.
In rural areas, the first rapeseed fields are in bloom. To avoid possible symptoms, pollen allergy sufferers should avoid being near these fields.
Poplar cotton wool is already flying in thermally favoured locations. The white flakes cannot trigger allergic symptoms as they are not pollen but poplar seeds and seed hairs. As the flight of poplar cotton wool usually coincides with the start of the grass flowering the start of grass flowering, symptoms are often wrongly attributed to the poplar.
It still takes until the beginning of May before the grasses are ready to flower across the board. In some locations in eastern Austria, however, the first flowering panicle grasses, foxtail grasses and tussock grasses have already been sighted, which can lead to the first minor complaints locally. These can be replaced by the first flowering representatives of the plantain in the meadow aspect.
In addition to the pollen types mentioned above maple, larchmulberry, horse chestnut, sour grasses, walnut and cypress plants are represented in the pollen spectrum. However, they only have a very low allergenic potential.
Flowering grasses | at |
Bregenz | 2026-05-07 |
Eisenstadt | 2026-05-03 |
Graz | 2026-05-02 |
Innsbruck | 2026-05-02 |
Klagenfurt | 2026-05-02 |
Linz | 2026-05-04 |
Salzburg | 2026-05-06 |
St. Pölten | 2026-05-05 |
Vienna | 2026-05-03 |
Munich | 2026-05-09 |
Bolzano | ready for flowering |
Forecast date: 2026-04-23
Note: The data shown here are model data for the expected start of flowering. For more detailed information on the expected pollen count, please refer to the text forecasts.
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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