Forecast

Situation and medium-term forecast for Styria

Pollen information for Styria from 27 April 2026

Sunny start to the week, localised rain provides brief relief!

The week starts sunny and dry. Rain is to be expected in some parts of Styria on Tuesday and Wednesday. As long as the sun is shining, the pollen can fly unhindered and cause moderate to high levels of pollution. Where it rains, the precipitation will provide short-term relief for pollen allergy sufferers.

Furthermore, the birch is responsible for the main allergen in the air. In the lowlands of eastern and southern Styria, the main bloom is already over. In residential areas, however, ornamental birch species can continue to release pollen. In the higher elevations of western Styria, there is still potential for pollen release, meaning that even high concentrations can be reached there. In addition, pollen-rich air masses can be transported from these areas to the lowlands in the afternoon hours and cause pollution there.

In Styria, the following are now also in bloom walnut trees, oaks and beeches. Due to their relationship to the birch family, they can also trigger cross-reactions in sensitive people.

Now the manna ash is also blooming in southern Styria. manna ash. It is important for people with an ash pollen allergy, but it produces significantly less pollen than the common ash, as it is mainly pollinated by insects. Nevertheless, sensitised people should avoid the immediate vicinity of these trees.

Lilacs are also currently in bloom. As a relative of the ash tree, it can cause cross-reactions. As it is mainly pollinated by insects, the amount of pollen is comparatively low and exposure usually only occurs in the immediate vicinity of the plants. People who are sensitive to olive trees should therefore refrain from placing flowering branches indoors.

The plane tree is already past its peak, but can still cause noticeable exposure along avenues. The horse chestnuts are also in bloom. Due to their relationship, they are important for people who are sensitised to maple pollen.

Rapeseed is also in bloom in the fields of Styria. Pollen levels can be significantly higher in the vicinity of these intensely yellow flowering areas, which is why sensitive people should avoid such areas if possible.

In eastern and southern Styria, the number of early-flowering grasses continues to increase. Flowering panicle, tufted and foxtail grasses have already been sighted, meaning that low to moderate levels of exposure can be expected in their vicinity. At higher altitudes, the grasses still need some time to flower.

In addition to the pollen types already mentioned, there is currently also pollen from maple, sprucelarch, rush and cypress cypress plants in the air. However, these only have a low allergenic potential.

Flowering grasses

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Bad Aussee

2026-05-10

Bad Mitterndorf

2026-05-11

Bruck/Mur

2026-05-05

Graz University

2026-05-01

Hartberg

2026-05-01

Kalwang

2026-05-12

Kapfenberg airfield

2026-05-03

Leibnitz

2026-04-30

Mariazell/St Sebastian

2026-05-18

Murau

2026-05-06

Ramsau/Dachstein

2026-05-20

Schöckl

2026-06-01

Zeltweg

2026-05-06

Forecast date: 2026-04-27

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.

Blütenstand der Stieleiche ©ÖPID, Johannes M. Bouchal

Responsible for the content

AZ Pollen Research GmbH
in Kooperation mit dem Institut für Pflanzenwisenschaften der Karl-Franzens-Universität Graz im Auftrag der Steiermärkischen Landesregierung.
Dr. rer. nat. Johannes M. Bouchal, Lukas Dirr, MSc und Mag. Pramod Harvey.

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