Forecast

Sun, rain, sun and the birch dusts!

The birch is the main allergen in the air. As long as the sun shines and it stays dry, it can dust unhindered and cause high levels of pollution. Precipitation is forecast for Friday in large parts of Styria. Depending on how heavy it is, this could provide short-term relief for pollen allergy sufferers. The weather situation will improve again on Saturday and Sunday and the pollen count will gain momentum with a high pollen load.

At higher altitudes, the number of birch trees ready to flower continues to increase. In the lowlands and valleys of Styria, they are already in full bloom but have not yet reached their full flowering potential.

In the mountainous regions of Styria, the hornbeam will be ready to flower in the coming days. In eastern and southern Styria it is already in full bloom. As birch, alder, hornbeam and hazel are closely related, sensitised people may experience cross-reactions.

In eastern and southern Styria ash, willow and poplar have already passed their flowering peak and generally only reach moderate pollen concentrations. In the valleys of Styria, however, these early bloomers still have the potential to release pollen. Here, high pollen concentrations can still occur in the ambient air.

In residential areas and parks, the first plane trees have started to dust. The pollution caused by these early starters is limited to the immediate vicinity of these trees. The widespread flowering will take a few more days.

In climatically favourable locations in eastern and southern Styria, the first flowering grasses and sour grasses have already been reported. These can cause the first local symptoms in sensitised people.

In addition to the pollen types already mentioned mapleyews, oaks, larches, elms and cypresses cypress plants are also represented in the pollen spectrum. However, they only have a very low potential for allergic reactions.

Forecast date: 2026-04-09

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.