Forecast

High levels of birch pollen will be dampened for a short time on Friday!

The weather forecast promises spring-like temperatures and several hours of sunshine until Friday. On Sunday, clouds are expected to move in from the west, which could cause precipitation, especially in Vorarlberg, Tyrol and Salzburg. During these phases, allergy sufferers can look forward to some short-term relief, otherwise very intense pollen counts are to be expected.

The main cause of the current pollen count is the pollen of the birchwhich is in full bloom in large parts of eastern Austria. There it causes high to very high pollen concentrations in the ambient air, which are only briefly dampened by cooling and rain on Friday. In western Austria, birch pollen concentrations are also trending upwards, but are unlikely to reach peak levels during the prongose period.

In addition to birch, other representatives of the birch family such as hornbeam or hop hornbeam are also ready to flower and can cause additional exposure through cross-reactions, as the allergens of these plants are structurally very similar to those of birch.

The ash pollen season has already passed its peak in the east. In the west of the country, however, it is still underway and can still cause high levels of exposure, while only low to moderate pollen concentrations are expected in the eastern lowlands.

The plane tree, which is often planted as an avenue tree plane tree which is often planted as an avenue tree, is also likely to be ready for flowering in the second half of the week in thermally favoured locations in urban areas and can lead to additional pollution.

In some thermally favoured locations, the first grasses in flower. These are very localised occurrences that can currently only cause minor pollution in the immediate vicinity. The forecast data for the grass pollen season currently indicate that the grasses will be ready to flower at the beginning of May. These data are still subject to major uncertainties at the beginning of the season and will become more precise over time.

In addition to the pollen types mentioned above, maple, yew, oak, poplar, sour grasses and elm are also currently in bloom, elmand cypress plants are represented in the pollen spectrum. However, they only have a very low allergenic potential.

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.