Forecast

Rain and sun alternate, the pollen load goes up and down!

From the Schneeberg to the Waldviertel, the weather forecast predicts plenty of sunshine for the coming days. Pollen allergy sufferers have to be prepared for a high pollen load, as warm and sunny weather are ideal conditions for the pollen count.

In Lower Austria, the birch, ash and hornbeam have now finished flowering.

Instead, the oaks, beeches and walnuts are now in full bloom. All three have allergens that are related to those of the birch family. These can cause cross-reactions in people sensitized to birch plants.

For allergy sufferers who are sensitized to ash or olive trees, the current flowering of lilac and manna ash is important. Although both produce less pollen than the common ash, as they are pollinated by insects, allergy sufferers may experience symptoms in the direct vicinity of or in contact with these ornamental trees.

The plane tree has reached the peak of its flowering period. In residential areas, however, it can still cause low to moderate exposure.

The first specimens of annual bluegrass, foxtail grass and meadow grass are already flowering. Full flowering is not expected until the beginning of May (see flowering model). Particularly at the beginning, some of the model data still shows a wide range of fluctuation and only becomes more reliable as the season progresses.

The white flakes that can already be seen sporadically in the air are poplar absorbent cotton. It cannot itself cause allergic reactions as it is not pollen but poplar seeds and seed hairs. The flight of poplar absorbent cotton usually coincides with the start of flowering of the grasses.

Other types of pollen in the ambient air: maple, boxwood, mulberry, roses, horse chestnut, sour grasses and cypresses. These are of minor allergological importance.

Forecast from 28.04.2025

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.