Forecast

Some rain during the birch blossom!

In the coming days, it will remain sunny in large parts of Lower Austria with maximum daily temperatures of around 15 °C. This means that the pollen count will be unhindered and high pollen concentrations are to be expected. Short-term relief from precipitation is possible in the industrial and Mostviertel regions on Friday afternoon. How heavy this will be depends on the intensity of the rainfall. Currently the birch is currently responsible for the main allergen in the ambient air. In the coming days, pollen concentrations will remain at a high level.

Another birch plant, the hornbeamis also flowering in Lower Austria. As birch, alder, hornbeam and hazel are closely related, cross-reactions can occur in sensitised individuals.

In the higher altitudes of the industrial, cider and forest districts, the ash still has the potential to release pollen. Moderate levels of exposure are still possible here. In the Danube region, the Vienna Basin and the Weinviertel, on the other hand, the ash trees have largely finished flowering and only cause a low pollen load.

Also poplar and willow continue to flower. However, both show a downward trend in the pollen spectrum.

In the coming days, the first plane trees will reach flowering readiness. The impact of these early starters is currently still very localised. The widespread flowering of this popular street and park tree will still need a few sunny days.

In climatically favoured locations in the lowlands of Lower Austria, the first flowering grasses have already been sighted. These can already cause initial problems in their immediate surroundings.

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

Forecast from 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.