Forecast

The birch blossom is progressing and is a heavy burden!

It will remain dry and mild in large parts of Lower Austria in the coming days. There may be localised rainfall in the Mostviertel region on Tuesday and Thursday. This may provide some relief here. In the rest of Lower Austria, the pollen count will be largely unhindered and can lead to high levels of pollution.

Currently the birch is currently responsible for the main allergen in the ambient air. As the birch trees are carrying a particularly large number of catkins this year and these still have the potential to release pollen, the birch blossom has not yet reached its peak.

In Lower Austria the hornbeam. As birch, alder, hornbeam and hazel are closely related, cross-reactions can occur in sensitised people.

In the higher altitudes of the industrial, cider and forest districts ash, poplar and willow continue to have the potential to release pollen. Moderate levels of contamination are still possible here. In the Danube region, the Vienna Basin and the Weinviertel, on the other hand, most of these early bloomers have already finished flowering and only cause a low pollen load.

First plane trees have reached the flowering stage in parks and residential areas. The pollution caused by 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 2026-04-13

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.