Forecast

The grass pollen season is about to begin!

In terms of weather, the picture is more complex during the first half of the week. This is because Tyrol, Carinthia and Styria may experience precipitation towards the middle of the week due to a disturbance. In the rest of the country, however, it will remain dry. Conditions that allow pollen to fly are to be expected there, whereas the rain can provide relief for allergy sufferers, at least in the short term.

In the lowlands and valleys, the birch blossom has passed its peak and will usually only be able to cause low to moderate levels of stress in the forecast period. Although there are still beeches, oaks, hornbeams and hop hornbeams and can thus intensify the pollution through cross-reactions, but here too the hornbeams in particular are already fading.

The centre of pressure of the birch blossom is shifting to the higher altitudes and can still lead to high pollen concentrations in the air there. Under suitable wind conditions, it is quite possible that pollen will be transported to the lowlands, where it can cause a further increase in pollution.

The plane tree blossom is already dying down in most parts of the country. However, allergy sufferers should continue to avoid being near plane tree avenues.

People who are sensitised to olive tree pollen should continue to expect symptoms in the coming days due to the blossoming of the manna ashbut also to lilacs in the immediate vicinity.

In rural areas, rape fields are in bloom. To avoid possible symptoms, pollen allergy sufferers should avoid being near these fields.

Poplar cotton wool is also increasingly flying through the air. The white flakes cannot trigger allergic symptoms as they are not pollen, but seeds and seed hairs of the poplar are involved. As the flight of poplar cotton wool usually coincides with the start of the grass flowering the start of grass flowering, symptoms are often wrongly attributed to the poplar.

It still takes until the beginning of May before the grasses are ready to flower across the board. In some locations in eastern Austria, however, the first flowering panicle grasses, foxtail grasses and tussock grasses have already been sighted, which can lead to the first minor complaints locally. These can be further intensified by the first flowering representatives of plantain in the meadow aspect.

In addition to the pollen types mentioned above maplespruce, Scots pine, larch, mulberry, horse chestnutsour grasses, fir,walnut and cypress plants are represented in the pollen spectrum. However, they only have a very low allergenic potential.

Forecast date: 2026-04-27

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.