Forecast

Sunny weather and high pollen load!

From the Waldviertel to the Schneeberg it remains sunny and dry. These stable weather conditions ensure that the pollen count can continue undisturbed throughout Lower Austria. Allergy sufferers must be prepared for days with moderate to high levels of pollen

The birch remains the dominant allergen in the air. In the Danube region, the Weinviertel and the Vienna Basin, the majority of birch trees have already flowered. However, birch trees can still release pollen in the higher regions of the industrial, cider and forest districts. High concentrations are still being measured there. Birch pollen can be transported from these regions to the lowlands and cause additional pollution, especially in the afternoon hours.

Walnut, oak and beech are in bloom in Lower Austria. Due to their relationship to the birch family, they can also trigger allergic cross-reactions in sensitive people.

The manna ash a common street and park tree, is also currently in bloom. Although it is relevant for people with an ash pollen allergy, it produces significantly less pollen than the common ash, as it is mainly pollinated by insects. Nevertheless, the immediate vicinity of these trees should be avoided.

The lilac is also in bloom. As a relative of the ash tree, it can cause cross-reactions in people who are sensitive to olive trees. As it is also mainly pollinated by insects, the pollen load is usually low and limited to the immediate vicinity. Sensitive people should therefore avoid placing flowering branches indoors.

The plane tree has already passed its flowering peak, but can still lead to noticeable exposure in avenues. Horse chestnuts are now flowering in large parts of Lower Austria. Due to their relationship, they are particularly important for people who react to maple pollen.

Rape is flowering in the fields. Sensitised people should avoid the area around these yellow-flowering fields, as the exposure can be intense here.

The number of early flowering grasses is increasing in the Danube region, the Weinviertel and the Vienna Basin. The first panicle, tufted and foxtail grasses have already been observed, so that low to moderate levels of contamination can be expected locally. In the higher regions of the industrial, cider and forest districts, however, it will take some time before the grasses start to flower.

In addition to the pollen types already mentioned, there is currently also pollen from maple, spruce, larch, rushes and cypresses cypress plants in the air. However, these only have a low allergenic potential.

Forecast from 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.