Forecast

Grass pollen is gaining relevance!

The weather forecast promises plenty of sunshine and early summer temperatures until midday on Saturday. The conditions are therefore ideal for pollen counts. Only then will showers and thunderstorms provide at least short-term relief.

The birch season is over. Only rarely are individual pollen grains to be found in our measuring stations. Some birch pollenallergy sufferers can still experience allergic symptoms, as pollen from beech, oak and walnut can lead to cross-reactions.

The next and longest phase of the pollen season is already in the starting blocks: the grasses are in bloom. In Vienna, there may already be low to moderate exposure to grass pollen in the coming days. The main culprits for this are the foxtail, tufted and panicle grasses, which are already in bloom.

The plane trees have finished flowering. Only along plane tree avenues can there still be isolated pollen releases, but even here most of the plants have already faded.

Lilac and manna ash continue to flower and can irritate people who are sensitized to the pollen of olive trees. Due to the fact that these plants are insect-pollinated, a relevant pollen load is only to be expected in the immediate vicinity of the plants.

Allergy sufferers should avoid the vicinity of flowering rapeseed fields in order to prevent possible symptoms.

The conifers have also started to flower and their pollen can already be registered at our measuring points. In the coming days, it is possible that their pollen will cause yellow deposits on cars or window sills. However, neither pine nor spruce or fir pollen can cause allergic reactions.

The white flakes that can currently be seen in the air are poplar absorbent cotton. It cannot itself trigger allergic reactions as it is not pollen but poplar seeds and seed hairs.

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

Forecast from 01.05.2025

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.