Forecast

Changeable weather and fluctuating pollen loads!

The coming days will alternate between sun and rain in Vorarlberg. Allergy sufferers can expect a high level of stress during the sunny periods. On Friday afternoon, the first rainfall will provide some relief. Saturday will be sunny and warm again. As soon as the catkins of the birch have dried out, the pollen count will pick up again. From Sunday afternoon into the coming week, it is expected to be rainy. This precipitation will hinder the release of pollen and clear the air of pollen.

The birch blossom continues in the Ländle, with the first peaks having already been reached. As the birch trees in Vorarlberg have a particularly large number of catkins this year and these still have a high potential for pollen release, the blossom has not yet reached its peak.

The hornbeams which also belong to the birch family, are also dusting and causing increased pollution. As birch, alder, hazel and hornbeam are closely related, cross-reactions can occur in sensitised people.

In the valleys, the ash has already passed its flowering peak. At higher altitudes, however, it still has the potential to release pollen. Allergy sufferers who are sensitised to this olive tree should avoid dense stands. Forsythia is also an olive tree plant. However, as it is pollinated by insects, it produces smaller amounts of pollen than the ash tree, meaning that exposure only occurs in the immediate vicinity of this yellow-flowering herald of spring.

Also poplars and willows continue to flower, but the number of flowering specimens is steadily increasing.

In parks and residential areas, individual plane trees shortly before flowering. These early starters are the first localised source of stress for sensitised people.

In climatically favoured locations (sunny southern locations, green spaces in residential areas), flowering grasses and sour grasses have already been sighted. In their surroundings, sensitised allergy sufferers may experience initial symptoms.

In addition to the pollen types already mentioned maple, yew, oak, larch and 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.