Forecast

The number of blossomed birch trees is increasing, but they are still a nuisance!

The weather in Vorarlberg will remain dry, mild and mostly sunny until the beginning of next week. Under these stable conditions, pollen can spread unhindered in the air - allergy sufferers must therefore continue to expect a high level of exposure.

The main culprit for the current pollen situation in Ländle is still the birch. In the valleys, many trees have already shed their catkins, while birches at higher altitudes can still release pollen. The flowering of the hornbeam on the other hand, has largely finished flowering; accordingly, only low pollen concentrations are still being measured.

At present, the Vorarlberg oaks and beeches are in bloom. Due to their botanical relationship to the birch family, they can trigger cross-reactions in sensitive people.

Likewise, the manna ashAlthough it is relevant for people allergic to ash pollen, it produces significantly less pollen than the common ash, as it is mainly pollinated by insects. Nevertheless, sensitised people should avoid direct contact with these trees.

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

The plane treea popular park and avenue tree, is in full bloom in Vorarlberg. Particularly along plane tree avenues, there can be noticeable stress. At the same time, the horse chestnuts also begin to blossom. Due to their relationship, they are particularly relevant for people who are sensitive to maple pollen are sensitised to maple pollen.

In the lowlands, the number of early-flowering grasses slowly but steadily increasing. The first flowering panicle, tufted and foxtail grasses have already been observed, meaning that low to moderate levels can be expected locally. At higher altitudes, however, the grasses will take some time to flower.

Oilseed rape is also in flower in the fields. Pollen levels can be significantly higher near these yellow-flowering areas, which is why sensitive people should avoid these areas if possible.

In addition to the pollen types already mentioned, pollen from maple, larch, rushes and cypress plants are present in the air. However, these only have a low allergenic potential.

Forecast from 2026-04-23

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.