Forecast

First strains for allergy sufferers in Vorarlberg!

The week begins in Vorarlberg with dry weather conditions and temperatures above 5 °C. This means that the first relevant pollen count can occur from Bregenz to Bludenz. Allergy sufferers who are sensitised to hazel or alder must be prepared for stress on Monday and Tuesday. The weather forecast promises rain from Wednesday and for the rest of the week. This should provide relief again, as pollen is washed out of the air and the release of pollen is hindered.

The number of hazelnuts ready to flower has increased over the past week in the lowlands of Vorarlberg. We have received reports of flowering hazels especially from climatically favoured locations in the settlement area. In locations at higher altitudes, the hazels still need a few warm days to reach flowering.

The purple alder, a hybrid of Caucasian andJapanese alder, which usually flowers between Christmas and New Year, has not yet reached its full flowering potential. In Vorarlberg, it is only found planted in parks or as a street tree. It is therefore only to be expected in residential areas with very localised pollution.

The catkins of the alder species(black and grey alder), which are widespread in the Ländle region, are still largely closed. Only in thermally favoured locations can isolated specimens have already reached flowering readiness and cause local pollen dispersal.

Note: The immune system of pollen allergy sufferers can react particularly sensitively at the start of the pollen season. Birch pollen allergy sufferers could also potentially be affected by the pollen count of the "early bloomers" due to cross-reaction.

From a current perspective, the model data suggests that the flowering readiness period will be reached this week.

Forecast date: 2026-02-12

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.