Forecast

First increase in hazel pollen concentrations expected in western Austria!

As in the previous week, the weather forecast for Austria shows a mixed picture. While several hours of sunshine and daytime highs of around 10°C are expected in the west, the high fog will persist in the east and temperatures will remain in the low single digits.

This has a very clear effect on the development of hazel and alder catkins right now. While the sun's rays in the west are providing a small developmental boost and leading to low to localised moderate levels of hazel pollen, in the east, relevant pollen counts from isolated hazel and purple alder are still only to be expected in thermally favoured locations.

The native black and grey alders still need a few hours of sunshine to be ready for flowering and will probably only be able to release small amounts of pollen towards the end of this week in climatically favourable locations.

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 "early bloomers" due to cross-reaction.

The flowering readiness model has also shown little fluctuation over the past few days and indicates that flowering readiness will be reached across the board in most federal states by mid-February.

Forecast date: 2026-02-06

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.