Forecast

Changeable weather, fluctuating pollen count!

The week starts cold with snow or rain. This gives allergy sufferers a brief respite. It will remain changeable for the rest of the week. In many places, the hazels are ready to bloom. As soon as the sun shines long enough to dry the catkins and temperatures rise above 5 °C, they will release pollen.

The flowering of the purple alder is coming to an end and will be replaced by the first grey alder specimens ready to flower. The catkins of the black alder are also about to bloom. A slightly above-average number of catkins was observed on these two native alder species. Due to the changeable weather conditions, the alders are expected to be under low to moderate pressure in the coming days. Should it be sunnier than forecast in some regions of Lower Austria, these climatically favoured locations may also experience higher levels in the short term.

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.

Forecast date: 2026-02-20

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.