Forecast

Purple alder ready to flower!

Although no relevant pollen count has yet been recorded at our monitoring stations, observations in the field have already revealed purple alder ready to flower, which could lead to the first blooms in the next few days if the weather is right.

The purple alder, a hybrid of Japanese alder and Caucasian alder, which is occasionally planted in this country as a park and ornamental tree, reaches flowering readiness around Christmas time, as in previous years. Due to their comparatively low distribution, however, allergic reactions are only to be expected in the local vicinity of the trees. In thermally favorable locations, the plants may already be releasing pollen, as we have already received the first reports of people with allergy symptoms.

From today's perspective, however, hazel and alder are not expected to start flowering across the board until mid to late January. Until then, as already mentioned, locally limited pollen counts are only to be expected in thermally favorable locations.
The probable start of the hazel and alder pollen season is determined by forecasting models based on temperature forecasts, the accuracy of which increases as the season approaches.

The Austrian Pollen Information team wishes you a relaxing and symptom-free holiday season!

Forecast from 19.12.2024

Note: The data shown here is model data for the expected start of flowering. For more detailed information on the expected pollen count, please refer to the text forecasts.