Forecast

Purple alder pollen can be a local nuisance!

Purple alder has already been found ready to flower in the field, which can release pollen in sunshine and temperatures of at least 5 °C or has already released pollen in places in the last few days.

The purple alder, which is occasionally planted in this country as a park and ornamental tree, typically reaches its flowering stage around Christmas time and can cause allergic reactions in the immediate vicinity of the plants.

From today's perspective, hazel and alder are not expected to start flowering across the board until the second half of January. Until then, localized pollen counts can only 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.

Forecast from 26.12.2024

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.