Forecast
Issued 16th of March 2023
Situation and medium-term forecast
The pollination period of ash tree starts in Austria!
The temperatures will rise in the next days and are followed by an increase of sun hours; however, the weather conditions will stay unstable. Especially over the weekend episodes of rain will decrease the pollen release. Therefore, the expected allergenic burden will vary drastically from region to region.
Ash trees are causing moderate levels of allergenic burden if the conditions are favourable. First high pollen loads of ash tree are expected in the next days if the weather conditions are ideal for pollination. The pollination of alder is fading and will cause only low to moderate levels of allergenic burden. Hazel pollen is still causing low to moderate levels of burden as well. Responsible for this prolonged period of burden is the flowering of the corkscrew hazel, a shrub that is commonly used as ornamental plant.
What else: The pollen spectrum contains also pollen from acer, elm, poplar, willow, cypresses and yews.
| We expect the readiness to flower for birch in | on |
|---|---|
| Bregenz | 24.03.2023 |
| Eisenstadt | 22.03.2023 |
| Graz | 23.03.2023 |
| Innsbruck | 22.03.2023 |
| Klagenfurt | 24.03.2023 |
| Linz | 22.03.2023 |
| Salzburg | 22.03.2023 |
| St. Pölten | 23.03.2023 |
| Wien | 22.03.2023 |
| Bozen | 20.03.2023 |
| Munich | 23.03.2023 |
Forecast from 16.03.2023
Note: The model results give an indication of the expected start of flowering, based on information provided by local pollen warning services with direct reference to the local situation. Start of flowering is not to be equated with the beginning of the pollen season. When the start of flowering is achieved, the majority of the plants have the potential to release pollen, but only when weather conditions are favourable.
Responsible for the content:
pollenwarndienst.at and the Department of Oto-Rhino-Laryngology of the Medical University Vienna, Research group aerobiology and pollen information
Uwe E. Berger MBA, Mag. Maximilian Bastl PhD and Lukas Dirr MSc
medium-term forecast based on model and pollen data from Austria and surrounding countries
reprint and publication in parts or completely is permitted only quoting the source
weather data and today´s forecasts based synoptic data: ZAMG (Zentralanstalt für Meteorologie und Geodynamik)
zum Team
The current pollen load for Austria
alder (Alnus)
ash (Fraxinus)
