Issued 20th of September 2021
Situation and medium-term forecast
Ragweed pollen concentrations are declining!
After a rainy weekend the weather conditions will improve from Tuesday onwards. The sunny weather will provide ideal conditions for pollination. Therefore, a low to moderate allergenic burden must be expected for this week.
The peak pollination period of ragweed has passed. The local ragweed populations have depleted most of their pollination potential. For the coming week, only marginal long-distance transport of ragweed pollen from our neighboring countries will occur. Therefore, a low to moderate ragweed burden may occur. Locally, a high allergenic burden may be reached, especially in the vicinity of infested soy and sunflower fields.
Pollen of mugwort, nettle and plantain only reaches low concentrations because most of these plants already ended their flowering period.
In reed belt areas, high grass pollen concentrations may be reached. The reason for this is the current bloom of common reed. The flowering period of most other grass species has ended. Some species may rebloom, but the pollen concentrations will not rise above moderate burden.
The peak fungal spore season is over, and for the following days, moderate to high concentrations must be expected.
What else: The pollen spectrum contains pollen from Mercurialis, hop, cypresses and the goosefoot family and ivy in addition, which is of low allergological importance.
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 Mag. Dr. Johannes Bouchal
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)