Pollenservice Wien

The weed pollen season has ended. Finally, the pollen season 2026 ends.

We provide this convenient overview graph to visualize pollination during the calendar year besides our pollen calendars.
You find more about this seasonal overview here.

Copyright: MedUni Vienna, www.pollenservice.wien

Figure: status of the flower development of neophytic Artemisia species (status 22nd of October 2026): finished flower from Chinese wormwood (left) and Annual mugwort (right).

Mid- and long-term forecast for Vienna

This forecast gives you an overview for a longer time period so that you can improve your planning.

The pollen season 2026 comes to an end!

The late flowering of neophytic Artemisia species ends with the end of the flower of Chinese wormwood. Annual mugwort has finished flowering earlier.

Finally, the pollen season 2026 ends.
The measurements are continued and we keep you informed here.

The fungal spore season is fading, but relevant spore concentrations are still measured. A reduction to low values is expected for the near future.

Pollination profile
Fungal spores:
state of the season: end of the main period/spore concentrations
trend: decreasing
time of the start of the season: average

You can find the typical pollen seasons in our pollen calendar. 

Pollen spectrum:
Pollen from cedar and ivy is also in the air.

Updated on: 22nd of October 2026

Current main allergen: Fungal spores

Exposure time in Vienna: May to October

Occurrence in Vienna: The molds in focus here thrive on vegetation. This ranges from potting soil to grain fields. Note: The concentration of fungal spores outdoor has nothing to do with the occurrence of molds indoors.

Who are “the fungal spores“?
The spores of the molds Alternaria and Cladosporium are of allergological importance, especially the former. The here discussed fungal spores are the most important ones for ambient air. There is a high diversity of molds, that are present indoors and can spread on food. Molds may cause allergies, but also toxic reactions escalating to mycosis (invasion of the inner organs).
Alternaria belongs to the blackness-fungi. It grows primarily on vegetation and causes plant diseases that can result in crop failures (fruit, cereals). Persons concerned should not mow the lawn, since it is often located on dry plants. However, Alternaria is also found in the living area.
Cladosporium belongs as well to the blackness-fungi. It prefers forests, gardens, and swamps. It is the most common fungal spore in ambient air.

Cross-reactivity: In general, there is cross-reactivity to spores of other molds (e.g. Aspergillus, Epicoccum).

• The Pollenservice Vienna is part of the University Department of Otolaryngology, Head and Neck Surgery at Medical University of Vienna.
• The collaboration with GeoSphere Austria involves comparing forecasts and exchanging pollen and weather data. 
• The Pollenservice Vienna is official partner of the Gesundheitsdienst (MA15) of the City of Vienna.