Pollen forecast for Vienna, 30 July 2026
Pollen and fungal spore levels remain high despite the heatwave!
The coming days will be hot and dry. As things stand today, only on Saturday might there be heat-induced showers in the evening. Fortunately, the peak period of the grass pollen season is already over and mugwort has not yet reached its peak flowering stage, which is why people with pollen allergies can expect only moderate levels of pollen. Fungal spore levels in the air, on the other hand, are high and may reach regional peaks, particularly following rainfall.
The grass pollen season has passed its peak and now generally results in only low pollen concentrations in the ambient air. In forests or along riverbanks, levels may still be higher.
Along paths and roadsides, additional levels can be expected from sorrel, goosefoot plants and plantain.
Unlike grass pollen, mugwort pollen levels are rising rapidly before the peak of the season is reached in mid-August.
Ragweed is also growing and sprouting; it will take until well into August before it flowers. If you spot ragweed populations whilst out and about, you are welcome to report them via the ‘Ragweed Finder’ citizen science platform. Reports can be submitted either via the website ragweedfinder.at or via the app (for Android and iOS). The reports are checked by experts from the ‘Ragweed Finder’ team, plotted on the ragweed map and forwarded at regular intervals to the relevant authorities in the federal states. These authorities can then use the sightings to take further action.
In addition to the pollen types already mentioned, pollen from stinging nettles, hemp, carnations and cypresses is also currently present in the pollen spectrum. However, these pose only a very low allergenic risk.
Responsible for the content
AZ Pollenresearch GmbH
im Auftrag des Vereins Österreichischer Polleninformationsdienst in Kooperation mit der GeoSphere Austria.
Dr. med. Markus Berger, Dr. rer. nat. Johannes M. Bouchal und Lukas Dirr, MSc.
Wetterdaten und Prognosen basierend auf synoptischen Daten:
GeoSphere Austria, Bundesanstalt für Geologie, Geophysik, Klimatologie und Meteorologie (ehemals ZAMG).
zum Team
