Pollen forecast for Vienna on 18 May 2026
High levels of grass pollen!
The start of the new week will be accompanied by sunshine and temperatures above 20 degrees. Although the weather forecast also predicts some clouds, the likelihood of showers is only slightly increased from Wednesday to Thursday. This could create conditions that encourage high pollen counts. People who are sensitive to grass pollen are particularly affected.
This is because a number of grass species have already reached flowering stage in the capital. Among others, flowering specimens of smooth oatgrass, mouse-ear grass, tufted hairgrass, rough hairgrass, tufted bentgrass and foxtail grass have already been spotted. They are responsible for the current pollen levels. In meadows, levels may be further intensified by sorrel and plantain species that are also in flower.
The flowering of the manna ash is drawing to a close and is now only likely to cause allergic symptoms in very localised areas.
In the coming days, the first lime trees will also begin to flower. As the flowers of this plant are adapted to insect pollination, they are rarely found in the air. However, their scent can irritate the airways of sensitive individuals.
Pollen from conifers is still present in the ambient air, but this is not relevant from an allergy perspective.
Our air samples also contain increasing amounts of fungal spores, which can cause symptoms in people with allergies. Concentrations are currently still low, but will rise significantly by summer.
In addition to the pollen types mentioned, the pollen spectrum currently also includes nettles, umbellifers, elder, black locust, horse chestnut, papilionaceous plants, walnut and cypresses. 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).
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