Situation and medium-term forecast for

Issued on April 15, 2024

Weather-related breather in the next few days, birch, beech, oak and grasses take a break!

The current weather conditions are leading to a decline in pollen levels throughout Germany. The birch pollen season has already passed its peak in the lowlands and is now gradually coming to an end. There are hardly any large quantities of birch pollen left in the air. Under certain wind conditions, however, there may be a sharp increase in the concentration of birch pollen due to long-distance transport from higher regions to the north or from northern European countries. However, the cold front expected for this week will significantly reduce the overall pollen load.

Beech and oak trees are in peak bloom and can lead to a high pollen load on sunny and dry days. However, due to the current weather forecast, the exposure to beech and oak pollen will decrease significantly this week. It should be noted that birch pollen allergy sufferers can also react to beech and oak pollen, which can lead to more severe symptoms.

Exposure to sycamore pollen has fallen sharply in urban areas. In streets with plane tree avenues and large parks, higher levels may still occur locally, but pollen levels are no longer higher over large areas.

Due to the current weather conditions, the main flowering of grasses will not begin this week. Some allergologically relevant grass species, such as meadow grass, bluegrass and smooth oat, are already flowering in thermally favorable locations, but the cold front is preventing a higher load. In most regions, there is therefore not yet a widespread release of pollen and grass pollen concentrations are usually still below the irritation threshold. Only particularly sensitive people are already reacting with symptoms.

Our forecast models calculate the nationwide start of the grass flowering period as follows:

Bregenz 08.05.2024
Eisenstadt 28.04.2024
Graz 27.04.2024


Klagenfurt 29.04.2024
Linz 29.04.2024
Salzburg 29.04.2024
St. Pölten 28.04.2024
Vienna 28.04.2024
Munich 02.05.2024
Bolzano 25.04.2024

Status 15-04-2024

Erste Gräser © Johannes Bouchal

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 Mag. Sonja Berger

Wetterdaten und Prognosen basierend auf synoptischen Daten:
GeoSphere Austria, Bundesanstalt für Geologie, Geophysik, Klimatologie und Meteorologie (ehemals ZAMG)
zum Team