Situation and medium-term forecast for

Issued 1st of March 2021

Situation and medium-term forecast

Sunny weather during the main pollination period of alder!

Fairweather conditions and only minor rainfalls promoted alder and hazel pollination over the weekend. This trend will continue until Friday. Then, the temperatures will drop, and rainfalls will arrive in Austria. These conditions will cause a reduction of airborne pollen and herald the end of the early bloomers pollen period.

In the Austrian lowlands, the alder bloom is in full swing, and pollen allergy sufferers have to expect a moderate to high burden. Higher pollen concentrations may be reaches in areas with larger alder populations (e.g. near rivers or close to a lake) and should be avoided by sensitized persons. Due to the mild weather, alders at higher elevations have reached flowerer readiness and may cause low to moderate allergenic burden.

At higher elevations and in the valleys of Carinthia, the hazels are currently in full bloom and may cause moderate to high allergenic burden. In the rest of Austria, the hazels have passed their main pollination period and pollen concentrations are continuously declining. Though, a low to a moderate allergenic burden may still be reached.

Tip: Protect your conjunctiva mechanically and very simple with sunglasses: part of the pollen is kept from your eyes and you thus protect your already irritated mucous membranes of your eyes, which are more sensitive to light than usual during an allergic reaction. A hat with a broad brim keeps pollen in addition from you. The FFP2 face masks, which are at the moment obligatory for using public transportation and shopping groceries in Austria, are also very useful for pollen allergy sufferers. If worn correctly, the face masks provide protection against pollen and keep it from entering the respiratory system.

The pollen of the following plants is also currently airborne in Austria: poplar, willow, cypresses and yews. Their pollen is only of minor allergological importance.

The forecasted start date of the hazel and alder pollen season is calculated based on forecast models. Due to the uncertainty of long-term temperature forecasts, hazel’s and alder’s actual flowering start can still vary. The predictions become more accurate as the season approaches.

We expect the readiness to flower for alder and hazel inon
Viennaready to flower
Eisenstadtready to flower
St. Pöltenready to flower
Linzready to flower
Salzburgready to flower
Innsbruckready to flower
Bregenzready to flower
Grazready to flower
Klagenfurtready to flower
Bolzanoready to flower
Munichready to flower

Forecast from 01.03.2021
Note: The model results give an indication of the expected start of flowering, based on information provided by local pollen warning services with direct reference to the local situation. Readiness to flowering is not equal to the beginning of the pollen season. When the start of flowering is achieved, most of the plants can release pollen, but only when weather conditions are favourable.

Responsible for the content: 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)
zum Team

The current pollen load for Austria

Legende: 1 = Low, 2 = Moderate, 3 = High, 4 = Very High

alder (Alnus)

Thursday, 04. March
Friday, 05. March
Saturday, 06. March

hazel (Corylus)

Thursday, 04. March
Friday, 05. March
Saturday, 06. March

cypress family (Cupressaceae)

Thursday, 04. March
Friday, 05. March
Saturday, 06. March
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