Situation and medium-term forecast for

Issued 4th of June 2020

Situation and medium-term forecast

Rainfalls and thunderstorms lead this weekend to a fluctuating grass pollen burden!

The flowering of the grasses continues. This weekend thunderstorms, rainfalls, and sunny phases will be alternating. In sunny and dry phases, the allergenic burden can reach high levels in the Austrian lowlands and valleys. The flower of grasses has reached the middle and high elevations of the Alps. Here, pollen concentrations can reach moderate to high levels as well.

Attention during thunderstorms: A weather situation like the current one can lead to a particular burden for pollen allergy sufferers, especially asthmatic persons because pollen could burst open during thunderstorms and release free allergen into the air.

Orchardgrass, false-oat grass, bunch grasses, couch grass, ryegrass and fescue grasses flower among the grasses. Grass pollen allergy sufferers should avoid flowering meadows because the local burden is higher there. The burden is lower where it was mowed. Grass pollen allergy sufferers will find better conditions in high altitudes at or above the timberline as well as in dense deciduous forests.

Cultivated rye still flowers and may affect or burden additionally grass pollen allergy sufferers in proximity to fields in growing regions. Dock and plantain flower.

The flowering of green alder continues in its sub-alpine distribution areas. The main pollen load remains of this species in mid- to high-altitude regions. In valleys and lowlands, its pollen will mostly arrive in a low to moderate amounts. Green alder pollen might concern alder and birch pollen allergy sufferers.

Pollen from members of the nettle family, spruce, fir, elderberry, walnut, black locust, and lime tree. This weekend moderate concentrations of fungal spores are to be expected.

We expect the readiness to flower for grasses 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 04.06.2020
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. Start of flowering is not to be equated with the beginning of the pollen season. When the start of flowering is achieved, the majority of the plants have the potential to 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. Katharina Bastl
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

grasses (Poaceae)

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

alder (Alnus)

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

rye (Secale)

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