Forecast

18
August
Situation and medium-term forecast for

Issued 17th of August 2022

Situation and medium-term forecast

The peak pollination period of mugwort has passed!

Throughout the past days mugwort reached its peak pollination period and caused high allergenic burden. Therefore, it already consumed most of its flowering potential and may causes only moderate allergenic burden. However, higher burden may still occur in close vicinity to large mugwort populations on fallow land or ruderal areas.

More and more ragweed plants reach readiness to flower. Therefore, moderate allergenic burden must be expected in the eastern parts of Austria until the weekend. Then rainfalls are expected to cause a short time of relief.

Remark: The burden of weed pollen allergy sufferers might be augmented due to cross-reactivity in the overlapping flowering phases of mugwort and ragweed. Ragweed pollen occurs increased at supposedly atypical times of the day, especially during the night and the early morning hours, if winds from the Southeast cause long distant transport. Ragweed pollen allergy sufferers are advised to keep windows closed during the night.

Golden rod is flowering. This plant is insect pollinated and does not cause a noticeable widespread pollination but might be of importance for sensitive persons with sensitization to composite plants (such as mugwort and ragweed) in direct contact. Canada golden rod is a neophyte of importance in Austria and is used as ornamental plant in bouquets.

The grass pollen season fades.
Dock and plantain still flower.

Fungal spores mostly occur in moderate concentrations in the lowlands. The expected burden decreases at higher altitudes.

What else: The pollen spectrum contains pollen of nettle, hop and the goosefoot family.

Responsible for the content:

pollenwarndienst.at 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 Lukas Dirr MSc
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

fungal spores (Alternaria)

Thursday, 18. August
3
Friday, 19. August
3
Saturday, 20. August
2

mugwort (Artemisia)

Thursday, 18. August
2
Friday, 19. August
2
Saturday, 20. August
1

ragweed (Ambrosia)

Thursday, 18. August
2
Friday, 19. August
2
Saturday, 20. August
1
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