Issued 21st of June 2021
Situation and medium-term forecast
Altitude dependent burden from grass pollen!
Due to the high temperatures during the past days of more than 30°C and the absence of rainfall the grass pollen season passed its peak in the valleys and lowlands. In these regions moderate to occasional high burden has to be expected. In mid-altitude regions or shadowy areas, the vegetation period starts with a little delay which results in high burden also during the next days. Rainfalls will reduce pollination for a short time.
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.
Ryegrass, meadow grass, fescue, oat grass, wheatgrass and tussocks are flowering. Therefore, grass pollen allergy sufferers should avoid flowering meadows because the burden is higher there. Grass pollen allergy sufferers will find better conditions in high altitudes at or above the timber line as well as in dense deciduous forests.
Dock and plantain are still flowering and may increase the burden of grass pollen allergy sufferers.
The main flowering period of rye is ending. Only close to crop fields allergy sufferers may experience local burden.
Sweet chestnut is flowering. Its pollen might induce discomforts in some birch pollen allergy sufferers due to cross-reaction.
Green alder already passed its peak flowering period but still causes allergenic burden at higher altitudes. Due to long distance transport its pollen may still causes low burden at lowlands or valleys as well.
Nettle is flowering and already reaches moderate to high concentrations. But its pollen is only of minor allergological importance.
Linden is flowering. But its pollen is only of low allergological importance.
Fungal spores reach moderate burden all across the country but will decrease at higher elevation.
What else: The pollen spectrum contains pollen from yews, cypresses, elder, pine, privet and tree of heaven in addition, which is of a low allergological importance.
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 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)