Forecast

Rain and sun alternate, and fungal spore and pollen concentrations also fluctuate!

In the coming days, rain and sun will alternate from Wechsel via Murau to Leibnitz. The precipitation will provide some relief for allergy sufferers. However, as soon as the rain stops and the sun comes out again, the levels of pollen and fungal spores can increase again.

Eastern and southern Styria is heavily affected by ragweed, which is currently in bloom. The pollen of this composite flower, which originates from North America, contains highly allergenic proteins and a concentration of just ten pollen grains per cubic metre of air can trigger allergic symptoms. Dense populations can occur in pumpkin, soya and sunflower fields. Localised exposure to ragweed can be intensified by ragweed pollen blown in. Especially on days with wind currents from the east and south-east, ragweed pollen can reach areas that are not yet infested by this neophyte through long-distance transport.

In southern and eastern Styria, the late-flowering annual mugwort has also started to dust. In general, the native mugwort species grow on dry grassland and in locations that have been heavily influenced by humans, for example on the edges of fields or paths and on scree slopes. Sensitised people should avoid dense stands, especially in the morning hours.

Due to possible cross-reactions, the Canadian goldenrod in flower is also of interest to people who are sensitised to mugwort or ragweed.

The reed blooms around the Styrian lakes. People who are sensitised to grasses can also react to reed pollen. Occasionally, other grass species continue to flower. However, these only pose a low risk to sensitised people. Stinging nettle and plantain are other herbs that are still in flower and can cause additional exposure.

During rainfall, these fungal spores are washed out of the air and people who are sensitised to them can expect short-term relief. However, as soon as the rain stops, the concentrations of fungal spores quickly rise again. At higher altitudes and above the tree line, the levels of fungal spores are noticeably lower.

Pollen from umbellifers, ivy, hemp, hops, balsam, goosefoot and cypress plants have also been detected in the ambient air. These are of minor allergological significance