Forecast

Ash pollen count picks up speed!

The coming days in Vienna will be sunny and mild. This means ideal conditions for pollen count and therefore also a very high risk of intense allergic stress.

The main cause of the current pollen count is the pollen of the birchwhich is in full bloom in the city and in the recreational areas around Vienna. Its pollen has already led to very high levels of pollution over the Easter weekend and will remain at this level for the rest of the week.

In addition to birch, other representatives of the birch family such as hornbeam or hop hornbeam are ready to flower and can cause additional stress through cross-reactions, as the allergens of these plants are structurally very similar to those of birch.

The ash pollen season has already passed its peak in Vienna. Therefore, only low to moderate pollen concentrations are to be expected in the ambient air.

In thermally favoured locations such as sheltered courtyards or parks, the first grasses are already appearing in isolated cases. grasses in bloom. These are very localised occurrences that can currently only cause minor pollution in the immediate vicinity. The forecast data for the grass pollen season currently indicates that the grasses will be ready to flower at the beginning of May. These data are still subject to major uncertainties at the beginning of the season and will become more precise over time.

In addition to the pollen types mentioned maple, yew, poplar, sour grasses and cypress plants are represented in the pollen spectrum. However, they only have a very low potential for allergic stress.

Forecast date: 2026-04-07

Note: The data shown here are model data for the expected start of flowering. For more detailed information on the expected pollen count, please refer to the text forecasts.