Forecast

High levels of alder and hazel pollen!

Under the continuing influence of high pressure, the second half of the week will bring bright sunshine and spring-like temperatures to large parts of the country. This is accompanied by an intense pollen load, especially in the lowlands and valleys. Allergy sufferers can expect a heavy pollen count here. According to the current weather forecast, there could only be isolated precipitation in the west on Sunday, which should bring some temporary relief.

The main culprits for the expected high allergenic loads are still the pollen from hazel and alder. While tree and shrub hazels are still predominantly in full bloom, with the first catkins already appearing in some particularly sun-exposed locations, alders are also increasingly reaching the flowering phase. The first black alders are expected to join the grey alders, which are already in widespread bloom, in the coming days. In the foreseeable future, alder pollen is likely to replace hazel pollen as the dominant species in the pollen spectrum.

At higher altitudes, the vegetation period begins with a significant time delay. There, the first early bloomers can only be expected at very sunny locations in the forecast period.

In addition to the pollen types mentioned above, the following are also represented in the pollen spectrum: elms, poplars, willows, yews and cypresses. However, they only have a very low potential for allergic stress.

Forecast date: 2026-02-26

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.