Pollen concentration of Alder and Hazel (MeteoSwiss)
Measurement values of Alder and Hazel, hourly average pollen concentration [pollen per cubic meter of air]. Data is updated every hour. The data set contains all stations of the automatic national pollen monitoring network.
The intensity of the pollen loads and the beginning and duration of the pollen season change from year to year according to the weather conditions before and during the pollen season. The rising temperatures of climate change are resulting in an earlier pollen season, and, in the case of certain pollen species, higher pollen loads.
Link to the map: map.geo.admin.ch