In Finland, the pollen season is set to commence, with reports indicating that the first pollen from alder trees has already reached southern parts of the country over the weekend. According to the pollen forecast from the University of Turku, this airborne pollen is a result of long-distance transport, having traveled over 100 kilometers from its origin. The entry of this pollen marks the beginning of a challenging period for many allergy sufferers in Finland, as pollen is expected to continue spreading in the coming days.

Foreca, a weather service, has predicted that pollen from both alder trees and hazel plants will increase in Finland's southern regions over the next week. Blooming for these plants is anticipated to start within approximately two weeks. Typically, the pollen season in Finland runs from February or March and can last until September, depending on climatic conditions, with the northern regions experiencing a delayed start to the pollen season.

The onset of the pollen season can vary significantly; in milder years, it may begin as early as February, especially due to the airborne transport of pollen from hazel trees. This year's forecast seems consistent with such patterns, igniting concern among the estimated one million residents who suffer from pollen-related allergies, as they prepare for the potential symptoms and disruptions caused by the returning pollen levels.