Current pollen levels in Sweden’s larger cities. The pollen season in Sweden runs from February to September: hazel and alder first, birch and oak in spring, grass in summer, mugwort in late autumn.
About pollen monitoring
Swedish Museum of Natural History — official Swedish pollen monitoring
Pollen levels are compiled by the Palynology Laboratory at the Swedish Museum of Natural History (official Swedish pollen monitoring). The values show the maximum concentration per cubic metre of air, categorised as Low (<10), Moderate (10-49), High (50-99) or Very high (≥100).