Many grasses are still in bloom. This means there is a high risk of high grass pollen levels throughout Götaland and Svealand, as well as in most of Norrland, according to the Swedish Museum of Natural History's website Pollen Report.
In a small part of northernmost Norrland and in the mountains, the risk is elevated.
The levels can be high, especially during dry weather, and in areas adjacent to tall grass.
In addition, the flowering of grey alder has begun. There is a locally increased risk of high levels of grey alder pollen in Götaland and parts of southern and central Svealand.
In the rest of Sweden, there may be a small risk of high levels near flowering grey alder.
The current forecast is valid throughout Friday.
