The warning of a high risk of high levels of grass pollen, especially during dry weather, applies to all of Götaland and Svealand as well as the coastal areas of Norrland, according to the Nordic Museum's Pollen Report website.
In southern Sweden, the levels can be very high.
In Norrland they have begun to rise. There is now an increased risk in large parts of inland Norrland. In the far north and in the mountainous regions, the risk is still low, according to the site.
The warm weather and the flowering of tall meadow grasses are behind it. In areas adjacent to tall grass, pollen levels generally increase across the country.
However, the birch pollen season is over for the year.
The current assessment is valid until Monday.
