The pollen season of mugwort (Artemisia) is ongoing. This herbaceous plant is frequently found on roadsides, embankments, banks or vacant lots. It can be responsible for allergies for sensitized people.

High concentrations of allergenic fungal spores of the genus Alternaria and Cladosporium occur in the air during the summer months. People who are allergic to such mold (sometimes also present in indoor spaces) should take all precautions.