Allergies & Pollen Count for Ogden, Iowa
Discussion
The pollen levels for Sunday will be falling into the extremely low range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to falling temperatures, rising humidity and heavy rains in the afternoon which tend to wash pollen out of the air.
Allergy Facts
Quack grass, a grass which was naturalized from Europe, is a nuisance that plagues farmers. This plant flowers (i.e., sheds pollen) from July to September and can cause hay fever symptoms in people with grass pollen allergies.