Pollen Forecast for Decorah, Iowa
Low
Cedar/Juniper
Today
Based on past pollen counts and expected weather conditions, pollen levels for Friday will be falling into the very 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 morning and evening which tend to wash pollen out of the air.
Outlook
Concentration of pollen grains in the air for Saturday will be falling and will remain in the extremely low range. This lowering of pollen concentrations is a result of rising humidity, weakening winds and expected precipitation in the afternoon and evening which tends to wash pollen out of the air.