Pollen Forecast for Onawa, Iowa

Pollen concentrations for Thursday will be increasing over today's levels but will remain in the extremely low range. This increase is due to rising temperatures.

Pollen concentrations for Friday will be falling and will remain in the extremely low range. Since the weather has a major influence on pollen dispersal, this decrease is due in part to rising humidity, weakening winds and expected precipitation in the morning and evening which tends to wash pollen out of the air.