here here
Allergies & Pollen

Pollen Forecast for Greenville, Illinois

8.5
Medium-High
Oak, Mulberry and Hickory/Pecan
Powered by Pollen
Today
Based on past pollen counts and expected weather conditions, pollen levels for Monday will be falling but will remain in the high range. The cause for the falling pollen levels is rising humidity, weak winds and expected precipitation in the afternoon and evening which tends to wash pollen out of the air.
Outlook
Concentration of pollen grains in the air for Tuesday will be rising in the high range. This increase is due to higher temperatures and the lower dewpoint.