Pollen Alerts For Riverside, DE

Pollen Index: 10.2 Pollen Level: high Predominant Pollen: Oak, Birch and Grass. Based on past pollen counts and expected weather conditions, pollen levels for Sunday 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 morning which tends to wash pollen out of the air.