Pollen Alerts For Bethesda, MD

Pollen Index: 10.2 Pollen Level: high Predominant Pollen: Birch, Maple and Cedar/Juniper. The amount of pollen in the air for Wednesday will be falling in the moderate range. This lowering of pollen concentrations is a result of falling temperatures, rising humidity, and heavy rains in the evening which tend to wash pollen out of the air. With this amount of reduction in pollen levels, tomorrow should be better for allergy sufferers.