Pollen Alerts For Baltimore/BWI Arpt, MD

Pollen Index: 10.5 Pollen Level: high Predominant Pollen: Maple, Oak and Poplar/Aspen/Cottonwood. The quantity of pollen grains in the air for Wednesday will be falling but will remain in the high range. This lower level is caused by falling temperatures, rising humidity, and heavy rains in the evening which tend to wash pollen out of the air. Relief is in sight.