Pollen Alerts For Portland, ME

Pollen Index: 9.8 Pollen Level: high Predominant Pollen: Birch, Oak and Maple. Pollen concentrations for Sunday will be falling in the moderate range. This relief in pollen levels is caused in part by falling temperatures, rising humidity, and expected precipitation in the afternoon and evening which tends to wash pollen out of the air. The lower pollen levels are significant and should help allergy sufferers to cope tomorrow.