Pollen Alerts For Aloha, OR

Pollen Index: 8.9 Pollen Level: medium-high Predominant Pollen: Birch, Ash and Alder. Concentration of pollen grains in the air for Saturday will be falling but will remain in the high range. This forecast of lower pollen concentration is based on falling temperatures, rising humidity, and expected precipitation in the morning, afternoon and evening which tends to wash pollen out of the air.