Pollen Alerts For Silverton, ID

Pollen Index: 9.1 Pollen Level: medium-high Predominant Pollen: Alder, Ash and Birch. The quantity of pollen grains in the air for Wednesday will be higher than they were today in the high range. Since the weather has a major influence on pollen dispersal, this increase is due in part to higher temperatures and the lower dewpoint.