Pollen Alerts For Crater Lake Natl Park, OR

Pollen Index: 9 Pollen Level: medium-high Predominant Pollen: Oak, Grass and Mulberry. Based on past pollen counts and expected weather conditions, pollen levels for Sunday will be falling but will remain in the high range. This relief in pollen levels is caused in part by falling temperatures, rising humidity, and expected precipitation in the evening which tends to wash pollen out of the air.