The Infectious risk has trended steadily upward over the last 12 weeks, with the most recent week notably higher than earlier in the window..
Allergy risk activity has been trending downward over the past 12 weeks in Yamhill, Oregon.
Pollution risk activity has been climbing over the past 12 weeks in Yamhill, Oregon.
Weather risk activity has been trending upward over the past 12 weeks in Yamhill, Oregon.
Last updated: August 24, 2026
Data refreshed weekly