The Infectious risk has fallen noticeably over the last 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been decreasing over the past 12 weeks in Washington, Oregon.
No Pollution activity has been reported over the past 12 weeks in Washington, Oregon.
Weather risk activity has been increasing over the past 12 weeks in Washington, Oregon.
Last updated: July 6, 2026
Data refreshed weekly