The Infectious risk has eased over the past 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 King, Washington.
Pollution risk activity has been climbing over the past 12 weeks in King, Washington.
Weather risk activity has been climbing over the past 12 weeks in King, Washington.
Last updated: August 24, 2026
Data refreshed weekly