The Infectious risk has trended downward over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been trending downward over the past 12 weeks in Chelan, Washington.
Pollution risk activity has been climbing over the past 12 weeks in Chelan, Washington.
Weather risk activity has been climbing over the past 12 weeks in Chelan, Washington.
Last updated: July 6, 2026
Data refreshed weekly