The Infectious risk has eased over the past 12 weeks, ending the period well below its earlier peak..
Allergy risk activity has been trending downward over the past 12 weeks in Chelan, Washington.
Pollution risk activity has been trending upward over the past 12 weeks in Chelan, Washington.
Weather risk activity has been trending upward over the past 12 weeks in Chelan, Washington.
Last updated: August 31, 2026
Data refreshed weekly