The Infectious risk has risen noticeably over the last 12 weeks, ending the period at its highest level..
Allergy risk activity has been trending downward over the past 12 weeks in Clark, Washington.
Pollution risk activity has been increasing over the past 12 weeks in Clark, Washington.
Weather risk activity has been trending upward over the past 12 weeks in Clark, Washington.
Last updated: August 24, 2026
Data refreshed weekly