The Infectious risk has risen noticeably over the past 12 weeks, ending the period at its highest level..
Allergy risk activity has been climbing over the past 12 weeks in Washington, Virginia.
No Pollution activity has been reported over the past 12 weeks in Washington, Virginia.
Weather risk activity has been trending upward over the past 12 weeks in Washington, Virginia.
Last updated: August 24, 2026
Data refreshed weekly