The Infectious risk has shown little change over the past 12 weeks, with high levels persisting through the latest week..
Allergy risk activity has been easing over the past 12 weeks in Clarke, Virginia.
Pollution risk activity has been climbing over the past 12 weeks in Clarke, Virginia.
Weather risk activity has been increasing over the past 12 weeks in Clarke, Virginia.
Last updated: July 6, 2026
Data refreshed weekly