The Infectious risk has shown little change over the last 12 weeks, with the most recent week close to the 12-week average..
Allergy risk activity has been trending downward over the past 12 weeks in Prince William, Virginia.
Pollution risk activity has been trending upward over the past 12 weeks in Prince William, Virginia.
Weather risk activity has been trending upward over the past 12 weeks in Prince William, Virginia.
Last updated: July 6, 2026
Data refreshed weekly
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