The Infectious risk has fallen noticeably over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been trending upward over the past 12 weeks in Jefferson, West Virginia.
Pollution risk activity has been climbing over the past 12 weeks in Jefferson, West Virginia.
Weather risk activity has been trending downward over the past 12 weeks in Jefferson, West Virginia.
Last updated: July 13, 2026
Data refreshed weekly