The Infectious risk has shown a gradual decrease over the last 12 weeks, ending the period well below its earlier peak..
Allergy risk activity has been decreasing over the past 12 weeks in Mason, West Virginia.
Pollution risk activity has been increasing over the past 12 weeks in Mason, West Virginia.
Weather risk activity has been increasing over the past 12 weeks in Mason, West Virginia.
Last updated: July 13, 2026
Data refreshed weekly