The Infectious risk has shown little change over the past 12 weeks, showing no notable shift in recent weeks..
Allergy risk activity has been trending downward over the past 12 weeks in Essex, Massachusetts.
Pollution risk activity has been increasing over the past 12 weeks in Essex, Massachusetts.
Weather risk activity has been climbing over the past 12 weeks in Essex, Massachusetts.
Last updated: July 6, 2026
Data refreshed weekly