The Infectious risk has trended steadily upward over the last 12 weeks, with the most recent week notably higher than earlier in the window..
Allergy risk activity has been climbing over the past 12 weeks in Plymouth, Massachusetts.
No Pollution activity has been reported over the past 12 weeks in Plymouth, Massachusetts.
Weather risk activity has been decreasing over the past 12 weeks in Plymouth, Massachusetts.
Last updated: August 24, 2026
Data refreshed weekly