The Infectious risk has held relatively steady over the last 12 weeks, with moderate levels persisting through the latest week..
Allergy risk activity has been trending upward over the past 12 weeks in Grafton, New Hampshire.
No Pollution activity has been reported over the past 12 weeks in Grafton, New Hampshire.
Weather risk activity has been trending downward over the past 12 weeks in Grafton, New Hampshire.
Last updated: August 31, 2026
Data refreshed weekly