The Infectious risk has held relatively steady over the last 12 weeks, with the most recent week close to the 12-week average..
Allergy risk activity has remained stable over the past 12 weeks in Harrison, Texas.
No Pollution activity has been reported over the past 12 weeks in Harrison, Texas.
Weather risk activity has been increasing over the past 12 weeks in Harrison, Texas.
Last updated: July 6, 2026
Data refreshed weekly