The Infectious risk has shown a gradual decrease over the past 12 weeks, with the most recent week notably lower than earlier in the window..
Allergy risk activity has been decreasing over the past 12 weeks in Harrison, Texas.
Pollution risk activity has been easing over the past 12 weeks in Harrison, Texas.
Weather risk activity has been easing over the past 12 weeks in Harrison, Texas.
Last updated: August 24, 2026
Data refreshed weekly