The Infectious risk has held relatively steady over the last 12 weeks, with high levels persisting through the latest week..
Allergy risk activity has stayed relatively flat over the past 12 weeks in Houston, Texas.
No Pollution activity has been reported over the past 12 weeks in Houston, Texas.
Weather risk activity has been trending upward over the past 12 weeks in Houston, Texas.
Last updated: July 6, 2026
Data refreshed weekly