Infectious risk activity has been increasing over the past 12 weeks in Collin, Texas.
Allergy risk activity has been increasing over the past 12 weeks in Collin, Texas.
Pollution risk activity has been decreasing over the past 12 weeks in Collin, Texas.
Weather risk activity has been decreasing over the past 12 weeks in Collin, Texas.
Last updated: May 25, 2026
Data refreshed weekly