Infectious Diseases prevalence is Low in Memphis and Knoxville, and Moderate in Nashville.
Allergy prevalence is Moderate in Memphis and Knoxville, and Low in Nashville.
Pollution prevalence is Low in Memphis and Knoxville, and Moderate in Nashville.
Severe Weather prevalence is Low in Memphis, Knoxville, and Nashville.
Last updated: November 9, 2026
Data refreshed weekly