The Infectious risk has climbed over the past 12 weeks, with the most recent week notably higher than earlier in the window..
Allergy risk activity has stayed relatively flat over the past 12 weeks in Union, South Carolina.
No Pollution activity has been reported over the past 12 weeks in Union, South Carolina.
Weather risk activity has been climbing over the past 12 weeks in Union, South Carolina.
Last updated: August 24, 2026
Data refreshed weekly