Low Covid-19 risk in Mercer, West Virginia.
Moderate Flu activity in Mercer, West Virginia.
Low Rsv risk in Mercer, West Virginia.
Low Infectious risk in Mercer, West Virginia.
Very high Allergy risk in Mercer, West Virginia.
Low Pollution risk in Mercer, West Virginia.
Low Weather risk in Mercer, West Virginia.
Last updated: April 20, 2026
Data refreshed weekly