Low Covid-19 risk in Harford, Maryland.
Low Flu risk in Harford, Maryland.
Low Rsv risk in Harford, Maryland.
Low Infectious risk in Harford, Maryland.
Low Allergy risk in Harford, Maryland.
Low Pollution risk in Harford, Maryland.
Low Weather risk in Harford, Maryland.
Last updated: April 20, 2026
Data refreshed weekly