Sun Safety Monthly Average UV Index
The maps below show monthly average UV Index values for the United States. Learn more about the UV Index.
US EPA
United States Environmental Protection Agency
An official website of the United States government.
This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »
