We are improving our website to help you find what you're looking for. During this transition some URLs may change. Learn more...

A Guide to the UV Index

May 2004 guide to the revised UV Index and how it can help Americans plan outdoor activities to avoid overexposure to UV radiation and thereby lower their risk of adverse health effects.

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.