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Anyone working outdoors is exposed to the sun’s ultraviolet (UV) rays, even on cloudy days. UV rays are a part of sunlight that is an invisible form of radiation.

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Suggested citation
NIOSH [2010]. NIOSH fast facts: Protecting yourself from sun exposure. Cincinnati, OH: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2010-116.
Printed copies
This resource can be ordered as a professionally printed material and delivered directly to your location. To place a request, email pubstaft@cdc.gov.