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United States Environmental Protection Agency
SunWise Program
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UV
Index
UV Index
Scale
How UV Index is
Calculated
Health Effects of
Overexposure
UV Index
Resources

UV IndexUV Index Scale

The UV Index scale used in the United States conforms with international guidelines for UVI reporting established by the World Health Organization. What follows is a description of each UV Index level and tips you can give to help people avoid exposure.

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(Scroll your mouse over the UV index to learn more about each UV level)
 
UV Index
UV Index 11+
UV Index 8-10
UV Index 6-7
UV Index 3-5
UV Index 2 or less

 

 

UV Index

Scroll your mouse over the UV index
to learn more about each UV level

 

 
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