The Ultraviolet (UV) Index predicts the ultraviolet radiation levels on a 1-11+ scale. The UV Index provides a daily forecast of the expected intensity of UV radiation from the sun. To assist users in utilizing the UV Index forecast, EPA provides two options for viewing this information with your mobile device.
* To install the UV Index App on an Android device outside of Android’s App Market, you will need to enable Unknown Sources. On your Android phone, go to Settings -> Application Settings and check the Unknown Sources checkbox. After the UV Index App is downloaded and installed, you may un-check the Unknown Sources checkbox.