Weather tools

UV Index Explainer

Provides information about the UV Index, a measure of the strength of ultraviolet (UV) radiation from the sun at a particular place and time.

Before you use this tool

Use this if

  • Provides information about the UV Index, a measure of the strength of ultraviolet (UV) radiation from the sun at a particular place and time.
  • You want a calculation that exposes its formula: N/A

Skip this if

  • You need an official emergency alert or life-safety instruction.
  • You need a certified professional forecast instead of a calculator estimate.
When to use or skip it

Use this if

  • Provides information about the UV Index, a measure of the strength of ultraviolet (UV) radiation from the sun at a particular place and time.
  • You want a calculation that exposes its formula: N/A

Skip this if

  • You need an official emergency alert or life-safety instruction.
  • You need a certified professional forecast instead of a calculator estimate.