The NOAA UV Index is a measure of the strength of the sun’s ultraviolet (UV) radiation at a particular location and time. UV radiation is a type of electromagnetic radiation that can damage the skin and eyes. The UV Index is used to forecast the risk of overexposure to UV radiation and to provide guidance on sun protection measures.
The UV Index is calculated using data from ground-based sensors and satellite measurements. It is reported on a scale of 0 to 11+, with higher values indicating a greater risk of UV damage. The UV Index can vary depending on a number of factors, including the time of day, the season, the latitude, the altitude, and the amount of cloud cover.
