This website uses cookies. Read about how we use cookies. OK



Seattle Seattle Portland Portland San Francisco San Francisco Reno Reno L.Angel. City Tucson Tucson Las Vegas Albuquerque Albuquerque Denver Denver Casper Casper Boise Boise Great Falls Great Falls Salt Lake City Salt Lake City Billings Billings Medford Medford Page Page uv index  Antarctica Forecast maps
Last updated: Tue 17 Sep 19:35 NZST

The strength of the sun's ultraviolet (UV) radiation is expressed as a Solar UV Index or Sun Index. Indices of 9 and 10 are common in the Mediterranean area. The Sun Index forecast refers to the daily maximum.