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North America

San Francisco Day 5 to 8 UV index

Local Time We Jun 23 Th Jun 24 Fr Jun 25 Sa Jun 26
UV index 9 9 9 9

The strength of the sun's ultraviolet (UV) radiation is expressed as a Solar UV Index or Sun Index.The UV Index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the two weeks around the summer solstice). Indices of 9 and 10 are common in the Mediterranean area. The Sun Index forecast refers to the daily maximum.

Last updated: Sa, 19 Jun, 19:07 BST


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