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London UV index

Local Time Th Jul 19 Fr Jul 20 Sa Jul 21 Su Jul 22
UV index 4 3 4 6

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: Thu, 19 Jul, 09:18 CEST



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