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North America

Halifax Halifax Edmonton Edmonton Winnipeg Winnipeg Whitehorse Whitehorse Arviat Arviat Makkovik Makkovik Yellowknife Yellowknife Inuvik Inuvik Ivujivik Ivujivik Moosonee Moosonee Ottawa Ottawa Chicago Midway Intl. Airport Chicago Midway Intl. Airport Eureka Eureka Qikiqtarjuaq Qikiqtarjuaq Thompson Thompson Stefansson Is Stefansson Is Narsarsuaq Narsarsuaq Victoria CS Victoria CS uv index  North America Forecast maps
Last updated: Tu, 26 Oct, 22:21 BST

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.