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When the UV index is presented on a daily basis, it represents UV intensity around the sun's highest point in the day, called solar noon, halfway between sunrise and sunset. This typically occurs between 11:30 and 12:30, or between 12:30 and 13:30 in areas where daylight saving time is being observed.
Highest ultraviolet index measured: On 29 December 2003, a UV index of 43.3 was detected at Chile/Bolivia's Licancabur volcano, at 19,423 feet (5,920 m) altitude. A light-skinned individual in such conditions may experience moderate sunburn in as little as 4 minutes.
See Ultraviolet index. I expect the UV Index at any geographical position to be at its annual highest value when the sun is at the greatest elevation - the summer solstice. Dolphin (t) 16:27, 13 February 2024 (UTC)
The atmosphere blocks about 77% of the Sun's UV, when the Sun is highest in the sky (at zenith), with absorption increasing at shorter UV wavelengths. At ground level with the sun at zenith, sunlight is 44% visible light, 3% ultraviolet, and the remainder infrared.
Would be really helpful for Wikipedia to have a table of country rankings of average UV index. From highest to lowest. 49.180.158.253 00:56, 5 ...
Using satellite data, measurements from the European Space Agency produce similar maps expressed in units of the widely followed UV Index, for locations around the world. [27] Effects of UV-radiation at high latitudes, where snow stays on the ground into early summer and the sun then remains at a low position even at its zenith, have been ...
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The highest recorded temperature in the state of New Jersey was 110° on July 10, ... Source 2: UV Index Today (1995 to 2022) [11] Climate data for Newark, ...