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  2. Ultraviolet index - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_index

    The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet (UV) radiation at a particular place and time. It is primarily used in daily and hourly forecasts aimed at the general public. The UV index is designed as an open-ended linear scale, directly proportional to the ...

  3. List of weather records - Wikipedia

    en.wikipedia.org/wiki/List_of_weather_records

    The warmest day on record for the entire planet was 22 July 2024 when the highest global average temperature was recorded at 17.16 °C (62.89 °F). [ 20 ] The previous record was 17.09 °C (62.76 °F) set the day before on 21 July 2024. [ 20 ] The month of July 2023 was the hottest month on record globally. [ 21 ]

  4. Ultraviolet - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet

    Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and ...

  5. Should You Tan When the UV Index Is High? What ... - AOL

    www.aol.com/tan-uv-index-high-dermatologists...

    Over time, tans and sunburns can raise the risk of developing mutations in skin cell DNA that can lead to skin cancer. “The more times you get sunburned, the higher your risk,” Elizabeth Bahar ...

  6. TikTok’s ‘UV Index Tanning’ Craze Can Age Your Skin and ...

    www.aol.com/tiktok-uv-index-tanning-craze...

    The higher the UV index, the higher the risk for skin cancer. The reality is the higher the UV index reading, the less time it takes for the skin to get burned and the greater the risk of harm ...

  7. Health effects of sunlight exposure - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_sunlight...

    Exposure of skin to ultraviolet radiation from sunlight presents both positive and negative health effects. On the positive side, UV exposure enables the synthesis of vitamin D3, which is essential for bone health [1] and potentially plays a role in inhibiting certain cancers. [2][3] While vitamin D can also be obtained through dietary ...

  8. Arizona weather forecast: More record-breaking temps in Phoenix

    www.aol.com/news/arizona-weather-forecast-more...

    At 115pm, Phoenix Sky Harbor has reached 109°F. This breaks the daily record of 108°F set in 1989. This continues a string of record breaking days that will continue through early next week.

  9. Sunburn - Wikipedia

    en.wikipedia.org/wiki/Sunburn

    Sunburn is a form of radiation burn that affects living tissue, such as skin, that results from an overexposure to ultraviolet (UV) radiation, usually from the Sun. Common symptoms in humans and other animals include red or reddish skin that is hot to the touch or painful, general fatigue, and mild dizziness.