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  1. UV Index Today - National and Local UV Index Forecasts

    UV Index Today provides national and local UV index forecasts for 40,000+ cities in the United States. Our forecasts include the real-time UV index, the hourly UV index, and the UV Index forecast for the …

  2. Utah Valley University | Utah Valley University

    Come As You Are Located in the heart of Utah County, Utah Valley University is committed to student success. We provide real-world learning experiences near Utah’s tech epicenter and growing job …

  3. Ultraviolet Radiation | Radiation and Your Health | CDC

    Jul 16, 2025 · Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources, such as tanning beds. While it has some benefits for people, including the creation …

  4. UV Index - National Weather Service

    A Guide to the UV Index Brochure developed by EPA for meteorologists, educators and public health officials on recommendations for reporting the UV Index.

  5. Ultraviolet - Wikipedia

    Ultraviolet radiation or UV is electromagnetic radiation of wavelengths of 100–400 nanometers, shorter than that of visible light, but longer than X-rays. Wavelengths between 10 and 100 nanometers are …

  6. ultraviolet radiation - Encyclopedia Britannica

    Jan 31, 2026 · Ultraviolet (UV) radiation is undetectable by the human eye, although, when it falls on certain materials, it may cause them to fluoresce —i.e., emit electromagnetic radiation of lower …

  7. Ultraviolet (UV) Radiation | FDA

    UV rays are strongest in areas close to the equator. Because the sun is directly over the equator, UV rays only travel a short distance through the atmosphere to reach these areas.

  8. Ultraviolet (UV) Radiation: What It Is & Its Effect on Your Skin

    Nov 16, 2022 · Ultraviolet (UV) radiation from the sun can cause wrinkles, premature aging and skin cancer. There are steps you can take to prevent sun damage from UV radiation.

  9. Live UV Index Today | Hourly Sun Safety Forecast for Your City

    Get the most accurate, real-time UV index for any city in the United States. Check the live hourly UV forecast, understand the UV scale with our detailed chart, and get essential sun safety tips to protect …

  10. Ultraviolet radiation - World Health Organization (WHO)

    Jul 24, 2025 · Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light. UV radiation comes naturally from the sun, but it …