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 …

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 …

Average UV at noon 1996-2002 (European Space Agency) The ultraviolet index, or UV index, is an international standard measurement of the strength of the sunburn -producing ultraviolet …

The UV index is a measure to help you determine the effects of the sun on outdoor activities. It is computed using forecast ozone levels, cloudiness, and elevation.

2 days ago · The UV Index is a scale that provides an indicator of the expected risk of overexposure to the sun. It is a way to quantify the strength of sunburn-producing ultraviolet …

This chart presents a detailed view of the UV Index fluctuations throughout the past year, enabling you to identify the months with lower UV levels. By observing the monthly UV trends, you can …

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, …

Dec 18, 2025 · The ozone layer effectively blocks almost all solar radiation of wavelengths less than 290 nm from reaching Earth’s surface, including certain types of ultraviolet (UV) and other …

Jul 26, 2007 · Features Parent Organizations Current UV Index Forecast (Updated Daily) UV Alert Forecast (Updated Daily) Archive of UV Index Bulletins Climatological Monthly Means Annual …

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 …