
UV Index Scale | Sun Safety | US EPA
Dec 28, 2016 · A UV Index reading of 6 to 7 means high risk of harm from unprotected sun exposure. Protection against skin and eye damage is needed. Reduce time in the sun between 10 a.m. and 4 p.m. If outdoors, seek shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
UV Index 4 - The UV Index Scale
UV Index 4 represents a moderate level of UV radiation, and it's important to follow appropriate sun safety measures to protect yourself from the harmful effects of the sun's rays. Discover what a UV index 4 reading means on the UV index scale and what to do to protect yourself.
The UV Index Explained - WebMD
Feb 12, 2024 · Too much UV light can burn your skin in the short term and raise your risk for skin cancer in the long term. UV index is a color-coded scale that gives you an idea of your UV ray exposure.
UV Index Scale | US EPA
Feb 4, 2013 · The UV Index scale used in the United States conforms with international guidelines for UVI reporting established by the World Health Organization. Learn how to read the UV …
The UV Index: How Much Is Your Skin in Danger? - Weather.com
Jun 13, 2018 · When the UV Index is 9, for example, you can get a sunburn in 20 minutes or less. Even when the UV Index is only 4, sunburn is still possible within 50 minutes. Sunburn can still occur when...
The UV index and sunburn risk - Cancer Research UK
Nov 30, 2023 · When the UV index is 3 (moderate) or above, the sun is strong enough to cause damage for some skin types so think about protecting your skin, especially if you burn easily. UV 1-2 – Low levels. No sun protection needed. UV 3-7 – Moderate to high levels. Be sun safe and consider protecting your skin. UV 8-9+ – Very high levels.
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 next five days.
UV Index - Cancer Council
What is the UV Index? The UV Index is a tool you can use to protect yourself from UV radiation. It tells you the times during the day that you need to be SunSmart. The UV Index divides UV radiation levels into: low (1-2) moderate (3-5) high (6-7) very high (8-10) extreme (11 and above).
What Is the UV Index Scale? | The Old Farmer's Almanac
Mar 17, 2025 · The Sun is strong enough to damage skin and cause sunburn. Check out the UV index scale, which tells you how fast your skin will burn without protection, and find the latest UV forecast for your area.
UV Index 4 - UV Rating
The UV Index of 4 indicates a moderate level of UV radiation intensity, suggesting that the sun's rays are moderately strong. This level is typically observed during late morning and early afternoon when the sun is relatively high in the sky.