2016年12月28日 · 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.

2018年6月13日 · 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...

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.

A UV Index reading 11 or higher puts you in a very dangerous spot for sunburn with damage occurring in less than 10 minutes if unprotected. At this level it is best to avoid all sun exposure between 10AM and 4PM. Find out the UV Index Level near you and protect yourself from damaging skin exposure. Research has shown that getting severe sunburn ...

2013年2月4日 · 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 index Scale to help you avoid harmful exposure to UV radiation.

2024年2月12日 · 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.

The UV Index chart shows how quickly you will burn your skin and how often to use sunscreen protection when you are outside. Also, see the latest UV forecast from The Old Farmer's Almanac.