What does a high UV index indicate?

A high UV index indicates high levels of ultraviolet (UV) radiation reaching the Earth's surface. The UV index is a standardized measure of the strength of UV radiation in a specific area at a given time, with higher values signifying a greater potential for skin damage and increased risk of harm from sun exposure. When the UV index is high, it is advisable for individuals to take protective actions, such as wearing sunscreen, hats, and protective clothing, or seeking shade, particularly during midday hours when UV radiation intensity is greatest. Understanding the UV index is crucial for promoting skin safety and reducing the likelihood of sunburn and long-term skin damage.