Sun rays are more harsh during 10am to 4pm.
So, most of the skin problems are caused by sun rays. The main reason for 90% of visible signs of aging is sun. 80% of UVA and UVB rays can pass through clouds and penetrate skin easily.
One of five Americans are suffered from skin cancer. In 2010, around 8,700 deaths occurred due to melanoma. Most of them were men(5,670) and the remaining 3,030 were women.
The best preventive methods is applying a sunscreen with an SPF 15 or higher. Sometimes reapplying after two hours is required after sweating and swimming. Another useful step to follow is 5 minutes of bathing, an optimum length saves body's natural oils.