What can contribute to increased UV exposure aside from altitude?

Increased UV exposure can be influenced by several factors, and in this case, all of the listed options—time of day, weather conditions, and skin type—play a significant role.

Time of day is critical because UV radiation from the sun is usually at its peak between 10 a.m. and 4 p.m. During these hours, the sun is higher in the sky, leading to stronger and more direct UV rays. Understanding this helps individuals plan their sun exposure wisely to minimize risk.

Weather conditions, such as cloud cover or reflective surfaces, can also affect UV exposure. Interestingly, up to 80% of UV rays can penetrate through clouds, meaning that even on overcast days, individuals can still be exposed to harmful UV radiation. Additionally, surfaces like water, sand, and snow can reflect UV rays, further increasing exposure.

Skin type is another factor, as individuals with lighter skin tones generally have less melanin, which provides less natural protection against UV rays. They are often more susceptible to UV damage, making awareness of skin type critical in determining appropriate protection measures.

Considering these factors collectively highlights the complexity of UV exposure and emphasizes the need for protective measures such as sunscreen, clothing, and seeking shade during peak hours.