What time of day is UV radiation generally strongest?

UV radiation is generally strongest during midday. At this time, the sun is at its highest point in the sky, allowing UV rays to reach the surface more directly. This position minimizes the atmosphere's filtration effect, meaning that there is less distance for UV rays to travel through the atmosphere before they reach the ground. As a result, during midday—typically between 10 a.m. and 4 p.m.—individuals are exposed to the highest levels of ultraviolet radiation, which can significantly contribute to skin damage and increase the risk of skin cancer. Understanding this information is crucial for tanning effectiveness and safety, as well as for protecting skin health during sun exposure.