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UV Radiation and the effects it has on your skin (Ultraviolet radiation is…

- - - - UVC rays have more energy than the other types of UV rays. Fortunately, because of this, they react with ozone high in our atmosphere and don’t reach the ground, so they are not normally a risk factor for skin cancer.
- - - - Time of day: UV rays are strongest between 10 am and 4 pm.
      - Season of the year: UV rays are stronger during spring and summer months. This is less of a factor near the equator.
      - Distance from the equator (latitude): UV exposure goes down as you get farther from the equator.
      - Altitude: More UV rays reach the ground at higher elevations.
      - Clouds: The effect of clouds can vary, but what’s important to know is that UV rays can get through to the ground, even on a cloudy day.
      - Reflection off surfaces: UV rays can bounce off surfaces like water, sand, snow, pavement, or even grass, leading to an increase in UV exposure.
      - Contents of the air: Ozone in the upper atmosphere, for example, filters out some UV radiation.