No, because the sun at low angles passes so much atmosphere, that filters most out.
The exposure angle of your body also has a effect, but much weaker.
No, because the sun at low angles passes so much atmosphere, that filters most out.
The exposure angle of your body also has a effect, but much weaker.
Today in Stockholm the UV index peaked at 6.3. And it is just a few days after the summer solstice, and the sky was largely clear today.
(Yet I can feel that I got slight sunburn being out for about 15 minutes today. So you still need to be careful.)
In winter the UV index might often peak at 1-2 on a clear day.