What Is The Uv Index?

[Rev. Green]

UV 2 is benign, UV 4 begs sun cream, UV 6 requires respect, but is the scale linear (like Volts), logarithmic (like dB or Richter), linear with an offset base (like Celsius or British dress sizes); arbitrary (like the Beaufort scale); or haphazard (like star types: O, B, A, F, etc.)?

[bednobs]

google is your friend in this case https://en.wikipedia.org/wiki/Ultraviolet_index
so in summary, linear

[dannyk13]

https://www.metoffice.gov.uk/public/weather/uv-index-forecast/#?tab=map&map=MaxUVIndex&zoom=6&;lon=-4.00&;lat=54.06&;fcTime=1521147600