This plug-in seems to be very epic. I was searching for this. A well gradient of layers in terms of lightnings of the sky, clouds and visibility. Does this plug-in also have an algortihm that determines the amount of grey haze in the air with respect to the local humidity and temperature? For example, in very hot countries the visibility is poor. Despite 'clear' skies and beautiful weather. When at a certain altitude above these kind of countries (especially summers obviously) you see a lot of haze and sometimes combined with smog above large® cities.