Another simple partly cloudy sky:

The sky is formed by a blue plane which is decorated by some clouds. The clouds also become realisticly smaller at the horizon! And also here the realistic fog covers the black line at the horizon - the gap between the ground plane and the sky plane.
The only problem here: - see above!

// sky --------------------------- plane{<0,1,0>,1 hollow texture{ pigment{ bozo turbulence 0.92 color_map { [0.00 rgb <0.2, 0.3, 1>*0.5] [0.50 rgb <0.2, 0.3, 1>*0.8] [0.70 rgb <1,1,1>] [0.85 rgb <0.25,0.25,0.25>] [1.0 rgb <0.5,0.5,0.5>]} scale<1,1,1.5>*2.5 translate<1.0,0,-1> }// end of pigment finish {ambient 1 diffuse 0} }// end of texture scale 10000 }// end of plane // fog on the ground ------------- fog { fog_type 2 distance 50 color White fog_offset 0.1 fog_alt 1.5 turbulence 1.8 } //--------------------------------

A partly cloudy sky with realistic horizon.
Description of this scenery for POV-Ray

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