So im trying to go for a stormy skybox look with dark clouds and settled for the skybox_oki2 skybox, I apply it to my worldspawn, make the skybox brush and texture it with that texture, but when in game only the very top shows the dark cloudy oki2 skybox texture, like 1 big cloud right above the map, around the edges and on the horizon is clear blue sky.

is there any way to fix this?

So im trying to go for a stormy skybox look with dark clouds and settled for the skybox_oki2 skybox, I apply it to my worldspawn, make the skybox brush and texture it with that texture, but when in game only the very top shows the dark cloudy oki2 skybox texture, like 1 big cloud right above the map, around the edges and on the horizon is clear blue sky.

is there any way to fix this?

i can't really understand what you posted so
Press n and change the skybox in the world spawn  settings which I think you did.
But then you said you made a skybox brush. By that do you mean you put a giant caulk box around your entire map, press hollow, select the insides and give them the oki2 texture?
Did you do both of those things?

Yes i did both, but I textured the whole skybox then hollowed, so the outside isnt Caulk, is that important?

And the problem is the skybox is supposed to be dark and gloomy, but this is only applied to the very top skybrush as in directly up in game, at eye level and the horizon it is clear blue skies, which it shouldnt be...

Yes i did both, but I textured the whole skybox then hollowed, so the outside isnt Caulk, is that important?

And the problem is the skybox is supposed to be dark and gloomy, but this is only applied to the very top skybrush as in directly up in game, at eye level and the horizon it is clear blue skies, which it shouldnt be...

I was told it's important and have always done it so caulk the outside. I know what it's supposed to look like cause I'm using it lol. But I've never had that problem. If caulking it doesn't work post a pic of your world spawn settings in radiant please. Like I said I've never had the problem but I'll try my best to help you out

So in radiant press N and put in the KVP:

skyboxmodel            skybox_(name)

And around the map there needs to be a light grid(s) and a caulk box that is hollowed and that has any skyboxtexture on the inside (doesn't matter what texture cause it won't show up in game).

I caulked the outside of the skybox and still showing blue skies at eye level, Im sure it shouldn't be like this:

Thats fog, remove it in mapname_art file

Comment this line:
level thread fog_settings();

Sorted it! 

Thanks all for your help