How to make skybox in Unity 5.0

I am trying to make my zombie game. Now I need grey sky and in Unity 5.0 there isn’t any default skyboxes (only 1). What is easiest way to make my own skybox from downloaded image ? Thanks!

You just create a new material and set it’s shader property to “Skybox” and choose the type you want.

Then you can simply add the textures to it and apply it either to a “Skybox” component on an object(which you can find under “Component” - “Rendering” - “Skybox”).

Or you can add it to the scene itself by going to (“Window” - “Lighting”) and set the material under the “Skybox” property there!