This pack includes morning, day and night skyboxes and also beautiful weather and some bad weather skyboxes. Cube maps for each skybox are also defined and included.
Each of the skyboxes contains 6 textures (Top, Down, Left, Right, Front and Back) with 1024 x 1024/each texture. It is compatible with standard Unity 3D skybox shader. All materials are defined so you just can put it into the scene after import and enjoy it.