OctaneRender® for Unreal® Engine provides numerous tools for rendering atmospheric environments. The Octane Viewport is also capable of rendering most of the features associated with the BP_Sky_Sphere (figure 1). However, OctaneRender cannot render the Atmospheric Fog, Exponential Height Fog, Sky Atmosphere, or Volumetric Clouds, actors.
Figure 1: The BP_Sky_Sphere actor rendered in the Octane Viewport
The Environment lighting parameters are located in the Environment rollout of the Octane Render Target Actor, in the Details panel (figure 2).
Figure 2: Accessing the Environment parameters in an Octane Render Target Actor's Details panel