Sky Master is a Dynamic Sky, Weather & Cloud solution for Unity, with support for all Unity versions/platforms and is ideal for both mobile and desktop use.
Features
– NEW(v1.5)-Complete integration with Unity 5 and all its features (IBL, GI, Skybox) with the new skybox mode.
– NEW(v1.5)-Artistic dynamic effects in sky shading (e.g. heat haze shimmering, sepia)
– NEW(v1.5)-New performance oriented shader & asset bundle & more ready to use prefabs.
– NEW(v1.5)-Volumetric scatter fog shading for mesh and Unity terrains
–Â REAL SKYÂ – Physically based atmospheric scattering, for realistic sky rendering & Artistic special effects.
–Â REAL CLOUDSÂ – Dynamic cloud formations, affected by season and wind. Volumetric particle clouds & fog. Fly through ready.
–Â REAL SUN RAYSÂ – Dynamic sun beams, with smooth transitions & occlusion system.
–Â REAL WEATHERÂ – Seasonal control of weather effects, with smooth transitions
–Â REAL STORMÂ – Heavy storm simulation, with dynamic cloud fronts, lightning & lighting effects
–Â REAL TORNADOÂ – Dynamic controllable tornados
–Â REAL VOLCANOÂ -realistic volcanic erruption, smoke & lava flow.
Original_Link: https://assetstore.unity.com/packages/tools/particles-effects/sky-master-28331