This are a part of the new Foggy Weather 1.6: Foggy Weather – ATS Edition.
This modification brings you:
– Foggy/smoggy weather near west coast
– Foggy weather in desert
– Sandstorms in desert
– Cloudy/light rainy weather near west coast and desert
– Realistic temperature while fog, smog or sandstorms
It requires American Truck Simulator (1.0.0s) and must be compatible with all future maps.