thermodynamics - Physical state of Fog

Is Fog solid or gaseous mater? Can it reach the triple point of water? As per my research, fog rises only if its density is less than that of water as water vapor does, a fact that is forcing me to classify fog as a gaseous mater. Yet the only condition for fog to exist is when temperature is below the triple point of water,where we prospect to have liquid on transition to solid. This fact violates the idea for the triple point of water.