This may be my favorite image from the Fourth of July at the Baha'i Temple. See the rest of the images, here. After the fireworks display ended, the wind off of the lake blew the smoke over the temple. The entire area was filled with an eerie, magical feel.
Very often, you're looking for a clear evening to do night photography. But sometimes smoke or mist adds an element of atmosphere to the shot. Next time you're out shooting in smoke or mist, look for streetlights or spotlights cutting through the night. The particulates suspended in the air will reflect some of the light back to your eye defining the beam of light through the night. Kinda like when you waved your flashlight through the smoke of a campfire like a lightsaber. Right?