Cold surfaces, tiny bits of dirt, and other ice crystals are all ideal for this. On very cold days during the winter, you may see icicles hanging from yourroof. These are created by water droplets ...

If you can see water hanging in the air, it must be made of water droplets or ice crystals and so is not water vapor. Steam or mist is made of tiny water droplets. Fog can be made of ice crystals ...