In dreams the air appears as a breeze or wind, then it means youre becoming visible and with some coloration. So if the air is dirty, almost reddish, as it is announcing a storm, that means possible disagreement. And if its a strong wind it may try to tell us that the time to make decisions on matters that we have neglected has come. However, when the breeze is smooth and gentle it is interpreted as omen of a prosperous period of time, a happy journey or the recovery of something lost. Some experts take into account the temperature in the dream, and if you are feeling a cold wind, thats interpreted as a possible loss of affection or friends.
Read more about dreaming of Air in other dream meanings interpretations.