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Scott G Winterton, Deseret News
Mount Timpanogos rises up out of the inversion with South Mountain homes in the foreground Sunday, Dec. 18, 2011.

Always impressive, though sometimes depressing, is the view from above the inversion, as seen Sunday from South Mountain looking west.

Mount Timpanogos, right, and homes on South Mountain rise above the mucky air. A snowstorm Wednesday night should clear the air for several days until haze builds again in time for Christmas.