I hope the people of Salt Lake City are smarter than there politicians. The bad air quality comes from one major source. That is U.S. Magnesium Corporation of Utah. (Mag.Corp.) If you don't know where it is, look on the West side of the Great (polluted) Salt Lake. When there is no wind or wind from the West, Northwest or North, The pollution from Mag. Corp. settles over the Basin. When there is wind from other directions the pollution is blown into Idaho.
This pollution is made up of heavy metal that is burned from magnesium and sent into the air. Since it is heavy metal the smoke pollution dose not rise more than a couple thousand feet off the valley floor, which means that it moves around at low elevations. Heavy metal burned are Arsenic, Lead, Zinc, and other dangerous metals.
Why dose this area have a high concentration of Cancer? Pollution with metal extracts.
Go to Alta and look down on it. People in Tooele county see it every time the wind changes. The governor and EPA, will not touch the problem, so don't expect to get answers or solutions from them. If you want to see for your self just travel or fly over Mag. Corp. during an inversion.
Question: If autos cause the bad air how is that the pollution starts over the North end of the Salt Lake spreads to Cache County then South into the Wasatch Front?
Answer: There are a lot of cars driving on the salt in the Salt Lake!
Don't expect true answers from Weather people, or Media, TV or newspaper people. Mag. Corp. is off limits to solving the real air pollution in Salt Lake City or the Basin area. Good Luck!!!! on this one. Tom Olson of Tooele, Utah