Of course bad air pollution is a concern, especially for parents. However, no matter how many regulations are made about the stuff, there is no way to get rid of all of it. One thing for sure is that when a city like Salt Lake City develops air pollution, it is usually because there is a temperature inversion, and also, when the city is built in a bowl and no wind is blowing, the stuff will hang around in the air.
We would need to stop living to stop the pollution. Also, the most damaging substance for lungs seems to be ozone, which is produced primarily by solar radiation — try regulating that. Is everyone willing to stop driving their cars — no trucks or buses or trains or airplanes. No cigarette smoking. In other words, life would necessarily have to stop during the period of the inversion. And nobody would be able to regulate everything that produces any kind of pollutant. So, please don't blame Gov. Gary Herbert for not asking for regulations to control air pollution.