Utah regulators are trying to educate people on the dangers of ozone, an invisible gas produced by smog that doctors say taxes the lungs of even healthy people.
The press conference took place under clear blue skies at a park in Woods Cross, with children playing nearby. It seemed like a nice day, but Director of the state’s Division of Air Quality Bryce Bird says ozone often goes overlooked because people can't see it.
In the winter, air pollution can stay trapped in the valleys of the Wasatch Front until the wind picks up and blows it away. In the summer, ozone pollution can be a problem day after day even when the wind is blowing.
Unlike particulates, which can build up for weeks in a winter inversion, new ozone is created every day by a reaction between tailpipe emissions and sunlight. Erik Crosman, a researcher in the University of Utah’s Atmosopheric Sciences program, says the wind doesn’t make much difference to pollution levels on a hot summer day.