A health advisory remains in effect for Utah, Salt Lake and Davis counties after two of the areas exceeded federal pollution standards this week.
Ozone levels were higher than allowed Monday evening at a new state Division of Air Quality monitoring station in Spanish Fork.The county will run into trouble with the U.S. Environmental Protection Agency if ozone pollution remains high over the next three years. Salt Lake County exceeded the standard Sun-day.
Air quality officials advise elderly residents and those with respiratory or heart problems to stay indoors. They're also asking people to avoid driving cars.