SALT LAKE CITY (AP) -- Starting this weekend, state officials will be on the lookout for unhealthy pollution in the air.
The Utah Division of Air Quality on Saturday begins its annual Red Light Green Light program that monitors air quality and provides guidance about when residents should stay indoors, drive less and limit wood burning.
Through the winter, state officials will monitor air pollution hourly and provide three-day forecasts on the division's Web site.
When conditions are green, wood burning is allowed. Yellow urges residents to voluntarily curb wood burning and driving. Red means conditions are becoming unhealthy and burning is prohibited. It also means the elderly, children and people with respiratory problems should stay inside.
Last year, there were 13 red days in Salt Lake and Davis counties.
(Copyright 2008 by The Associated Press. All Rights Reserved.)