Wasatch Front will see temporary relief from pollution before next week’s inversion sets in

Air quality in Salt Lake County was upgraded from the red zone to orange Thursday morning — meaning that the air is unhealthy for sensitive groups, rather than everybody — thanks to a weak cold front that cleared out much of the fog in valleys along the Wasatch Front.The National Weather Service is predicting a cold front beginning Friday night that will bring a quick breath of fresh air to valleys as the weekend begins.It will push pollution out, the NWS says, and bring a chance of