MERCURY GOES UP AS FOG LEAVES AREA , Fog-bound for the past week by a persistent "smog" condition. condi-tion. Salt Lake shook off the gloom Wednesday and took a new lease on life with 60-degree temperatures in the offing. The 60-degree clime came . In on the wings of a southerly wind which opened up Tuesday eve-n eve-n t n g, boosting temperatures throughout the area to 20 degrees de-grees above normal. Normal for this time of year is appro xl-mately xl-mately 33--Just above freezing. Tuesday's high was 89. Rail and air travel, bogged down during the height of the fog and smoke condition, returned re-turned to ' normal ' Wednesday with the dispersal of the smog. Despite the rising temperatures tempera-tures in the valley, skiers were assured plenty of snow at Alta and Brighton ski resorts. Temperature Tem-perature at Alta Wednesday morning was 37, with roads open and In good condition. Lift line runs offered "good to poor" ski- 1 ing, while all other runs were in poor condition. All lifts and tows are operating. Touring is poor. At Brighton, all runs reportedly report-edly are in good condition, with half an inch of new snow. All roads are open.