From the WBB building looking towards downtown Salt Lake the horizon looks quite hazy likely form the smoke. These dry conditions are not favorable for fires. Already, fires have burned in Canada, Alaska, California, and now Utah. Smoke form these fires has transported into Utah over the last two days. A smoke map shows the location of "hot spots" and the extent of the smoke.
True color images from MODIS show the smoke in California and Alaska from NASA WorldView