Two new air monitors have been installed to track air pollution in Utah. The new monitors were put in place earlier this month in Murray and Magna.
Utah Department of Environmental Quality officials say the devices will enable scientists to get the best data to better understand the full effects of air pollution.
The pollution levels on Sunday were particularly harsh with thick smog visible from the valley floor.
The department says pollution levels could improve by Tuesday.
The Salt Lake Valley typically experiences winter inversions that create small particulate pollution. Cold, stagnant air settles in the bowl-shaped mountain basins and traps emissions. The result is a brown, murky haze.
