This map shows the current Northern Wasatch Front ozone nonattainment area, left, next to the proposed map, right. The change would put the US Magnesium plant in Tooele County in the nonattainment ...

On December 9, 2024, EPA determined that the Northern Wasatch Front ozone nonattainment area failed to attain the 2015 ozone NAAQS of 70 parts per billion (ppb) by the applicable attainment date ...

The federal health standard for ambient ozone concentrations is 70 parts per billion (ppb), a threshold frequently breached on summer afternoons on the Wasatch Front and in the winter in the Uinta ...

Though there was noticeably less winter inversion along the Wasatch Front this year due to the historically wet winter, Utah's air quality still ranks among the country's worst.

During a Tuesday legislative briefing on air quality rules and potential regulations to come, some members of Utah’s Federalism Commission questioned the ways to meet the requirements of the U.S ...

He said 83% of the state’s ozone comes from elsewhere — what is known as drift — while 17% of the ozone is from Wasatch Front. Of that 17%, 8% comes from lawn and garden equipment.