As humans continue to pump more gases into the atmosphere, you've probably seen air quality alerts more often, but what does ...

On Wednesday, southern Arizona had one of its first ozone alerts of the year. It will be just one of many in the coming ...

Produced primarily by the burning of fossil fuels, ammonium nitrate is a substantial portion of particulate pollution, a ...

The House and Senate both voted to loosen regulations on air pollutants like dioxin and mercury, which are associated with ...

Northern Utah is experiencing less wind and “much cooler temperatures" after a gusty weekend but will still have some ...