Potentially hazardous air quality has gripped Phoenix, Arizona, as a combination of stagnant weather, windblown dust, and warm temperatures fueled a rise in PM10 pollution, prompting hazy skies and ...

Tools to address PFAS pollution are limited. Here's what researchers are learning about how these chemicals travel through ...

About 350 residents packed a public meeting Monday night regarding an Air Quality Permit for a proposed power plant near the towns of Davis and Thomas. The state Department of Environmental Protection ...

A thick haze blanketed the Valley on Tuesday, reducing visibility and creating hazardous air quality conditions. The dust, ...

According to the Maricopa County Air Quality Map, several parts of the Valley had an air quality level listed in the "very ...

Skies over metro Phoenix were hazy and gray Tuesday morning. Here's what is causing poor air quality in Phoenix and when it ...

"Avoid all physical activity outdoors," the EPA advises at this level. According to the EPA's map, Picture Rocks and Marana ...

Air quality in confined spaces can change in an instant—and assumptions can be costly. Here’s why continuous monitoring and ...

When Xcel Energy stopped burning coal at its Valmont Power Station in 2017, it left 1.6 million tons of toxic coal ash on the ...

Wayne Disposal Inc. seeks a 23% increase in its hazardous waste storage capacity, taking elevated radioactivity waste among ...

A Code Orange is triggered when the air quality index reaches a value of 101 to 150, meaning it’s “unhealthy for sensitive groups.” The reading in parts of the metro area was 115 at 6 p.m. Anything ...