Researchers make visible chronic air pollution afflicting North Macedonia and spark debate about how air quality could be ...

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, ...

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

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

"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 ...

Saharan dust refers to fine particles of sand and mineral dust lifted from the Sahara Desert. The dust particles are small enough to be carried by strong winds (often referred to as the trade winds) ...

Experts fear that both budget and staff cuts at the EPA will curtail the necessary air monitoring of wildfire smoke, a public health risk.

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