Federal departments faced a 5 p.m. deadline Tuesday to cease spending on any financial assistance programs, according to a ...

The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

Maricopa and Pinal counties both failed to meet federal air quality standards and will now become part of an Arizona State ...

In the wake of the Palisades and Eaton fires, concerns about air quality across the county have been on the rise.

Acting EPA Administrator James Payne sent an email to members of the agency's Science Advisory Board and the Clean Air ...

Delhi's pollution levels remain high with PM10 and PM2.5 concentrations increasing in recent years. Despite government ...

You'll get access to an ad-free website with a faster photo browser, the chance to claim free tickets to a host of events ...

Air quality in San Diego is improving, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to your health. By the numbers: The average percentage of ...

Studies show prolonged exposure to poor air quality increases the risk of chronic conditions such as asthma and ...