Allegheny County no longer has dirty air, according to US environmental regulators

US environmental regulators have approved Pennsylvania's request to declare Allegheny County's air clean enough to meet federal standards for fine particulate matter. This means the county will no longer face federal mandates to reduce air pollution.

For years, Allegheny County has been under federal mandates to clean up its air. This approval means those mandates are now lifted. The county will no longer be required to submit plans or take specific actions to reduce fine particulate matter, even if local air quality remains a concern for residents.