Air quality is a concern in Allegheny County, with various locations in the county, including Liberty, Industry, and Pittsburgh, being monitored for air pollution. There are reports of a link between air pollution and health issues, such as lung cancer and asthma, in the area. The county has experienced poor air quality, prompting warnings and advisories, including a Code Orange Air Quality Action Day, although it is unclear what the current air quality is or what the specific health risks are.