Air Quality

Healthy air helps us breathe easier, and we want to keep our beautiful blue skies clean for you, your family and people who visit the greater Tucson region.

As the region’s federally designated transportation conformity and air quality planning organization, Pima Association of Governments develops and analyzes plans to ensure the region maintains healthy air. With the greater Tucson region’s population at 1 million, understanding the sources of air pollution and initiating proactive steps to curb it are important for maintaining and improving the air quality.

Although air pollutants are emitted from commercial and industrial sources, a major contribution of human-caused air pollution in Pima County stems from motor vehicle use. Land development patterns and meteorological conditions also can affect air quality.

PAG’s air quality plans ensure that local programs, including transportation planning efforts, comply with federal air quality requirements and do not adversely affect the environment.

PAG also conducts periodic inventories of greenhouse gas (GHG) emissions for the region.