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. Our population exceeds 1 million, which means understanding the sources of air pollution and initiating proactive steps to curb it are important for maintaining and improving the air quality.

As the region’s federally designated transportation conformity and state-designated air quality planning organization, Pima Association of Governments develops and analyzes plans to ensure the region maintains healthy air. PAG is responsible for demonstrating that regional transportation activities do not adversely impact 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. PAG promotes vehicle travel reduction through its Travel Reduction Program and the use of alternatively fueled vehicles to reduce motor vehicle emissions. Land development patterns and meteorological conditions also can affect air quality.

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

Air quality reports:

We are all responsible for what we do to reduce pollutants in our air. Read tips on actions you can take to help keep the region’s air as healthy as possible.