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    Clean Air Programs

    Air quality information and education to help reduce air pollution in Pima County.

    Current Air Quality

    Current air quality in Pima County measuring carbon monoxide, ozone, PM10, PM2.5 Nitrogen Dioxide and Sulfur Dioxide.

    Monitoring Network

    The air quality monitoring groups is divided into 3 units; the Field Monitoring unit, the Data Management unit and the Quality Assurance / Quality Control (QA/QC) unit.

    Pollution Advisories

    Air quality advisories for Pima County.

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    Department of Environmental Quality

    33 N. Stone Ave., Suite 700
    Tucson, AZ 85701

    Phone: (520) 724-7400
    Fax: (520) 838-7432

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