ADEQ conducts ambient air quality monitoring throughout Arizona. Environmental parameters measured in this monitoring network include criteria pollutants (O3, SO2, PM₁₀, PM_2.5, CO, and Pb), air toxics, and meteorology. ADEQ's Ambient Air Quality Monitoring Network Plan contains a detailed description of this network. Please visit ADEQ's Annual Reports for information on previous network plans.

In addition to ADEQ's monitoring network, several county air quality agencies also conduct ambient air quality monitoring.

• Maricopa County Air Quality Department
• Pima County Department of Environmental Quality
• Pinal County Air Quality Control District

National Links

• U.S. EPA: AirData
• U.S. EPA: AIRNow
• U.S. EPA: Air Compare
• U.S. EPA: Air Quality Where You Live
• U.S. EPA: Air Quality System (AQS) Data Downloads

Visibility Monitoring Information

• ADEQ Visibility Network
• ADEQ Portable Particulate Network
• Interagency Monitoring of Protected Visual Environments (IMPROVE)
• Visibility Information Exchange Web System (VIEWS)
• Western Regional Air Partnership

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