The Air Quality Division uses atmospheric measurements, modeling, and research to continually monitor and assess Arizona's air quality.

Air Quality Modeling Air Quality Monitoring Links Border Research Programs Emergency Response Emissions Inventory Forecasting and High Pollution Advisories Hazardous Air Pollutants Monitoring and Assessing Air Quality Natural and Exceptional Events South Phoenix Pollution Reduction

Current Air Quality Monitoring Data for Maricopa, Pima and Pinal Counties

• Maricopa County Interactive Pollution Data
• Pima County Monitoring Sites
• Pinal County

The U.S. EPA: Air Quality System (AQS) contains ambient air pollution data collected by the U.S. EPA, state, local, and tribal air pollution control agencies from thousands of monitoring stations.

See Also:

• U.S. EPA: Air Data
• U.S. EPA: Air Quality System (AQS) Data Mart
• U.S. EPA: Air Quality System (AQS) Data Downloads