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Air Monitoring

The air monitoring division provides an accurate and timely representation of the ambient air quality within Maricopa County. In cooperation with the United States Environmental Protection Agency (EPA) and other governmental agencies, the division operates 23 air quality sites which measure for the following pollutants:

  • Carbon Monoxide

  • Lead

  • Nitrogen Dioxide

  • Ozone

  • Particulates Matter (PM-10 and PM-2.5)

  • Sulfur Dioxide

The data from these sites are used in a variety of different ways. This includes the ability to determine attainment status with the Clean Air Act, modeling for new sources and providing data to Air Quality Forecaster.

Map of Air Monitoring Stations

Real-time air monitoring data

Air Monitoring Stations Map

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Maricopa County Air Monitoring Division offers enhanced data from the monitoring network including:

  • Real-time updates for PM-10

  • Hourly updates for remaining criteria pollutants

  • Real-time meteorology

  • National Weather Service radar

  • Satellite imagery

  • Air Quality Index ratings