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Air Forecasting

ADEQ meteorologists provide Air Quality Index (AQI) and Air Quality Risk-Based (AQR) forecasts to serve and assist the public, industry and agricultural operations in Arizona.

Air Quality Index (AQI) Hourly Forecast

These forecasts are based on the Environmental Protection Agency (EPA)'s AQI federal health standards and are issued for the following areas:

The AQI Forecast lets the public know expected air quality conditions and provides advice about what they can do to protect their health, especially that of children, seniors and people with respiratory problems. 

Forecasts are also available on the Air Arizona mobile app | View >

ADEQ also issues a:

  • High Pollution Watch (HPW) when there is the potential for a pollutant to exceed the federal health standard

  • High Pollution Advisory (HPA) when it is imminent or there is a high probability for a pollutant to exceed the federal health standard

Learn more about EPA's AQI | View AQI Guide >

Air Quality Risk-Based (AQR) Dust Forecasts for PM-10

ADEQ forecasts for PM10  in the following areas:

ADEQ issues these forecasts to assist industrial and agricultural operations with reducing dust pollution through planning work activities.  
Learn more 
about Particulate Pollution | View Fact Sheet > | En español >  

Air Quality Risk-Based (AQR) Lead Forecast

ADEQ Lead (PB) forecast for: 

ADEQ studied historical weather patterns as they relate to lead air pollution to develop three lead risk categories – low, moderate and high. The risk-based lead forecast for Hayden predicts the possibility of reduced air quality due to lead. ADEQ monitors for air lead levels in Hayden according to EPA’s requirements (one sample every six days). These samples are analyzed by a certified laboratory and take one month to process. These results are used to refine future lead forecasts.

Air Quality Monitoring Locations & Cameras

  • ADEQ Statewide Monitors | View >
  • Maricopa County Monitors | View >
  • Current Visibility in Phoenix Metro via ADEQ Webcams | View >

Sign Up to Receive Air Quality Forecasts

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Unfamiliar with some of the acronyms or technical terms used on this page?

Visit our glossary | View Glossary >