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  2. Air Quality in New England

Air Quality Index and Real-time Air Quality Data

The Current AQI and Yesterday's AQI maps are created from ozone and particle data gathered from a nationwide network of state and local air monitoring stations. The maps show the higher of the estimated ozone AQI and PM2.5 AQI. The Forecasted AQI maps are created from data submitted by the State Air Quality Forecasters.


On this page:

  • Current AQI in New England
  • Today's Forecasted AQI in New England
  • Tomorrow's Forecasted AQI in New England
  • Yesterday's AQI in New England
  • State Environmental Agencies

On other pages:

  • 2025 Ozone Exceedances
  • 2025 PM2.5 Exceedances
  • What Actions Can You Take
Up angle shot of chimneys and building in the background

Related Resources

  • What is the AQI?
  • Air Quality Health Effects
  • Sign-Up for EnviroFlash E-Mail Alerts

Current AQI in New England

The Air Quality Index (AQI) in the figure above is calculated based on Ozone (O₃) and Particulate Matter (PM2.5 and PM10). The air quality monitors may look at all, or only some of these pollutants. This is based on the specifications of each individual air quality monitor.


Today's Forecasted AQI in New England

The Air Quality Index (AQI) in the figure above is calculated based on Ozone (O₃) and Particulate Matter (PM2.5 and PM10). The air quality monitors may look at all, or only some of these pollutants. This is based on the specifications of each individual air quality monitor.


Tomorrow's Forecasted AQI in New England

The Air Quality Index (AQI) in the figure above is calculated based on Ozone (O₃) and Particulate Matter (PM2.5 and PM10). The air quality monitors may look at all, or only some of these pollutants. This is based on the specifications of each individual air quality monitor.


Yesterday's AQI in New England

The Air Quality Index (AQI) in the figure above is calculated based on Ozone (O₃) and Particulate Matter (PM2.5 and PM10). The air quality monitors may look at all, or only some of these pollutants. This is based on the specifications of each individual air quality monitor.


State Environmental Agencies

  • Connecticut Department of Energy and Environmental Protection
  • Maine Department of Environmental Protection
  • Massachusetts Department of Environmental Protection
  • New Hampshire Department of Environmental Services
  • Rhode Island Department of Environmental Management
  • Vermont Department of Environmental Conservation

Air Quality in New England

  • Air Quality Index and Real-time Air Quality Data
  • New England Air Quality Programs
    • New England's Air Quality Branch
  • Air Monitoring in New England
    • 2025 Ozone Exceedances
    • 2025 PM2.5 Exceedances
    • What Actions Can You Take
    • Historical Ground-level Ozone Exceedances in New England
Contact Us About Air Quality in New England
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 17, 2025
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