DEEP: Air Quality Index
Connecticut Department of Energy & Environmental Protection
DEEP: Air Quality Index

Air Quality Index

The U. S. Environmental Protection Agency (EPA) has provided a scale called the Air Quality Index (AQI) for rating air quality. This scale is based on the National Ambient Air Quality Standards (NAAQS). The AQI is not routinely updated on weekends and during holiday periods. On those days, please call the Air Quality Index Hotline at (800) 249-1234 or (860) 424-4167 or link to EPA AIRNow State of Connecticut for the most current air quality information.

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{Forecast Dependent Restrictions Apply}    Forecast for the Regulated Community
Valid Tuesday, July 28, 2015

 

  {AQI Logo}
Air Quality Labels
Forecasted
Monday, July 27, 2015
{Air Quality Good to Moderate}
Forecasted
Tuesday, July 28, 2015
{Air Quality Moderate to Unhealthy for Sensitive Groups}

{AQI Scale}

 

 

Health Effects Statements      Cautionary Statements

Predicted Daily AQI Maximums for
Tuesday, July 28, 2015
(NA=Not Available)

Town Fine Particles
(PM2.5)
Ozone
(O3)
Bridgeport 50  
Cornwall 2951
Danbury 3358
East Hartford 3854

Greenwich

  101

Groton

3371

Madison

  109

Middletown

  93
New Haven 50101
Stafford   54
Stratford   10
Waterbury 38  
Westport   106


Historical Ozone Data  |  Tips for ozone action days

Air Monitoring in Connecticut


Current Hourly AQI (combined) from EPA AIRNow

{Current Ozone AQI Map for CT, NY and NJ} {AQI Logo}
{AQI Scale}

Air quality data is published as soon as practical after the end of each hour and as such are not fully validated. Therefore, data are only approved for the expressed purpose of reporting and forecasting the AQI. This map represents the current air quality as a result of combining the particulate and ozone AQIs into one map.
EPA AIRNow

 
Current Hourly AQI (combined) from EPA AIRNow (animated)
{Current PM 2..5 AQI Map for CT, NY and NJ} {AQI Logo}

{AQI Scale}

Air quality data is published as soon as practical after the end of each hour and as such are not fully validated. Therefore, data are only approved for the expressed purpose of reporting and forecasting the AQI. This map represents an animation of the combined AQI going back several hours.
EPA AIRNow


For more information, visit the AIRNow State of Connecticut website.



{DEEP Logo} DEEP's Air Quality Index: (860) 424-4167   {American Lung Association Logo}
American Lung Association's air pollution or lung health information: 1-800-LUNG-USA
State clean air programs: 1-800-249-1234
Department of Energy and Environmental Protection
79 Elm Street, Hartford, CT 06106-5127


If you have any questions regarding the Air Quality Forecast, please contact the Bureau of Air Management by phone at (860) 424-4152 or by e-mail.