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

Air Quality Index (AQI)

Air Quality Index (AQI)

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.

EnviroFlash  - Subscribe to receive air quality information by e-mail
{Link to follow the air quality forecasts on Twitter} - Follow the air quality forecasts

  {AQI Logo}
Air Quality Labels
Forecasted
Saturday, November 22, 2014
{Air Quality Good}
Forecasted
Sunday, November 23, 2014
{Air Quality Moderate}

{AQI Scale}

Ozone forecasting for the 2014 season has come to a close.
 Ozone concentrations from October through April are expected to remain in the GOOD, to occasionally MODERATE range.

2013 Forecasted Unhealthy Ozone Days

Annual summary of 8-hour and 1-hour ozone daily maximums

Health Effects Statements      Cautionary Statements

Predicted Daily AQI Maximums for
Sunday, November 23, 2014
(NA=Not Available)

Town Fine Particles
(PM2.5)
Bridgeport 67
Cornwall 54
Danbury 59
East Hartford 63
Groton 52
New Haven 57
Waterbury 54

 


Current Hourly AQI (combined) from EPA AIRNow

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

Ozone 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.