DEP: Air Quality Index
CT.GOV
Connecticut Department of Environmental Protection
/DEP Website

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 for the most current air quality information.

{No Forecast Dependent Restrictionsl}   Forecast for the Regulated Community
Valid Friday, July 03, 2009
  {AQI Logo}
Air Quality Labels
Observed
Wednesday, July 01, 2009
{Air Quality Good to Moderate}
Forecasted
Thursday, July 02, 2009
{Air Quality Good to Moderate}
Forecasted
Friday, July 03, 2009
{Air Quality Good to Moderate}

{AQI Scale}

 

Health Effects Statements      Cautionary Statements

Predicted Daily AQI Maximums for
  Friday, July 03, 2009
(NA = Not Available)

Town Fine Particles 
(PM2.5)
Ozone 
(O3)
Bridgeport 54  
Cornwall 40 47
Danbury 46 50
East Hartford 40 49
Greenwich     50
Groton 52 50
Madison     47
Middletown     42
New Haven 50 50
Stafford     47
Stratford     NA
Waterbury 50   
Westport

 

50

Historical Ozone Data  |  Tips for ozone action days

Air Monitoring in Connecticut


Current Ozone AQI 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.
EPA AIRNow

 
Current PM2.5 AQI from EPA AIRNow
{Current PM 2..5 AQI Map for CT, NY and NJ} {AQI Logo}

{AQI Scale}

Particle pollution data are generated using monitoring techniques that approximate the Federal Reference Method. The data are 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.
EPA AIRNow


For today's air quality forecast for the Northeast region, please go to the
  Northeast Air Quality Forecast on the EPA AIRNow website.



{DEP Logo} DEP'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 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) 424-3027 or by e-mail.

 
 
 





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