DEEP: Air Quality Summary and Trends

Air Quality Summary and Trends


Air Quality Trends in Connecticut

Air quality trends are used to demonstrate how today's air quality compares with historic observations to assess whether the air quality is improving and to determine if control and abatement strategies are effective. These air quality plots show the relative trends through the latest year available.  Choose the following links for the latest pollutant trend graphs:

Ozone  PM2.5  Carbon Monoxide  Nitrogen Dioxide  Sulfur Dioxide  Lead

Annual Air Quality Summaries and Reports

Note: CT DEEP discontinued the Annual Air Quality Summary as of year 1999.  Links to the EPA website are provided for year 2000 and later for the New England annual reports.

2012 EPA Annual Report on Air Quality in New England (PDF)

2011 EPA Annual Report on Air Quality in New England (PDF)

2010 EPA Annual Report on Air Quality in New England (PDF)

2009 EPA Annual Report on Air Quality in New England (PDF)

2008 EPA Annual Report on Air Quality in New England (PDF)

2007 EPA Annual Report on Air Quality in New England (PDF)

2006 EPA Annual Report on Air Quality in New England (PDF)

2005 EPA Annual Report on Air Quality in New England (PDF)

2004 EPA Annual Report on Air Quality in New England (PDF)

2003 EPA Annual Report on Air Quality in New England (PDF)

2002 EPA Annual Report on Air Quality in New England (PDF)

2001 EPA Annual Report on Air Quality in New England (PDF)

2000 EPA Annual Report on Air Quality in New England (PDF) 

1999 Annual Air Quality Summary (PDF)

1998 Annual Air Quality Summary (PDF)

1997 Annual Air Quality Summary (PDF) 

1996 Annual Air Quality Summary (PDF)

1995 Annual Air Quality Summary (PDF)

1994 Annual Air Quality Summary (PDF)

1993 Annual Air Quality Summary (PDF)

1992 Annual Air Quality Summary (PDF)

1991 Annual Air Quality Summary (PDF)

1990 Annual Air Quality Summary (PDF)

1989 Annual Air Quality Summary (PDF)

1988 Annual Air Quality Summary (PDF)

1987 Annual Air Quality Summary (PDF)

1986 Annual Air Quality Summary (PDF)

1985 Annual Air Quality Summary (PDF)

1984 Annual Air Quality Summary (PDF)

1983 Annual Air Quality Summary (PDF)

1982 Annual Air Quality Summary (PDF)

1981 Annual Air Quality Summary (PDF)

1980 Annual Air Quality Summary (PDF)

1979 Annual Air Quality Summary (PDF)

1978 Annual Air Quality Summary (PDF)

1977 Annual Air Quality Summary (PDF)

1976 Annual Air Quality Summary (PDF)

1975 Annual Air Quality Summary (PDF)

1974 Annual Air Quality Summary (PDF)

1973 Annual Air Quality Summary (PDF)

Content last updated on September 18, 2015