Air Quality Summaries 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
Annual Summaries of Ozone Exceedance Days
Note: Annual reports are no longer prepared. CT DEEP discontinued the Annual Air Quality Summary as of year 1999. New England annual reports by the EPA are posted below for 2000-2012.
2012 EPA Annual Report on Air Quality in New England
2011 EPA Annual Report on Air Quality in New England
2010 EPA Annual Report on Air Quality in New England
2009 EPA Annual Report on Air Quality in New England
2008 EPA Annual Report on Air Quality in New England
2007 EPA Annual Report on Air Quality in New England
2006 EPA Annual Report on Air Quality in New England
2005 EPA Annual Report on Air Quality in New England
2004 EPA Annual Report on Air Quality in New England
2003 EPA Annual Report on Air Quality in New England
2002 EPA Annual Report on Air Quality in New England
2001 EPA Annual Report on Air Quality in New England
2000 EPA Annual Report on Air Quality in New England
1999 Annual Air Quality Summary
1998 Annual Air Quality Summary
1997 Annual Air Quality Summary
1996 Annual Air Quality Summary
1995 Annual Air Quality Summary
1994 Annual Air Quality Summary
1993 Annual Air Quality Summary
1992 Annual Air Quality Summary
1991 Annual Air Quality Summary
1990 Annual Air Quality Summary
1989 Annual Air Quality Summary
1988 Annual Air Quality Summary
1987 Annual Air Quality Summary
1986 Annual Air Quality Summary
1985 Annual Air Quality Summary
1984 Annual Air Quality Summary
1983 Annual Air Quality Summary
1982 Annual Air Quality Summary
1981 Annual Air Quality Summary
1980 Annual Air Quality Summary
1979 Annual Air Quality Summary
1978 Annual Air Quality Summary
1977 Annual Air Quality Summary
1976 Annual Air Quality Summary
1975 Annual Air Quality Summary
1974 Annual Air Quality Summary
1973 Annual Air Quality Summary
Content last updated on September 28, 2018