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:
Annual Air Quality Summaries and Reports
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.
Content last updated on September 28, 2018