Return to Home Page

Ozone, Carbon Monoxide, Sulfur Dioxide, Lead,
and Particulate Matter in the United States

Nonattainment Areas for 8-Hour 2008 Ozone
Standard

Nonattainment Areas for 8-Hour 1997 Ozone
Standard

Areas with 1-Hour Ozone Standard that were Revoked

Nonattainment Areas for Current
PM10 Standard

Nonattainment Areas for the Current (1997) PM2.5 Standard

Nonattainment Areas for the Current (2006) PM2.5 Standard

Nonattainment Areas for the Current (2012) PM2.5 Standard

Nonattainment Areas for Current 8-Hour
Carbon Monoxide Standard

Nonattainment Areas for Current
Sulfur Dioxide Standard (1971)

Nonattainment Areas for Current
Sulfur Dioxide Standard (2010)

Nonattainment Areas for the Current Lead (2008) Standard

Nonattainment Areas for the Current Lead (1978) Standard

Comparison of PM2.5 Violators for Annual and 24-Hour Standards Based on Annual (2005-2007) and PM2.5 24-Hour (35 ug/m3) Nonattainment Areas (2005-2007)

ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 35 ug/m3 (441 Counties) for 2004-2005

ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 30 ug/m3 (704 Counties)

ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 40 ug/m3 (291 Counties)

ASL Estimated Nonattainment Areas for a Daily PM2.5 Standard of 50 ug/m3 (109 Counties)

ASL Estimated Nonattainment Areas for an Annual PM2.5 Standard of 13 ug/m3

ASL Estimated Nonattainment Areas for an Annual PM2.5 Standard of 14 ug/m3

2000-2002 County Violations of the Annual PM2.5 Standard

Canadian and U.S. 4th Highest 8-Hour Average
Ozone Values for 2001-2003

Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2003-2005

Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2004-2006

Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2005-2007

Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2006-2008

Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2007-2009

Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2001-2003, 2002-2004, and 2003-2005 Periods

Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2002-2004, 2003-2005, and 2004-2006 Periods

Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2003-2005, 2004-2006, and 2005-2007 Periods

Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2004-2006, 2005-2007, and 2006-2008 Periods

Comparison of Canadian  and U.S. 4th Highest 8-Hour Average Ozone Values for 2005-2007, 2006-2008, and 2007-2009 Periods

Estimated 8-hr Nonattainment Areas for Possible 0.06 and 0.07 ppm Ozone Standards for 2003-2005

8-hr Ozone Violation Counties for 0.060, 0.065, and 0.070 ppm for 2006-2008

 W126 Ozone Violation Counties for 7 and 15 ppm-hours for 2006-2008 

 Estimated Counties that Exceed a W126 Value of 15.0 ppm-hours for 2003- 2005 and Do Not Violate the 0.08 ppm 8-hr Ozone Standard      

Example of 24-Hour W126 Ozone Exposures
for April - September 2001
       

Violating Areas for the Originally Proposed
SUM06 Ozone Secondary Standard for 1993-1995

Possible Violations for the Spatially Averaged PM2.5 15 ug/m3 Annual Standard for 1993-1995   

Home Page | News | Corporation | Maps | Publications | Table of Contents | Multimedia Center

Copyright © 1995-2017 A.S.L. & Associates. All rights reserved.
Privacy Notice