Green Book

You are here: EPA Home > Green Book > >National Area and County-Level Multi-Pollutant Information >New Hampshire Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

New Hampshire Nonattainment/Maintenance Status for Each County by Year for All Criteria Pollutants

Data is current as of February 29, 2024

Listed by County, NAAQS, Area. The 8-hour Ozone (1997) standard was revoked on April 6, 2015 and the 1-hour Ozone (1979) standard was revoked on June 15, 2005.

* The 1997 Primary Annual PM-2.5 NAAQS (level of 15 µg/m3) is revoked in attainment and maintenance areas for that NAAQS. For additional information see the PM-2.5 NAAQS SIP Requirements Final Rule, effective October 24, 2016. (81 FR 58009)

Change the State:
 
Important Notes Download National Dataset: dbf   |   xls    |   Data dictionary (PDF)
County NAAQS Area Name Nonattainment in Year Redesignation
to Maintenance
Classification Whole or/
Part County
Population
(2010
)
State/
County
FIPS Codes
NEW HAMPSHIRE
Cheshire County 1-Hour Ozone (1979)-NAAQS revoked Cheshire County, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Incomplete Data Whole 77,117 33/005
Hillsborough County 1-Hour Ozone (1979)-NAAQS revoked Boston-Lawrence-Worcester (E. Mass), MA-NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Serious Part 202,700 33/011
Hillsborough County 1-Hour Ozone (1979)-NAAQS revoked Manchester, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Marginal Part 198,021 33/011
Hillsborough County 8-Hour Ozone (1997)-NAAQS revoked Boston-Manchester-Portsmouth (SE), NH
                                                            04 05 06 07 08 09 10 11 12                                                            
03/04/2013 Moderate Part 347,992 33/011
Hillsborough County Carbon Monoxide (1971) Manchester, NH
92 93 94 95 96 97 98 99 00                                                                                                                        
01/29/2001 Not Classified Part 109,565 33/011
Hillsborough County Carbon Monoxide (1971) Nashua, NH
92 93 94 95 96 97 98 99 00                                                                                                                        
01/29/2001 Not Classified Part 86,494 33/011
Hillsborough County Sulfur Dioxide (2010) Central New Hampshire, NH
                                                                                                         13 14 15 16 17 18                              
09/20/2019   Part 17,651 33/011
Merrimack County 1-Hour Ozone (1979)-NAAQS revoked Manchester, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Marginal Whole 146,445 33/013
Merrimack County 8-Hour Ozone (1997)-NAAQS revoked Boston-Manchester-Portsmouth (SE), NH
                                                            04 05 06 07 08 09 10 11 12                                                            
03/04/2013 Moderate Part 15,013 33/013
Merrimack County Sulfur Dioxide (2010) Central New Hampshire, NH
                                                                                                         13 14 15 16 17 18                              
09/20/2019   Part 94,372 33/013
Rockingham County 1-Hour Ozone (1979)-NAAQS revoked Boston-Lawrence-Worcester (E. Mass), MA-NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Serious Part 164,200 33/015
Rockingham County 1-Hour Ozone (1979)-NAAQS revoked Manchester, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Marginal Part 47,768 33/015
Rockingham County 1-Hour Ozone (1979)-NAAQS revoked Portsmouth-Dover-Rochester, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Serious Part 83,255 33/015
Rockingham County 8-Hour Ozone (1997)-NAAQS revoked Boston-Manchester-Portsmouth (SE), NH
                                                            04 05 06 07 08 09 10 11 12                                                            
03/04/2013 Moderate Part 286,035 33/015
Rockingham County Sulfur Dioxide (2010) Central New Hampshire, NH
                                                                                                         13 14 15 16 17 18                              
09/20/2019   Part 12,430 33/015
Strafford County 1-Hour Ozone (1979)-NAAQS revoked Portsmouth-Dover-Rochester, NH
92 93 94 95 96 97 98 99 00 01 02 03 04                                                                                                    
/ / Serious Whole 123,143 33/017
Strafford County 8-Hour Ozone (1997)-NAAQS revoked Boston-Manchester-Portsmouth (SE), NH
                                                            04 05 06 07 08 09 10 11 12                                                            
03/04/2013 Moderate Part 91,516 33/017
Important Notes

Go Top