Ada County; Boise, ID
PM-10 (1987)
Maint
0.0
2019-2021
Yes
&micro;g/m<sup>3</sup>
Moderate
10
ID
B
PM-10.1990.Boise
Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO
8
CO
PM-10.1990.Denver
Ajo (Pima County), AZ
Sulfur Dioxide (1971)
ppb
Primary
9
AZ
A
SO2.1978.Ajo
Albany-Schenectady-Troy, NY
1-Hour Ozone (1979)
NAA
Revoked
0.128
0.069
ppm
Marginal
2
NY
G
Ozone_1-hr.1990.Albany
8-Hour Ozone (1997)
0.087
0.057
Ozone_8-hr.1997.Albany
Albuquerque, NM
Carbon Monoxide (1971)
1.0
2020-2021
Moderate <= 12.7ppm
6
NM
C
CO.1990.Albuquerque
Allegan County, MI
0.092
Incomplete Data
5
MI
K
Ozone_1-hr.1990.Allegan_Co
0.097
0.075
Former Subpart 1
I
Ozone_8-hr.1997.Allegan_Co
8-Hour Ozone (2015)
2014-2016
No
E
Ozone_8-hr.2015.Allegan_Co
Allegheny County Air Basin: Hazelwood monitor, PA
3
PA
SO2.1978.Hazelwood
Allegheny County, PA
PM-2.5 (2012)
13.0
11.2
PM-2.5.2012.Allegheny_Co
Allegheny County; Liberty, Lincoln, Port Vue, Glassport, Clairton, PA
PM-10.1990.Liberty-Clairton
Allegheny, PA
Sulfur Dioxide (2010)
146
59
SO2.2010.Liberty-Clairton
Allentown, PA
PM-2.5 (2006)
36
24
PM-2.5.2006.Allentown
Allentown-Bethlehem-Easton, PA
0.091
0.064
Ozone_8-hr.1997.Allentown
8-Hour Ozone (2008)
0.076
2008-2010
F
Ozone_8-hr.2008.Allentown
Allentown-Bethlehem-Easton, PA-NJ
0.137
0.077
3-2
PA-NJ
Ozone_1-hr.1990.Allentown
Alton Township, IL
2009-2011
No Data
IL
SO2.2010.Alton
Altoona, PA
0.129
0.072
Ozone_1-hr.1990.Altoona
0.085
Insufficient Data
Ozone_8-hr.1997.Altoona
Amador County, CA
0.073
0.067
CA
Ozone_8-hr.2015.Amador_Co
Amador and Calaveras Cos. (Central Mountain Cos.), CA
0.070
Ozone_8-hr.1997.Amador_and_Calaveras_Cos
Anchorage, AK
3.0
Serious
AK
CO.1990.Anchorage
Anchorage; Eagle River, AK
0.4
PM-10.1990.Anchorage
Anne Arundel County and Baltimore County, MD
7
MD
SO2.2010.Baltimore
Archuleta County; Pagosa Springs, CO
PM-10.1990.Pagosa_Springs
Arecibo, PR
Lead (2008)
0.25
2007-2009
PR
Lead.2008.Arecibo
Armstrong County: Madison, Mahoning, Boggs, Washington, Pine, PA
SO2.1978.Armstrong_Co
Aroostock County; City of Presque Isle, ME
1
ME
PM-10.1990.Presque_Isle
Atlanta, GA
0.162
0.093
Severe-15
4
GA
Ozone_1-hr.1990.Atlanta
0.068
Ozone_8-hr.1997.Atlanta
0.080
Ozone_8-hr.2008.Atlanta
Ozone_8-hr.2015.Atlanta
PM-2.5 (1997)
18.0
9.6
PM-2.5.1997.Atlanta
Atlantic City, NJ
0.145
NJ
Ozone_1-hr.1990.Atlantic_City
Not Classified
D
CO.1990.Atlantic_City
Bakersfield, CA
1.4
CO.1990.Bakersfield
Baltimore, MD
0.194
0.096
Ozone_1-hr.1990.Baltimore
0.103
Ozone_8-hr.1997.Baltimore
0.089
Ozone_8-hr.2008.Baltimore
Ozone_8-hr.2015.Baltimore
CO.1990.Baltimore
16.7
7.9
PM-2.5.1997.Baltimore
Baton Rouge, LA
0.164
LA
Ozone_1-hr.1990.Baton_Rouge
0.086
Ozone_8-hr.1997.Baton_Rouge
0.078
Ozone_8-hr.2008.Baton_Rouge
Beaumont-Port Arthur, TX
0.158
0.088
TX
Ozone_1-hr.1990.Beaumont
0.066
Ozone_8-hr.1997.Beaumont
Beauregard Parish, LA
Ozone_1-hr.1990.Beauregard_Par
Beaver, PA
158
SO2.2010.Lower_Beaver_Valley
Belding, MI
0.28
0.09
Lead.2008.Belding
Bellefontaine, OH
0.26
OH
Lead.2008.Bellefontaine
Benton County; (part) TVA Johnsonville, TN
Primary, Secondary
TN
SO2.1978.Benton_Co
Benton Harbor, MI
0.071
Ozone_8-hr.1997.Benton_Harbor
Benzie County, MI
Ozone_8-hr.1997.Benzie_Co
Berrien County, MI
0.074
Ozone_8-hr.2015.Benton_Harbor
Billings, MT
MT
CO.1990.Billings
79
19
SO2.2010.Billings
Birmingham, AL
0.133
0.090
AL
Ozone_1-hr.1990.Birmingham
Ozone_8-hr.1997.Birmingham
11.0
PM-2.5.1997.Birmingham
39
25
PM-2.5.2006.Birmingham
Boise-Northern Ada County, ID
1.5
CO.1990.Boise
Bonner County; The Sandpoint Area, ID
2.1
PM-10.1990.Sandpoint
Boston, MA
1.1
MA
CO.1990.Boston
Boston-Lawrence-Worcester (E. Mass), MA
0.095
0.065
Ozone_8-hr.1997.Boston_MA
Boston-Lawrence-Worcester (E. Mass), MA-NH
0.165
1-1
MA-NH
Ozone_1-hr.1990.Boston
Boston-Manchester-Portsmouth (SE), NH
0.062
NH
Ozone_8-hr.1997.Boston_NH
Boyd County (part), KY
KY
SO2.1978.Boyd_Co
Bristol, TN
0.07
Lead.2008.Bristol
Brooke; Follansbee area, WV
WV
PM-10.1990.Follansbee
Brown County: Green Bay, WI
WI
SO2.1978.Green_Bay
Buffalo-Niagara Falls, NY
0.131
Ozone_1-hr.1990.Buffalo
0.099
Ozone_8-hr.1997.Buffalo
Burlington, NJ
CO.1990.Burlington
Butte County, CA
Ozone_8-hr.2015.Chico
Calaveras County, CA
Ozone_8-hr.2008.Calaveras_Co
Ozone_8-hr.2015.Calaveras_Co
Campbell-Clermont Counties, KY-OH
89
4-5
KY-OH
SO2.2010.Cincinnati
Canton, OH
0.135
Ozone_1-hr.1990.Canton
Canton-Massillon, OH
Ozone_8-hr.1997.Canton
17.3
9.5
PM-2.5.1997.Canton
2006-2008
22
PM-2.5.2006.Canton
Canton-Stark County, OH
0.40
Lead.2008.Canton
Cass County, MI
Ozone_8-hr.1997.Cass_Co
Central New Hampshire, NH
221
33
SO2.2010.Concord
Central Steptoe Valley, NV
NV
SO2.1978.Central_Steptoe_Valley
Charleston, WV
0.138
Ozone_1-hr.1990.Charleston
0.063
Ozone_8-hr.1997.Charleston
17.1
7.5
PM-2.5.1997.Charleston
16
PM-2.5.2006.Charleston
Charlotte, NC
1.3
NC
CO.1990.Charlotte
Charlotte-Gastonia, NC
Ozone_1-hr.1990.Charlotte
Charlotte-Gastonia-Rock Hill, NC-SC
0.100
4-4
NC-SC
Ozone_8-hr.1997.Charlotte
Charlotte-Rock Hill, NC-SC
0.079
Ozone_8-hr.2008.Charlotte
Chattanooga, TN-GA-AL
16.1
8.7
4-4-4
AL-TN-GA
PM-2.5.1997.Chattanooga
Cherokee County, SC
0.132
SC
Ozone_1-hr.1990.Cherokee_Co
Cheshire County, NH
Ozone_1-hr.1990.Cheshire_Co
Chicago, IL
0.24
Lead.2008.Chicago
Chicago, IL-IN-WI
IL-IN-WI
Ozone_8-hr.2015.Chicago
Chicago-Gary-Lake County, IL-IN
0.190
0.094
Severe-17
5 -5
IL-IN
Ozone_1-hr.1990.Chicago
0.101
5-5
Ozone_8-hr.1997.Chicago
17.7
10.4
PM-2.5.1997.Chicago
Chicago-Naperville, IL-IN-WI
5-5-5
Ozone_8-hr.2008.Chicago
Chico (Butte County), CA
Ozone_8-hr.2008.Chico
Chico, CA
Section 185A
J
Ozone_1-hr.1990.Chico
Ozone_8-hr.1997.Chico
3.6
CO.1990.Chico
69
55
PM-2.5.2006.Chico
Cincinnati, OH-KY
5-4
OH-KY
Ozone_8-hr.2015.Cincinnati
Cincinnati, OH-KY-IN
5-4-5
OH-KY-IN
Ozone_8-hr.2008.Cincinnati
Cincinnati-Hamilton, OH-KY
0.157
0.084
Ozone_1-hr.1990.Cincinnati
Cincinnati-Hamilton, OH-KY-IN
Ozone_8-hr.1997.Cincinnati
17.8
PM-2.5.1997.Cincinnati
Clark County; Las Vegas planning area, NV
PM-10.1990.Las_Vegas
Clarksville-Hopkinsville, TN-KY
0.058
TN-KY
Ozone_8-hr.1997.Clarksville
Clearfield and Indiana Counties, PA
Ozone_8-hr.1997.Clearfield_and_Indiana_Cos
Cleveland, OH
Ozone_8-hr.2015.Cleveland
2.2
CO.1990.Cleveland
0.17
Lead.2008.Cleveland
12.4
PM-2.5.2012.Cleveland
Cleveland-Akron-Lorain, OH
Ozone_1-hr.1990.Cleveland
Ozone_8-hr.1997.Cleveland
Ozone_8-hr.2008.Cleveland
18.3
PM-2.5.1997.Cleveland
38
23
PM-2.5.2006.Cleveland
Clinton County, OH
0.121
Ozone_1-hr.1990.Clinton_Co
Cochise County; Paul Spur/Douglas planning area, AZ
0.3
PM-10.1990.Douglas
Colbert County (part); TVA Colbert Plant, AL
Secondary
SO2.1978.Colbert_Co
Collin County, TX
Lead (1978)
2009-2010
Lead.1992.Collin_Co
Colorado Springs, CO
CO.1990.Colorado_Springs
Columbiana County, OH
Ozone_1-hr.1990.Columbiana_Co
Columbus, OH
Ozone_1-hr.1990.Columbus
Ozone_8-hr.1997.Columbus
Ozone_8-hr.2008.Columbus
Ozone_8-hr.2015.Columbus
9.1
PM-2.5.1997.Columbus
Cook County; Lyons Township, IL
PM-10.1990.Lyons
Cook County; Southeast Chicago, IL
PM-10.1990.Chicago
Coshocton County; Franklin Township, OH
SO2.1978.Coshocton_Co
Coso Junction, CA
2.0
PM-10.1990.Coso_Junction
Crawford County, PA
Ozone_1-hr.1990.Crawford_Co
Cuyahoga County, OH
PM-10.1990.Cleveland
SO2.1978.Cleveland
Dakota County, MN
MN
Lead.1992.Minneapolis
Dallas-Fort Worth, TX
0.140
Ozone_1-hr.1990.Dallas
Ozone_8-hr.1997.Dallas
Severe 15
Ozone_8-hr.2008.Dallas
0.08
Ozone_8-hr.2015.Dallas
Dane County: Madison sub-city area, WI
SO2.1978.Madison
Dayton-Springfield, OH
0.143
0.081
Ozone_1-hr.1990.Dayton
Ozone_8-hr.1997.Dayton
15.2
PM-2.5.1997.Dayton
Delaware County, PA
12.3
8.6
PM-2.5.2012.Delaware_Co
Delta, OH
0.69
Lead.2008.Delta
Denver Metro/North Front Range, CO
0.083
Ozone_8-hr.2015.Denver
Denver-Boulder, CO
0.122
Ozone_1-hr.1990.Denver
1.8
CO.1990.Denver
Denver-Boulder-Greeley-Ft. Collins-Loveland, CO
2001-2003
Ozone_8-hr.1997.Denver
Ozone_8-hr.2008.Denver
Detroit, MI
Ozone_8-hr.2015.Detroit
1.9
CO.1990.Detroit
90
47
SO2.2010.Detroit
Detroit-Ann Arbor, MI
0.144
Ozone_1-hr.1990.Detroit
Ozone_8-hr.1997.Detroit
19.5
11.5
PM-2.5.1997.Detroit
37
27
PM-2.5.2006.Detroit
Dona Ana County (part); Sunland Park, NM
0.127
0.098
Ozone_1-hr.1990.Sunland_Park
Dona Ana County; Anthony, NM
4.4
PM-10.1990.Anthony
Door County, WI
0.126
Rural Transport (Marginal)
H
Ozone_1-hr.1990.Door_Co
Ozone_8-hr.1997.Door_Co
Marginal (Rural Transport)
Ozone_8-hr.2015.Door_Co
Door County-Revised, WI
Ozone_8-hr.2015.Door_Co_Revised
Douglas (Cochise County), AZ
SO2.1978.Douglas
Douglas County (part); Portion of city of Omaha, NE
NE
Lead.1992.Omaha
Dukes County, MA
Ozone_8-hr.2008.Dukes_Co
Duluth, MN
CO.1990.Duluth
Eagan, MN
0.57
Lead.2008.Eagan
East Chicago, IN
IN
CO.1990.East_Chicago
East Helena Area, MT
SO2.1978.East_Helena
East Kern County, CA
0.170
Ozone_1-hr.1990.East_Kern
1.2
PM-10.1990.East_Kern
Edmonson County, KY
Ozone_1-hr.1990.Edmonson_Co
El Paso County, TX
6.1
PM-10.1990.El_Paso
El Paso, TX
Ozone_1-hr.1990.El_Paso
2.6
CO.1990.El_Paso
El Paso-Las Cruces, TX-NM
TX-NM
Ozone_8-hr.2015.El_Paso
Erie, PA
Ozone_1-hr.1990.Erie
0.060
Ozone_8-hr.1997.Erie
Essex County (Whiteface Mtn.), NY
Ozone_8-hr.1997.Whiteface_Mountain
Essex County; Whiteface Mountain, NY
Ozone_1-hr.1990.Whiteface_Mountain
Eugene-Springfield, OR
OR
CO.1990.Eugene
Evangeline Parish (Partial), LA
SO2.2010.Evangeline_Par
Evansville, IN
0.124
Ozone_1-hr.1990.Evansville
Ozone_8-hr.1997.Evansville
16.2
PM-2.5.1997.Evansville
Fairbanks, AK
1.7
CO.1990.Fairbanks
41
72
PM-2.5.2006.Fairbanks
Fayette County, TN
Lead.1992.Fayette_Co
Flathead County; Columbia Falls and vicinity, MT
PM-10.1990.Columbia_Falls
Flathead County; Kalispell and vicinity, MT
PM-10.1990.Kalispell
Flathead County; Whitefish and vicinity, MT
PM-10.1990.Whitefish
Flint, MI
Ozone_1-hr.1990.Flint
Ozone_8-hr.1997.Flint
Fort Collins, CO
CO.1990.Fort_Collins
Fort Wayne, IN
Ozone_8-hr.1997.Fort_Wayne
Franklin County, PA
Ozone_1-hr.1990.Franklin_Co
0.056
Ozone_8-hr.1997.Franklin_Co
Fredericksburg, VA
0.059
VA
Ozone_8-hr.1997.Fredericksburg
Freehold, NJ
CO.1990.Freehold
Freestone and Anderson Counties, TX
SO2.2010.Freestone_Anderson_Cos
Fremont County; Canon City Area, CO
PM-10.1990.Canon_City
Fresno, CA
2.4
Moderate > 12.7ppm
CO.1990.Fresno
Frisco, TX
0.32
0.02
Lead.2008.Collin_Co
Gallia County; Addison Township, OH
SO2.1978.Addison
Gila County (part): Payson, AZ
PM-10.1990.Payson
Giles County, VA
107
SO2.2010.Giles_Co
Grand Rapids, MI
Ozone_1-hr.1990.Grand_Rapids
Ozone_8-hr.1997.Grand_Rapids
Granite City, IL
0.15
Lead.2008.Granite_City
Grant County, NM
SO2.1978.Grant_Co
Grant Parish, LA
Ozone_1-hr.1990.Grant_Par
Grants Pass, OR
CO.1990.Grants_Pass
Great Falls, MT
CO.1990.Great_Falls
Greater Connecticut, CT
0.172
0.106
CT
Ozone_1-hr.1990.Connecticut
Ozone_8-hr.1997.Connecticut
Ozone_8-hr.2008.Connecticut
Ozone_8-hr.2015.Connecticut
Greeley, CO
0.7
CO.1990.Greeley
Greenbrier, WV
0.125
Ozone_1-hr.1990.Greenbrier
Greene County, IN
Ozone_8-hr.1997.Greene_Co_IN
Greene County, PA
Ozone_1-hr.1990.Greene_Co_PA
Ozone_8-hr.1997.Greene_Co_PA
Greensboro-Winston Salem-High Point, NC
15.8
PM-2.5.1997.Greensboro
Greensboro-Winston-Salem-High Point, NC
0.151
Ozone_1-hr.1990.Greensboro
Guayama-Salinas, PR
SO2.2010.Guayama-Salinas
Hancock County (part): Weirton, WV
SO2.1978.Weirton
Hancock County and Waldo County, ME
0.082
Ozone_1-hr.1990.Hancock_and_Waldo_Cos
Hancock and Brooke Counties (Part); The city of Weirton, WV
PM-10.1990.Weirton
Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME
Ozone_8-hr.1997.Central_Maine_Coast
Harrisburg-Lebanon-Carlisle, PA
0.136
Ozone_1-hr.1990.Harrisburg
Ozone_8-hr.1997.Harrisburg
PM-2.5.1997.Harrisburg
Harrisburg-Lebanon-Carlisle-York, PA
PM-2.5.2006.Harrisburg
Hartford-New Britain-Middletown, CT
CO.1990.Hartford
Hayden (Pinal County), AZ
2019
SO2.1978.Hayden
Hayden, AZ
0.20
0.16
Lead.2008.Hayden
PM-10.1990.Hayden
259
65
SO2.2010.Hayden
Haywood and Swain Counties (Great Smoky NP), NC
Ozone_8-hr.1997.Haywood_and_Swain_Cos
Henderson-Webster Counties, KY
80
SO2.2010.Henderson_Webster_Cos
Hickory-Morganton-Lenoir, NC
15.5
8.3
PM-2.5.1997.Hickory
Hillsborough County, FL
103
FL
SO2.2010.Tampa
Hillsborough-Polk County, FL
SO2.2010.Hillsborough_Polk_Cos
Houston-Galveston-Brazoria, TX
0.220
0.110
Ozone_1-hr.1990.Houston
0.102
Ozone_8-hr.1997.Houston
Ozone_8-hr.2008.Houston
Ozone_8-hr.2015.Houston
Howard County, TX
SO2.2010.Howard_Co
Humphreys County; (part) TVA Johnsonville, TN
SO2.1978.Humphreys_Co
Huntington, IN
SO2.2010.Huntington_IN
Huntington-Ashland, WV-KY
3-4
WV-KY
Ozone_1-hr.1990.Huntington
Ozone_8-hr.1997.Huntington
Huntington-Ashland, WV-KY-OH
17.2
3-4-5
WV-KY-OH
PM-2.5.1997.Huntington
Huron County, MI
Ozone_8-hr.1997.Huron_Co
Hutchinson County, TX
183
SO2.2010.Hutchinson_Co
Imperial County, CA
Ozone_1-hr.1990.Imperial_Co
Ozone_8-hr.1997.Imperial_Co
Ozone_8-hr.2008.Imperial_Co
Ozone_8-hr.2015.Imperial_Co
30
PM-2.5.2006.Imperial_Co
14.3
PM-2.5.2012.Imperial_Co
Imperial Valley, CA
2.7
PM-10.1990.Imperial_Co
Indian Wells, CA
PM-10.1990.Indian_Wells
Indiana, PA
82
SO2.2010.Indiana_Co
Indianapolis, IN
Ozone_1-hr.1990.Indianapolis
Ozone_8-hr.1997.Indianapolis
CO.1990.Indianapolis
12.0
PM-2.5.1997.Indianapolis
SO2.2010.Indianapolis
Inland Sheboygan County, WI
Ozone_8-hr.1997.Sheboygan_Inland
Ozone_8-hr.2008.Sheboygan_Inland
Inyo County; Owens Valley planning area, CA
4.7
PM-10.1990.Owens_Valley
Iron County (part); Dent Township, MO
MO
Lead.1992.Dent
Iron County (part); Liberty and Arcadia, MO
Lead.1992.Liberty
Iron, Dent, and Reynolds Counties, MO
2.46
0.14
Lead.2008.Iron
Jackson County, IN
Ozone_8-hr.1997.Jackson_Co
Jackson County, MO
159
SO2.2010.Kansas_City
Jackson County; Medford-Ashland (including White City), OR
PM-10.1990.Medford
Jacksonville, FL
0.119
Ozone_1-hr.1990.Jacksonville
Jamestown, NY
Ozone_8-hr.1997.Jamestown
Ozone_8-hr.2008.Jamestown
Jefferson County (part); Herculaneum, MO
2.9
Lead.1992.Herculaneum
Jefferson County, AL
Lead.1992.Birmingham
Jefferson County, KY
112
14
SO2.2010.Louisville
Jefferson County, MO
2.89
0.10
Lead.2008.Herculaneum
289
SO2.2010.Herculaneum
Jefferson County, NY
Ozone_1-hr.1990.Jefferson_Co
0.061
Ozone_8-hr.1997.Jefferson_Co
Jefferson County, OH
PM-10.1990.Jefferson_Co
Jefferson County; (part) Steubenville & Mingo Junction, OH
SO2.1978.Jefferson_Co
Jersey County, IL
Ozone_1-hr.1990.Jersey_Co
Johnstown, PA
Ozone_1-hr.1990.Johnstown
Ozone_8-hr.1997.Johnstown
9.2
PM-2.5.1997.Johnstown
PM-2.5.2006.Johnstown
Josephine County; Grants Pass, OR
PM-10.1990.Grants_Pass
Juneau; Mendenhall Valley area, AK
PM-10.1990.Juneau
Juniata County, PA
Ozone_1-hr.1990.Juniata_Co
Kalamazoo-Battle Creek, MI
Ozone_8-hr.1997.Kalamazoo
Kansas City, MO-KS
0.120
Other
7-7
MO-KS
Ozone_1-hr.1990.Kansas_City
Kent County and Queen Anne's County, MD
Ozone_1-hr.1990.Kent_and_Queen_Annes_Cos
Kent and Queen Anne's Counties, MD
Ozone_8-hr.1997.Kent_and_Queen_Annes_Cos
Kern County (Eastern Kern), CA
Ozone_8-hr.1997.East_Kern
Ozone_8-hr.2008.East_Kern
Ozone_8-hr.2015.East_Kern
Kewaunee County, WI
0.147
Ozone_1-hr.1990.Kewaunee_Co
Ozone_8-hr.1997.Kewaunee_Co
King County; Kent, WA
WA
PM-10.1990.Kent
King County; Seattle, WA
PM-10.1990.Seattle
Klamath Falls, OR
CO.1990.Klamath_Falls
PM-10.1990.Klamath_Falls
46
68
PM-2.5.2006.Klamath_Falls
Knox County and Lincoln County, ME
Ozone_1-hr.1990.Knox_and_Lincoln_Cos
Knoxville, TN
Ozone_1-hr.1990.Knoxville
Ozone_8-hr.1997.Knoxville
Ozone_8-hr.2008.Knoxville
16.8
PM-2.5.1997.Knoxville
Knoxville-Sevierville-La Follette, TN
PM-2.5.2006.Knoxville
La Porte County, IN
Ozone_8-hr.1997.La_Porte_Co
SO2.1978.La_Porte_Co
LaSalle County; Oglesby, IL
PM-10.1990.Oglesby
Lafayette, LA
0.105
Ozone_1-hr.1990.Lafayette
Lafourche Parish, LA
0.107
Ozone_1-hr.1990.Lafourche_Par
Lake Charles, LA
Ozone_1-hr.1990.Lake_Charles
Lake County (part); Lakeview, OR
3.2
PM-10.1990.Lakeview
Lake County, IN
SO2.1978.Lake_Co_IN
Lake County, OH
157
35
SO2.2010.Lake_Co_OH
Lake County; (part) Eastlake, Timberlake, Lakeline, Willoughby, Mentor, OH
SO2.1978.Lake_Co_OH
Lake County; Cities of East Chicago, Hammond, Whiting, and Gary, IN
PM-10.1990.East_Chicago
Lake County; Polson, MT
PM-10.1990.Polson
Lake County; Ronan, MT
PM-10.1990.Ronan
Lake Tahoe North Shore, CA
CO.1990.Lake_Tahoe_North
Lake Tahoe South Shore, CA
CO.1990.Lake_Tahoe_South
Lake Tahoe, NV
CO.1990.Lake_Tahoe
Lancaster, PA
Ozone_1-hr.1990.Lancaster
Ozone_8-hr.1997.Lancaster
Ozone_8-hr.2008.Lancaster
17.0
PM-2.5.1997.Lancaster
PM-2.5.2006.Lancaster
Lane County (part); Oakridge, OR
PM-10.1990.Oakridge
Lane County; Eugene/Springfield, OR
3.3
PM-10.1990.Eugene
Lansing-East Lansing, MI
Ozone_8-hr.1997.Lansing
Las Vegas, NV
Ozone_8-hr.1997.Las_Vegas
Ozone_8-hr.2015.Las_Vegas
2.3
CO.1990.Las_Vegas
Lauderdale County (part); TVA Colbert Plant, AL
SO2.1978.Lauderdale_Co
Laurel Area (Yellowstone County), MT
SO2.1978.Laurel
Lawrence County, PA
Ozone_1-hr.1990.Lawrence_Co
Lebanon County, PA
12.7
PM-2.5.2012.Lebanon_Co
Lemont, IL
98
SO2.2010.Lemont
Lewis & Clark County (part); City of East Helena and vicinity, MT
Lead.1992.East_Helena
Lewiston-Auburn, ME
Ozone_1-hr.1990.Lewiston
Lexington-Fayette, KY
Ozone_1-hr.1990.Lexington
Libby, MT
13.3
PM-2.5.1997.Libby
Liberty-Clairton, PA
21.2
PM-2.5.1997.Liberty-Clairton
53
32
PM-2.5.2006.Liberty-Clairton
Lima, OH
Ozone_8-hr.1997.Lima
Lincoln County; Libby and vicinity, MT
PM-10.1990.Libby
Logan, UT-ID
8-10
UT-ID
PM-2.5.2006.Logan
Longmont, CO
CO.1990.Longmont
Lorain County, OH
SO2.1978.Lorain_Co
Los Angeles County-South Coast Air Basin, CA
2.49
0.06
Lead.2008.LA-South_Coast
Los Angeles and San Bernardino Counties (Western Mojave Desert), CA
Ozone_8-hr.1997.LA-Desert
Los Angeles-San Bernardino Counties (West Mojave Desert), CA
Ozone_8-hr.2008.LA-Desert
Ozone_8-hr.2015.LA-Desert
Los Angeles-South Coast Air Basin, CA
0.330
0.167
Extreme
Ozone_1-hr.1990.LA-South_Coast
0.114
Ozone_8-hr.1997.LA-South_Coast
0.112
Ozone_8-hr.2008.LA-South_Coast
0.108
Ozone_8-hr.2015.LA-South_Coast
3.4
CO.1990.LA-South_Coast
Nitrogen Dioxide (1971)
2021
NO2.1990.LA-South_Coast
27.8
14.2
PM-2.5.1997.LA-South_Coast
49
PM-2.5.2006.LA-South_Coast
14.6
PM-2.5.2012.LA-South_Coast
Louisville, KY-IN
0.149
4 -5
KY-IN
Ozone_1-hr.1990.Louisville
Ozone_8-hr.1997.Louisville
16.9
10.5
PM-2.5.1997.Louisville
Louisville, KY-IN[Split]
Ozone_8-hr.2015.Louisville
Lowell, MA
CO.1990.Lowell
Lower Beaver Valley, PA
Lead.2008.Lower_Beaver_Valley
Lucas County, OH
SO2.1978.Lucas_Co
Lyons, PA
0.21
Lead.2008.Lyons
Macon, GA
Ozone_8-hr.1997.Macon
9.0
PM-2.5.1997.Macon
Madison County; Granite City Township and Nameoki Township, IL
PM-10.1990.Granite_City
Madison and Page Counties (Shenandoah NP), VA
Ozone_8-hr.1997.Madison_and_Page_Cos
Manchester, NH
Ozone_1-hr.1990.Manchester
CO.1990.Manchester
Manitowoc County, WI
Ozone_1-hr.1990.Manitowoc_Co
Ozone_8-hr.1997.Manitowoc_Co
Ozone_8-hr.2015.Manitowoc_Co
Marathon County: Rothschild Sub-city area, Rib Mountain, Weston, WI
SO2.1978.Rothschild
Maricopa and Pinal Counties; Phoenix planning area, AZ
PM-10.1990.Phoenix
Marion County: Lawrence, Washington, and Warrant Townships, IN
SO2.1978.Indianapolis
Marion County; Franklin Township, IN
Lead.1992.Franklin
Mariposa County, CA
Ozone_8-hr.2008.Mariposa_Co
Ozone_8-hr.2015.Mariposa_Co
Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA
Ozone_8-hr.1997.Mariposa_and_Tuolumne_Cos
Marshall, WV
SO2.2010.Marshall_Co
Martinsburg-Hagerstown, WV-MD
16.3
8.4
3-3
WV-MD
PM-2.5.1997.Hagerstown
Mason County, MI
Ozone_8-hr.1997.Mason_Co
Medford, OR
CO.1990.Medford
Memphis, TN
Ozone_1-hr.1990.Memphis
0.8
CO.1990.Memphis
Memphis, TN-AR
4-6
TN-AR
Ozone_8-hr.1997.Memphis
Memphis, TN-MS-AR
4-4-6
TN-MS-AR
Ozone_8-hr.2008.Memphis
Miami (Gila County), AZ
SO2.1978.Miami
Miami, AZ
PM-10.1990.Miami
111
SO2.2010.Miami
Miami-Fort Lauderdale-W. Palm Beach, FL
Ozone_1-hr.1990.Miami
Millinocket AQCR 109, ME
SO2.1978.Millinocket
Milwaukee, WI
Ozone_8-hr.2015.Milwaukee
SO2.1978.Milwaukee
Milwaukee-Racine, WI
0.183
Ozone_1-hr.1990.Milwaukee
Ozone_8-hr.1997.Milwaukee
PM-2.5.2006.Milwaukee
Minneapolis-St. Paul, MN
1.6
CO.1990.Minneapolis
SO2.1978.Minneapolis
Missoula, MT
CO.1990.Missoula
PM-10.1990.Missoula
Modesto, CA
CO.1990.Modesto
Mohave County (part); Bullhead City, AZ
PM-10.1990.Bullhead_City
Mono Basin, CA
11.8
PM-10.1990.Mono_Basin
Mono County; Mammoth Lake planning area, CA
PM-10.1990.Mammoth_Lake
Monterey Bay, CA
Ozone_1-hr.1990.Monterey
Morenci (Greenlee County), AZ
SO2.1978.Morenci
Morgan County, IN
100
SO2.2010.Morgan_Co_IN
Morgan County: Center Township, OH
SO2.1978.Morgan_Co
Morongo Band of Mission Indians, CA
Ozone_1-hr.1990.Morongo
Severe 17
Ozone_8-hr.1997.Morongo
Ozone_8-hr.2008.Morongo
Ozone_8-hr.2015.Morongo
Morristown, NJ
CO.1990.Morristown
Muhlenberg County, KY
SO2.1978.Muhlenberg_Co
Mun. of Guaynabo, PR
PM-10.1990.Guaynabo_Co
Muncie, IN
Ozone_8-hr.1997.Muncie
2.14
0.05
Lead.2008.Muncie
Murray County (Chattahoochee Nat Forest), GA
Ozone_8-hr.1997.Murray_Co
Muscatine County, IA
IA
SO2.1978.Muscatine_Co
Muscatine, IA
127
21
SO2.2010.Muscatine_Co
Muscogee County, GA
Lead.1992.Muscogee_Co
Muskegon County, MI
Ozone_8-hr.2015.Muskegon
Muskegon, MI
0.181
Ozone_1-hr.1990.Muskegon
Ozone_8-hr.1997.Muskegon
Muskingum River, OH
180
15
SO2.2010.Muskingum_River
Nashua, NH
CO.1990.Nashua
Nashville, TN
Ozone_1-hr.1990.Nashville
Nassau County, FL
129
SO2.2010.Nassau_Co
Navarro County, TX
SO2.2010.Navarro_Co
Nevada County (Western part), CA
Ozone_8-hr.1997.Nevada_Co
Ozone_8-hr.2008.Nevada_Co
Ozone_8-hr.2015.Nevada_Co
New Haven County, CT
PM-10.1990.New_Haven
New Haven-Meriden-Waterbury, CT
CO.1990.New_Haven
New Madrid County, MO
376
SO2.2010.New_Madrid_Co
New Manchester-Grant magisterial district in Hancock County, WV
SO2.1978.New_Manchester
New Orleans, LA
Ozone_1-hr.1990.New_Orleans
New York County, NY
PM-10.1990.New_York
New York-N. New Jersey-Long Island, NY-NJ-CT
0.201
2-2-1
NY-NJ-CT
Ozone_1-hr.1990.New_York
Ozone_8-hr.1997.New_York
Ozone_8-hr.2008.New_York
CO.1990.New_York
PM-2.5.1997.New_York
PM-2.5.2006.New_York
New York-Northern New Jersey-Long Island, NY-NJ-CT
2-1
Ozone_8-hr.2015.New_York
Nogales, AZ
40
29
PM-2.5.2006.Nogales
Norfolk-Virginia Beach-Newport News (Hampton Roads), VA
0.130
Ozone_1-hr.1990.Norfolk
Ozone_8-hr.1997.Norfolk
North Reading, PA
0.36
0.01
Lead.2008.Reading
Northern Wasatch Front, UT
UT
Ozone_8-hr.2015.Salt_Lake
Northumberland County, PA
Ozone_1-hr.1990.Northumberland_Co
Oakridge, OR
93
PM-2.5.2006.Oakridge
Ogden, UT
CO.1990.Ogden
PM-10.1990.Ogden
Olmsted County, MN
PM-10.1990.Rochester
Olmsted County; City of Rochester, MN
SO2.1978.Rochester
Oneida County: Rhinelander Sub-city area, WI
SO2.1978.Rhinelander
Owensboro, KY
Ozone_1-hr.1990.Owensboro
Paducah, KY
Ozone_1-hr.1990.Paducah
Parkersburg-Marietta, WV
0.152
Ozone_1-hr.1990.Parkersburg
Parkersburg-Marietta, WV-OH
3-5
WV-OH
Ozone_8-hr.1997.Parkersburg
16.0
PM-2.5.1997.Parkersburg
Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA
Ozone_8-hr.1997.Pechanga
Ozone_8-hr.2008.Pechanga
Ozone_8-hr.2015.Pechanga
Pekin, IL
211
SO2.2010.Pekin
Penns Grove, NJ
CO.1990.Penns_Grove
Peoria County: Hollis twp, IL
SO2.1978.Hollis
Peoria, IL
SO2.1978.Peoria
Perth Amboy, NJ
CO.1990.Perth_Amboy
Philadelphia-Camden County, PA-NJ
CO.1990.Philadelphia
Philadelphia-Wilmington, PA-NJ-DE
16.4
9.4
3-2-3
PA-NJ-DE
PM-2.5.1997.Philadelphia
26
PM-2.5.2006.Philadelphia
Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE
3-2-3-3
PA-NJ-MD-DE
Ozone_8-hr.1997.Philadelphia
Ozone_8-hr.2008.Philadelphia
Ozone_8-hr.2015.Philadelphia
Philadelphia-Wilmington-Trenton, PA-NJ-DE-MD
0.187
PA-NJ-DE-MD
Ozone_1-hr.1990.Philadelphia
Phoenix, AZ
0.141
Ozone_1-hr.1990.Phoenix
CO.1990.Phoenix
Phoenix-Mesa, AZ
Ozone_8-hr.1997.Phoenix
Ozone_8-hr.2008.Phoenix
Ozone_8-hr.2015.Phoenix
Pierce County; Tacoma, WA
PM-10.1990.Tacoma
Pike County, PA
Ozone_1-hr.1990.Pike_Co
Pima County; Ajo planning area, AZ
PM-10.1990.Ajo
Pima County; Rillito planning area, AZ
PM-10.1990.Rillito
Pinal County (part); West Pinal, AZ
31.9
PM-10.1990.Pinal_Co
Piti, GU
GU
SO2.1978.Piti
Piti-Cabras, GU
SO2.2010.Piti-Cabras
Pitkin County; Aspen, CO
PM-10.1990.Aspen
Pittsburgh, PA
CO.1990.Pittsburgh
Pittsburgh-Beaver Valley, PA
Ozone_1-hr.1990.Pittsburgh
Ozone_8-hr.1997.Pittsburgh
Ozone_8-hr.2008.Pittsburgh
10.0
PM-2.5.1997.Pittsburgh
PM-2.5.2006.Pittsburgh
Plumas County, CA
14.1
16.5
PM-2.5.2012.Plumas_Co
Pointe Coupee Parish, LA
Ozone_1-hr.1990.Pointe_Coupee
Polk County, TN
SO2.1978.Polk_Co
Portland, ME
0.156
Ozone_1-hr.1990.Portland_ME
Ozone_8-hr.1997.Portland_ME
Portland, OR
CO.1990.Portland_OR
Portland-Vancouver AQMA, OR-WA
10-10
OR-WA
Ozone_1-hr.1990.Portland_OR
Portsmouth-Dover-Rochester, NH
Ozone_1-hr.1990.Portsmouth
Pottawattamie County, IA
Lead.2008.Council_Bluffs
Poughkeepsie, NY
0.134
Ozone_1-hr.1990.Poughkeepsie
Ozone_8-hr.1997.Poughkeepsie
Power-Bannock Counties; Fort Hall Indian Reservation, ID
PM-10.1990.Fort_Hall
Power-Bannock Counties; Portneuf Valley Area, ID
PM-10.1990.Portneuf_Valley
Preble County, OH
0.118
Ozone_1-hr.1990.Preble_Co
Providence (all of RI), RI
RI
Ozone_1-hr.1990.Providence
Ozone_8-hr.1997.Providence
Provo, UT
CO.1990.Provo
44
PM-2.5.2006.Provo
Prowers County; Lamar, CO
PM-10.1990.Lamar
Raleigh-Durham, NC
Ozone_1-hr.1990.Raleigh
CO.1990.Raleigh
Raleigh-Durham-Chapel Hill, NC
Ozone_8-hr.1997.Raleigh
Ramsey County, MN
PM-10.1990.Minneapolis
Reading, PA
Ozone_1-hr.1990.Reading
Ozone_8-hr.1997.Reading
Ozone_8-hr.2008.Reading
PM-2.5.1997.Reading
Reno, NV
Ozone_1-hr.1990.Reno
CO.1990.Reno
Rhinelander, WI
151
SO2.2010.Rhinelander
Richmond, VA
0.142
Ozone_1-hr.1990.Richmond
Richmond-Petersburg, VA
Ozone_8-hr.1997.Richmond
Riverside County (Coachella Valley), CA
Ozone_8-hr.1997.Coachella_Valley
Ozone_8-hr.2008.Coachella_Valley
Ozone_8-hr.2015.Coachella_Valley
Riverside County; Coachella Valley planning area, CA
PM-10.1990.Coachella_Valley
Riverside, Los Angeles, Orange, & San Bernardino Counties; South Coast Air Basin, CA
PM-10.1990.LA-South_Coast
Rochester, NY
Ozone_8-hr.1997.Rochester
Rocky Mount, NC
Ozone_8-hr.1997.Rocky_Mount
Rome, GA
15.7
PM-2.5.1997.Rome
Rosebud County; Lame Deer, MT
PM-10.1990.Lame_Deer
Routt County (part); Steamboat Springs, CO
PM-10.1990.Steamboat_Springs
Rusk and Panola Counties, TX
SO2.2010.Rusk_Panola_Cos
Sacramento County, CA
PM-10.1990.Sacramento
Sacramento Metro, CA
0.160
Ozone_1-hr.1990.Sacramento
Ozone_8-hr.1997.Sacramento
Ozone_8-hr.2008.Sacramento
Ozone_8-hr.2015.Sacramento
Sacramento, CA
CO.1990.Sacramento
56
60
PM-2.5.2006.Sacramento
Saginaw-Bay City-Midland, MI
Ozone_1-hr.1990.Saginaw
Salem, OR
Ozone_1-hr.1990.Salem
CO.1990.Salem
Saline County, KS
0.42
KS
Lead.2008.Salina
Salt Lake City, UT
0.104
Ozone_1-hr.1990.Salt_Lake
CO.1990.Salt_Lake
48
34
PM-2.5.2006.Salt_Lake
Salt Lake County, UT
PM-10.1990.Salt_Lake
SO2.1978.Salt_Lake
San Antonio, TX
Ozone_8-hr.2015.San_Antonio
San Bernardino County, CA
PM-10.1990.San_Bernardino_Co
San Diego County, CA
Ozone_8-hr.2008.San_Diego
Ozone_8-hr.2015.San_Diego
San Diego, CA
0.185
Ozone_1-hr.1990.San_Diego
Ozone_8-hr.1997.San_Diego
CO.1990.San_Diego
San Francisco Bay Area, CA
Ozone_8-hr.1997.San_Francisco
Ozone_8-hr.2008.San_Francisco
Ozone_8-hr.2015.San_Francisco
PM-2.5.2006.San_Francisco
San Francisco-Bay Area, CA
Ozone_1-hr.1990.San_Francisco
San Francisco-Oakland-San Jose, CA
CO.1990.San_Francisco
San Joaquin Valley Air Basin, CA
20.5
PM-10.1990.San_Joaquin_Valley
San Joaquin Valley, CA
Ozone_1-hr.1990.San_Joaquin_Valley
0.115
Ozone_8-hr.1997.San_Joaquin_Valley
Ozone_8-hr.2008.San_Joaquin_Valley
Ozone_8-hr.2015.San_Joaquin_Valley
21.8
PM-2.5.1997.San_Joaquin_Valley
70
66
PM-2.5.2006.San_Joaquin_Valley
19.7
PM-2.5.2012.San_Joaquin_Valley
San Juan, PR
SO2.2010.San_Juan
San Luis Obispo (Eastern San Luis Obispo), CA
Ozone_8-hr.2008.San_Luis_Obispo
San Luis Obispo (Eastern part), CA
Ozone_8-hr.2015.San_Luis_Obispo
San Manual (Pinal County), AZ
SO2.1978.San_Manuel
San Miguel County; Telluride, CO
PM-10.1990.Telluride
Sanders County (part); Thompson Falls and vicinity, MT
PM-10.1990.Thompson_Falls
Santa Barbara-Santa Maria-Lompoc, CA
Ozone_1-hr.1990.Santa_Barbara
Santa Cruz County; Nogales planning area, AZ
PM-10.1990.Nogales
Schuylkill County, PA
Ozone_1-hr.1990.Schuylkill_Co
Scranton-Wilkes-Barre, PA
Ozone_1-hr.1990.Scranton
Ozone_8-hr.1997.Scranton
Seaford, DE
DE
Ozone_8-hr.2008.Sussex_Co
Seattle-Tacoma, WA
Ozone_1-hr.1990.Seattle
CO.1990.Seattle
Sheboygan County, WI
Ozone_8-hr.2015.Sheboygan
Sheboygan, WI
0.176
Ozone_1-hr.1990.Sheboygan
Shelby County, TN
Lead.1992.Memphis
Sheridan County; City of Sheridan, WY
WY
PM-10.1990.Sheridan
Shoreline Sheboygan County, WI
Ozone_8-hr.1997.Sheboygan_Shoreline
Ozone_8-hr.2008.Sheboygan_Shoreline
Shoshone County; City of Pinehurst, ID
PM-10.1990.Pinehurst
Shoshone County; Pinehurst Expansion Area, ID
PM-10.1990.Shoshone_Co_ex_Pinehurst
Silver Bow County; Butte, MT
PM-10.1990.Butte
Smyth County; White Top Mountain, VA
Ozone_1-hr.1990.White_Top_Mountain
Snyder County, PA
Ozone_1-hr.1990.Snyder_Co
Somerville, NJ
CO.1990.Somerville
South Bend-Elkhart, IN
Ozone_1-hr.1990.South_Bend
Ozone_8-hr.1997.South_Bend
Southeast Desert Modified AQMA, CA
0.240
Ozone_1-hr.1990.LA-Desert
Southern Wasatch Front, UT
Ozone_8-hr.2015.Provo
Southwest Indiana, IN
175
SO2.2010.Daviess_Co
Spokane County, WA
PM-10.1990.Spokane
Spokane, WA
CO.1990.Spokane
Springfield (W. Mass), MA
Ozone_8-hr.1997.Springfield
Springfield (Western MA), MA
Ozone_1-hr.1990.Springfield
Springfield, MA
0.9
CO.1990.Springfield
St. Bernard Parish, LA
287
SO2.2010.St_Bernard_Par
St. Clair, MI
SO2.2010.St_Clair
St. James Parish, LA
0.109
Ozone_1-hr.1990.St_James_Par
St. Lawrence County, NY
88
SO2.2010.St_Lawrence_Co
St. Louis, MO
CO.1990.St_Louis
St. Louis, MO-IL
7-5
MO-IL
Ozone_1-hr.1990.St_Louis
Ozone_8-hr.1997.St_Louis
Ozone_8-hr.2015.St_Louis
17.5
10.2
PM-2.5.1997.St_Louis
St. Louis-St. Charles-Farmington, MO-IL
Ozone_8-hr.2008.St_Louis
St. Mary Parish, LA
Ozone_1-hr.1990.St_Mary_Par
State College, PA
Ozone_8-hr.1997.State_College
Steubenville, OH
Ozone_1-hr.1990.Steubenville
Steubenville, OH-WV
119
58
5-3
OH-WV
SO2.2010.Steubenville
Steubenville-Weirton, OH-WV
Ozone_8-hr.1997.Weirton
PM-2.5.1997.Weirton
20
PM-2.5.2006.Weirton
Stockton, CA
CO.1990.Stockton
Sullivan County, TN
196
87
SO2.2010.Kingsport
Susquehanna County, PA
Ozone_1-hr.1990.Susquehanna_Co
Sussex County, DE
Ozone_1-hr.1990.Sussex_Co
Sutter Buttes, CA
Ozone_8-hr.2015.Sutter_Buttes
Sutter County (part) (Sutter Buttes), CA
Ozone_8-hr.1997.Sutter_Buttes
Syracuse, NY
CO.1990.Syracuse
Tacoma, WA
PM-2.5.2006.Tacoma
Tampa, FL
1.77
Lead.2008.Tampa
Tampa-St. Petersburg-Clearwater, FL
Ozone_1-hr.1990.Tampa
Tanguisson, GU
SO2.1978.Tanguisson
Tazewell County: Groveland twp, IL
SO2.1978.Groveland
Terre Haute, IN
Ozone_8-hr.1997.Terre_Haute
150
SO2.2010.Vigo_Co
Thurston County; Cities of Olympia, Tumwater, and Lacey, WA
PM-10.1990.Olympia
Tioga County, PA
Ozone_8-hr.1997.Tioga_Co
Titus County, TX
SO2.2010.Titus_Co
Toledo, OH
Ozone_1-hr.1990.Toledo
Ozone_8-hr.1997.Toledo
Toms River, NJ
CO.1990.Toms_River
Tooele County, UT
SO2.1978.Tooele_Co
Trenton, NJ
CO.1990.Trenton
Trona, CA
PM-10.1990.Trona
Troy, AL
1.35
Lead.2008.Troy
Tucson, AZ
CO.1990.Tucson
Tuolumne County, CA
Ozone_8-hr.2015.Tuolumne_Co
Tuscan Buttes, CA
Ozone_8-hr.2008.Tuscan_Buttes
Ozone_8-hr.2015.Tuscan_Buttes
Uinta Basin, UT
Ozone_8-hr.2015.Uinta_Basin
Union County; LaGrande, OR
PM-10.1990.LaGrande
Upper Green River Basin Area, WY
Ozone_8-hr.2008.Green_River
Utah County, UT
PM-10.1990.Utah_Co
Vancouver, WA
CO.1990.Vancouver
Ventura County (part), CA
Ozone_8-hr.1997.Ventura_Co
Ventura County, CA
Ozone_1-hr.1990.Ventura_Co
Ozone_8-hr.2008.Ventura_Co
Ozone_8-hr.2015.Ventura_Co
Vermillion County; Part of Clinton Township, IN
PM-10.1990.Clinton
Victoria, TX
Ozone_1-hr.1990.Victoria
Vigo County, IN
SO2.1978.Vigo_Co
Walla Walla County; Wallula, WA
3.5
PM-10.1990.Wallula
Waltham, MA
CO.1990.Waltham
Walworth County, WI
Ozone_1-hr.1990.Walworth
Warren County, NJ
SO2.1978.Warren_Co
Warren County, PA
Ozone_1-hr.1990.Warren_Co
Warren County: Conewago Twp, PA
SO2.1978.Conewago
Warren County: Warren Boro, Pleasant Twp, Glade Twp, PA
SO2.1978.Warren_Boro
Warren, PA
105
SO2.2010.Warren_Co
Washington County: Waterford Township, OH
SO2.1978.Waterford
Washington, DC-MD-VA
3-3-3
DC-MD-VA
Ozone_1-hr.1990.Washington
Ozone_8-hr.1997.Washington
Ozone_8-hr.2008.Washington
Ozone_8-hr.2015.Washington
CO.1990.Washington
8.8
PM-2.5.1997.Washington
Washoe County; Reno planning area, NV
4.0
PM-10.1990.Reno
Wayne County, MI
PM-10.1990.Detroit
Wayne County, PA
Ozone_1-hr.1990.Wayne_Co
Wayne County: Boston, Center, Franklin, Wayne & Webster Townships, IN
SO2.1978.Wayne_Co
West Central Pinal, AZ
PM-2.5.2006.Pinal_Co
West Silver Valley, ID
13.1
10.6
PM-2.5.2012.West_Silver_Valley
Whatcom County, WA
SO2.2010.Whatcom_Co
Wheeling, WV-OH
Ozone_8-hr.1997.Wheeling
9.3
PM-2.5.1997.Wheeling
Williamson County, TN
Lead.1992.Nashville
Winston-Salem, NC
CO.1990.Winston-Salem
Worcester, MA
CO.1990.Worcester
Yakima County, WA
3.1
PM-10.1990.Yakima
Yakima, WA
CO.1990.Yakima
York, PA
Ozone_1-hr.1990.York
Ozone_8-hr.1997.York
PM-2.5.1997.York
Youngstown-Warren-Sharon, OH-PA
OH-PA
Ozone_8-hr.1997.Youngstown
Youngstown-Warren-Sharon, OH-PA[Split]
Ozone_1-hr.1990.Youngstown
Yuba City, CA
Ozone_1-hr.1990.Yuba_City
Yuba City-Marysville, CA
54
PM-2.5.2006.Yuba_City
Yuma, AZ
Ozone_8-hr.2015.Yuma
PM-10.1990.Yuma