AQCRs (Air Quality Control Regions)

April 19, 2024

AQS Reference Table

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To sort on a column, click the column header. That column will be (subtly) highlighted. Particularly useful is the search box at the top of the table on the right. Separate mulitiple search terms with a space. Search looks across all columns in the table.

Downoad a csv version: aqcrs.csv

AQCR Code AQCR Name State Name
210 ABILENE-WICHITA FALLS Texas
001 ALABAMA AND TOMBIGBEE RIVERS Alabama
152 ALBUQUERQUE-MID RIO GRANDE New Mexico
231 ALLEGHENY West Virginia
211 AMARILLO-LUBBOCK Texas
107 ANDROSCOGGIN VALLEY Maine
107 ANDROSCOGGIN VALLEY New Hampshire
101 APPALACHIAN Kentucky
012 ARIZONA-NEW MEXICO-SOUTHERN BORDER Arizona
012 ARIZONA-NEW MEXICO-SOUTHERN BORDER New Mexico
108 AROOSTOOK Maine
053 AUGUSTA-AIKEN Georgia
053 AUGUSTA-AIKEN South Carolina
212 AUSTIN-WACO Texas
117 BERKSHIRE Massachusetts
140 BILLINGS Montana
205 BLACKHILLS-RAPID CITY South Dakota
102 BLUEGRASS Kentucky
213 BROWNSVILLE-LAREDO Texas
065 BURLINGTON-KEOKUK Illinois
065 BURLINGTON-KEOKUK Iowa
198 CAMDEN-SUMTER South Carolina
241 CASPER Wyoming
016 CENTRAL ARKANSAS Arkansas
048 CENTRAL FLORIDA Florida
054 CENTRAL GEORGIA Georgia
112 CENTRAL MARYLAND Maryland
118 CENTRAL MASSACHUSETTS Massachusetts
122 CENTRAL MICHIGAN Michigan
127 CENTRAL MINNESOTA Minnesota
158 CENTRAL NEW YORK New York
184 CENTRAL OKLAHOMA Oklahoma
190 CENTRAL OREGON Oregon
195 CENTRAL PENNSYLVANIA Pennsylvania
222 CENTRAL VIRGINIA Virginia
232 CENTRAL WEST VIRGINIA West Virginia
159 CHAMPLAIN VALLEY New York
159 CHAMPLAIN VALLEY Vermont
199 CHARLESTON South Carolina
055 CHATTANOOGA Georgia
055 CHATTANOOGA Tennessee
013 CLARK-MOHAVE Arizona
013 CLARK-MOHAVE Nevada
200 COLUMBIA South Carolina
002 COLUMBUS-PHENIX CITY Alabama
002 COLUMBUS-PHENIX CITY Georgia
034 COMANCHE Colorado
008 COOK INLET Alaska
214 CORPUS CHRISTI-VICTORIA Texas
250 COUNTRY OF MEXICO Country Of Mexico
113 CUMBERLAND-KEYSER Maryland
113 CUMBERLAND-KEYSER West Virginia
248 Country of Canada Canada
173 DAYTON Ohio
109 DOWN EAST Maine
129 DULUTH-SUPERIOR Minnesota
129 DULUTH-SUPERIOR Wisconsin
003 EAST ALABAMA Alabama
066 EAST CENTRAL ILLINOIS Illinois
076 EAST CENTRAL INDIANA Indiana
041 EASTERN CONNECTICUT Connecticut
061 EASTERN IDAHO Idaho
165 EASTERN MOUNTAIN North Carolina
191 EASTERN OREGON Oregon
233 EASTERN PANHANDLE West Virginia
166 EASTERN PIEDMONT North Carolina
114 EASTERN SHORE Maryland
207 EASTERN TENNESSEE-SOUTHWESTERN VIRGINIA Tennessee
207 EASTERN TENNESSEE-SOUTHWESTERN VIRGINIA Virginia
062 EASTERN WASHINGTON-NORTHERN IDAHO Idaho
062 EASTERN WASHINGTON-NORTHERN IDAHO Washington
153 EL PASO-LAS CRUCES-ALAMOGORDO New Mexico
153 EL PASO-LAS CRUCES-ALAMOGORDO Texas
077 EVANSVILLE-OWENSBORO-HENDERSON Indiana
077 EVANSVILLE-OWENSBORO-HENDERSON Kentucky
201 FLORENCE South Carolina
014 FOUR CORNERS Arizona
014 FOUR CORNERS Colorado
014 FOUR CORNERS New Mexico
014 FOUR CORNERS Utah
160 GENESEE-FINGER LAKES New York
204 GEORGETOWN South Carolina
035 GRAND MESA Colorado
023 GREAT BASIN VALLEY California
141 GREAT FALLS Montana
174 GREATER METROPOLITAN CLEVELAND Ohio
202 GREENVILLE-SPARTANBURG South Carolina
203 GREENWOOD South Carolina
246 GUAM Guam
223 HAMPTON ROADS Virginia
042 HARTFORD-NEW HAVEN-SPRINGFIELD Connecticut
042 HARTFORD-NEW HAVEN-SPRINGFIELD Massachusetts
060 HAWAII Hawaii
142 HELENA Montana
161 HUDSON VALLEY New York
103 HUNTINGTON-ASHLAND-PORTSMOUTH-IRONTON Kentucky
103 HUNTINGTON-ASHLAND-PORTSMOUTH-IRONTON Ohio
103 HUNTINGTON-ASHLAND-PORTSMOUTH-IRONTON West Virginia
063 IDAHO Idaho
049 JACKSONVILLE-BRUNSWICK Florida
049 JACKSONVILLE-BRUNSWICK Georgia
234 KANAWHA VALLEY West Virginia
237 LAKE MICHIGAN Wisconsin
145 LINCOLN-BEATRICE-FAIRBURY Nebraska
078 LOUISVILLE Indiana
078 LOUISVILLE Kentucky
175 MANSFIELD-MARION Ohio
121 MERRIMACK VALLEY-SOUTHERN NEW HAMPSHIRE Massachusetts
121 MERRIMACK VALLEY-SOUTHERN NEW HAMPSHIRE New Hampshire
056 METROPOLITAN ATLANTA Georgia
115 METROPOLITAN BALTIMORE Maryland
004 METROPOLITAN BIRMINGHAM Alabama
064 METROPOLITAN BOISE Idaho
119 METROPOLITAN BOSTON Massachusetts
167 METROPOLITAN CHARLOTTE North Carolina
167 METROPOLITAN CHARLOTTE South Carolina
242 METROPOLITAN CHEYENNE Wyoming
067 METROPOLITAN CHICAGO Illinois
067 METROPOLITAN CHICAGO Indiana
079 METROPOLITAN CINCINNATI Indiana
079 METROPOLITAN CINCINNATI Kentucky
079 METROPOLITAN CINCINNATI Ohio
176 METROPOLITAN COLUMBUS Ohio
215 METROPOLITAN DALLAS-FORT WORTH Texas
036 METROPOLITAN DENVER Colorado
123 METROPOLITAN DETROIT-PORT HURON Michigan
068 METROPOLITAN DUBUQUE Illinois
068 METROPOLITAN DUBUQUE Iowa
068 METROPOLITAN DUBUQUE Wisconsin
130 METROPOLITAN FARGO-MOORHEAD Minnesota
130 METROPOLITAN FARGO-MOORHEAD North Dakota
017 METROPOLITAN FORT SMITH Arkansas
017 METROPOLITAN FORT SMITH Oklahoma
216 METROPOLITAN HOUSTON-GALVESTON Texas
080 METROPOLITAN INDIANAPOLIS Indiana
094 METROPOLITAN KANSAS CITY Kansas
094 METROPOLITAN KANSAS CITY Missouri
024 METROPOLITAN LOS ANGELES California
018 METROPOLITAN MEMPHIS Arkansas
018 METROPOLITAN MEMPHIS Mississippi
018 METROPOLITAN MEMPHIS Tennessee
085 METROPOLITAN OMAHA-COUNCIL BLUFFS Iowa
085 METROPOLITAN OMAHA-COUNCIL BLUFFS Nebraska
045 METROPOLITAN PHILADELPHIA Delaware
045 METROPOLITAN PHILADELPHIA New Jersey
045 METROPOLITAN PHILADELPHIA Pennsylvania
110 METROPOLITAN PORTLAND Maine
120 METROPOLITAN PROVIDENCE Massachusetts
120 METROPOLITAN PROVIDENCE Rhode Island
069 METROPOLITAN QUAD CITIES Illinois
069 METROPOLITAN QUAD CITIES Iowa
217 METROPOLITAN SAN ANTONIO Texas
086 METROPOLITAN SIOUX CITY Iowa
086 METROPOLITAN SIOUX CITY Nebraska
086 METROPOLITAN SIOUX CITY South Dakota
087 METROPOLITAN SIOUX FALLS Iowa
087 METROPOLITAN SIOUX FALLS South Dakota
070 METROPOLITAN ST. LOUIS Illinois
070 METROPOLITAN ST. LOUIS Missouri
124 METROPOLITAN TOLEDO Michigan
124 METROPOLITAN TOLEDO Ohio
208 MIDDLE TENNESSEE Tennessee
218 MIDLAND-ODESSA-SAN ANGELO Texas
143 MILES CITY Montana
131 MINNEAPOLIS-ST. PAUL Minnesota
134 MISSISSIPPI DELTA Mississippi
144 MISSOULA Montana
005 MOBILE-PENSACOLA-PANAMA CITY-SOUTHERN MISSISSIPPI Alabama
005 MOBILE-PENSACOLA-PANAMA CITY-SOUTHERN MISSISSIPPI Florida
005 MOBILE-PENSACOLA-PANAMA CITY-SOUTHERN MISSISSIPPI Mississippi
019 MONROE-EL DORADO Arkansas
019 MONROE-EL DORADO Louisiana
047 NATIONAL CAPITAL District Of Columbia
047 NATIONAL CAPITAL Maryland
047 NATIONAL CAPITAL Virginia
146 NEBRASKA Nebraska
147 NEVADA Nevada
149 NEW HAMPSHIRE New Hampshire
150 NEW JERSEY New Jersey
043 NEW JERSEY-NEW YORK-CONNECTICUT Connecticut
043 NEW JERSEY-NEW YORK-CONNECTICUT New Jersey
043 NEW JERSEY-NEW YORK-CONNECTICUT New York
162 NIAGARA FRONTIER New York
025 NORTH CENTRAL COAST California
071 NORTH CENTRAL ILLINOIS Illinois
089 NORTH CENTRAL IOWA Iowa
096 NORTH CENTRAL KANSAS Kansas
104 NORTH CENTRAL KENTUCKY Kentucky
185 NORTH CENTRAL OKLAHOMA Oklahoma
235 NORTH CENTRAL WEST VIRGINIA West Virginia
238 NORTH CENTRAL WISCONSIN Wisconsin
026 NORTH COAST California
172 NORTH DAKOTA North Dakota
020 NORTHEAST ARKANSAS Arkansas
057 NORTHEAST GEORGIA Georgia
081 NORTHEAST INDIANA Indiana
088 NORTHEAST IOWA Iowa
095 NORTHEAST KANSAS Kansas
135 NORTHEAST MISSISSIPPI Mississippi
151 NORTHEAST PENNSYLVANIA-UPPER DELAWARE VALLEY New Jersey
151 NORTHEAST PENNSYLVANIA-UPPER DELAWARE VALLEY Pennsylvania
027 NORTHEAST PLATEAU California
186 NORTHEASTERN OKLAHOMA Oklahoma
154 NORTHEASTERN PLAINS New Mexico
224 NORTHEASTERN VIRGINIA Virginia
009 NORTHERN ALASKA Alaska
168 NORTHERN COASTAL PLAIN North Carolina
137 NORTHERN MISSOURI Missouri
136 NORTHERN PIEDMONT North Carolina
227 NORTHERN WASHINGTON Washington
021 NORTHWEST ARKANSAS Arkansas
090 NORTHWEST IOWA Iowa
097 NORTHWEST KANSAS Kansas
111 NORTHWEST MAINE Maine
132 NORTHWEST MINNESOTA Minnesota
148 NORTHWEST NEVADA Nevada
177 NORTHWEST OHIO Ohio
192 NORTHWEST OREGON Oregon
178 NORTHWEST PENNSYLVANIA-YOUNGSTOWN Ohio
178 NORTHWEST PENNSYLVANIA-YOUNGSTOWN Pennsylvania
044 NORTHWESTERN CONNECTICUT Connecticut
187 NORTHWESTERN OKLAHOMA Oklahoma
228 OLYMPIA-NORTHWEST WASHINGTON Washington
072 PADUCAH-CAIRO Illinois
072 PADUCAH-CAIRO Kentucky
179 PARKERSBURG-MARIETTA Ohio
179 PARKERSBURG-MARIETTA West Virginia
037 PAWNEE Colorado
155 PECOS-PERMIAN BASIN New Mexico
015 PHOENIX-TUCSON Arizona
193 PORTLAND Oregon
193 PORTLAND Washington
244 PUERTO RICO Puerto Rico
229 PUGET SOUND Washington
073 ROCKFORD-JANESVILLE-BELOIT Illinois
073 ROCKFORD-JANESVILLE-BELOIT Wisconsin
028 SACRAMENTO VALLEY California
029 SAN DIEGO California
030 SAN FRANCISCO BAY AREA California
038 SAN ISABEL Colorado
031 SAN JOAQUIN VALLEY California
039 SAN LUIS Colorado
169 SANDHILLS North Carolina
180 SANDUSKY Ohio
058 SAVANNAH-BEAUFORT Georgia
058 SAVANNAH-BEAUFORT South Carolina
022 SHREVEPORT-TEXARKANA-TYLER Arkansas
022 SHREVEPORT-TEXARKANA-TYLER Louisiana
022 SHREVEPORT-TEXARKANA-TYLER Oklahoma
022 SHREVEPORT-TEXARKANA-TYLER Texas
082 SOUTH BEND-ELKHART-BENTON HARBOR Indiana
082 SOUTH BEND-ELKHART-BENTON HARBOR Michigan
010 SOUTH CENTRAL ALASKA Alaska
032 SOUTH CENTRAL COAST California
092 SOUTH CENTRAL IOWA Iowa
099 SOUTH CENTRAL KANSAS Kansas
105 SOUTH CENTRAL KENTUCKY Kentucky
125 SOUTH CENTRAL MICHIGAN Michigan
196 SOUTH CENTRAL PENNSYLVANIA Pennsylvania
230 SOUTH CENTRAL WASHINGTON Washington
206 SOUTH DAKOTA South Dakota
006 SOUTHEAST ALABAMA Alabama
033 SOUTHEAST DESERT California
050 SOUTHEAST FLORIDA Florida
074 SOUTHEAST ILLINOIS Illinois
091 SOUTHEAST IOWA Iowa
098 SOUTHEAST KANSAS Kansas
128 SOUTHEAST MINNESOTA-LA CROSSE Minnesota
128 SOUTHEAST MINNESOTA-LA CROSSE Wisconsin
138 SOUTHEAST MISSOURI Missouri
011 SOUTHEASTERN ALASKA Alaska
188 SOUTHEASTERN OKLAHOMA Oklahoma
239 SOUTHEASTERN WISCONSIN Wisconsin
170 SOUTHERN COASTAL PLAIN North Carolina
046 SOUTHERN DELAWARE Delaware
083 SOUTHERN INDIANA Indiana
106 SOUTHERN LOUISIANA-SOUTHEAST TEXAS Louisiana
106 SOUTHERN LOUISIANA-SOUTHEAST TEXAS Texas
116 SOUTHERN MARYLAND Maryland
163 SOUTHERN TIER EAST New York
164 SOUTHERN TIER WEST New York
236 SOUTHERN WEST VIRGINIA West Virginia
240 SOUTHERN WISCONSIN Wisconsin
051 SOUTHWEST FLORIDA Florida
059 SOUTHWEST GEORGIA Georgia
093 SOUTHWEST IOWA Iowa
100 SOUTHWEST KANSAS Kansas
133 SOUTHWEST MINNESOTA Minnesota
139 SOUTHWEST MISSOURI Missouri
194 SOUTHWEST OREGON Oregon
197 SOUTHWEST PENNSYLVANIA Pennsylvania
156 SOUTHWESTERN MOUNTAINS-AUGUSTINE PLAINS New Mexico
189 SOUTHWESTERN OKLAHOMA Oklahoma
225 STATE CAPITAL Virginia
181 STEUBENVILLE-WEIRTON-WHEELING Ohio
181 STEUBENVILLE-WEIRTON-WHEELING West Virginia
007 TENNESSEE RIVER VALLEY-CUMBERLAND MOUNTAINS Alabama
007 TENNESSEE RIVER VALLEY-CUMBERLAND MOUNTAINS Tennessee
247 U.S. VIRGIN ISLANDS Virgin Islands
126 UPPER MICHIGAN Michigan
157 UPPER RIO GRANDE VALLEY New Mexico
219 UTAH Utah
226 VALLEY OF VIRGINIA Virginia
221 VERMONT Vermont
084 WABASH VALLEY Indiana
220 WASATCH FRONT Utah
052 WEST CENTRAL FLORIDA Florida
075 WEST CENTRAL ILLINOIS Illinois
171 WESTERN MOUNTAIN North Carolina
209 WESTERN TENNESSEE Tennessee
182 WILMINGTON-CHILLICOTHE-LOGAN Ohio
243 WYOMING Wyoming
040 YAMPA Colorado
183 ZANESVILLE-CAMBRIDGE Ohio