Ozone Seasons

March 29, 2024

AQS Reference Table

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Downoad a csv version: ozone_seasons.csv

State Code County Code Site Number State Name County Name Begin Month Begin Day End Month End Day
01 Alabama 3 1 10 31
01 073 0023 Alabama Jefferson 1 1 12 31
02 Alaska 4 1 10 31
02 090 0034 Alaska Fairbanks North Star 1 1 12 31
04 Arizona 1 1 12 31
04 005 1008 Arizona Coconino 1 1 12 31
04 007 0010 Arizona Gila 1 1 12 31
04 012 8000 Arizona La Paz 1 1 12 31
04 013 7022 Arizona Maricopa 1 1 12 31
04 013 7024 Arizona Maricopa 1 1 12 31
04 013 9997 Arizona Maricopa 1 1 12 31
04 019 1028 Arizona Pima 1 1 12 31
04 021 8001 Arizona Pinal 1 1 12 31
04 025 8033 Arizona Yavapai 1 1 12 31
04 025 8034 Arizona Yavapai 1 1 12 31
04 027 8011 Arizona Yuma 1 1 12 31
05 Arkansas 3 1 11 30
05 119 0007 Arkansas Pulaski 1 1 12 31
06 California 1 1 12 31
06 017 0011 California El Dorado 1 1 12 31
06 017 0012 California El Dorado 4 1 10 31
06 017 0020 California El Dorado 4 1 10 31
06 019 0011 California Fresno 1 1 12 31
06 027 0002 California Inyo 1 1 12 31
06 043 0006 California Mariposa 4 1 10 31
06 057 0007 California Nevada 4 1 10 31
06 065 8001 California Riverside 1 1 12 31
06 067 0006 California Sacramento 1 1 12 31
06 073 1018 California San Diego 1 1 12 31
06 073 1022 California San Diego 1 1 12 31
06 085 0005 California Santa Clara 1 1 12 31
06 101 0004 California Sutter 4 1 10 31
06 103 0004 California Tehama 4 1 10 31
06 107 0006 California Tulare 4 1 10 31
08 Colorado 1 1 12 31
08 031 0026 Colorado Denver 1 1 12 31
09 Connecticut 3 1 9 30
09 005 0005 Connecticut Litchfield 1 1 12 31
09 009 0027 Connecticut New Haven 1 1 12 31
10 Delaware 3 1 10 31
10 003 2004 Delaware New Castle 1 1 12 31
11 District Of Columbia 3 1 10 31
11 001 0043 District Of Columbia District of Columbia 1 1 12 31
12 Florida 1 1 12 31
12 011 0034 Florida Broward 1 1 12 31
12 057 3002 Florida Hillsborough 1 1 12 31
12 129 0001 Florida Wakulla 1 1 12 31
13 Georgia 3 1 10 31
13 089 0002 Georgia DeKalb 1 1 12 31
15 Hawaii 1 1 12 31
15 003 0010 Hawaii Honolulu 1 1 12 31
16 Idaho 4 1 9 30
16 001 0010 Idaho Ada 1 1 12 31
17 Illinois 3 1 10 31
17 019 1001 Illinois Champaign 1 1 12 31
17 031 4201 Illinois Cook 1 1 12 31
18 Indiana 3 1 10 31
18 097 0078 Indiana Marion 1 1 12 31
19 Iowa 3 1 10 31
19 163 0015 Iowa Scott 1 1 12 31
20 Kansas 3 1 10 31
20 209 0021 Kansas Wyandotte 1 1 12 31
21 Kentucky 3 1 10 31
21 111 0067 Kentucky Jefferson 1 1 12 31
22 Louisiana 1 1 12 31
22 001 Louisiana Acadia 1 1 12 31
22 003 Louisiana Allen 1 1 12 31
22 005 Louisiana Ascension 1 1 12 31
22 007 Louisiana Assumption 1 1 12 31
22 009 Louisiana Avoyelles 1 1 12 31
22 011 Louisiana Beauregard 1 1 12 31
22 013 Louisiana Bienville 3 1 10 31
22 015 Louisiana Bossier 3 1 10 31
22 017 Louisiana Caddo 3 1 10 31
22 019 Louisiana Calcasieu 1 1 12 31
22 021 Louisiana Caldwell 3 1 10 31
22 023 Louisiana Cameron 1 1 12 31
22 025 Louisiana Catahoula 3 1 10 31
22 027 Louisiana Claiborne 3 1 10 31
22 029 Louisiana Concordia 3 1 10 31
22 031 Louisiana De Soto 3 1 10 31
22 033 Louisiana East Baton Rouge 1 1 12 31
22 033 0009 Louisiana East Baton Rouge 1 1 12 31
22 035 Louisiana East Carroll 3 1 10 31
22 037 Louisiana East Feliciana 1 1 12 31
22 039 Louisiana Evangeline 1 1 12 31
22 041 Louisiana Franklin 3 1 10 31
22 043 Louisiana Grant 1 1 12 31
22 045 Louisiana Iberia 1 1 12 31
22 047 Louisiana Iberville 1 1 12 31
22 049 Louisiana Jackson 3 1 10 31
22 051 Louisiana Jefferson 1 1 12 31
22 053 Louisiana Jefferson Davis 1 1 12 31
22 055 Louisiana Lafayette 1 1 12 31
22 057 Louisiana Lafourche 1 1 12 31
22 059 Louisiana La Salle 3 1 10 31
22 061 Louisiana Lincoln 3 1 10 31
22 063 Louisiana Livingston 1 1 12 31
22 065 Louisiana Madison 3 1 10 31
22 067 Louisiana Morehouse 3 1 10 31
22 069 Louisiana Natchitoches 3 1 10 31
22 071 Louisiana Orleans 1 1 12 31
22 073 Louisiana Ouachita 3 1 10 31
22 075 Louisiana Plaquemines 1 1 12 31
22 077 Louisiana Pointe Coupee 1 1 12 31
22 079 Louisiana Rapides 1 1 12 31
22 081 Louisiana Red River 3 1 10 31
22 083 Louisiana Richland 3 1 10 31
22 085 Louisiana Sabine 3 1 10 31
22 087 Louisiana St. Bernard 1 1 12 31
22 089 Louisiana St. Charles 1 1 12 31
22 091 Louisiana St. Helena 1 1 12 31
22 093 Louisiana St. James 1 1 12 31
22 095 Louisiana St. John the Baptist 1 1 12 31
22 097 Louisiana St. Landry 1 1 12 31
22 099 Louisiana St. Martin 1 1 12 31
22 101 Louisiana St. Mary 1 1 12 31
22 103 Louisiana St. Tammany 1 1 12 31
22 105 Louisiana Tangipahoa 1 1 12 31
22 107 Louisiana Tensas 3 1 10 31
22 109 Louisiana Terrebonne 1 1 12 31
22 111 Louisiana Union 3 1 10 31
22 113 Louisiana Vermilion 1 1 12 31
22 115 Louisiana Vernon 1 1 12 31
22 117 Louisiana Washington 1 1 12 31
22 119 Louisiana Webster 3 1 10 31
22 121 Louisiana West Baton Rouge 1 1 12 31
22 123 Louisiana West Carroll 3 1 10 31
22 125 Louisiana West Feliciana 1 1 12 31
22 127 Louisiana Winn 3 1 10 31
23 Maine 4 1 9 30
23 009 0103 Maine Hancock 1 1 12 31
24 Maryland 3 1 10 31
24 023 0002 Maryland Garrett 1 1 12 31
24 033 0030 Maryland Prince George's 1 1 12 31
25 Massachusetts 3 1 9 30
25 025 0042 Massachusetts Suffolk 1 1 12 31
26 Michigan 3 1 10 31
26 081 0020 Michigan Kent 1 1 12 31
26 163 0001 Michigan Wayne 1 1 12 31
27 Minnesota 3 1 10 31
27 003 1002 Minnesota Anoka 1 1 12 31
28 Mississippi 3 1 10 31
28 049 0020 Mississippi Hinds 1 1 12 31
29 Missouri 3 1 10 31
29 510 0085 Missouri St. Louis City 1 1 12 31
30 Montana 4 1 9 30
30 049 0004 Montana Lewis and Clark 1 1 12 31
31 Nebraska 3 1 10 31
31 055 0019 Nebraska Douglas 1 1 12 31
32 Nevada 1 1 12 31
32 003 0023 Nevada Clark 4 1 9 30
32 003 0540 Nevada Clark 1 1 12 31
32 031 0016 Nevada Washoe 1 1 12 31
33 New Hampshire 3 1 9 30
33 011 5001 New Hampshire Hillsborough 1 1 12 31
33 015 0018 New Hampshire Rockingham 1 1 12 31
34 New Jersey 3 1 10 31
34 013 0003 New Jersey Essex 1 1 12 31
35 New Mexico 1 1 12 31
35 001 0023 New Mexico Bernalillo 1 1 12 31
36 New York 3 1 10 31
36 055 1007 New York Monroe 1 1 12 31
36 081 0124 New York Queens 1 1 12 31
36 101 0003 New York Steuben 1 1 12 31
37 North Carolina 3 1 10 31
37 011 0002 North Carolina Avery 4 1 10 31
37 075 0001 North Carolina Graham 4 1 10 31
37 087 0035 North Carolina Haywood 4 1 10 31
37 087 0036 North Carolina Haywood 4 1 10 31
37 119 0041 North Carolina Mecklenburg 1 1 12 31
37 183 0014 North Carolina Wake 1 1 12 31
37 199 0004 North Carolina Yancey 4 1 10 31
38 North Dakota 3 1 9 30
38 017 1004 North Dakota Cass 1 1 12 31
39 Ohio 3 1 10 31
39 035 0060 Ohio Cuyahoga 1 1 12 31
39 061 0040 Ohio Hamilton 1 1 12 31
39 135 1001 Ohio Preble 1 1 12 31
40 Oklahoma 3 1 11 30
40 001 9009 Oklahoma Adair 1 1 12 31
40 143 1127 Oklahoma Tulsa 1 1 12 31
41 Oregon 5 1 9 30
41 051 0080 Oregon Multnomah 1 1 12 31
42 Pennsylvania 3 1 10 31
42 003 0008 Pennsylvania Allegheny 1 1 12 31
42 101 0048 Pennsylvania Philadelphia 1 1 12 31
44 Rhode Island 3 1 9 30
44 007 1010 Rhode Island Providence 1 1 12 31
45 South Carolina 3 1 10 31
45 079 0007 South Carolina Richland 1 1 12 31
46 South Dakota 3 1 10 31
46 099 0008 South Dakota Minnehaha 1 1 12 31
46 099 0009 South Dakota Minnehaha 1 1 12 31
47 Tennessee 3 1 10 31
47 009 0101 Tennessee Blount 1 1 12 31
47 155 0102 Tennessee Sevier 5 1 10 31
47 157 0075 Tennessee Shelby 1 1 12 31
48 Texas 1 1 12 31
48 001 Texas Anderson 3 1 11 30
48 003 Texas Andrews 3 1 11 30
48 005 Texas Angelina 1 1 12 31
48 007 Texas Aransas 1 1 12 31
48 009 Texas Archer 3 1 11 30
48 011 Texas Armstrong 3 1 11 30
48 013 Texas Atascosa 3 1 11 30
48 015 Texas Austin 1 1 12 31
48 017 Texas Bailey 3 1 11 30
48 019 Texas Bandera 3 1 11 30
48 021 Texas Bastrop 3 1 11 30
48 023 Texas Baylor 3 1 11 30
48 025 Texas Bee 1 1 12 31
48 027 Texas Bell 3 1 11 30
48 029 Texas Bexar 3 1 11 30
48 031 Texas Blanco 3 1 11 30
48 033 Texas Borden 3 1 11 30
48 035 Texas Bosque 3 1 11 30
48 037 Texas Bowie 3 1 11 30
48 039 Texas Brazoria 1 1 12 31
48 041 Texas Brazos 3 1 11 30
48 043 Texas Brewster 1 1 12 31
48 045 Texas Briscoe 3 1 11 30
48 047 Texas Brooks 1 1 12 31
48 049 Texas Brown 3 1 11 30
48 051 Texas Burleson 3 1 11 30
48 053 Texas Burnet 3 1 11 30
48 055 Texas Caldwell 3 1 11 30
48 057 Texas Calhoun 1 1 12 31
48 059 Texas Callahan 3 1 11 30
48 061 Texas Cameron 1 1 12 31
48 063 Texas Camp 3 1 11 30
48 065 Texas Carson 3 1 11 30
48 067 Texas Cass 3 1 11 30
48 069 Texas Castro 3 1 11 30
48 071 Texas Chambers 1 1 12 31
48 073 Texas Cherokee 3 1 11 30
48 075 Texas Childress 3 1 11 30
48 077 Texas Clay 3 1 11 30
48 079 Texas Cochran 3 1 11 30
48 081 Texas Coke 3 1 11 30
48 083 Texas Coleman 3 1 11 30
48 085 Texas Collin 3 1 11 30
48 087 Texas Collingsworth 3 1 11 30
48 089 Texas Colorado 1 1 12 31
48 091 Texas Comal 3 1 11 30
48 093 Texas Comanche 3 1 11 30
48 095 Texas Concho 3 1 11 30
48 097 Texas Cooke 3 1 11 30
48 099 Texas Coryell 3 1 11 30
48 101 Texas Cottle 3 1 11 30
48 103 Texas Crane 3 1 11 30
48 105 Texas Crockett 3 1 11 30
48 107 Texas Crosby 3 1 11 30
48 109 Texas Culberson 1 1 12 31
48 111 Texas Dallam 3 1 11 30
48 113 Texas Dallas 3 1 11 30
48 113 0069 Texas Dallas 1 1 12 31
48 115 Texas Dawson 3 1 11 30
48 117 Texas Deaf Smith 3 1 11 30
48 119 Texas Delta 3 1 11 30
48 121 Texas Denton 3 1 11 30
48 123 Texas DeWitt 1 1 12 31
48 125 Texas Dickens 3 1 11 30
48 127 Texas Dimmit 3 1 11 30
48 129 Texas Donley 3 1 11 30
48 131 Texas Duval 1 1 12 31
48 133 Texas Eastland 3 1 11 30
48 135 Texas Ector 3 1 11 30
48 137 Texas Edwards 3 1 11 30
48 139 Texas Ellis 3 1 11 30
48 141 Texas El Paso 1 1 12 31
48 141 0044 Texas El Paso 1 1 12 31
48 143 Texas Erath 3 1 11 30
48 145 Texas Falls 3 1 11 30
48 147 Texas Fannin 3 1 11 30
48 149 Texas Fayette 3 1 11 30
48 151 Texas Fisher 3 1 11 30
48 153 Texas Floyd 3 1 11 30
48 155 Texas Foard 3 1 11 30
48 157 Texas Fort Bend 1 1 12 31
48 159 Texas Franklin 3 1 11 30
48 161 Texas Freestone 3 1 11 30
48 163 Texas Frio 3 1 11 30
48 165 Texas Gaines 3 1 11 30
48 167 Texas Galveston 1 1 12 31
48 169 Texas Garza 3 1 11 30
48 171 Texas Gillespie 3 1 11 30
48 173 Texas Glasscock 3 1 11 30
48 175 Texas Goliad 1 1 12 31
48 177 Texas Gonzales 3 1 11 30
48 179 Texas Gray 3 1 11 30
48 181 Texas Grayson 3 1 11 30
48 183 Texas Gregg 3 1 11 30
48 185 Texas Grimes 3 1 11 30
48 187 Texas Guadalupe 3 1 11 30
48 189 Texas Hale 3 1 11 30
48 191 Texas Hall 3 1 11 30
48 193 Texas Hamilton 3 1 11 30
48 195 Texas Hansford 3 1 11 30
48 197 Texas Hardeman 3 1 11 30
48 199 Texas Hardin 1 1 12 31
48 201 Texas Harris 1 1 12 31
48 201 1039 Texas Harris 1 1 12 31
48 203 Texas Harrison 3 1 11 30
48 205 Texas Hartley 3 1 11 30
48 207 Texas Haskell 3 1 11 30
48 209 Texas Hays 3 1 11 30
48 211 Texas Hemphill 3 1 11 30
48 213 Texas Henderson 3 1 11 30
48 215 Texas Hidalgo 1 1 12 31
48 217 Texas Hill 3 1 11 30
48 219 Texas Hockley 3 1 11 30
48 221 Texas Hood 3 1 11 30
48 223 Texas Hopkins 3 1 11 30
48 225 Texas Houston 1 1 12 31
48 227 Texas Howard 3 1 11 30
48 229 Texas Hudspeth 1 1 12 31
48 231 Texas Hunt 3 1 11 30
48 233 Texas Hutchinson 3 1 11 30
48 235 Texas Irion 3 1 11 30
48 237 Texas Jack 3 1 11 30
48 239 Texas Jackson 1 1 12 31
48 241 Texas Jasper 1 1 12 31
48 243 Texas Jeff Davis 1 1 12 31
48 245 Texas Jefferson 1 1 12 31
48 247 Texas Jim Hogg 1 1 12 31
48 249 Texas Jim Wells 1 1 12 31
48 251 Texas Johnson 3 1 11 30
48 253 Texas Jones 3 1 11 30
48 255 Texas Karnes 3 1 11 30
48 257 Texas Kaufman 3 1 11 30
48 259 Texas Kendall 3 1 11 30
48 261 Texas Kenedy 1 1 12 31
48 263 Texas Kent 3 1 11 30
48 265 Texas Kerr 3 1 11 30
48 267 Texas Kimble 3 1 11 30
48 269 Texas King 3 1 11 30
48 271 Texas Kinney 3 1 11 30
48 273 Texas Kleberg 1 1 12 31
48 275 Texas Knox 3 1 11 30
48 277 Texas Lamar 3 1 11 30
48 279 Texas Lamb 3 1 11 30
48 281 Texas Lampasas 3 1 11 30
48 283 Texas La Salle 3 1 11 30
48 285 Texas Lavaca 1 1 12 31
48 287 Texas Lee 3 1 11 30
48 289 Texas Leon 3 1 11 30
48 291 Texas Liberty 1 1 12 31
48 293 Texas Limestone 3 1 11 30
48 295 Texas Lipscomb 3 1 11 30
48 297 Texas Live Oak 1 1 12 31
48 299 Texas Llano 3 1 11 30
48 301 Texas Loving 3 1 11 30
48 303 Texas Lubbock 3 1 11 30
48 305 Texas Lynn 3 1 11 30
48 307 Texas McCulloch 3 1 11 30
48 309 Texas McLennan 3 1 11 30
48 311 Texas McMullen 1 1 12 31
48 313 Texas Madison 3 1 11 30
48 315 Texas Marion 3 1 11 30
48 317 Texas Martin 3 1 11 30
48 319 Texas Mason 3 1 11 30
48 321 Texas Matagorda 1 1 12 31
48 323 Texas Maverick 3 1 11 30
48 325 Texas Medina 3 1 11 30
48 327 Texas Menard 3 1 11 30
48 329 Texas Midland 3 1 11 30
48 331 Texas Milam 3 1 11 30
48 333 Texas Mills 3 1 11 30
48 335 Texas Mitchell 3 1 11 30
48 337 Texas Montague 3 1 11 30
48 339 Texas Montgomery 1 1 12 31
48 341 Texas Moore 3 1 11 30
48 343 Texas Morris 3 1 11 30
48 345 Texas Motley 3 1 11 30
48 347 Texas Nacogdoches 1 1 12 31
48 349 Texas Navarro 3 1 11 30
48 351 Texas Newton 1 1 12 31
48 353 Texas Nolan 3 1 11 30
48 355 Texas Nueces 1 1 12 31
48 357 Texas Ochiltree 3 1 11 30
48 359 Texas Oldham 3 1 11 30
48 361 Texas Orange 1 1 12 31
48 363 Texas Palo Pinto 3 1 11 30
48 365 Texas Panola 3 1 11 30
48 367 Texas Parker 3 1 11 30
48 369 Texas Parmer 3 1 11 30
48 371 Texas Pecos 3 1 11 30
48 373 Texas Polk 1 1 12 31
48 375 Texas Potter 3 1 11 30
48 377 Texas Presidio 1 1 12 31
48 379 Texas Rains 3 1 11 30
48 381 Texas Randall 3 1 11 30
48 383 Texas Reagan 3 1 11 30
48 385 Texas Real 3 1 11 30
48 387 Texas Red River 3 1 11 30
48 389 Texas Reeves 3 1 11 30
48 391 Texas Refugio 1 1 12 31
48 393 Texas Roberts 3 1 11 30
48 395 Texas Robertson 3 1 11 30
48 397 Texas Rockwall 3 1 11 30
48 399 Texas Runnels 3 1 11 30
48 401 Texas Rusk 3 1 11 30
48 403 Texas Sabine 1 1 12 31
48 405 Texas San Augustine 1 1 12 31
48 407 Texas San Jacinto 1 1 12 31
48 409 Texas San Patricio 1 1 12 31
48 411 Texas San Saba 3 1 11 30
48 413 Texas Schleicher 3 1 11 30
48 415 Texas Scurry 3 1 11 30
48 417 Texas Shackelford 3 1 11 30
48 419 Texas Shelby 1 1 12 31
48 421 Texas Sherman 3 1 11 30
48 423 Texas Smith 3 1 11 30
48 425 Texas Somervell 3 1 11 30
48 427 Texas Starr 1 1 12 31
48 429 Texas Stephens 3 1 11 30
48 431 Texas Sterling 3 1 11 30
48 433 Texas Stonewall 3 1 11 30
48 435 Texas Sutton 3 1 11 30
48 437 Texas Swisher 3 1 11 30
48 439 Texas Tarrant 3 1 11 30
48 441 Texas Taylor 3 1 11 30
48 443 Texas Terrell 3 1 11 30
48 445 Texas Terry 3 1 11 30
48 447 Texas Throckmorton 3 1 11 30
48 449 Texas Titus 3 1 11 30
48 451 Texas Tom Green 3 1 11 30
48 453 Texas Travis 3 1 11 30
48 455 Texas Trinity 1 1 12 31
48 457 Texas Tyler 1 1 12 31
48 459 Texas Upshur 3 1 11 30
48 461 Texas Upton 3 1 11 30
48 463 Texas Uvalde 3 1 11 30
48 465 Texas Val Verde 3 1 11 30
48 467 Texas Van Zandt 3 1 11 30
48 469 Texas Victoria 1 1 12 31
48 471 Texas Walker 1 1 12 31
48 473 Texas Waller 1 1 12 31
48 475 Texas Ward 3 1 11 30
48 477 Texas Washington 3 1 11 30
48 479 Texas Webb 1 1 12 31
48 481 Texas Wharton 1 1 12 31
48 483 Texas Wheeler 3 1 11 30
48 485 Texas Wichita 3 1 11 30
48 487 Texas Wilbarger 3 1 11 30
48 489 Texas Willacy 1 1 12 31
48 491 Texas Williamson 3 1 11 30
48 493 Texas Wilson 3 1 11 30
48 495 Texas Winkler 3 1 11 30
48 497 Texas Wise 3 1 11 30
48 499 Texas Wood 3 1 11 30
48 501 Texas Yoakum 3 1 11 30
48 503 Texas Young 3 1 11 30
48 505 Texas Zapata 1 1 12 31
48 507 Texas Zavala 3 1 11 30
49 Utah 1 1 12 31
49 035 3006 Utah Salt Lake 1 1 12 31
50 Vermont 4 1 9 30
50 007 0007 Vermont Chittenden 1 1 12 31
51 Virginia 3 1 10 31
51 087 0014 Virginia Henrico 1 1 12 31
53 Washington 5 1 9 30
53 009 0013 Washington Clallam 1 1 12 31
53 033 0080 Washington King 1 1 12 31
54 West Virginia 3 1 10 31
54 039 0020 West Virginia Kanawha 1 1 12 31
55 Wisconsin 4 1 10 15
55 003 0010 Wisconsin Ashland 1 1 12 31
55 027 0001 Wisconsin Dodge 1 1 12 31
55 041 0007 Wisconsin Forest 1 1 12 31
55 059 0019 Wisconsin Kenosha 3 1 10 31
55 059 0025 Wisconsin Kenosha 3 1 10 31
55 079 0026 Wisconsin Milwaukee 1 1 12 31
55 127 0006 Wisconsin Walworth 4 1 10 15
56 Wyoming 1 1 9 30
56 021 0100 Wyoming Laramie 1 1 12 31
60 American Samoa 1 1 12 31
66 Guam 1 1 12 31
72 Puerto Rico 1 1 12 31
72 021 0010 Puerto Rico Bayamon 1 1 12 31
78 Virgin Islands 1 1 12 31
80 Country Of Mexico 1 1 12 31
CC Canada 1 1 12 31