Trend: Environmental Protection Agency (2024-08-13). Count of Days by Harmful Criteria Air Pollutant Gases and Particulates - Annual Summary Data: Ground-Level Ozone | Abbeville, SC, Ada, ID, Adair, OK, Adams, CO, Adams, IL, Adams, MS, Adams, NE, Adams, OH, Adams, PA, Adams, WA, Addison, VT, Adjuntas, PR, Aiken, SC, Alachua, FL, Alamance, NC, Alameda, CA, Alamosa, CO, Albany, NY, Albany, WY, Albemarle, VA, Alcorn, MS, Aleutians East, AK, Alexander, NC, Alexandria City, VA, Allegan, MI, Allegany, MD, Allegheny, PA, Allen, IN, Allen, OH, Alpena, MI, Alpine, CA, Amador, CA, Amherst, VA, Anchorage, AK, Anderson, SC, Anderson, TN, Andrew, MO, Androscoggin, ME, Anne Arundel, MD, Anoka, MN, Apache, AZ, Arapahoe, CO, Archuleta, CO, Arkansas, AR, Arlington, VA, Armstrong, PA, Aroostook, ME, Ascension, LA, Ashland, WI, Ashley, AR, Ashtabula, OH, Asotin, WA, Atascosa, TX, Atchison, MO, Athens, OH, Atlantic, NJ, Audrain, MO, Augusta, VA, Autauga, AL, Avery, NC, Baker, FL, Baker, OR, Baldwin, AL, Baltimore, MD, Bannock, ID, Barbour, AL, Barceloneta, PR, Barnstable, MA, Barnwell, SC, Barron, WI, Bartholomew, IN, Bay, FL, Bay, MI, Bayamon, PR, Beaufort, NC, Beaufort, SC, Beauregard, LA, Beaver, PA, Beaverhead, MT, Becker, MN, Belknap, NH, Bell, KY, Bell, TX, Belmont, OH, Beltrami, MN, Benewah, ID, Bennington, VT, Benton, AR, Benton, OR, Benton, TN, Benton, WA, Benzie, MI, Bergen, NJ, Berkeley, SC, Berkeley, WV, Berks, PA, Berkshire, MA, Bernalillo, NM, Berrien, MI, Bethel, AK, Bexar, TX, Bibb, GA, Big Horn, MT, Big Horn, WY, Billings, ND, Bingham, ID, Black Hawk, IA, Blaine, ID, Blaine, MT, Blair, PA, Blount, TN, Blue Earth, MN, Boise, ID, Bolivar, MS, Bonner, ID, Bonneville, ID, Boone, AR, Boone, IN, Boone, KY, Boone, MO, Bossier, LA, Boulder, CO, Boundary, ID, Bowie, TX, Box Elder, UT, Boyd, KY, Boyle, KY, Bradford, PA, Bradley, TN, Brazoria, TX, Brazos, TX, Bremer, IA, Brevard, FL, Brewster, TX, Bristol, MA, Broadwater, MT, Bronx, NY, Brooke, WV, Brookings, SD, Broome, NY, Broward, FL, Brown, IN, Brown, KS, Brown, SD, Brown, WI, Brunswick, NC, Bryan, OK, Buchanan, MO, Buchanan, VA, Bucks, PA, Buffalo, NE, Buffalo, WI, Bullitt, KY, Buncombe, NC, Burke, NC, Burke, ND, Burleigh, ND, Burlington, NJ, Butler, OH, Butler, PA, Butte, CA, Butte, ID, Cabarrus, NC, Cabell, WV, Cache, UT, Caddo, LA, Caddo, OK, Caguas, PR, Calaveras, CA, Calcasieu, LA, Caldwell, NC, Caldwell, TX, Calhoun, AL, Calhoun, MI, Callaway, MO, Calloway, KY, Calvert, MD, Cambria, PA, Camden, NC, Camden, NJ, Cameron, TX, Campbell, KY, Campbell, SD, Campbell, VA, Campbell, WY, Canadian, OK, Canyon, ID, Cape May, NJ, Carbon, UT, Carbon, WY, Caribou, ID, Carlton, MN, Carolina, PR, Caroline, VA, Carroll, IN, Carroll, MD, Carroll, NH, Carroll, VA, Carson City, NV, Carson, TX, Carter, KY, Carter, OK, Carteret, NC, Cascade, MT, Cass, MI, Cass, MN, Cass, MO, Cass, ND, Cass, NE, Cassia, ID, Caswell, NC, Catano, PR, Catawba, NC, Catron, NM, Cecil, MD, Cedar, MO, Cedar, NE, Centre, PA, Cerro Gordo, IA, Chaffee, CO, Chambers, TX, Champaign, IL, Charles, MD, Charleston, SC, Charlottesville City, VA, Charlton, GA, Chase, KS, Chatham, GA, Chatham, NC, Chattooga, GA, Chautauqua, NY, Chaves, NM, Cheboygan, MI, Chelan, WA, Chemung, NY, Cherokee, GA, Cherokee, OK, Cherokee, SC, Cherry, NE, Chesapeake City, VA, Cheshire, NH, Chester, PA, Chester, SC, Chesterfield, SC, Chesterfield, VA, Chippewa, MI, Chippewa, WI, Chittenden, VT, Choctaw, MS, Choctaw, OK, Christian, KY, Christian, MO, Churchill, NV, Cibola, NM, Citrus, FL, Clackamas, OR, Claiborne, TN, Clallam, WA, Clark, AR, Clark, IL, Clark, IN, Clark, KY, Clark, NV, Clark, OH, Clark, WA, Clarke, GA, Clay, AL, Clay, KY, Clay, MN, Clay, MO, Clay, SD, Clayton, GA, Clear Creek, CO, Clearfield, PA, Clearwater, ID, Clermont, OH, Cleveland, OK, Clinton, IA, Clinton, MI, Clinton, MO, Clinton, OH, Cloud, KS, Coahoma, MS, Cobb, GA, Cochise, AZ, Coconino, AZ, Codington, SD, Coffee, GA, Coffee, TN, Colbert, AL, Cole, MO, Coles, IL, Colleton, SC, Collier, FL, Collin, TX, Columbia, FL, Columbia, GA, Columbia, NY, Columbia, OR, Columbia, WA, Columbia, WI, Columbiana, OH, Colusa, CA, Comal, TX, Comanche, OK, Concordia, LA, Contra Costa, CA, Converse, WY, Cook, IL, Cook, MN, Cooper, MO, Coos, NH, Coos, OR, Cotton, OK, Covington City, VA, Coweta, GA, Cowlitz, WA, Craighead, AR, Crawford, IL, Crawford, OH, Creek, OK, Crittenden, AR, Crook, OR, Crook, WY, Crow Wing, MN, Culberson, TX, Cullman, AL, Culpeper, VA, Cumberland, ME, Cumberland, NC, Cumberland, NJ, Cumberland, PA, Custer, ID, Custer, MT, Custer, NE, Custer, OK, Custer, SD, Cuyahoga, OH, Daggett, UT, Dakota, MN, Dakota, NE, Dallas, TX, Dane, WI, Darlington, SC, Dauphin, PA, Davidson, NC, Davidson, TN, Davie, NC, Daviess, IN, Daviess, KY, Davis, UT, Dawson, GA, Dawson, NE, Dearborn, IN, Deer Lodge, MT, Dekalb, GA, Dekalb, TN, Del Norte, CA, Delaware, IA, Delaware, IN, Delaware, OH, Delaware, PA, Delta, CO, Delta, MI, Denali, AK, Denton, TX, Denver, CO, Deschutes, OR, Desoto, MS, Deuel, NE, Dewey, OK, Dickinson, MI, Dickson, TN, Dodge, WI, Dona Ana, NM, Door, WI, Dorchester, MD, Dougherty, GA, Douglas, CO, Douglas, GA, Douglas, KS, Douglas, MN, Douglas, NE, Douglas, NV, Douglas, OR, Douglas, WI, Dubois, IN, Dubuque, IA, Duchesne, UT, Dukes, MA, Dunn, ND, Dunn, WI, Dupage, IL, Duplin, NC, Durham, NC, Dutchess, NY, Duval, FL, Dyer, TN, Eagle, CO, East Baton Rouge, LA, Eau Claire, WI, Ector, TX, Eddy, NM, Edgecombe, NC, Edgefield, SC, Edmonson, KY, Effingham, IL, El Dorado, CA, El Paso, CO, El Paso, TX, Elbert, CO, Elbert, GA, Elk, PA, Elkhart, IN, Elko, NV, Ellis, OK, Ellis, TX, Elmore, AL, Elmore, ID, Emery, UT, Emmet, IA, Emmet, MI, Erie, NY, Erie, OH, Erie, PA, Escambia, AL, Escambia, FL, Essex, MA, Essex, NJ, Essex, NY, Etowah, AL, Fairbanks North Star, AK, Fairfax City, VA, Fairfax, VA, Fairfield, CT, Fairfield, SC, Fajardo, PR, Falls Church City, VA, Fannin, GA, Faulkner, AR, Fauquier, VA, Fayette, GA, Fayette, KY, Fayette, OH, Fayette, PA, Fayette, TN, Fayette, TX, Fayette, WV, Fergus, MT, Flagler, FL, Flathead, MT, Florence, SC, Florence, WI, Florida, PR, Floyd, GA, Floyd, IN, Floyd, KY, Fond Du Lac, WI, Ford, KS, Forest, WI, Forrest, MS, Forsyth, NC, Fort Bend, TX, Franklin, AL, Franklin, ID, Franklin, KY, Franklin, MA, Franklin, ME, Franklin, MS, Franklin, NC, Franklin, NY, Franklin, OH, Franklin, PA, Franklin, WA, Frederick, MD, Frederick, VA, Fredericksburg City, VA, Freeborn, MN, Fremont, CO, Fremont, WY, Fresno, CA, Fulton, GA, Fulton, KY, Gage, NE, Gallatin, MT, Gallia, OH, Galveston, TX, Garden, NE, Garfield, CO, Garfield, OK, Garfield, UT, Garfield, WA, Garland, AR, Garrett, MD, Gaston, NC, Geauga, OH, Gem, ID, Genesee, MI, Geneva, AL, Georgetown, SC, Gibson, IN, Gila, AZ, Giles, TN, Giles, VA, Gillespie, TX, Gilmer, WV, Gilpin, CO, Glacier, MT, Glenn, CA, Gloucester, NJ, Glynn, GA, Goodhue, MN, Goshen, WY, Grady, OK, Grafton, NH, Graham, AZ, Graham, NC, Grand Forks, ND, Grand Traverse, MI, Grand, CO, Grand, UT, Grant, LA, Grant, NM, Grant, OK, Grant, OR, Grant, WA, Grant, WI, Granville, NC, Gratiot, MI, Graves, KY, Grays Harbor, WA, Greeley, KS, Green, WI, Greenbrier, WV, Greene, IN, Greene, MO, Greene, NY, Greene, OH, Greene, PA, Greene, TN, Greenlee, AZ, Greenup, KY, Greenville, SC, Greenwood, SC, Gregg, TX, Grenada, MS, Guam, GU, Guayama, PR, Guayanilla, PR, Guaynabo, PR, Guilford, NC, Gulf, FL, Gunnison, CO, Gwinnett, GA, Halifax, NC, Hall, GA, Hall, NE, Hamblen, TN, Hamilton, FL, Hamilton, IL, Hamilton, IN, Hamilton, NY, Hamilton, OH, Hamilton, TN, Hampden, MA, Hampshire, MA, Hampton City, VA, Hancock, IN, Hancock, KY, Hancock, ME, Hancock, MS, Hancock, OH, Hancock, WV, Hanover, VA, Hardin, KY, Hardin, TX, Harford, MD, Harlan, KY, Harnett, NC, Harney, OR, Harris, TX, Harrison, IA, Harrison, MS, Harrison, OH, Harrison, TX, Harrison, WV, Hartford, CT, Hawaii, HI, Hays, TX, Haywood, NC, Haywood, TN, Henderson, KY, Henderson, NC, Hendricks, IN, Hennepin, MN, Henrico, VA, Henry, GA, Henry, IN, Henry, KY, Henry, TN, Henry, VA, Herkimer, NY, Hidalgo, NM, Hidalgo, TX, Highlands, FL, Hill, MT, Hillsborough, FL, Hillsborough, NH, Hinds, MS, Hocking, OH, Holmes, FL, Honolulu, HI, Hood, TX, Hopewell City, VA, Hopkins, KY, Horry, SC, Houghton, MI, Houston, AL, Houston, GA, Howard, IN, Howard, MD, Howell, MO, Hubbard, MN, Hudson, NJ, Hughes, SD, Humacao, PR, Humboldt, CA, Humphreys, TN, Hunt, TX, Hunterdon, NJ, Huntington, IN, Huron, MI, Huron, OH, Hutchinson, TX, Hyde, NC, Iberville, LA, Idaho, ID, Imperial, CA, Indian River, FL, Indiana, PA, Ingham, MI, Inyo, CA, Iron, MI, Iron, UT, Isle Of Wight, VA, Itasca, MN, Jackson, AL, Jackson, AR, Jackson, CO, Jackson, IL, Jackson, IN, Jackson, LA, Jackson, MO, Jackson, MS, Jackson, NC, Jackson, OH, Jackson, OR, Jackson, SD, Jackson, WI, Jasper, IN, Jasper, MO, Jeff Davis, TX, Jefferson, AL, Jefferson, AR, Jefferson, CO, Jefferson, IN, Jefferson, KS, Jefferson, KY, Jefferson, LA, Jefferson, MO, Jefferson, MT, Jefferson, NY, Jefferson, OH, Jefferson, OK, Jefferson, OR, Jefferson, TN, Jefferson, TX, Jefferson, WA, Jefferson, WI, Jerome, ID, Jersey, IL, Jessamine, KY, Jo Daviess, IL, Johnson, IA, Johnson, IN, Johnson, KS, Johnson, TX, Johnson, WY, Johnston, NC, Johnston, OK, Jones, MS, Jones, NC, Josephine, OR, Juncos, PR, Juneau, AK, Kalamazoo, MI, Kanawha, WV, Kandiyohi, MN, Kane, IL, Kankakee, IL, Karnes, TX, Kauai, HI, Kaufman, TX, Kay, OK, Kearny, KS, Kenai Peninsula, AK, Kennebec, ME, Kenosha, WI, Kent, DE, Kent, MD, Kent, MI, Kent, RI, Kenton, KY, Kern, CA, Ketchikan Gateway, AK, Kewaunee, WI, Keweenaw, MI, King William, VA, King, WA, Kings, CA, Kings, NY, Kiowa, OK, Kitsap, WA, Kittitas, WA, Klamath, OR, Kleberg, TX, Klickitat, WA, Knox, IN, Knox, ME, Knox, NE, Knox, OH, Knox, TN, Koochiching, MN, Kootenai, ID, Kosciusko, IN, La Crosse, WI, La Paz, AZ, La Plata, CO, La Salle, IL, Lackawanna, PA, Lafayette, LA, Lafourche, LA, Lake, CA, Lake, FL, Lake, IL, Lake, IN, Lake, MN, Lake, MT, Lake, OH, Lake, OR, Lamar, MS, Lancaster, NE, Lancaster, PA, Lander, NV, Lane, OR, Laramie, WY, Lares, PR, Larimer, CO, Larue, KY, Lassen, CA, Latah, ID, Latimer, OK, Lauderdale, MS, Laurel, KY, Lawrence, AL, Lawrence, IN, Lawrence, KY, Lawrence, OH, Lawrence, PA, Lawrence, TN, Le Flore, OK, Lea, NM, Leavenworth, KS, Lebanon, PA, Lee, FL, Lee, IA, Lee, MS, Lee, NC, Leelanau, MI, Lehigh, PA, Lemhi, ID, Lenawee, MI, Lenoir, NC, Leon, FL, Lewis And Clark, MT, Lewis, ID, Lewis, WA, Lexington, SC, Liberty, FL, Liberty, TX, Licking, OH, Limestone, AL, Lincoln, CO, Lincoln, ME, Lincoln, MO, Lincoln, MT, Lincoln, NC, Lincoln, NE, Lincoln, NM, Lincoln, OK, Lincoln, OR, Lincoln, WY, Linn, IA, Linn, KS, Linn, OR, Litchfield, CT, Livingston, IL, Livingston, KY, Livingston, LA, Logan, CO, Logan, IL, Logan, KY, Logan, OH, Lorain, OH, Los Alamos, NM, Los Angeles, CA, Loudon, TN, Loudoun, VA, Love, OK, Lowndes, GA, Lowndes, MS, Lubbock, TX, Lucas, OH, Luna, NM, Luzerne, PA, Lycoming, PA, Lynchburg City, VA, Lyon, MN, Lyon, NV, Macomb, MI, Macon, IL, Macon, NC, Macoupin, IL, Madera, CA, Madison, AL, Madison, IA, Madison, ID, Madison, IL, Madison, IN, Madison, KY, Madison, MO, Madison, MS, Madison, MT, Madison, NY, Madison, OH, Madison, TN, Madison, VA, Mahoning, OH, Manatee, FL, Manati, PR, Manistee, MI, Manitowoc, WI, Marathon, WI, Marengo, AL, Maricopa, AZ, Maries, MO, Marin, CA, Marion, AR, Marion, FL, Marion, IN, Marion, MO, Marion, OR, Marion, TX, Marion, WV, Mariposa, CA, Marquette, MI, Marshall, KY, Marshall, MS, Marshall, OK, Marshall, TN, Marshall, WV, Martin, FL, Martin, NC, Martinsville City, VA, Mason, KY, Mason, MI, Mason, WA, Maui, HI, Maury, TN, Maverick, TX, Mayes, OK, Mcclain, OK, Mccone, MT, Mccracken, KY, Mccurtain, OK, Mcdowell, NC, Mchenry, IL, Mcintosh, GA, Mckenzie, ND, Mckinley, NM, Mclean, IL, Mclean, KY, Mclean, ND, Mclennan, TX, Mcleod, MN, Mcminn, TN, Meade, SD, Mecklenburg, NC, Mecosta, MI, Medina, OH, Meigs, TN, Mendocino, CA, Merced, CA, Mercer, KY, Mercer, MO, Mercer, ND, Mercer, NJ, Mercer, OH, Mercer, PA, Mercer, WV, Merrimack, NH, Mesa, CO, Metcalfe, KY, Miami, KS, Miami, OH, Miami-Dade, FL, Middlesex, CT, Middlesex, MA, Middlesex, NJ, Midland, MI, Mille Lacs, MN, Miller, AR, Milwaukee, WI, Mineral, NV, Minidoka, ID, Minnehaha, SD, Missaukee, MI, Mississippi, AR, Missoula, MT, Mitchell, NC, Mobile, AL, Modoc, CA, Moffat, CO, Mohave, AZ, Monmouth, NJ, Mono, CA, Monongalia, WV, Monroe, AL, Monroe, FL, Monroe, IL, Monroe, IN, Monroe, MI, Monroe, MO, Monroe, NY, Monroe, OH, Monroe, PA, Monroe, WI, Montcalm, MI, Monterey, CA, Montezuma, CO, Montgomery, AL, Montgomery, AR, Montgomery, IA, Montgomery, IN, Montgomery, KS, Montgomery, MD, Montgomery, NC, Montgomery, OH, Montgomery, PA, Montgomery, TN, Montgomery, TX, Montmorency, MI, Montrose, CO, Moore, TN, Morgan, AL, Morgan, CO, Morgan, IN, Morgan, KY, Morris, NJ, Morrison, MN, Morton, KS, Muhlenberg, KY, Multnomah, OR, Murray, GA, Muscatine, IA, Muscogee, GA, Muskegon, MI, Muskogee, OK, Musselshell, MT, Napa, CA, Nash, NC, Nassau, FL, Nassau, NY, Natrona, WY, Navajo, AZ, Navarro, TX, Nemaha, NE, Neosho, KS, Nevada, CA, New Castle, DE, New Hanover, NC, New Haven, CT, New London, CT, New York, NY, Newport News City, VA, Newton, AR, Nez Perce, ID, Niagara, NY, Nicollet, MN, Noble, OH, Norfolk City, VA, Norfolk, MA, North Slope, AK, Northampton, NC, Northampton, PA, Northampton, VA, Northumberland, VA, Northwest Arctic, AK, Nowata, OK, Nueces, TX, Nye, NV, Oakland, MI, Obion, TN, Ocean, NJ, Oceana, MI, Oconee, SC, Oconto, WI, Ohio, KY, Ohio, WV, Okaloosa, FL, Okanogan, WA, Oklahoma, OK, Okmulgee, OK, Oldham, KY, Oliver, ND, Olmsted, MN, Oneida, NY, Oneida, WI, Onondaga, NY, Onslow, NC, Ontonagon, MI, Orange, CA, Orange, FL, Orange, NC, Orange, NY, Orange, TX, Orangeburg, SC, Orleans, LA, Osage, OK, Osceola, FL, Osceola, MI, Oscoda, MI, Oswego, NY, Otero, NM, Otoe, NE, Ottawa, MI, Ottawa, OH, Ottawa, OK, Otter Tail, MN, Ouachita, AR, Ouachita, LA, Outagamie, WI, Oxford, ME, Ozaukee, WI, Page, VA, Palm Beach, FL, Palo Alto, IA, Panola, MS, Park, CO, Park, MT, Park, WY, Parker, TX, Pasco, FL, Pasquotank, NC, Passaic, NJ, Paulding, GA, Pawnee, KS, Pawnee, OK, Payne, OK, Pearl River, MS, Pend Oreille, WA, Pendleton, KY, Pennington, SD, Penobscot, ME, Peoria, IL, Perkins, SD, Perry, IN, Perry, KY, Perry, MO, Perry, PA, Pershing, NV, Person, NC, Philadelphia, PA, Phillips, AR, Phillips, MT, Pickaway, OH, Pickens, SC, Pierce, WA, Pike, AL, Pike, GA, Pike, KY, Pima, AZ, Pinal, AZ, Pine, MN, Pinellas, FL, Pipestone, MN, Piscataquis, ME, Pitkin, CO, Pitt, NC, Pittsburg, OK, Pittsylvania, VA, Placer, CA, Plaquemines, LA, Platte, MO, Platte, WY, Plumas, CA, Plymouth, MA, Pointe Coupee, LA, Polk, AR, Polk, FL, Polk, IA, Polk, TX, Polk, WI, Ponce, PR, Pontotoc, OK, Pope, AR, Portage, OH, Porter, IN, Portsmouth City, VA, Posey, IN, Pottawatomie, OK, Pottawattamie, IA, Potter, TX, Powder River, MT, Powell, MT, Power, ID, Preble, OH, Presque Isle, MI, Price, WI, Prince Edward, VA, Prince William, VA, Providence, RI, Prowers, CO, Pueblo, CO, Pulaski, AR, Pulaski, KY, Putnam, FL, Putnam, IN, Putnam, NY, Putnam, TN, Putnam, WV, Queens, NY, Racine, WI, Raleigh, WV, Ramsey, MN, Randall, TX, Randolph, IL, Randolph, NC, Rankin, MS, Rapides, LA, Ravalli, MT, Rensselaer, NY, Richland, MT, Richland, OH, Richland, SC, Richmond City, VA, Richmond, GA, Richmond, NY, Riley, KS, Rio Arriba, NM, Rio Blanco, CO, Rio Grande, PR, Riverside, CA, Roane, TN, Roanoke City, VA, Roanoke, VA, Roberts, SD, Robeson, NC, Rock Island, IL, Rock, MN, Rock, WI, Rockbridge, VA, Rockdale, GA, Rockingham, NC, Rockingham, NH, Rockingham, VA, Rockland, NY, Rockwall, TX, Roosevelt, MT, Roscommon, MI, Roseau, MN, Rosebud, MT, Routt, CO, Rowan, NC, Rusk, WI, Russell, AL, Rutherford, TN, Rutland, VT, Sacramento, CA, Sagadahoc, ME, Saginaw, MI, Saint Charles, MO, Saint Clair, IL, Saint Louis, MN, Saint Louis, MO, Sainte Genevieve, MO, Salem, NJ, Salinas, PR, Salt Lake, UT, San Benito, CA, San Bernardino, CA, San Diego, CA, San Francisco, CA, San Joaquin, CA, San Juan, CO, San Juan, NM, San Juan, PR, San Juan, UT, San Juan, WA, San Luis Obispo, CA, San Mateo, CA, San Miguel, CO, San Patricio, TX, Sanders, MT, Sandoval, NM, Sandusky, OH, Sangamon, IL, Sanilac, MI, Santa Barbara, CA, Santa Clara, CA, Santa Cruz, AZ, Santa Cruz, CA, Santa Fe, NM, Santa Rosa, FL, Sarasota, FL, Saratoga, NY, Sarpy, NE, Sauk, WI, Schenectady, NY, Schoolcraft, MI, Schuylkill, PA, Scioto, OH, Scott, IA, Scott, KY, Scott, MN, Scott, MS, Scotts Bluff, NE, Sebastian, AR, Sedgwick, KS, Seminole, FL, Seminole, OK, Seneca, OH, Sequoyah, OK, Sevier, TN, Sharkey, MS, Shasta, CA, Shawnee, KS, Sheboygan, WI, Shelby, AL, Shelby, IN, Shelby, TN, Sherburne, MN, Sheridan, MT, Sheridan, WY, Sherman, KS, Shoshone, ID, Sierra, CA, Silver Bow, MT, Simpson, KY, Sioux, NE, Siskiyou, CA, Sitka, AK, Skagit, WA, Skamania, WA, Smith, TX, Smyth, VA, Snohomish, WA, Socorro, NM, Solano, CA, Somerset, ME, Somerset, NJ, Somerset, PA, Sonoma, CA, Spalding, GA, Spartanburg, SC, Spencer, IN, Spokane, WA, Stafford, VA, Stanislaus, CA, Stark, ND, Stark, OH, Stearns, MN, Steele, ND, Steuben, NY, Stevens, WA, Stillwater, MT, Stoddard, MO, Story, IA, Strafford, NH, Stutsman, ND, Sublette, WY, Suffolk City, VA, Suffolk, MA, Suffolk, NY, Sullivan, IN, Sullivan, MO, Sullivan, NH, Sullivan, TN, Summers, WV, Summit, CO, Summit, OH, Sumner, KS, Sumner, TN, Sumter, AL, Sumter, GA, Susquehanna, PA, Sussex, DE, Sutter, CA, Swain, NC, Sweet Grass, MT, Sweetwater, WY, Swift, MN, Switzerland, IN, Talladega, AL, Tama, IA, Taney, MO, Tangipahoa, LA, Taos, NM, Tarrant, TX, Taylor, WI, Tazewell, IL, Tazewell, VA, Tehama, CA, Teller, CO, Terrebonne, LA, Teton, WY, Texas, MO, Thomas, NE, Thurston, NE, Thurston, WA, Tioga, PA, Tippecanoe, IN, Tipton, TN, Toa Baja, PR, Tolland, CT, Tompkins, NY, Tooele, UT, Travis, TX, Trego, KS, Trempealeau, WI, Trigg, KY, Trimble, KY, Trinity, CA, Trumbull, OH, Tucker, WV, Tulare, CA, Tulsa, OK, Tuolumne, CA, Tuscaloosa, AL, Tuscarawas, OH, Tuscola, MI, Twin Falls, ID, Tyler, TX, Uinta, WY, Uintah, UT, Ulster, NY, Umatilla, OR, Union, AR, Union, IA, Union, NC, Union, NJ, Union, OH, Union, OR, Union, SC, Union, SD, Union, TN, Utah, UT, Valencia, NM, Valley, ID, Van Buren, AR, Van Buren, IA, Van Buren, MI, Vanderburgh, IN, Ventura, CA, Vermillion, IN, Vernon, WI, Victoria, TX, Vieques, PR, Vigo, IN, Vilas, WI, Virginia Beach City, VA, Volusia, FL, Wabash, IN, Wake, NC, Wakulla, FL, Waldo, ME, Walker, AL, Walker, GA, Walla Walla, WA, Waller, TX, Wallowa, OR, Walton, GA, Walworth, WI, Ward, ND, Warren, IA, Warren, KY, Warren, MS, Warren, NJ, Warren, NY, Warren, OH, Warren, VA, Warrick, IN, Wasco, OR, Washington, AR, Washington, GA, Washington, IN, Washington, KY, Washington, MD, Washington, ME, Washington, MN, Washington, MS, Washington, NE, Washington, OH, Washington, OK, Washington, OR, Washington, PA, Washington, RI, Washington, TN, Washington, UT, Washington, VA, Washington, VT, Washington, WI, Washoe, NV, Washtenaw, MI, Watauga, NC, Waukesha, WI, Waupaca, WI, Wayne, IN, Wayne, MI, Wayne, NC, Wayne, NY, Wayne, UT, Wayne, WV, Webb, TX, Weber, UT, Webster, MS, Weld, CO, West Baton Rouge, LA, Westchester, NY, Westmoreland, PA, Weston, WY, Wexford, MI, Whatcom, WA, White Pine, NV, White, AR, Whitley, IN, Whitley, KY, Whitman, WA, Wichita, TX, Wicomico, MD, Wilkinson, GA, Will, IL, Williams, ND, Williamsburg, SC, Williamson, IL, Williamson, TN, Wilson, NC, Wilson, TN, Wilson, TX, Winchester City, VA, Windham, CT, Windham, VT, Windsor, VT, Winn, LA, Winnebago, IL, Winnebago, WI, Winona, MN, Wise, TX, Wise, VA, Wood, OH, Wood, WI, Wood, WV, Woodbury, IA, Woodward, OK, Worcester, MA, Worcester, MD, Wrangell Petersburg, AK, Wright, IA, Wright, MN, Wyandot, OH, Wyandotte, KS, Wyoming, PA, Wythe, VA, Yakima, WA, Yalobusha, MS, Yamhill, OR, Yancey, NC, Yavapai, AZ, Yellow Medicine, MN, Yellowstone, MT, Yolo, CA, York, ME, York, PA, York, SC, York, VA, Yuba, CA, Yuma, AZ, 1980 - 2023. Sage Data. Sage Publishing Ltd. (Dataset). Dataset-ID: 037-004-002
Creators: name: Environmental Protection Agency
Publisher: name: Sage Data. Sage Publishing Ltd
Year: 2024
Subjects: Air Pollutants
Air Pollution
Air Quality

description: Reports the number of days during the year that levels of ground-level ozone exceeded National Ambient Air Quality Standards. Ground-level ozone and airborne particles are the two pollutants that pose the greatest threat to human health in the United States.