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Top 101 counties with the highest Particulate Matter (PM10) 24-hour air pollution readings in 2005 (µg/m3)


1.  Inyo County, CA (Bishop, West Bishop, Lone Pine), pop. 17,945: 3538
2.  Mono County, CA (Mammoth Lakes), pop. 12,853: 1245
5.  El Paso County, TX (El Paso, Socorro, San Elizario), pop. 679,622: 208
6.  Dona Ana County, NM, pop. 174,682: 205
7.  Santa Cruz County, AZ (Nogales, Tubac, Patagonia), pop. 38,381: 205
9.  Maricopa County, AZ (Phoenix, Mesa, Glendale), pop. 3,072,149: 200
10.  St. Louis city, MO, pop. 348,189: 196
11.  Lake County, IN (Gary, Hammond, East Chicago), pop. 484,564: 183
12.  Jefferson County, AL (Birmingham, Hoover, Bessemer), pop. 662,047: 179
14.  Imperial County, CA (El Centro, Calexico, Brawley), pop. 142,361: 169
15.  Campbell County, WY (Gillette, Wright, Sleepy Hollow), pop. 33,698: 167
18.  San Diego County, CA (San Diego, Chula Vista, Oceanside), pop. 2,813,833: 154
20.  Scott County, IA (Davenport, Bettendorf, Eldridge), pop. 158,668: 151
23.  Anchorage Municipality, AK, pop. 260,283: 145
25.  Spokane County, WA (Spokane, Opportunity, Dishman), pop. 417,939: 142
26.  Clark County, NV (Las Vegas, Paradise, Henderson), pop. 1,375,765: 142
27.  Washoe County, NV (Reno, Sparks, Sun Valley), pop. 339,486: 142
29.  Alamosa County, CO (Alamosa, Hooper), pop. 14,966: 141
30.  Cameron County, TX (Brownsville, Harlingen, San Benito), pop. 335,227: 139
31.  Northampton County, PA (Bethlehem, Easton, Northampton), pop. 267,066: 139
33.  Harris County, TX (Houston, Pasadena, Baytown), pop. 3,400,578: 137
34.  Power County, ID (American Falls, Rockland, Arbon), pop. 7,538: 134
35.  Porter County, IN (Portage, Valparaiso, Chesterton), pop. 146,798: 133
36.  Wayne County, MI (Detroit, Livonia, Dearborn), pop. 2,061,162: 132
37.  Jasper County, MO (Joplin, Carthage, Webb City), pop. 104,686: 130
38.  Lexington County, SC (Seven Oaks, West Columbia, Cayce), pop. 216,014: 128
39.  Douglas County, NE (Omaha, Ralston, Elkhorn), pop. 463,585: 123
42.  Maui County, HI (Kahului, Kihei, Wailuku), pop. 128,094: 119
44.  Pitkin County, CO (Aspen, Snowmass Village), pop. 14,872: 116
45.  Cuyahoga County, OH (Cleveland, Parma, Lakewood), pop. 1,393,978: 115
47.  Kings County, CA (Hanford, Lemoore, Avenal), pop. 129,461: 113
49.  Matanuska-Susitna Borough, AK, pop. 59,322: 111
51.  Prowers County, CO (Lamar, Holly, Granada), pop. 14,483: 110
52.  Stevens County, WA (Colville, Chewelah, Kettle Falls), pop. 40,066: 109
53.  Madison County, IL (Granite City, Alton, Collinsville), pop. 258,941: 107
54.  Riverside County, CA (Riverside, Moreno Valley, Corona), pop. 1,545,387: 106
55.  Dawson County, NE (Lexington, Cozad, Gothenburg), pop. 24,365: 106
57.  Flathead County, MT (Kalispell, Evergreen, Whitefish), pop. 74,471: 104
58.  Mesa County, CO (Grand Junction, Clifton, Redlands), pop. 116,255: 104
59.  Sheridan County, WY (Sheridan, Story, Ranchester), pop. 26,560: 104
60.  Kern County, CA (Bakersfield, Delano, Oildale), pop. 661,645: 102
61.  Kay County, OK (Ponca City, Blackwell, Tonkawa), pop. 48,080: 101
62.  Tulare County, CA (Visalia, Tulare, Porterville), pop. 368,021: 100
63.  Lincoln County, MT (Libby, Eureka, Troy), pop. 18,837: 99
65.  Honolulu County, HI (Honolulu, Kailua, Kaneohe), pop. 876,156: 99
66.  Hancock County, WV (Weirton, Chester, Newell), pop. 32,667: 99
67.  Adams County, CO (Aurora, Westminster, Thornton), pop. 363,857: 97
69.  Webb County, TX (Laredo, Rio Bravo, El Cenizo), pop. 193,117: 95
70.  Canyon County, ID (Nampa, Caldwell, Middleton), pop. 131,441: 94
71.  Cass County, NE (Plattsmouth, Eagle, Weeping Water), pop. 24,334: 93
72.  Muskogee County, OK (Muskogee, Fort Gibson, Haskell), pop. 69,451: 93
74.  Fresno County, CA (Fresno, Clovis, Reedley), pop. 799,407: 92
75.  Weber County, UT (Ogden, Roy, North Ogden), pop. 196,533: 89
77.  Cook County, IL (Chicago, Cicero, Arlington Heights), pop. 5,376,741: 88
79.  Ada County, ID (Boise, Meridian, Eagle), pop. 300,904: 88
80.  Cache County, UT (Logan, Smithfield, Hyrum), pop. 91,391: 88
81.  Yuma County, AZ (Yuma, Fortuna Foothills, San Luis), pop. 160,026: 86
83.  Shoshone County, ID (Kellogg, Pinehurst, Osburn), pop. 13,771: 85
86.  Lake County, MT (Polson, Pablo, Ronan), pop. 26,507: 82
87.  Cochise County, AZ (Sierra Vista, Douglas, Bisbee), pop. 117,755: 82
88.  Colusa County, CA (Colusa, Williams, Arbuckle), pop. 18,804: 82
90.  Stanislaus County, CA (Modesto, Turlock, Ceres), pop. 446,997: 81
92.  La Salle County, IL (Ottawa, Streator, Peru), pop. 111,509: 81
93.  Clinton County, IA (Clinton, De Witt, Camanche), pop. 50,149: 80
95.  Rosebud County, MT (Colstrip, Lame Deer, Forsyth), pop. 9,383: 80
96.  McMinn County, TN (Athens, Etowah, Englewood), pop. 49,015: 80
97.  Lake County, OR (Lakeview, Paisley, Summer Lake), pop. 7,422: 80
101.  Hamilton County, FL (Jasper, Jennings, White Springs), pop. 13,327: 78



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