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Acknowledgments US Department of Transportation - BTS

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Table 4-51: Air Pollution Trends in Selected Metropolitan Statistical Areas(Number <strong>of</strong> days with AQI values greater than 100 at trend sites and all monitoring sites)All sitesTrend sites(R) Totalnumber <strong>of</strong>sites in2010(R) Number<strong>of</strong> days withAQI > 100(2010)(R) Number<strong>of</strong> trendsitesNumber <strong>of</strong> days with AQI > 100Metropolitan Statistical Area1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010Akron, OH 18 4 7 69 49 66 72 73 83 52 71 82 57 60 62 34 23 8 0 4Albany-Schenectady-Troy, NY 26 4 7 13 12 9 8 9 15 (R) 4 18 (R) 18 (R) 10 5 (R) 9 (R) 3 (R) 15 (R) 8 1 4Albuquerque, NM 77 2 15 5 4 5 2 3 6 8 2 11 15 5 9 3 1 0 0 1Allentown-Bethlehem-Easton, PA 28 18 5 17 18 19 23 39 32 16 34 38 14 13 18 10 12 10 1 12Atlanta-Sandy Springs-Marietta, GA 64 27 17 35 57 50 61 84 97 72 42 44 24 22 32 46 40 25 11 14Austin-Round Rock, TX 25 3 1 8 28 5 2 9 14 14 5 8 9 8 9 13 4 2 4 2Bakersfield, CA 57 84 14 129 133 127 94 104 (R) 158 (R) 162 158 (R) 185 (R) 165 (R) 159 (R) 119 137 (R) 129 (R) 145 123 84Baltimore-Towson, MD 73 33 16 62 57 43 46 70 55 37 50 59 30 31 36 33 45 23 11 33Baton Rouge, LA 53 33 18 50 60 44 56 52 61 72 39 49 43 54 90 48 44 31 28 25Bergen-Passaic, NJ 20 22 6 0 0 0 0 1 2 1 1 1 2 1 4 2 1 U U UBirmingham-Hoover, AL 60 15 21 37 50 26 30 40 71 89 44 28 31 17 37 36 41 12 5 13Boston-Cambridge-Quincy, MA-NH 125 5 15 10 1 2 1 3 (R) 8 0 4 (R) 11 8 1 4 1 3 0 0 1Bradenton-Sarasota-Venice, FL 29 2 3 7 6 3 14 15 (R) 10 16 14 3 10 18 11 5 4 5 1 1Bridgeport-Stamford-Norwalk, CT 38 17 10 39 28 22 31 37 29 22 33 41 19 11 25 21 27 19 5 17Buffalo-Niagara Falls, NY 41 3 9 (R) 14 (R) 13 (R) 10 (R) 7 (R) 27 (R) 22 (R) 11 (R) 27 (R) 29 (R) 13 (R) 8 (R) 23 (R) 7 (R) 27 4 1 2Charleston-North Charleston, SC 28 0 8 10 1 7 7 12 13 9 0 4 3 3 8 9 5 1 0 0Charlotte-Gastonia-Concord, NC-SC 52 14 7 15 32 40 41 67 62 38 31 41 12 16 25 21 33 16 2 14Chicago-Naperville-Joliet, IL-IN-WI 231 28 59 69 80 47 57 84 81 51 86 46 37 28 53 28 52 46 24 28Cincinnati-Middletown, OH-KY-IN 109 27 20 (R) 37 (R) 39 (R) 36 (R) 31 (R) 44 (R) 52 (R) 28 (R) 39 (R) 47 (R) 28 (R) 16 (R) 41 (R) 19 (R) 42 14 5 16Cleveland-Elyria-Mentor, OH 91 73 24 153 116 109 80 94 120 61 62 86 72 62 89 64 60 54 3 16Columbia, SC 43 9 7 11 15 23 28 45 37 26 24 23 14 17 22 18 14 14 3 9Columbus, OH 32 6 7 23 27 26 17 40 37 16 20 38 12 3 20 5 13 4 1 2Dallas-Fort Worth-Arlington, TX 135 18 10 56 60 35 47 58 41 54 43 40 40 32 56 39 16 20 19 11Dayton, OH 23 13 4 12 10 17 11 9 17 3 8 19 2 0 10 1 3 0 1 1Denver-Aurora, CO 88 11 17 31 17 24 20 22 11 15 19 15 23 4 10 21 16 4 4 4Detroit-Warren-Livonia, MI 75 23 22 31 37 43 29 50 72 38 58 54 37 37 62 38 35 24 9 23El Paso, TX 63 9 13 49 72 61 27 33 8 16 14 15 13 5 10 10 8 8 2 3Fort Lauderdale, FL 36 7 12 3 3 2 3 9 7 5 5 3 0 1 1 4 7 U U UFort Worth-Arlington, TX 37 21 6 53 52 28 27 32 33 38 31 37 38 25 43 34 12 U U UFresno, CA 41 62 20 90 91 105 118 86 164 164 186 204 167 84 95 97 93 89 80 62Gary, IN 63 16 16 12 30 17 15 22 33 18 45 27 15 8 19 3 11 U U UGrand Rapids-Wyoming, MI 13 2 6 14 15 11 9 4 (R) 11 6 (R) 16 17 10 3 16 (R) 8 8 1 1 1Greensboro-Winston Salem-High Point, NC 62 39 5 20 25 18 30 48 38 29 22 42 13 5 14 8 21 U U UGreenville-Mauldin-Easley, SC 26 3 5 3 15 17 13 18 36 20 24 28 7 2 11 10 8 6 0 1Harrisburg-Carlisle, PA 16 5 8 33 33 18 23 38 33 19 42 37 16 10 22 14 20 13 0 4Hartford-West Hartford-East Hartford, CT 35 9 6 25 28 14 19 26 26 14 27 34 13 11 19 15 24 10 3 9Honolulu, HI 31 0 9 0 0 0 0 1 1 2 2 1 2 2 2 1 0 0 0 0Houston-Sugarland-Baytown, TX 128 34 25 66 92 56 67 65 74 69 50 44 55 42 58 35 28 18 18 21Indianapolis-Carmel, IN 90 15 19 (R) 60 (R) 48 (R) 36 (R) 30 (R) 40 (R) 45 (R) 25 (R) 33 (R) 48 (R) 32 (R) 20 (R) 48 (R) 25 (R) 33 7 6 8Jacksonville, FL 33 16 12 53 25 26 26 41 34 59 38 57 8 15 20 34 15 10 3 15Jersey City, NJ 17 14 8 19 21 15 20 16 28 9 17 22 10 5 13 13 12 U U UKansas City, MO-KS 86 25 13 19 36 15 20 23 13 21 9 26 45 33 42 65 34 36 41 18Knoxville, TN 53 16 17 53 82 87 82 109 126 97 86 118 96 98 101 84 107 80 20 15Las Vegas-Paradise, NV 100 10 3 (R) 7 (R) 3 (R) 12 (R) 2 (R) 7 8 (R) 4 (R) 1 (R) 8 10 4 8 (R) 9 (R) 5 0 0 1Little Rock-North Little Rock-Conway, AR 30 2 8 8 24 9 10 13 16 29 17 18 3 0 19 11 11 2 2 2Los Angeles-Long Beach-Santa Ana, CA 169 79 50 200 178 141 117 93 (R) 140 119 (R) 130 110 120 106 65 (R) 62 60 68 54 37Louisville/Jefferson County, KY-IN 62 54 14 89 69 58 59 79 110 73 79 62 58 54 71 51 75 44 25 29Madison, WI 18 2 3 1 15 7 5 8 12 3 7 10 8 1 9 1 10 1 0 2McAllen-Edinburg-Mission, TX 8 0 1 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0Memphis, TN-AR-MS 49 14 9 37 56 (R) 38 35 55 56 52 33 34 29 11 (R) 36 30 (R) 33 10 4 13Miami-Fort Lauderdale-Pompano Beach, FL 91 4 24 16 16 9 9 14 20 18 8 5 4 11 4 11 10 5 2 3Middlesex-Somerset-Hunterdon, NJ 15 30 4 19 31 19 28 39 35 19 29 36 11 15 22 9 21 U U UMilwaukee-Waukesha-West Allis, WI 58 9 12 17 23 15 6 16 25 8 25 21 17 6 21 6 11 3 5 8Minneapolis-St. Paul-Bloomington, MN-WI 132 4 18 18 22 6 7 5 5 9 12 5 15 11 11 1 5 1 2 1

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