Demographia

Air Pollution Ranked in US Metropolitan Areas: 1997

Number of Days with PSI Values Greater than 100 at Trend Sites
1997 Rank (Best to Worst) Metropolitan Area 1988 1997 Change 1988 Rank (Best to Worst) Rank: Change
1 Honolulu, HI 0 0 0.0% 1 86
1 West Palm Beach-Boca Raton, FL 0 0 0.0% 1 86
1 San Francisco, CA 1 0 -100.0% 4 1
1 Syracuse, NY 1 0 -100.0% 4 1
1 Fort Lauderdale, FL 3 0 -100.0% 7 1
1 Austin-San Marcos, TX 7 0 -100.0% 11 1
1 Omaha, NE-IA 7 0 -100.0% 11 1
1 Oakland, CA 8 0 -100.0% 14 1
1 Portland-Vancouver, OR-WA 9 0 -100.0% 17 1
1 Albuquerque, NM 9 0 -100.0% 17 1
1 Tacoma, WA 10 0 -100.0% 21 1
1 Minneapolis-St. Paul, MN-WI 11 0 -100.0% 22 1
1 San Jose, CA 24 0 -100.0% 34 1
1 Las Vegas, NV-AZ 30 0 -100.0% 47 1
1 Denver, CO 35 0 -100.0% 53 1
16 Tucson, AZ 6 1 -83.3% 10 26
16 Little Rock-North Little Rock, AR 9 1 -88.9% 17 21
16 Salt Lake City-Ogden, UT 16 1 -93.8% 25 18
16 Seattle-Bellevue-Everett, WA 20 1 -95.0% 28 16
16 Buffalo-Niagara Falls, NY 31 1 -96.8% 50 15
21 Sacramento, CA 88 2 -97.7% 86 14
22 San Antonio, TX 7 3 -57.1% 11 64
22 Miami, FL 8 3 -62.5% 14 59
22 Charleston-North Charleston, SC 11 3 -72.7% 22 43
22 El Paso, TX 15 3 -80.0% 24 30
22 Albany-Schenectady-Troy, NY 23 3 -87.0% 30 24
22 Youngstown-Warren, OH 25 3 -88.0% 38 23
22 Toledo, OH 29 3 -89.7% 44 20
22 Orange County, CA 56 3 -94.6% 80 17
30 Orlando, FL 2 4 100.0% 6 91
30 Jacksonville, FL 4 4 0.0% 8 86
30 Oklahoma City, OK 8 4 -50.0% 14 70
30 Tampa, FL 9 4 -55.6% 17 66
30 Milwaukee-Waukesha, WI 40 4 -90.0% 66 19
35 Columbus, OH 24 5 -79.2% 34 31
35 Bergen-Passaic, NJ 27 5 -81.5% 40 28
37 New Orleans, LA 24 6 -75.0% 34 37
37 Rochester, NY 24 6 -75.0% 34 37
37 Wilmington-Newark, DE-MD 28 6 -78.6% 42 32
37 Grand Rapids-Muskegon-Holland, MI 36 6 -83.3% 58 26
37 Akron, OH 46 6 -87.0% 75 24
42 Tulsa, OK 23 7 -69.6% 30 48
43 Baton Rouge, LA 17 8 -52.9% 26 69
43 Nassau-Suffolk, NY 22 8 -63.6% 29 56
43 Boston, MA-NH 28 8 -71.4% 42 45
43 Birmingham, AL 33 8 -75.8% 51 35
47 Jersey City, NJ 30 9 -70.0% 47 46
47 Scranton-Wilkes Barre-Hazleton, PA 30 9 -70.0% 47 46
47 Greenville-Spartanburg-Anderson, SC 35 9 -74.3% 53 39
47 Dayton-Springfield, OH 37 9 -75.7% 59 36
47 Harrisburg-Lebanon-Carlisle, PA 39 9 -76.9% 63 34
47 Chicago, IL 40 9 -77.5% 66 33
53 Providence-Fall River-Warwick, RI-MA 18 10 -44.4% 27 76
53 Springfield, MA 29 10 -65.5% 44 55
55 Cincinnati, OH-KY-IN 57 11 -80.7% 82 29
56 Monmouth-Ocean, NJ 0 12 0.0% 1 86
56 Detroit, MI 35 12 -65.7% 53 54
56 Gary, IN 37 12 -67.6% 59 52
56 Indianapolis, IN 39 12 -69.2% 63 49
56 Cleveland-Lorain-Elyria, OH 45 12 -73.3% 74 42
61 Raleigh-Durham-Chapel Hill, NC 4 13 225.0% 8 92
61 Allentown-Bethlehem-Easton, PA 35 13 -62.9% 53 58
61 Newark, NJ 41 13 -68.3% 68 50
61 Greensboro-Winston-Salem-High Pt, NC 46 13 -71.7% 75 44
61 Louisville, KY-IN 49 13 -73.5% 77 41
66 Fort Worth-Arlington, TX 27 14 -48.1% 40 75
66 Memphis, TN-AR-MS 44 14 -68.2% 71 51
66 San Diego, CA 123 14 -88.6% 89 22
69 Norfolk-VA Beach-Newport News, VA-NC 23 15 -34.8% 30 82
69 Phoenix-Mesa, AZ 29 15 -48.3% 44 74
69 Dallas, TX 37 15 -59.5% 59 61
69 St. Louis, MO-IL 44 15 -65.9% 71 53
73 Hartford, CT 39 16 -59.0% 63 63
74 Kansas City, MO-KS 23 18 -21.7% 30 85
74 Middlesex-Somerset-Hunterdon, NJ 35 18 -48.6% 53 73
76 New Haven-Meriden, CT 26 19 -26.9% 39 84
77 Pittsburgh, PA 43 20 -53.5% 69 68
77 Nashville, TN 55 20 -63.6% 79 56
79 Richmond-Petersburg, VA 37 21 -43.2% 59 77
80 New York, NY 57 23 -59.6% 82 60
81 Charlotte-Gastonia-Rock Hill, NC-SC 43 26 -39.5% 69 81
81 Atlanta, GA 44 26 -40.9% 71 79
83 Washington, DC-MD-VA-WV 56 28 -50.0% 80 70
84 Baltimore, MD 60 30 -50.0% 84 70
85 Philadelphia, PA-NJ 53 32 -39.6% 78 80
86 Knoxville, TN 33 36 9.1% 51 90
87 Ventura, CA 108 44 -59.3% 87 62
88 Houston, TX 72 47 -34.7% 85 83
89 Fresno, CA 110 50 -54.5% 88 67
90 Bakersfield, CA 126 55