Most Improved Cities for Air Quality

Cities showing the greatest air quality improvements from 2024 to 2025.

Showing 76–95 of 95 cities
  1. #76

    Des Moines, IA

    Population: 570,091Monitored: 304 days↑ 1 AQI worsening
    B+
    Median: 46
    Good Days:178
    Moderate Days:124
    Unhealthy Days:
    Worst Day:136 AQI
  2. #77

    Wheaton, MD

    Population: 52,926Monitored: 303 days↑ 1 AQI worsening
    A-
    Median: 41
    Good Days:253
    Moderate Days:50
    Unhealthy Days:
    Worst Day:90 AQI
  3. #78

    Ankeny, IA

    Population: 72,615Monitored: 304 days↑ 1 AQI worsening
    B+
    Median: 46
    Good Days:178
    Moderate Days:124
    Unhealthy Days:
    Worst Day:136 AQI
  4. #79

    St. George, UT

    Population: 148,405Monitored: 304 days↑ 1 AQI worsening
    A-
    Median: 45
    Good Days:216
    Moderate Days:88
    Unhealthy Days:
    Worst Day:97 AQI
  5. #80

    West Des Moines, IA

    Population: 71,083Monitored: 304 days↑ 1 AQI worsening
    B+
    Median: 46
    Good Days:178
    Moderate Days:124
    Unhealthy Days:
    Worst Day:136 AQI
  6. #81

    Gaithersburg, MD

    Population: 69,825Monitored: 303 days↑ 1 AQI worsening
    A-
    Median: 41
    Good Days:253
    Moderate Days:50
    Unhealthy Days:
    Worst Day:90 AQI
  7. #82

    Bethesda, MD

    Population: 69,397Monitored: 303 days↑ 1 AQI worsening
    A-
    Median: 41
    Good Days:253
    Moderate Days:50
    Unhealthy Days:
    Worst Day:90 AQI
  8. #83

    Rockville, MD

    Population: 67,671Monitored: 303 days↑ 1 AQI worsening
    A-
    Median: 41
    Good Days:253
    Moderate Days:50
    Unhealthy Days:
    Worst Day:90 AQI
  9. #84

    Bel Air South, MD

    Population: 58,137Monitored: 303 days↑ 1 AQI worsening
    A-
    Median: 43
    Good Days:226
    Moderate Days:74
    Unhealthy Days:
    Worst Day:143 AQI
  10. #85

    Portland, ME

    Population: 210,907Monitored: 304 days↑ 2 AQI worsening
    A
    Median: 39
    Good Days:225
    Moderate Days:74
    Unhealthy Days:
    Worst Day:136 AQI
  11. #86

    Logan, UT

    Population: 124,449Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 46
    Good Days:186
    Moderate Days:118
    Unhealthy Days:
    Worst Day:87 AQI
  12. #87

    Layton, UT

    Population: 83,286Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 48
    Good Days:181
    Moderate Days:116
    Unhealthy Days:
    Worst Day:119 AQI
  13. #88

    Bowie, MD

    Population: 57,926Monitored: 304 days↑ 2 AQI worsening
    A-
    Median: 41
    Good Days:254
    Moderate Days:47
    Unhealthy Days:
    Worst Day:126 AQI
  14. #89

    Orem, UT

    Population: 97,182Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 49
    Good Days:164
    Moderate Days:139
    Unhealthy Days:
    Worst Day:109 AQI
  15. #90

    Eagle Mountain, UT

    Population: 53,290Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 49
    Good Days:164
    Moderate Days:139
    Unhealthy Days:
    Worst Day:109 AQI
  16. #91

    Lehi, UT

    Population: 85,173Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 49
    Good Days:164
    Moderate Days:139
    Unhealthy Days:
    Worst Day:109 AQI
  17. #92

    Ogden, UT

    Population: 630,643Monitored: 305 days↑ 2 AQI worsening
    B+
    Median: 47
    Good Days:187
    Moderate Days:116
    Unhealthy Days:
    Worst Day:119 AQI
  18. #93

    Provo, UT

    Population: 641,732Monitored: 304 days↑ 2 AQI worsening
    B+
    Median: 49
    Good Days:164
    Moderate Days:139
    Unhealthy Days:
    Worst Day:109 AQI
  19. #94

    Hagerstown, MD

    Population: 204,653Monitored: 304 days↑ 2 AQI worsening
    A-
    Median: 42
    Good Days:235
    Moderate Days:69
    Unhealthy Days:
    Worst Day:90 AQI
  20. #95

    Staten Island, NY

    Population: 495,747Monitored: 316 days↑ 3 AQI worsening
    A-
    Median: 41
    Good Days:238
    Moderate Days:75
    Unhealthy Days:
    Worst Day:129 AQI
Previous
11234