Most Improved Cities for Air Quality

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

Showing 1–25 of 95 cities
  1. #1

    Fresno, CA

    Population: 732,197Monitored: 304 days↓ 13 AQI improvement
    B
    Median: 54
    Good Days:122
    Moderate Days:157
    Unhealthy Days:
    Worst Day:157 AQI
  2. #2

    Clovis, CA

    Population: 124,725Monitored: 304 days↓ 13 AQI improvement
    B
    Median: 54
    Good Days:122
    Moderate Days:157
    Unhealthy Days:
    Worst Day:157 AQI
  3. #3

    Pocatello, ID

    Population: 72,963Monitored: 304 days↓ 8 AQI improvement
    A
    Median: 31
    Good Days:278
    Moderate Days:25
    Unhealthy Days:
    Worst Day:111 AQI
  4. #4

    Peoria, AZ

    Population: 196,906Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  5. #5

    Queen Creek, AZ

    Population: 71,867Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  6. #6

    Chandler, AZ

    Population: 280,136Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  7. #7

    Scottsdale, AZ

    Population: 243,821Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  8. #8

    Tempe, AZ

    Population: 188,065Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  9. #9

    Phoenix, AZ

    Population: 4,121,103Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  10. #10

    Goodyear, AZ

    Population: 107,645Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  11. #11

    Surprise, AZ

    Population: 154,948Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  12. #12

    Gilbert, AZ

    Population: 280,262Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  13. #13

    Avondale, AZ

    Population: 92,477Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  14. #14

    Mesa, AZ

    Population: 511,764Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  15. #15

    Glendale, AZ

    Population: 252,833Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  16. #16

    Buckeye, AZ

    Population: 104,923Monitored: 304 days↓ 6 AQI improvement
    D
    Median: 71
    Good Days:50
    Moderate Days:219
    Unhealthy Days:6
    Worst Day:366 AQI
  17. #17

    Wyoming, MI

    Population: 77,353Monitored: 304 days↓ 5 AQI improvement
    B+
    Median: 46
    Good Days:182
    Moderate Days:118
    Unhealthy Days:
    Worst Day:138 AQI
  18. #18

    Grand Rapids, MI

    Population: 622,168Monitored: 304 days↓ 5 AQI improvement
    B+
    Median: 46
    Good Days:182
    Moderate Days:118
    Unhealthy Days:
    Worst Day:138 AQI
  19. #19

    Kalamazoo, MI

    Population: 215,288Monitored: 304 days↓ 5 AQI improvement
    A
    Median: 40
    Good Days:225
    Moderate Days:75
    Unhealthy Days:
    Worst Day:133 AQI
  20. #20

    Kentwood, MI

    Population: 54,296Monitored: 304 days↓ 5 AQI improvement
    B+
    Median: 46
    Good Days:182
    Moderate Days:118
    Unhealthy Days:
    Worst Day:138 AQI
  21. #21

    South Lyon, MI

    Population: 146,383Monitored: 304 days↓ 4 AQI improvement
    A-
    Median: 41
    Good Days:228
    Moderate Days:70
    Unhealthy Days:
    Worst Day:166 AQI
  22. #22

    Rochester Hills, MI

    Population: 77,089Monitored: 304 days↓ 4 AQI improvement
    A-
    Median: 41
    Good Days:228
    Moderate Days:70
    Unhealthy Days:
    Worst Day:166 AQI
  23. #23

    Troy, MI

    Population: 87,898Monitored: 304 days↓ 4 AQI improvement
    A-
    Median: 41
    Good Days:228
    Moderate Days:70
    Unhealthy Days:
    Worst Day:166 AQI
  24. #24

    Novi, MI

    Population: 66,717Monitored: 304 days↓ 4 AQI improvement
    A-
    Median: 41
    Good Days:228
    Moderate Days:70
    Unhealthy Days:
    Worst Day:166 AQI
  25. #25

    Royal Oak, MI

    Population: 57,950Monitored: 304 days↓ 4 AQI improvement
    A-
    Median: 41
    Good Days:228
    Moderate Days:70
    Unhealthy Days:
    Worst Day:166 AQI
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