SmogRank / World / South Korea / March 2025

Most polluted cities in South Korea, March 2025

136 cities in South Korea ranked by their average PM2.5 over the 31 days. Worst: Cheongsong gun at 64.5 µg/m³, #38 of 2,500 cities in the world. Cleanest: Kosong at 12.0. A city needs measurements on 70% of the days to be ranked.

← Cheongsong gun 64.5
Every city in South Korea ranked for March 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Cheongsong gunGyeongsangbuk-do
    115
  2. 2AndongGyeongsangbuk-do
    68
  3. 3YecheonGyeongsangbuk-do
    59
  4. 4SeonghwanChungcheongnam-do
    54
  5. 5YeongjuGyeongsangbuk-do
    54
  6. 6PubalGyeonggi-do
    54
  7. 7SuwonGyeonggi-do
    51
  8. 7Gimpo-siGyeonggi-do
    51
  9. 9GwangmyeongGyeonggi-do
    50
  10. 10Bucheon-siGyeonggi-do
    50
  11. 10CheorwonGangwon-do
    50
  12. 12MunsanGyeonggi-do
    50
  13. 13TangjinChungcheongnam-do
    50
  14. 13OsanGyeonggi-do
    50
  15. 13IncheonIncheon
    50
  16. 16YeojuGyeonggi-do
    50
  17. 17SeoulSeoul
    48
  18. 17AsanChungcheongnam-do
    48
  19. 17Anyang-siGyeonggi-do
    48
  20. 20YesanChungcheongnam-do
    48
  21. 20HongseongChungcheongnam-do
    48
  22. 20Ansan-siGyeonggi-do
    48
  23. 23Goyang-siGyeonggi-do
    48
  24. 24WŏnjuGangwon-do
    48
  25. 24PyeongtaekGyeonggi-do
    48
  26. 26Ganghwa-gunIncheon
    48
  27. 27MungyeongGyeongsangbuk-do
    47
  28. 27GwangjuGyeonggi-do
    47
  29. 29AnseongGyeonggi-do
    47
  30. 30IksanJeollabuk-do
    47
  31. 31Icheon-siGyeonggi-do
    47
  32. 32GunsanJeollabuk-do
    47
  33. 32JungpyongNorth Chungcheong
    47
  34. 32SejongSejong-si
    47
  35. 35Guri-siGyeonggi-do
    47
  36. 36Hwaseong-siGyeonggi-do
    47
  37. 36Cheongju-siNorth Chungcheong
    47
  38. 38Yangp'yŏngGyeonggi-do
    47
  39. 38GumiGyeongsangbuk-do
    47
  40. 40Seongnam-siGyeonggi-do
    45
  41. 41BoryeongChungcheongnam-do
    45
  42. 41BuanJeollabuk-do
    45
  43. 43KimjeJeollabuk-do
    45
  44. 44KinzanChungcheongnam-do
    45
  45. 44HanamGyeonggi-do
    45
  46. 46Uijeongbu-siGyeonggi-do
    45
  47. 47BuyeoChungcheongnam-do
    45
  48. 47CheonanChungcheongnam-do
    45
  49. 49NonsanChungcheongnam-do
    43
  50. 50JeongeupJeollabuk-do
    43
  51. 51SangjuGyeongsangbuk-do
    43
  52. 51Chinch'ŏnNorth Chungcheong
    43
  53. 53YŏnmuChungcheongnam-do
    43
  54. 54YeongdongNorth Chungcheong
    43
  55. 55GimcheonGyeongsangbuk-do
    43
  56. 56KoesanNorth Chungcheong
    43
  57. 56ChungjuNorth Chungcheong
    43
  58. 58SeosanChungcheongnam-do
    42
  59. 59MasanGwangju
    42
  60. 59NamyangjuGyeonggi-do
    42
  61. 61YangjuGyeonggi-do
    42
  62. 62ChuncheonGangwon-do
    40
  63. 63OkcheonNorth Chungcheong
    40
  64. 64GwangjuGwangju
    40
  65. 65WanjuJeollabuk-do
    40
  66. 66NamsaJeollabuk-do
    38
  67. 67GongjuChungcheongnam-do
    38
  68. 68GapyeongGyeonggi-do
    38
  69. 69DaejeonDaejeon
    38
  70. 70WabuGyeonggi-do
    38
  71. 71PohangGyeongsangbuk-do
    37
  72. 72YeonggwangJeollanam-do
    37
  73. 72TongyeongGyeongsangnam-do
    37
  74. 74ImsilJeollabuk-do
    37
  75. 75NeietsuGangwon-do
    37
  76. 76JeonjuJeollabuk-do
    35
  77. 76Jinan-gunJeollabuk-do
    35
  78. 78WaegwanGyeongsangbuk-do
    35
  79. 79NajuJeollanam-do
    35
  80. 79JangseongJeollanam-do
    35
  81. 81NangenJeollabuk-do
    35
  82. 82UlsanUlsan
    35
  83. 83YeonilGyeongsangbuk-do
    35
  84. 84MokpoJeollanam-do
    35
  85. 85Hongch’ŏnGangwon-do
    33
  86. 85ChangsuJeollabuk-do
    33
  87. 87MiryangGyeongsangnam-do
    33
  88. 87Gyeongsan-siGyeongsangbuk-do
    33
  89. 89DamyangJeollanam-do
    33
  90. 89HayangGyeongsangbuk-do
    33
  91. 91BusanBusan
    33
  92. 92DaeguDaegu
    33
  93. 93T’aebaekGangwon-do
    33
  94. 93KwangyangJeollanam-do
    33
  95. 95SantyokuGangwon-do
    32
  96. 95HwacheonGangwon-do
    32
  97. 95ChinjuGyeongsangnam-do
    32
  98. 98Taesal-liChungcheongnam-do
    32
  99. 98GoseongGyeongsangnam-do
    32
  100. 98HaenamJeollanam-do
    32
  101. 98NaesŏGyeongsangnam-do
    32
  102. 102KimhaeGyeongsangnam-do
    32
  103. 103MuanJeollanam-do
    32
  104. 103Jeju CityJeju-do
    32
  105. 103UngsangGyeongsangnam-do
    32
  106. 106Koch'angJeollabuk-do
    32
  107. 107YangguGangwon-do
    32
  108. 107GijangBusan
    32
  109. 109GangneungGangwon-do
    32
  110. 109GaigeturiJeju-do
    32
  111. 109YeongamJeollanam-do
    32
  112. 112HwawŏnDaegu
    30
  113. 113KunwiGyeongsangbuk-do
    30
  114. 113ChangwonGyeongsangnam-do
    30
  115. 113ChangnyeongGyeongsangnam-do
    30
  116. 116SinanJeollanam-do
    30
  117. 117BoseongJeollanam-do
    30
  118. 118Donghae CityGangwon-do
    30
  119. 119YangsanGyeongsangnam-do
    30
  120. 119GwangyangJeollanam-do
    30
  121. 121HadongGyeongsangnam-do
    28
  122. 122EisenGyeongsangbuk-do
    28
  123. 122SuncheonJeollanam-do
    28
  124. 122YeosuJeollanam-do
    28
  125. 122SeogwipoJeju-do
    28
  126. 122GeojeGyeongsangnam-do
    28
  127. 127GyeongjuGyeongsangbuk-do
    28
  128. 128JangheungJeollanam-do
    28
  129. 128HwadoGyeonggi-do
    28
  130. 130JumunjinGangwon-do
    27
  131. 131SinhyeonGyeongsangnam-do
    27
  132. 132HwasunJeollanam-do
    25
  133. 133SokchoGangwon-do
    25
  134. 133BeolgyoJeollanam-do
    25
  135. 135KuryeJeollanam-do
    22
  136. 136KosongGangwon-do
    20
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, March 2025 · South Korea now

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SmogRank, most polluted cities in South Korea, PM2.5, March 2025, smogrank.com/kr/history/2025-03 (accessed 2 Oct 2026).

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