SmogRank / World / South Korea / August 2025

Most polluted cities in South Korea, August 2025

135 cities in South Korea ranked by their average PM2.5 over the 31 days. Worst: Eisen at 17.5 µg/m³, #240 of 2,503 cities in the world. Cleanest: Koch'ang at 5.9. A city needs measurements on 70% of the days to be ranked.

← Eisen 17.5 µg/m³ 20 µg/m³0
Every city in South Korea ranked for August 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1EisenGyeongsangbuk-do
    67
  2. 2HwadoGyeonggi-do
    66
  3. 3Ganghwa-gunIncheon
    65
  4. 4UlsanUlsan
    64
  5. 5Icheon-siGyeonggi-do
    63
  6. 5HayangGyeongsangbuk-do
    63
  7. 7WŏnjuGangwon-do
    62
  8. 8IncheonIncheon
    61
  9. 9SantyokuGangwon-do
    61
  10. 10Donghae CityGangwon-do
    61
  11. 11SeonghwanChungcheongnam-do
    60
  12. 12Gimpo-siGyeonggi-do
    60
  13. 13HwawŏnDaegu
    59
  14. 14PyeongtaekGyeonggi-do
    59
  15. 14PohangGyeongsangbuk-do
    59
  16. 14GumiGyeongsangbuk-do
    59
  17. 17ChangnyeongGyeongsangnam-do
    58
  18. 18YangsanGyeongsangnam-do
    58
  19. 18SinhyeonGyeongsangnam-do
    58
  20. 20GoseongGyeongsangnam-do
    58
  21. 20Chinch'ŏnNorth Chungcheong
    58
  22. 22YeonilGyeongsangbuk-do
    58
  23. 22YecheonGyeongsangbuk-do
    58
  24. 24HanamGyeonggi-do
    57
  25. 25Ansan-siGyeonggi-do
    57
  26. 26ChungjuNorth Chungcheong
    57
  27. 26UngsangGyeongsangnam-do
    57
  28. 28SuwonGyeonggi-do
    57
  29. 28Guri-siGyeonggi-do
    57
  30. 28KimjeJeollabuk-do
    57
  31. 28ChangwonGyeongsangnam-do
    57
  32. 32YeojuGyeonggi-do
    57
  33. 32BusanBusan
    57
  34. 34Hwaseong-siGyeonggi-do
    56
  35. 34GwangmyeongGyeonggi-do
    56
  36. 36YesanChungcheongnam-do
    56
  37. 36OsanGyeonggi-do
    56
  38. 38JungpyongNorth Chungcheong
    56
  39. 38CheorwonGangwon-do
    56
  40. 38PubalGyeonggi-do
    56
  41. 41Gyeongsan-siGyeongsangbuk-do
    56
  42. 42DaeguDaegu
    56
  43. 42HaenamJeollanam-do
    56
  44. 42JeongeupJeollabuk-do
    56
  45. 45CheonanChungcheongnam-do
    55
  46. 46BuyeoChungcheongnam-do
    55
  47. 46Goyang-siGyeonggi-do
    55
  48. 46Cheongju-siNorth Chungcheong
    55
  49. 46NaesŏGyeongsangnam-do
    55
  50. 50SeoulSeoul
    55
  51. 50GwangjuGyeonggi-do
    55
  52. 50KoesanNorth Chungcheong
    55
  53. 50GwangyangJeollanam-do
    55
  54. 54WanjuJeollabuk-do
    55
  55. 54HongseongChungcheongnam-do
    55
  56. 54NamyangjuGyeonggi-do
    55
  57. 57YeongdongNorth Chungcheong
    55
  58. 57YŏnmuChungcheongnam-do
    55
  59. 59Uijeongbu-siGyeonggi-do
    55
  60. 59MiryangGyeongsangnam-do
    55
  61. 59IksanJeollabuk-do
    55
  62. 59SejongSejong-si
    55
  63. 63Yangp'yŏngGyeonggi-do
    54
  64. 63BoseongJeollanam-do
    54
  65. 65NonsanChungcheongnam-do
    54
  66. 66Bucheon-siGyeonggi-do
    54
  67. 66BuanJeollabuk-do
    54
  68. 66KimhaeGyeongsangnam-do
    54
  69. 66GijangBusan
    54
  70. 66Hongch’ŏnGangwon-do
    54
  71. 66TongyeongGyeongsangnam-do
    54
  72. 72ChinjuGyeongsangnam-do
    54
  73. 72HadongGyeongsangnam-do
    54
  74. 74GunsanJeollabuk-do
    53
  75. 75WaegwanGyeongsangbuk-do
    53
  76. 75TangjinChungcheongnam-do
    53
  77. 75GyeongjuGyeongsangbuk-do
    53
  78. 78Anyang-siGyeonggi-do
    53
  79. 79JeonjuJeollabuk-do
    53
  80. 79Seongnam-siGyeonggi-do
    53
  81. 81YeonggwangJeollanam-do
    53
  82. 82Jeju CityJeju-do
    52
  83. 82JangheungJeollanam-do
    52
  84. 84BoryeongChungcheongnam-do
    52
  85. 84SuncheonJeollanam-do
    52
  86. 84NamsaJeollabuk-do
    52
  87. 87MunsanGyeonggi-do
    52
  88. 88NangenJeollabuk-do
    52
  89. 88HwasunJeollanam-do
    52
  90. 90YeongjuGyeongsangbuk-do
    52
  91. 90Taesal-liChungcheongnam-do
    52
  92. 90AsanChungcheongnam-do
    52
  93. 90GeojeGyeongsangnam-do
    52
  94. 94DaejeonDaejeon
    51
  95. 94KinzanChungcheongnam-do
    51
  96. 94YeosuJeollanam-do
    51
  97. 97SeosanChungcheongnam-do
    51
  98. 97ChangsuJeollabuk-do
    51
  99. 99GongjuChungcheongnam-do
    51
  100. 100NeietsuGangwon-do
    50
  101. 100MasanGwangju
    50
  102. 102BeolgyoJeollanam-do
    49
  103. 102NajuJeollanam-do
    49
  104. 102MungyeongGyeongsangbuk-do
    49
  105. 102ImsilJeollabuk-do
    49
  106. 106KwangyangJeollanam-do
    49
  107. 106GimcheonGyeongsangbuk-do
    49
  108. 106GangneungGangwon-do
    49
  109. 109OkcheonNorth Chungcheong
    48
  110. 109AnseongGyeonggi-do
    48
  111. 111GaigeturiJeju-do
    47
  112. 111YeongamJeollanam-do
    47
  113. 113KunwiGyeongsangbuk-do
    47
  114. 113JangseongJeollanam-do
    47
  115. 113AndongGyeongsangbuk-do
    47
  116. 116T’aebaekGangwon-do
    46
  117. 116SokchoGangwon-do
    46
  118. 118MokpoJeollanam-do
    45
  119. 119YangguGangwon-do
    44
  120. 119GwangjuGwangju
    44
  121. 121DamyangJeollanam-do
    43
  122. 121SeogwipoJeju-do
    43
  123. 123Cheongsong gunGyeongsangbuk-do
    43
  124. 124YangjuGyeonggi-do
    42
  125. 124HwacheonGangwon-do
    42
  126. 124JumunjinGangwon-do
    42
  127. 127MuanJeollanam-do
    42
  128. 128ChuncheonGangwon-do
    41
  129. 129SinanJeollanam-do
    41
  130. 130Jinan-gunJeollabuk-do
    39
  131. 131WabuGyeonggi-do
    38
  132. 132SangjuGyeongsangbuk-do
    34
  133. 132GapyeongGyeonggi-do
    34
  134. 134KosongGangwon-do
    33
  135. 135Koch'angJeollabuk-do
    33
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). 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, August 2025 · South Korea now

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SmogRank, most polluted cities in South Korea, PM2.5, August 2025, smogrank.com/kr/history/2025-08 (accessed 2 Oct 2026).

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