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
    17.5
  2. 2HwadoGyeonggi-do
    17.1
  3. 3Ganghwa-gunIncheon
    16.7
  4. 4UlsanUlsan
    15.9
  5. 5Icheon-siGyeonggi-do
    15.3
  6. 5HayangGyeongsangbuk-do
    15.3
  7. 7WŏnjuGangwon-do
    14.9
  8. 8IncheonIncheon
    14.7
  9. 9SantyokuGangwon-do
    14.4
  10. 10Donghae CityGangwon-do
    14.2
  11. 11SeonghwanChungcheongnam-do
    14.0
  12. 12Gimpo-siGyeonggi-do
    13.7
  13. 13HwawŏnDaegu
    13.5
  14. 14PyeongtaekGyeonggi-do
    13.3
  15. 14PohangGyeongsangbuk-do
    13.3
  16. 14GumiGyeongsangbuk-do
    13.3
  17. 17ChangnyeongGyeongsangnam-do
    13.1
  18. 18YangsanGyeongsangnam-do
    12.9
  19. 18SinhyeonGyeongsangnam-do
    12.9
  20. 20GoseongGyeongsangnam-do
    12.8
  21. 20Chinch'ŏnNorth Chungcheong
    12.8
  22. 22YeonilGyeongsangbuk-do
    12.7
  23. 22YecheonGyeongsangbuk-do
    12.7
  24. 24HanamGyeonggi-do
    12.5
  25. 25Ansan-siGyeonggi-do
    12.4
  26. 26ChungjuNorth Chungcheong
    12.3
  27. 26UngsangGyeongsangnam-do
    12.3
  28. 28SuwonGyeonggi-do
    12.2
  29. 28Guri-siGyeonggi-do
    12.2
  30. 28KimjeJeollabuk-do
    12.2
  31. 28ChangwonGyeongsangnam-do
    12.2
  32. 32YeojuGyeonggi-do
    12.1
  33. 32BusanBusan
    12.1
  34. 34Hwaseong-siGyeonggi-do
    12.0
  35. 34GwangmyeongGyeonggi-do
    12.0
  36. 36YesanChungcheongnam-do
    11.9
  37. 36OsanGyeonggi-do
    11.9
  38. 38JungpyongNorth Chungcheong
    11.8
  39. 38CheorwonGangwon-do
    11.8
  40. 38PubalGyeonggi-do
    11.8
  41. 41Gyeongsan-siGyeongsangbuk-do
    11.7
  42. 42DaeguDaegu
    11.6
  43. 42HaenamJeollanam-do
    11.6
  44. 42JeongeupJeollabuk-do
    11.6
  45. 45CheonanChungcheongnam-do
    11.5
  46. 46BuyeoChungcheongnam-do
    11.4
  47. 46Goyang-siGyeonggi-do
    11.4
  48. 46Cheongju-siNorth Chungcheong
    11.4
  49. 46NaesŏGyeongsangnam-do
    11.4
  50. 50SeoulSeoul
    11.3
  51. 50GwangjuGyeonggi-do
    11.3
  52. 50KoesanNorth Chungcheong
    11.3
  53. 50GwangyangJeollanam-do
    11.3
  54. 54WanjuJeollabuk-do
    11.2
  55. 54HongseongChungcheongnam-do
    11.2
  56. 54NamyangjuGyeonggi-do
    11.2
  57. 57YeongdongNorth Chungcheong
    11.1
  58. 57YŏnmuChungcheongnam-do
    11.1
  59. 59Uijeongbu-siGyeonggi-do
    11.0
  60. 59MiryangGyeongsangnam-do
    11.0
  61. 59IksanJeollabuk-do
    11.0
  62. 59SejongSejong-si
    11.0
  63. 63Yangp'yŏngGyeonggi-do
    10.9
  64. 63BoseongJeollanam-do
    10.9
  65. 65NonsanChungcheongnam-do
    10.8
  66. 66Bucheon-siGyeonggi-do
    10.6
  67. 66BuanJeollabuk-do
    10.6
  68. 66KimhaeGyeongsangnam-do
    10.6
  69. 66GijangBusan
    10.6
  70. 66Hongch’ŏnGangwon-do
    10.6
  71. 66TongyeongGyeongsangnam-do
    10.6
  72. 72ChinjuGyeongsangnam-do
    10.5
  73. 72HadongGyeongsangnam-do
    10.5
  74. 74GunsanJeollabuk-do
    10.4
  75. 75WaegwanGyeongsangbuk-do
    10.3
  76. 75TangjinChungcheongnam-do
    10.3
  77. 75GyeongjuGyeongsangbuk-do
    10.3
  78. 78Anyang-siGyeonggi-do
    10.2
  79. 79JeonjuJeollabuk-do
    10.1
  80. 79Seongnam-siGyeonggi-do
    10.1
  81. 81YeonggwangJeollanam-do
    10.0
  82. 82Jeju CityJeju-do
    9.9
  83. 82JangheungJeollanam-do
    9.9
  84. 84BoryeongChungcheongnam-do
    9.8
  85. 84SuncheonJeollanam-do
    9.8
  86. 84NamsaJeollabuk-do
    9.8
  87. 87MunsanGyeonggi-do
    9.7
  88. 88NangenJeollabuk-do
    9.5
  89. 88HwasunJeollanam-do
    9.5
  90. 90YeongjuGyeongsangbuk-do
    9.4
  91. 90Taesal-liChungcheongnam-do
    9.4
  92. 90AsanChungcheongnam-do
    9.4
  93. 90GeojeGyeongsangnam-do
    9.4
  94. 94DaejeonDaejeon
    9.3
  95. 94KinzanChungcheongnam-do
    9.3
  96. 94YeosuJeollanam-do
    9.3
  97. 97SeosanChungcheongnam-do
    9.2
  98. 97ChangsuJeollabuk-do
    9.2
  99. 99GongjuChungcheongnam-do
    9.1
  100. 100NeietsuGangwon-do
    9.0
  101. 100MasanGwangju
    9.0
  102. 102BeolgyoJeollanam-do
    8.9
  103. 102NajuJeollanam-do
    8.9
  104. 102MungyeongGyeongsangbuk-do
    8.9
  105. 102ImsilJeollabuk-do
    8.9
  106. 106KwangyangJeollanam-do
    8.8
  107. 106GimcheonGyeongsangbuk-do
    8.8
  108. 106GangneungGangwon-do
    8.8
  109. 109OkcheonNorth Chungcheong
    8.7
  110. 109AnseongGyeonggi-do
    8.7
  111. 111GaigeturiJeju-do
    8.5
  112. 111YeongamJeollanam-do
    8.5
  113. 113KunwiGyeongsangbuk-do
    8.4
  114. 113JangseongJeollanam-do
    8.4
  115. 113AndongGyeongsangbuk-do
    8.4
  116. 116T’aebaekGangwon-do
    8.2
  117. 116SokchoGangwon-do
    8.2
  118. 118MokpoJeollanam-do
    8.1
  119. 119YangguGangwon-do
    7.9
  120. 119GwangjuGwangju
    7.9
  121. 121DamyangJeollanam-do
    7.8
  122. 121SeogwipoJeju-do
    7.8
  123. 123Cheongsong gunGyeongsangbuk-do
    7.7
  124. 124YangjuGyeonggi-do
    7.6
  125. 124HwacheonGangwon-do
    7.6
  126. 124JumunjinGangwon-do
    7.6
  127. 127MuanJeollanam-do
    7.5
  128. 128ChuncheonGangwon-do
    7.4
  129. 129SinanJeollanam-do
    7.3
  130. 130Jinan-gunJeollabuk-do
    7.0
  131. 131WabuGyeonggi-do
    6.9
  132. 132SangjuGyeongsangbuk-do
    6.2
  133. 132GapyeongGyeonggi-do
    6.2
  134. 134KosongGangwon-do
    6.0
  135. 135Koch'angJeollabuk-do
    5.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. 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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