SmogRank / World / South Korea / 2025

Most polluted cities in South Korea, 2025

135 cities in South Korea ranked by their average PM2.5 over the 365 days; 135 above the WHO annual guideline (5.0 µg/m³). Worst: Taesal-li at 35.6 µg/m³, #115 of 2,320 cities in the world. Cleanest: Suncheon at 12.1. A city needs measurements on 70% of the days to be ranked.

← Taesal-li 35.6 µg/m³ 30 µg/m³5 WHO annual guideline
Every city in South Korea ranked for 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. 1Taesal-liChungcheongnam-do
    1017.1×
  2. 2PubalGyeonggi-do
    966.6×
  3. 3WŏnjuGangwon-do
    926.2×
  4. 4JungpyongNorth Chungcheong
    906.0×
  5. 5BuyeoChungcheongnam-do
    906.0×
  6. 6Yangp'yŏngGyeonggi-do
    906.0×
  7. 7SeonghwanChungcheongnam-do
    895.9×
  8. 8WabuGyeonggi-do
    895.9×
  9. 9OkcheonNorth Chungcheong
    885.8×
  10. 10MuanJeollanam-do
    865.6×
  11. 11YeojuGyeonggi-do
    855.4×
  12. 12AsanChungcheongnam-do
    845.3×
  13. 13HongseongChungcheongnam-do
    845.3×
  14. 14ChuncheonGangwon-do
    835.3×
  15. 15TangjinChungcheongnam-do
    825.2×
  16. 15Icheon-siGyeonggi-do
    825.2×
  17. 17YesanChungcheongnam-do
    815.1×
  18. 18YeongdongNorth Chungcheong
    815.0×
  19. 19BoryeongChungcheongnam-do
    815.0×
  20. 20KinzanChungcheongnam-do
    804.9×
  21. 21GapyeongGyeonggi-do
    804.9×
  22. 22GongjuChungcheongnam-do
    794.8×
  23. 23PyeongtaekGyeonggi-do
    794.8×
  24. 23Hongch’ŏnGangwon-do
    794.8×
  25. 25Cheongju-siNorth Chungcheong
    794.8×
  26. 26Ganghwa-gunIncheon
    784.8×
  27. 27WaegwanGyeongsangbuk-do
    774.7×
  28. 28KosongGangwon-do
    774.6×
  29. 29AndongGyeongsangbuk-do
    774.6×
  30. 29SejongSejong-si
    774.6×
  31. 31HadongGyeongsangnam-do
    774.6×
  32. 32SeosanChungcheongnam-do
    774.6×
  33. 33HwawŏnDaegu
    754.4×
  34. 34KimjeJeollabuk-do
    754.4×
  35. 34CheorwonGangwon-do
    754.4×
  36. 36WanjuJeollabuk-do
    754.4×
  37. 36SinhyeonGyeongsangnam-do
    754.4×
  38. 38HwacheonGangwon-do
    754.4×
  39. 38JeongeupJeollabuk-do
    754.4×
  40. 40MasanGwangju
    744.3×
  41. 40JumunjinGangwon-do
    744.3×
  42. 42YeongjuGyeongsangbuk-do
    744.3×
  43. 42SokchoGangwon-do
    744.3×
  44. 42Hwaseong-siGyeonggi-do
    744.3×
  45. 45NamyangjuGyeonggi-do
    744.3×
  46. 46SangjuGyeongsangbuk-do
    744.3×
  47. 46ChangnyeongGyeongsangnam-do
    744.3×
  48. 48Cheongsong gunGyeongsangbuk-do
    744.3×
  49. 49MiryangGyeongsangnam-do
    744.2×
  50. 50SantyokuGangwon-do
    734.2×
  51. 50HwasunJeollanam-do
    734.2×
  52. 52OsanGyeonggi-do
    734.2×
  53. 53YangjuGyeonggi-do
    734.2×
  54. 53GwangjuGyeonggi-do
    734.2×
  55. 53KunwiGyeongsangbuk-do
    734.2×
  56. 53KoesanNorth Chungcheong
    734.2×
  57. 57Donghae CityGangwon-do
    734.2×
  58. 58HwadoGyeonggi-do
    734.1×
  59. 59AnseongGyeonggi-do
    724.1×
  60. 60GwangmyeongGyeonggi-do
    724.1×
  61. 61GumiGyeongsangbuk-do
    724.1×
  62. 62ChinjuGyeongsangnam-do
    724.0×
  63. 62YŏnmuChungcheongnam-do
    724.0×
  64. 64NonsanChungcheongnam-do
    714.0×
  65. 64TongyeongGyeongsangnam-do
    714.0×
  66. 66UngsangGyeongsangnam-do
    714.0×
  67. 67ChungjuNorth Chungcheong
    714.0×
  68. 67GeojeGyeongsangnam-do
    714.0×
  69. 69ChangsuJeollabuk-do
    713.9×
  70. 69Ansan-siGyeonggi-do
    713.9×
  71. 71YeonggwangJeollanam-do
    713.9×
  72. 71NangenJeollabuk-do
    713.9×
  73. 71Gimpo-siGyeonggi-do
    713.9×
  74. 74MokpoJeollanam-do
    703.8×
  75. 74KuryeJeollanam-do
    703.8×
  76. 76Guri-siGyeonggi-do
    703.8×
  77. 76Goyang-siGyeonggi-do
    703.8×
  78. 76IksanJeollabuk-do
    703.8×
  79. 79IncheonIncheon
    693.8×
  80. 80CheonanChungcheongnam-do
    693.8×
  81. 81YangguGangwon-do
    693.7×
  82. 81SuwonGyeonggi-do
    693.7×
  83. 83GoseongGyeongsangnam-do
    693.7×
  84. 83HayangGyeongsangbuk-do
    693.7×
  85. 83HanamGyeonggi-do
    693.7×
  86. 86Chinch'ŏnNorth Chungcheong
    683.7×
  87. 87GunsanJeollabuk-do
    683.7×
  88. 88MunsanGyeonggi-do
    683.6×
  89. 88GwangyangJeollanam-do
    683.6×
  90. 90SeoulSeoul
    683.6×
  91. 90NajuJeollanam-do
    683.6×
  92. 92Bucheon-siGyeonggi-do
    683.6×
  93. 92NamsaJeollabuk-do
    683.6×
  94. 92Koch'angJeollabuk-do
    683.6×
  95. 92GangneungGangwon-do
    683.6×
  96. 96YangsanGyeongsangnam-do
    673.6×
  97. 96JangseongJeollanam-do
    673.6×
  98. 98BuanJeollabuk-do
    673.5×
  99. 98GimcheonGyeongsangbuk-do
    673.5×
  100. 100NaesŏGyeongsangnam-do
    663.5×
  101. 101UlsanUlsan
    663.5×
  102. 101Uijeongbu-siGyeonggi-do
    663.5×
  103. 103Anyang-siGyeonggi-do
    663.4×
  104. 104PohangGyeongsangbuk-do
    663.4×
  105. 105GyeongjuGyeongsangbuk-do
    663.4×
  106. 106DamyangJeollanam-do
    653.4×
  107. 106YeongamJeollanam-do
    653.4×
  108. 108HaenamJeollanam-do
    653.3×
  109. 108Seongnam-siGyeonggi-do
    653.3×
  110. 110YeonilGyeongsangbuk-do
    653.3×
  111. 110SeogwipoJeju-do
    653.3×
  112. 112NeietsuGangwon-do
    653.3×
  113. 112YecheonGyeongsangbuk-do
    653.3×
  114. 112BoseongJeollanam-do
    653.3×
  115. 115EisenGyeongsangbuk-do
    643.2×
  116. 116ImsilJeollabuk-do
    643.2×
  117. 117MungyeongGyeongsangbuk-do
    643.2×
  118. 117Gyeongsan-siGyeongsangbuk-do
    643.2×
  119. 119DaeguDaegu
    633.1×
  120. 119JangheungJeollanam-do
    633.1×
  121. 121GaigeturiJeju-do
    633.1×
  122. 122BusanBusan
    623.0×
  123. 123DaejeonDaejeon
    623.0×
  124. 124KwangyangJeollanam-do
    623.0×
  125. 125JeonjuJeollabuk-do
    623.0×
  126. 126BeolgyoJeollanam-do
    612.9×
  127. 126GwangjuGwangju
    612.9×
  128. 128ChangwonGyeongsangnam-do
    612.9×
  129. 129KimhaeGyeongsangnam-do
    602.8×
  130. 130GijangBusan
    602.8×
  131. 131SinanJeollanam-do
    602.8×
  132. 132Jeju CityJeju-do
    592.7×
  133. 133Jinan-gunJeollabuk-do
    592.6×
  134. 134YeosuJeollanam-do
    582.6×
  135. 135SuncheonJeollanam-do
    572.4×
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

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

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