SmogRank / World / South Korea / March 2026

Most polluted cities in South Korea, March 2026

136 cities in South Korea ranked by their average PM2.5 over the 31 days. Worst: Seonghwan at 39.2 µg/m³, #149 of 2,616 cities in the world. Cleanest: Beolgyo at 15.3. A city needs measurements on 70% of the days to be ranked.

← Seonghwan 39.2 µg/m³ 30 µg/m³0
Every city in South Korea ranked for March 2026, 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. 1SeonghwanChungcheongnam-do
    110
  2. 2PubalGyeonggi-do
    103
  3. 3AsanChungcheongnam-do
    98
  4. 4KimjeJeollabuk-do
    96
  5. 5BuanJeollabuk-do
    96
  6. 6HwadoGyeonggi-do
    95
  7. 7PyeongtaekGyeonggi-do
    94
  8. 8TangjinChungcheongnam-do
    94
  9. 9YeongjuGyeongsangbuk-do
    93
  10. 10AnseongGyeonggi-do
    93
  11. 11Bucheon-siGyeonggi-do
    93
  12. 12Gimpo-siGyeonggi-do
    93
  13. 13Hwaseong-siGyeonggi-do
    92
  14. 13Ansan-siGyeonggi-do
    92
  15. 15IncheonIncheon
    92
  16. 16YeojuGyeonggi-do
    92
  17. 17OsanGyeonggi-do
    92
  18. 17CheonanChungcheongnam-do
    92
  19. 19YesanChungcheongnam-do
    91
  20. 19GunsanJeollabuk-do
    91
  21. 21Goyang-siGyeonggi-do
    91
  22. 22SeoulSeoul
    91
  23. 22Guri-siGyeonggi-do
    91
  24. 22HongseongChungcheongnam-do
    91
  25. 25SuwonGyeonggi-do
    91
  26. 26SangjuGyeongsangbuk-do
    90
  27. 27GwangmyeongGyeonggi-do
    90
  28. 28MunsanGyeonggi-do
    90
  29. 29WanjuJeollabuk-do
    89
  30. 29IksanJeollabuk-do
    89
  31. 29SejongSejong-si
    89
  32. 32Gyeongsan-siGyeongsangbuk-do
    89
  33. 33WŏnjuGangwon-do
    89
  34. 33Chinch'ŏnNorth Chungcheong
    89
  35. 35Icheon-siGyeonggi-do
    88
  36. 35Anyang-siGyeonggi-do
    88
  37. 37YeonilGyeongsangbuk-do
    88
  38. 37Ganghwa-gunIncheon
    88
  39. 39GumiGyeongsangbuk-do
    88
  40. 40PohangGyeongsangbuk-do
    88
  41. 41GwangjuGyeonggi-do
    88
  42. 42JeongeupJeollabuk-do
    87
  43. 43Seongnam-siGyeonggi-do
    87
  44. 44NamyangjuGyeonggi-do
    87
  45. 45KoesanNorth Chungcheong
    87
  46. 45ChungjuNorth Chungcheong
    87
  47. 45HanamGyeonggi-do
    87
  48. 48BoryeongChungcheongnam-do
    86
  49. 48HayangGyeongsangbuk-do
    86
  50. 48CheorwonGangwon-do
    86
  51. 48Cheongju-siNorth Chungcheong
    86
  52. 52OkcheonNorth Chungcheong
    86
  53. 53WaegwanGyeongsangbuk-do
    86
  54. 54WabuGyeonggi-do
    86
  55. 55Uijeongbu-siGyeonggi-do
    85
  56. 56Yangp'yŏngGyeonggi-do
    85
  57. 56YangjuGyeonggi-do
    85
  58. 58DaeguDaegu
    85
  59. 59NamsaJeollabuk-do
    85
  60. 60SantyokuGangwon-do
    85
  61. 61GapyeongGyeonggi-do
    84
  62. 62YŏnmuChungcheongnam-do
    84
  63. 63EisenGyeongsangbuk-do
    84
  64. 63GimcheonGyeongsangbuk-do
    84
  65. 65KinzanChungcheongnam-do
    83
  66. 66Taesal-liChungcheongnam-do
    83
  67. 66AndongGyeongsangbuk-do
    83
  68. 68NangenJeollabuk-do
    82
  69. 68HwawŏnDaegu
    82
  70. 70HadongGyeongsangnam-do
    82
  71. 71MiryangGyeongsangnam-do
    82
  72. 71JungpyongNorth Chungcheong
    82
  73. 73MasanGwangju
    81
  74. 73SinhyeonGyeongsangnam-do
    81
  75. 73Donghae CityGangwon-do
    81
  76. 76JeonjuJeollabuk-do
    81
  77. 77UlsanUlsan
    81
  78. 78ChuncheonGangwon-do
    80
  79. 79SeosanChungcheongnam-do
    80
  80. 80YeongdongNorth Chungcheong
    80
  81. 80TongyeongGyeongsangnam-do
    80
  82. 80Jinan-gunJeollabuk-do
    80
  83. 83MungyeongGyeongsangbuk-do
    80
  84. 83HaenamJeollanam-do
    80
  85. 85DaejeonDaejeon
    80
  86. 85NonsanChungcheongnam-do
    80
  87. 85ChangsuJeollabuk-do
    80
  88. 88YecheonGyeongsangbuk-do
    79
  89. 88KunwiGyeongsangbuk-do
    79
  90. 90MokpoJeollanam-do
    79
  91. 90ChinjuGyeongsangnam-do
    79
  92. 92SokchoGangwon-do
    79
  93. 92Koch'angJeollabuk-do
    79
  94. 94BusanBusan
    79
  95. 94GyeongjuGyeongsangbuk-do
    79
  96. 94GongjuChungcheongnam-do
    79
  97. 97GwangjuGwangju
    78
  98. 97GeojeGyeongsangnam-do
    78
  99. 99ImsilJeollabuk-do
    78
  100. 99Hongch’ŏnGangwon-do
    78
  101. 101JumunjinGangwon-do
    78
  102. 102Cheongsong gunGyeongsangbuk-do
    77
  103. 103YeongamJeollanam-do
    77
  104. 104YangguGangwon-do
    76
  105. 104KimhaeGyeongsangnam-do
    76
  106. 106NeietsuGangwon-do
    76
  107. 107T’aebaekGangwon-do
    76
  108. 107GoseongGyeongsangnam-do
    76
  109. 109GijangBusan
    75
  110. 110GangneungGangwon-do
    75
  111. 110HwacheonGangwon-do
    75
  112. 110ChangwonGyeongsangnam-do
    75
  113. 113DamyangJeollanam-do
    74
  114. 114YangsanGyeongsangnam-do
    74
  115. 114KwangyangJeollanam-do
    74
  116. 116SuncheonJeollanam-do
    73
  117. 117YeonggwangJeollanam-do
    73
  118. 117NaesŏGyeongsangnam-do
    73
  119. 119ChangnyeongGyeongsangnam-do
    73
  120. 120UngsangGyeongsangnam-do
    72
  121. 121KosongGangwon-do
    72
  122. 121JangseongJeollanam-do
    72
  123. 123SinanJeollanam-do
    72
  124. 124GwangyangJeollanam-do
    71
  125. 125KuryeJeollanam-do
    71
  126. 126YeosuJeollanam-do
    71
  127. 127MuanJeollanam-do
    70
  128. 128Jeju CityJeju-do
    70
  129. 129NajuJeollanam-do
    69
  130. 129JangheungJeollanam-do
    69
  131. 131GaigeturiJeju-do
    69
  132. 132BoseongJeollanam-do
    66
  133. 133BuyeoChungcheongnam-do
    66
  134. 134HwasunJeollanam-do
    65
  135. 135SeogwipoJeju-do
    63
  136. 136BeolgyoJeollanam-do
    63
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, March 2026, smogrank.com/kr/history/2026-03 (accessed 2 Oct 2026).

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