SmogRank / World / South Korea / May 2026

Most polluted cities in South Korea, May 2026

135 cities in South Korea ranked by their average PM2.5 over the 31 days. Worst: Miryang at 473.5 µg/m³, #1 of 2,522 cities in the world. Cleanest: Gijang at 12.5. A city needs measurements on 70% of the days to be ranked.

← Miryang 473.5 µg/m³ 400 µg/m³0
Every city in South Korea ranked for May 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. 1MiryangGyeongsangnam-do
    500+
  2. 2HwasunJeollanam-do
    500+
  3. 3HadongGyeongsangnam-do
    339
  4. 4SejongSejong-si
    324
  5. 5SinhyeonGyeongsangnam-do
    305
  6. 6TongyeongGyeongsangnam-do
    284
  7. 7SeogwipoJeju-do
    280
  8. 8HongseongChungcheongnam-do
    280
  9. 9SeosanChungcheongnam-do
    250
  10. 10TangjinChungcheongnam-do
    248
  11. 11AnseongGyeonggi-do
    238
  12. 12Taesal-liChungcheongnam-do
    236
  13. 13DaejeonDaejeon
    236
  14. 14ChangsuJeollabuk-do
    229
  15. 15BoryeongChungcheongnam-do
    224
  16. 16HwawŏnDaegu
    224
  17. 17MunsanGyeonggi-do
    223
  18. 18BuyeoChungcheongnam-do
    222
  19. 19KunwiGyeongsangbuk-do
    222
  20. 20GapyeongGyeonggi-do
    221
  21. 21NamsaJeollabuk-do
    219
  22. 22WanjuJeollabuk-do
    215
  23. 23T’aebaekGangwon-do
    214
  24. 24KimjeJeollabuk-do
    213
  25. 25GeojeGyeongsangnam-do
    213
  26. 26ImsilJeollabuk-do
    212
  27. 26JungpyongNorth Chungcheong
    212
  28. 28Jinan-gunJeollabuk-do
    210
  29. 29GangneungGangwon-do
    206
  30. 30SeonghwanChungcheongnam-do
    204
  31. 31PubalGyeonggi-do
    201
  32. 32Koch'angJeollabuk-do
    201
  33. 33BuanJeollabuk-do
    201
  34. 34BeolgyoJeollanam-do
    199
  35. 35KinzanChungcheongnam-do
    199
  36. 36YangsanGyeongsangnam-do
    197
  37. 37JeonjuJeollabuk-do
    197
  38. 37Cheongju-siNorth Chungcheong
    197
  39. 39GoseongGyeongsangnam-do
    196
  40. 40GaigeturiJeju-do
    196
  41. 41JeongeupJeollabuk-do
    194
  42. 42DamyangJeollanam-do
    193
  43. 43Yangp'yŏngGyeonggi-do
    193
  44. 43NonsanChungcheongnam-do
    193
  45. 45HwadoGyeonggi-do
    190
  46. 46Hwaseong-siGyeonggi-do
    190
  47. 46YŏnmuChungcheongnam-do
    190
  48. 48YangjuGyeonggi-do
    188
  49. 49GongjuChungcheongnam-do
    187
  50. 50OkcheonNorth Chungcheong
    187
  51. 51YesanChungcheongnam-do
    187
  52. 52Ganghwa-gunIncheon
    184
  53. 53KosongGangwon-do
    183
  54. 54Chinch'ŏnNorth Chungcheong
    183
  55. 55PyeongtaekGyeonggi-do
    180
  56. 56SinanJeollanam-do
    180
  57. 57YeongdongNorth Chungcheong
    180
  58. 58SantyokuGangwon-do
    178
  59. 59GunsanJeollabuk-do
    177
  60. 60BoseongJeollanam-do
    177
  61. 61YeojuGyeonggi-do
    177
  62. 62HaenamJeollanam-do
    176
  63. 63JumunjinGangwon-do
    176
  64. 64MuanJeollanam-do
    173
  65. 65AsanChungcheongnam-do
    172
  66. 66SangjuGyeongsangbuk-do
    171
  67. 67NajuJeollanam-do
    171
  68. 68HayangGyeongsangbuk-do
    170
  69. 69Icheon-siGyeonggi-do
    170
  70. 70JangheungJeollanam-do
    170
  71. 71Hongch’ŏnGangwon-do
    169
  72. 72NamyangjuGyeonggi-do
    169
  73. 73JangseongJeollanam-do
    168
  74. 74IksanJeollabuk-do
    167
  75. 75Cheongsong gunGyeongsangbuk-do
    167
  76. 76HwacheonGangwon-do
    166
  77. 77KoesanNorth Chungcheong
    165
  78. 78ChungjuNorth Chungcheong
    164
  79. 79WaegwanGyeongsangbuk-do
    161
  80. 80CheorwonGangwon-do
    161
  81. 81EisenGyeongsangbuk-do
    160
  82. 82ChinjuGyeongsangnam-do
    160
  83. 83YecheonGyeongsangbuk-do
    159
  84. 84Jeju CityJeju-do
    158
  85. 85NeietsuGangwon-do
    158
  86. 86YangguGangwon-do
    157
  87. 87MasanGwangju
    156
  88. 88ChuncheonGangwon-do
    152
  89. 89CheonanChungcheongnam-do
    152
  90. 90SokchoGangwon-do
    149
  91. 91GwangjuGyeonggi-do
    148
  92. 92YeongamJeollanam-do
    145
  93. 93SuncheonJeollanam-do
    144
  94. 94MungyeongGyeongsangbuk-do
    143
  95. 95NangenJeollabuk-do
    137
  96. 96KuryeJeollanam-do
    137
  97. 97Goyang-siGyeonggi-do
    136
  98. 98YeongjuGyeongsangbuk-do
    135
  99. 99AndongGyeongsangbuk-do
    127
  100. 100KwangyangJeollanam-do
    126
  101. 101UlsanUlsan
    123
  102. 102GwangmyeongGyeonggi-do
    121
  103. 103YeonilGyeongsangbuk-do
    120
  104. 104Bucheon-siGyeonggi-do
    118
  105. 104HanamGyeonggi-do
    118
  106. 106Guri-siGyeonggi-do
    118
  107. 107YeonggwangJeollanam-do
    116
  108. 108GwangyangJeollanam-do
    110
  109. 109MokpoJeollanam-do
    97
  110. 110UngsangGyeongsangnam-do
    93
  111. 111GyeongjuGyeongsangbuk-do
    93
  112. 112SeoulSeoul
    90
  113. 113Anyang-siGyeonggi-do
    89
  114. 114SuwonGyeonggi-do
    88
  115. 115Uijeongbu-siGyeonggi-do
    88
  116. 116WŏnjuGangwon-do
    86
  117. 117ChangnyeongGyeongsangnam-do
    82
  118. 118YeosuJeollanam-do
    81
  119. 119GimcheonGyeongsangbuk-do
    74
  120. 120Gimpo-siGyeonggi-do
    67
  121. 121IncheonIncheon
    66
  122. 122Ansan-siGyeonggi-do
    65
  123. 123OsanGyeonggi-do
    64
  124. 124PohangGyeongsangbuk-do
    62
  125. 125Gyeongsan-siGyeongsangbuk-do
    62
  126. 126BusanBusan
    62
  127. 127Donghae CityGangwon-do
    62
  128. 128GumiGyeongsangbuk-do
    61
  129. 129GwangjuGwangju
    61
  130. 130Seongnam-siGyeonggi-do
    60
  131. 131KimhaeGyeongsangnam-do
    59
  132. 132ChangwonGyeongsangnam-do
    59
  133. 133DaeguDaegu
    59
  134. 134NaesŏGyeongsangnam-do
    58
  135. 135GijangBusan
    57
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, May 2026 · South Korea now

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SmogRank, most polluted cities in South Korea, PM2.5, May 2026, smogrank.com/kr/history/2026-05 (accessed 2 Oct 2026).

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