SmogRank / History / January 12, 2025

Most polluted cities on January 12, 2025

2,072 cities ranked by their average PM2.5 over the day; the worst was Kolkata, India, at 236.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 12, 2025. All episodes.

← Kolkata 236.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 12, 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. 1KolkataWest Bengal, India
    32215.7×
  2. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    27913.6×
  3. 3Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    27713.5×
  4. 4DushanbeDushanbe, Tajikistan
    24111.0×
  5. 5DelhiDelhi, India
    23010.3×
  6. 6Lahorelow-cost sensorsPunjab, Pakistan
    2068.7×
  7. 7CairoCairo, Egypt
    1978.1×
  8. 8N'DjamenaN’Djaména, Chad
    1967.9×
  9. 9MumbaiMaharashtra, India
    1947.8×
  10. 10Ulan BatorUlaanbaatar, Mongolia
    1937.7×
  11. 11Almatylow-cost sensorsAlmaty, Kazakhstan
    1897.3×
  12. 12Karachilow-cost sensorsSindh, Pakistan
    1897.3×
  13. 13Islamabadlow-cost sensorsIslamabad, Pakistan
    1856.9×
  14. 14SalorTashkent Region, Uzbekistan
    1826.6×
  15. 15ShenyangLiaoning, China
    1816.6×
  16. 16Lagoslow-cost sensorsLagos, Nigeria
    1725.7×
  17. 17Kampalalow-cost sensorsCentral Region, Uganda
    1705.5×
  18. 18HanoiHanoi, Vietnam
    1695.4×
  19. 19Abujalow-cost sensorsFCT, Nigeria
    1665.2×
  20. 20Kathmandulow-cost sensorsBagmati Province, Nepal
    1665.1×
  21. 21HyderabadTelangana, India
    1624.8×
  22. 22BaghdadBaghdad, Iraq
    1624.7×
  23. 23DhahranEastern Province, Saudi Arabia
    1554.1×
  24. 24LazarevacCentral Serbia, Serbia
    1523.8×
  25. 25BakuBaki, Azerbaijan
    1523.8×
  26. 26ShanghaiShanghai, China
    1463.6×
  27. 28ValjevoCentral Serbia, Serbia
    1453.5×
  28. 29Le HavreNormandy, France
    1443.5×
  29. 30KigaliKigali, Rwanda
    1413.4×
  30. 31CeljeUrban Municipality of Celje, Slovenia
    1293.1×
  31. 32Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1293.1×
  32. 33SremčicaCentral Serbia, Serbia
    1283.1×
  33. 34SmederevoCentral Serbia, Serbia
    1263.0×
  34. 35ChennaiTamil Nadu, India
    1243.0×
  35. 36KraljevoCentral Serbia, Serbia
    1222.9×
  36. 37BucharestBucharest, Romania
    1182.8×
  37. 37Novi PazarCentral Serbia, Serbia
    1182.8×
  38. 39RixensartWallonia, Belgium
    1182.8×
  39. 40Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1172.8×
  40. 41CodleaBrașov County, Romania
    1172.8×
  41. 42PirotCentral Serbia, Serbia
    1162.8×
  42. 43KragujevacCentral Serbia, Serbia
    1162.8×
  43. 44ObrenovacCentral Serbia, Serbia
    1142.7×
  44. 45PubalGyeonggi-do, South Korea
    1142.7×
  45. 46SeonghwanChungcheongnam-do, South Korea
    1122.7×
  46. 47GumiGyeongsangbuk-do, South Korea
    1072.5×
  47. 48HwadoGyeonggi-do, South Korea
    1052.5×
  48. 49YeojuGyeonggi-do, South Korea
    1042.5×
  49. 50Yangp'yŏngGyeonggi-do, South Korea
    1042.5×
  50. 51AsanChungcheongnam-do, South Korea
    1032.4×
  51. 52LondonEngland, United Kingdom
    1032.4×
  52. 53YeongjuGyeongsangbuk-do, South Korea
    1022.4×
  53. 54PančevoVojvodina, Serbia
    1022.4×
  54. 55SejongSejong-si, South Korea
    1002.4×
  55. 56Cheongju-siNorth Chungcheong, South Korea
    1002.3×
  56. 57AshgabatAshgabat, Turkmenistan
    992.3×
  57. 57PyeongtaekGyeonggi-do, South Korea
    992.3×
  58. 59YeongdongNorth Chungcheong, South Korea
    992.3×
  59. 60UžiceCentral Serbia, Serbia
    992.3×
  60. 61AthensAttica, Greece
    982.3×
  61. 62OkcheonNorth Chungcheong, South Korea
    982.3×
  62. 62Icheon-siGyeonggi-do, South Korea
    982.3×
  63. 64BelgradeCentral Serbia, Serbia
    972.3×
  64. 64YesanChungcheongnam-do, South Korea
    972.3×
  65. 66JungpyongNorth Chungcheong, South Korea
    972.3×
  66. 67ZemunCentral Serbia, Serbia
    972.2×
  67. 68NišCentral Serbia, Serbia
    962.2×
  68. 69CheonanChungcheongnam-do, South Korea
    952.2×
  69. 69AnseongGyeonggi-do, South Korea
    952.2×
  70. 71KinzanChungcheongnam-do, South Korea
    942.2×
  71. 71DouaiHauts-de-France, France
    942.2×
  72. 73ChuncheonGangwon-do, South Korea
    942.1×
  73. 74KranjUrban Municipality of Kranj, Slovenia
    932.1×
  74. 75ĆuprijaCentral Serbia, Serbia
    932.1×
  75. 76SuwonGyeonggi-do, South Korea
    932.1×
  76. 77WŏnjuGangwon-do, South Korea
    932.1×
  77. 77Hwaseong-siGyeonggi-do, South Korea
    932.1×
  78. 79OsanGyeonggi-do, South Korea
    922.1×
  79. 79PtujUrban Municipality of Ptuj, Slovenia
    922.1×
  80. 81ČačakCentral Serbia, Serbia
    922.1×
  81. 82MenenFlanders, Belgium
    912.0×
  82. 82GrimbergenFlanders, Belgium
    912.0×
  83. 84HwacheonGangwon-do, South Korea
    912.0×
  84. 85BrusselsBrussels Capital, Belgium
    912.0×
  85. 86ChungjuNorth Chungcheong, South Korea
    912.0×
  86. 86Chinch'ŏnNorth Chungcheong, South Korea
    912.0×
  87. 86YŏnmuChungcheongnam-do, South Korea
    912.0×
  88. 89BuyeoChungcheongnam-do, South Korea
    902.0×
  89. 89KoesanNorth Chungcheong, South Korea
    902.0×
  90. 89HongseongChungcheongnam-do, South Korea
    902.0×
  91. 92FredrikstadØstfold, Norway
    902.0×
  92. 92NacimientoBiobio, Chile
    902.0×
  93. 92ComptonCalifornia, United States
    902.0×
  94. 95TangjinChungcheongnam-do, South Korea
    902.0×
  95. 96Khlong Sam WaBangkok, Thailand
    892.0×
  96. 97GraysEngland, United Kingdom
    892.0×
  97. 97DenainHauts-de-France, France
    892.0×
  98. 99KortrijkFlanders, Belgium
    892.0×
  99. 100ZaventemFlanders, Belgium
    892.0×
  100. 101GwangjuGyeonggi-do, South Korea
    892.0×
  101. 102Guri-siGyeonggi-do, South Korea
    881.9×
  102. 102MonsWallonia, Belgium
    881.9×
  103. 104WaterfordMunster, Ireland
    881.9×
  104. 105MechelenFlanders, Belgium
    881.9×
  105. 105HasseltFlanders, Belgium
    881.9×
  106. 107YangonYangon, Myanmar
    871.9×
  107. 107SeoulSeoul, South Korea
    871.9×
  108. 107GimcheonGyeongsangbuk-do, South Korea
    871.9×
  109. 110DejCluj County, Romania
    871.9×
  110. 110HouthalenFlanders, Belgium
    871.9×
  111. 112AmmanAmman, Jordan
    871.9×
  112. 112FresnoCalifornia, United States
    871.9×
  113. 114IksanJeollabuk-do, South Korea
    871.9×
  114. 115SeosanChungcheongnam-do, South Korea
    871.9×
  115. 115GunsanJeollabuk-do, South Korea
    871.9×
  116. 115Bueng KumBangkok, Thailand
    871.9×
  117. 118Gyeongsan-siGyeongsangbuk-do, South Korea
    861.9×
  118. 119Nong KhaemBangkok, Thailand
    861.9×
  119. 119SangjuGyeongsangbuk-do, South Korea
    861.9×
  120. 119Hongch’ŏnGangwon-do, South Korea
    861.9×
  121. 122Ansan-siGyeonggi-do, South Korea
    861.9×
  122. 122GwangmyeongGyeonggi-do, South Korea
    861.9×
  123. 124Tuen MunTuen Mun, Hong Kong
    851.8×
  124. 124Bucheon-siGyeonggi-do, South Korea
    851.8×
  125. 124BuanJeollabuk-do, South Korea
    851.8×
  126. 124DagenhamEngland, United Kingdom
    851.8×
  127. 124IzegemFlanders, Belgium
    851.8×
  128. 129KimjeJeollabuk-do, South Korea
    851.8×
  129. 129IncheonIncheon, South Korea
    851.8×
  130. 131Anyang-siGyeonggi-do, South Korea
    851.8×
  131. 131Lat KrabangBangkok, Thailand
    851.8×
  132. 133WaegwanGyeongsangbuk-do, South Korea
    851.8×
  133. 133MunsanGyeonggi-do, South Korea
    851.8×
  134. 135GuangzhouGuangdong, China
    851.8×
  135. 135LillestrømAkershus, Norway
    851.8×
  136. 135HanfordCalifornia, United States
    851.8×
  137. 138Goyang-siGyeonggi-do, South Korea
    851.8×
  138. 138Gimpo-siGyeonggi-do, South Korea
    851.8×
  139. 138Lak SiBangkok, Thailand
    851.8×
  140. 141Bang NaBangkok, Thailand
    841.8×
  141. 141KunwiGyeongsangbuk-do, South Korea
    841.8×
  142. 143ChangsuJeollabuk-do, South Korea
    841.8×
  143. 144Seongnam-siGyeonggi-do, South Korea
    841.8×
  144. 144HanamGyeonggi-do, South Korea
    841.8×
  145. 146Uijeongbu-siGyeonggi-do, South Korea
    841.8×
  146. 146Ganghwa-gunIncheon, South Korea
    841.8×
  147. 148NangenJeollabuk-do, South Korea
    841.8×
  148. 149ImsilJeollabuk-do, South Korea
    831.8×
  149. 149Saphan SungBangkok, Thailand
    831.8×
  150. 151NonsanChungcheongnam-do, South Korea
    831.8×
  151. 151ValenciennesHauts-de-France, France
    831.8×
  152. 153BoryeongChungcheongnam-do, South Korea
    831.7×
  153. 154WanjuJeollabuk-do, South Korea
    821.7×
  154. 154HeerlenLimburg, The Netherlands
    821.7×
  155. 156AndongGyeongsangbuk-do, South Korea
    821.7×
  156. 157Istanbullow-cost sensorsIstanbul, Turkey
    821.7×
  157. 157NajuJeollanam-do, South Korea
    821.7×
  158. 159JülichNorth Rhine-Westphalia, Germany
    821.7×
  159. 160Jinan-gunJeollabuk-do, South Korea
    821.7×
  160. 160Khan Na YaoBangkok, Thailand
    821.7×
  161. 162Mueang NonthaburiNonthaburi, Thailand
    821.7×
  162. 162GapyeongGyeonggi-do, South Korea
    821.7×
  163. 162AarschotFlanders, Belgium
    821.7×
  164. 165ChiguayanteBiobio, Chile
    811.7×
  165. 166DaeguDaegu, South Korea
    811.7×
  166. 166WillebroekFlanders, Belgium
    811.7×
  167. 166FutogVojvodina, Serbia
    811.7×
  168. 169YangjuGyeonggi-do, South Korea
    811.7×
  169. 169MossØstfold, Norway
    811.7×
  170. 169Novo MestoUrban Municipality of Novo Mesto, Slovenia
    811.7×
  171. 169Sai MaiBangkok, Thailand
    811.7×
  172. 173JinchengFukien, Taiwan
    811.7×
  173. 174CharleroiWallonia, Belgium
    801.7×
  174. 175BexleyEngland, United Kingdom
    801.7×
  175. 176NeietsuGangwon-do, South Korea
    801.6×
  176. 176TocopillaAntofagasta, Chile
    801.6×
  177. 178GongjuChungcheongnam-do, South Korea
    801.6×
  178. 178TrbovljeMunicipality of Trbovlje, Slovenia
    801.6×
  179. 180EupenWallonia, Belgium
    791.6×
  180. 181PoriSatakunta, Finland
    791.6×
  181. 181YeonggwangJeollanam-do, South Korea
    791.6×
  182. 181KölnNorth Rhine-Westphalia, Germany
    791.6×
  183. 184YeonilGyeongsangbuk-do, South Korea
    791.6×
  184. 184CheorwonGangwon-do, South Korea
    791.6×
  185. 184WabuGyeonggi-do, South Korea
    791.6×
  186. 184HwawŏnDaegu, South Korea
    791.6×
  187. 188AndenneWallonia, Belgium
    791.6×
  188. 189NamyangjuGyeonggi-do, South Korea
    781.6×
  189. 189LeverkusenNorth Rhine-Westphalia, Germany
    781.6×
  190. 189JüchenNorth Rhine-Westphalia, Germany
    781.6×
  191. 192HualquiBiobio, Chile
    781.6×
  192. 193MungyeongGyeongsangbuk-do, South Korea
    781.6×
  193. 193BonnNorth Rhine-Westphalia, Germany
    781.6×
  194. 195HayangGyeongsangbuk-do, South Korea
    781.6×
  195. 196BangkokBangkok, Thailand
    771.6×
  196. 196LiègeWallonia, Belgium
    771.6×
  197. 196Boulogne-sur-MerHauts-de-France, France
    771.6×
  198. 199JeonjuJeollabuk-do, South Korea
    771.5×
  199. 200PohangGyeongsangbuk-do, South Korea
    771.5×

Top 200 of 2,072 shown.

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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, January 12, 2025, smogrank.com/history/2025-01-12 (accessed 2 Oct 2026).

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