SmogRank / History / January 16, 2025

Most polluted cities on January 16, 2025

1,705 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 277.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 16, 2025. All episodes.

← N'Djamena 277.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 16, 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. 1N'DjamenaN’Djaména, Chad
    40418.5×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    33616.2×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    26812.9×
  4. 4Ulan BatorUlaanbaatar, Mongolia
    26212.5×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    25712.1×
  6. 6DushanbeDushanbe, Tajikistan
    23510.7×
  7. 6DelhiDelhi, India
    23510.7×
  8. 8KolkataWest Bengal, India
    23010.3×
  9. 9Karachilow-cost sensorsSindh, Pakistan
    2159.3×
  10. 10Kampalalow-cost sensorsCentral Region, Uganda
    2129.1×
  11. 11SalorTashkent Region, Uzbekistan
    1877.1×
  12. 12Abujalow-cost sensorsFCT, Nigeria
    1826.6×
  13. 13MumbaiMaharashtra, India
    1796.3×
  14. 14BaghdadBaghdad, Iraq
    1786.3×
  15. 15Kathmandulow-cost sensorsBagmati Province, Nepal
    1756.0×
  16. 16HanoiHanoi, Vietnam
    1735.8×
  17. 17Islamabadlow-cost sensorsIslamabad, Pakistan
    1715.6×
  18. 18Yerevanlow-cost sensorsYerevan, Armenia
    1665.2×
  19. 19LazarevacCentral Serbia, Serbia
    1645.0×
  20. 20SarajevoFederation of B&H, Bosnia and Herzegovina
    1644.9×
  21. 21HyderabadTelangana, India
    1634.8×
  22. 22ChennaiTamil Nadu, India
    1604.6×
  23. 23DhahranEastern Province, Saudi Arabia
    1594.5×
  24. 24ConakryConakry, Guinea
    1564.2×
  25. 25Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1554.0×
  26. 26Dimitrovgradlow-cost sensorsHaskovo, Bulgaria
    1503.7×
  27. 27SremčicaCentral Serbia, Serbia
    1483.6×
  28. 28Cluj-NapocaCluj County, Romania
    1473.6×
  29. 29Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    1473.6×
  30. 30CairoCairo, Egypt
    1363.3×
  31. 31MiskolcBorsod-Abaúj-Zemplén, Hungary
    1353.3×
  32. 31Wan ChaiWan Chai, Hong Kong
    1353.3×
  33. 33Tuen MunTuen Mun, Hong Kong
    1343.3×
  34. 34BadgerAlaska, United States
    1343.3×
  35. 35Lagoslow-cost sensorsLagos, Nigeria
    1333.2×
  36. 36NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    1273.1×
  37. 37DrammenBuskerud, Norway
    1243.0×
  38. 38ZemunCentral Serbia, Serbia
    1222.9×
  39. 38Mong KokYau Tsim Mong District, Hong Kong
    1222.9×
  40. 40ObrenovacCentral Serbia, Serbia
    1202.9×
  41. 41San Tung Chung HangIslands, Hong Kong
    1182.8×
  42. 42Haskovolow-cost sensorsHaskovo, Bulgaria
    1172.8×
  43. 42Tin Shui WaiYuen Long, Hong Kong
    1172.8×
  44. 44Tai PoTai Po, Hong Kong
    1152.7×
  45. 45Kwai ChungKwai Tsing District, Hong Kong
    1142.7×
  46. 46JinchengFukien, Taiwan
    1142.7×
  47. 46VictoriaCentral and Western, Hong Kong
    1142.7×
  48. 48Banja LukaSrpska, Bosnia and Herzegovina
    1132.7×
  49. 49Accralow-cost sensorsGreater Accra, Ghana
    1132.7×
  50. 50Sham Shui PoSham Shui Po District, Hong Kong
    1122.7×
  51. 50ŻywiecSilesia, Poland
    1122.7×
  52. 52Gabrovolow-cost sensorsGabrovo, Bulgaria
    1112.6×
  53. 53GyőrGyőr-Moson-Sopron, Hungary
    1102.6×
  54. 54Nong KhaemBangkok, Thailand
    1102.6×
  55. 55Sha TinSha Tin, Hong Kong
    1092.6×
  56. 56EsztergomKomárom-Esztergom, Hungary
    1092.6×
  57. 56Khlong Sam WaBangkok, Thailand
    1092.6×
  58. 58Tsuen WanTsuen Wan, Hong Kong
    1082.6×
  59. 59Sau Mau PingKwun Tong District, Hong Kong
    1082.6×
  60. 60ZgierzŁódź Voivodeship, Poland
    1072.5×
  61. 61Lak SiBangkok, Thailand
    1072.5×
  62. 62LubańLower Silesia, Poland
    1072.5×
  63. 63Botevgradlow-cost sensorsSofia, Bulgaria
    1062.5×
  64. 64BangkokBangkok, Thailand
    1062.5×
  65. 64ChaozhouTaiwan, Taiwan
    1062.5×
  66. 66Bang NaBangkok, Thailand
    1052.5×
  67. 66FanlingNorth District, Hong Kong
    1052.5×
  68. 68Saphan SungBangkok, Thailand
    1052.5×
  69. 69OtwockMazovia, Poland
    1052.5×
  70. 70Lat KrabangBangkok, Thailand
    1052.5×
  71. 71ShanghaiShanghai, China
    1042.5×
  72. 72BelgradeCentral Serbia, Serbia
    1042.4×
  73. 73PančevoVojvodina, Serbia
    1032.4×
  74. 74YangonYangon, Myanmar
    1032.4×
  75. 75KigaliKigali, Rwanda
    1022.4×
  76. 75Ban Samae DamBangkok, Thailand
    1022.4×
  77. 77Khan Na YaoBangkok, Thailand
    1012.4×
  78. 78JeddahMecca Region, Saudi Arabia
    1012.4×
  79. 79Mueang NonthaburiNonthaburi, Thailand
    1012.4×
  80. 80Bueng KumBangkok, Thailand
    1002.4×
  81. 81CraiovaDolj, Romania
    992.3×
  82. 82GuangzhouGuangdong, China
    982.3×
  83. 83Sai MaiBangkok, Thailand
    972.3×
  84. 84KłodzkoLower Silesia, Poland
    972.2×
  85. 85Bang KapiBangkok, Thailand
    962.2×
  86. 86FengshanTakao, Taiwan
    952.2×
  87. 87AshgabatAshgabat, Turkmenistan
    952.2×
  88. 87SzegedCsongrád, Hungary
    952.2×
  89. 87XonacatlánMéxico, Mexico
    952.2×
  90. 90San Salvador TizatlalliMéxico, Mexico
    942.1×
  91. 91Istanbullow-cost sensorsIstanbul, Turkey
    932.1×
  92. 92Ban Khlong PrawetBangkok, Thailand
    932.1×
  93. 93Nong ChokBangkok, Thailand
    922.1×
  94. 94KaohsiungTakao, Taiwan
    902.0×
  95. 95MillcreekUtah, United States
    902.0×
  96. 96IaşiIași County, Romania
    892.0×
  97. 98LillehammerInnlandet, Norway
    881.9×
  98. 98HualpénBiobio, Chile
    881.9×
  99. 100Ciudad NezahualcoyotlMéxico, Mexico
    861.9×
  100. 101Sevlievolow-cost sensorsGabrovo, Bulgaria
    861.9×
  101. 101ConwaySouth Carolina, United States
    861.9×
  102. 103HanfordCalifornia, United States
    861.9×
  103. 104Ecatepec de MorelosMéxico, Mexico
    851.8×
  104. 105San Francisco TlalcilalcalpanMéxico, Mexico
    851.8×
  105. 106FresnoCalifornia, United States
    841.8×
  106. 107PorsgrunnTelemark, Norway
    831.8×
  107. 108Bielsko-BialaSilesia, Poland
    831.8×
  108. 109ShenyangLiaoning, China
    821.7×
  109. 109Naucalpan de JuárezMéxico, Mexico
    821.7×
  110. 111Jastrzębie ZdrójSilesia, Poland
    821.7×
  111. 112West JordanUtah, United States
    811.7×
  112. 113Kędzierzyn-KoźleOpole Voivodeship, Poland
    811.7×
  113. 114DębicaSubcarpathia, Poland
    801.6×
  114. 114MedfordOregon, United States
    801.6×
  115. 116BucharestBucharest, Romania
    801.6×
  116. 116AricaArica y Parinacota Region, Chile
    801.6×
  117. 118IrapuatoGuanajuato, Mexico
    791.6×
  118. 119WolfsbergCarinthia, Austria
    781.6×
  119. 119Czechowice-DziedziceSilesia, Poland
    781.6×
  120. 121PubalGyeonggi-do, South Korea
    781.6×
  121. 122Tepeji del Río de OcampoHidalgo, Mexico
    781.6×
  122. 122ChiguayanteBiobio, Chile
    781.6×
  123. 124GrazStyria, Austria
    771.5×
  124. 124KrotoszynGreater Poland, Poland
    771.5×
  125. 126Salt Lake CityUtah, United States
    771.5×
  126. 127TijuanaBaja California, Mexico
    771.5×
  127. 128Asunciónlow-cost sensorsAsuncion, Paraguay
    761.5×
  128. 129MagnaUtah, United States
    761.5×
  129. 130Yangp'yŏngGyeonggi-do, South Korea
    761.5×
  130. 131GumiGyeongsangbuk-do, South Korea
    751.5×
  131. 132Silao de la VictoriaGuanajuato, Mexico
    751.5×
  132. 133WindsorOntario, Canada
    751.5×
  133. 134KutnoŁódź Voivodeship, Poland
    751.5×
  134. 134RedfordMichigan, United States
    751.5×
  135. 136Klagenfurt am WörtherseeCarinthia, Austria
    751.5×
  136. 136RacibórzSilesia, Poland
    751.5×
  137. 136KrakówLesser Poland, Poland
    751.5×
  138. 139ModestoCalifornia, United States
    741.4×
  139. 140Ganghwa-gunIncheon, South Korea
    741.4×
  140. 141HoustonTexas, United States
    741.4×
  141. 141BountifulUtah, United States
    741.4×
  142. 143Addis AbabaAddis Ababa, Ethiopia
    741.4×
  143. 143TocopillaAntofagasta, Chile
    741.4×
  144. 145RzeszówSubcarpathia, Poland
    741.4×
  145. 146YeongjuGyeongsangbuk-do, South Korea
    731.4×
  146. 147Mexico CityMexico City, Mexico
    731.4×
  147. 148BogotáBogota D.C., Colombia
    721.4×
  148. 148MantecaCalifornia, United States
    721.4×
  149. 150HwadoGyeonggi-do, South Korea
    721.4×
  150. 150ToledoOhio, United States
    721.4×
  151. 152The HagueSouth Holland, The Netherlands
    721.4×
  152. 152OpoleOpole Voivodeship, Poland
    721.4×
  153. 152ConcónValparaiso, Chile
    721.4×
  154. 155PécsBaranya, Hungary
    721.4×
  155. 155CorcoranCalifornia, United States
    721.4×
  156. 157BeijingBeijing, China
    721.3×
  157. 157OregonOhio, United States
    721.3×
  158. 157West Valley CityUtah, United States
    721.3×
  159. 160Viña del MarValparaiso, Chile
    711.3×
  160. 161KoesanNorth Chungcheong, South Korea
    711.3×
  161. 162Icheon-siGyeonggi-do, South Korea
    711.3×
  162. 163WŏnjuGangwon-do, South Korea
    711.3×
  163. 164SeonghwanChungcheongnam-do, South Korea
    711.3×
  164. 164IncheonIncheon, South Korea
    711.3×
  165. 166KatowiceSilesia, Poland
    711.3×
  166. 167YeojuGyeonggi-do, South Korea
    701.3×
  167. 167Puente AltoSantiago Metropolitan, Chile
    701.3×
  168. 170ColomboWestern Province, Sri Lanka
    701.3×
  169. 170MunsanGyeonggi-do, South Korea
    701.3×
  170. 172PyeongtaekGyeonggi-do, South Korea
    701.3×
  171. 173Bucheon-siGyeonggi-do, South Korea
    691.3×
  172. 173CheorwonGangwon-do, South Korea
    691.3×
  173. 175TainanTaiwan, Taiwan
    691.3×
  174. 175SeoulSeoul, South Korea
    691.3×
  175. 178YongkangTaiwan, Taiwan
    691.3×
  176. 178Gimpo-siGyeonggi-do, South Korea
    691.3×
  177. 178BerkeleyCalifornia, United States
    691.3×
  178. 181SuwonGyeonggi-do, South Korea
    691.2×
  179. 181QuillotaValparaiso, Chile
    691.2×
  180. 181DearbornMichigan, United States
    691.2×
  181. 184KrosnoSubcarpathia, Poland
    691.2×
  182. 184AntananarivoAnalamanga, Madagascar
    691.2×
  183. 184KlosterneuburgLower Austria, Austria
    691.2×
  184. 184AnsfeldenUpper Austria, Austria
    691.2×
  185. 188AugustówPodlasie, Poland
    681.2×
  186. 188GwangjuGyeonggi-do, South Korea
    681.2×
  187. 188Goyang-siGyeonggi-do, South Korea
    681.2×
  188. 188Belle GladeFlorida, United States
    681.2×
  189. 192OaklandCalifornia, United States
    681.2×
  190. 193BarneveldGelderland, The Netherlands
    681.2×
  191. 194DouliuTaiwan, Taiwan
    681.2×
  192. 194Hwaseong-siGyeonggi-do, South Korea
    681.2×
  193. 194La SerenaCoquimbo Region, Chile
    681.2×
  194. 194BirminghamAlabama, United States
    681.2×
  195. 198ZhushanTaiwan, Taiwan
    681.2×
  196. 198Ansan-siGyeonggi-do, South Korea
    681.2×
  197. 198GwangmyeongGyeonggi-do, South Korea
    681.2×

Top 200 of 1,705 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

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SmogRank, most polluted cities, PM2.5, January 16, 2025, smogrank.com/history/2025-01-16 (accessed 2 Oct 2026).

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