SmogRank / History / January 6, 2023

Most polluted cities on January 6, 2023

1,182 cities ranked by their average PM2.5 over the day; the worst was Addis Ababa, Ethiopia, at 499.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 6, 2023. All episodes.

← Addis Ababa 499.0 µg/m³ 400 µg/m³15 WHO 24-hour guideline
Every city ranked for January 6, 2023, 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. 1Addis AbabaAddis Ababa, Ethiopia
    500+33.3×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    500+26.2×
  3. 3DelhiDelhi, India
    47120.7×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    41818.9×
  5. 5N'DjamenaN’Djaména, Chad
    34216.4×
  6. 6Dhakalow-cost sensorsDhaka Division, Bangladesh
    29914.9×
  7. 7Abujalow-cost sensorsFCT, Nigeria
    26312.5×
  8. 8Banja LukaSrpska, Bosnia and Herzegovina
    2219.7×
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    2179.4×
  10. 10PodgoricaPodgorica, Montenegro
    2018.4×
  11. 11PljevljaPljevlja, Montenegro
    1978.1×
  12. 12HyderabadTelangana, India
    1937.7×
  13. 13BitolaBitola, North Macedonia
    1927.6×
  14. 14MumbaiMaharashtra, India
    1867.1×
  15. 15VolosThessaly, Greece
    1796.4×
  16. 16Kathmandulow-cost sensorsBagmati Province, Nepal
    1776.1×
  17. 17AlexandriaAlexandria, Egypt
    1745.9×
  18. 18BamakoBamako, Mali
    1705.5×
  19. 19Accralow-cost sensorsGreater Accra, Ghana
    1705.5×
  20. 20ShanghaiShanghai, China
    1685.3×
  21. 21NišCentral Serbia, Serbia
    1594.5×
  22. 22BaghdadBaghdad, Iraq
    1584.4×
  23. 23BeijingBeijing, China
    1574.3×
  24. 24Karachilow-cost sensorsSindh, Pakistan
    1564.1×
  25. 25PristinaPristina, Kosovo
    1544.0×
  26. 26Kampalalow-cost sensorsCentral Region, Uganda
    1513.7×
  27. 27eMkhomaziKwaZulu-Natal, South Africa
    1503.7×
  28. 28HanoiHanoi, Vietnam
    1393.4×
  29. 29Villa Poeta José Gálvez BarrenecheaLima region, Peru
    1212.9×
  30. 30AthensAttica, Greece
    1142.7×
  31. 31BadgerAlaska, United States
    1092.6×
  32. 32YangonYangon, Myanmar
    1032.4×
  33. 33KigaliKigali, Rwanda
    1022.4×
  34. 34LamphunLamphun, Thailand
    962.2×
  35. 35SukhothaiSukhothai, Thailand
    952.2×
  36. 36RatchaburiRatchaburi, Thailand
    952.2×
  37. 37GuangzhouGuangdong, China
    952.2×
  38. 38PiraeusAttica, Greece
    932.1×
  39. 39SalorTashkent Region, Uzbekistan
    932.1×
  40. 40LimaLima Province, Peru
    912.0×
  41. 40Khlong Sam WaBangkok, Thailand
    912.0×
  42. 42BakuBaki, Azerbaijan
    912.0×
  43. 42Hua HinPrachuap Khiri Khan, Thailand
    912.0×
  44. 44Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    902.0×
  45. 45PátraWest Greece, Greece
    892.0×
  46. 46Nong KhaemBangkok, Thailand
    881.9×
  47. 47NanNan, Thailand
    881.9×
  48. 48Almatylow-cost sensorsAlmaty, Kazakhstan
    871.9×
  49. 49Ga-RankuwaNorth West, South Africa
    871.9×
  50. 50Grande PrairieAlberta, Canada
    861.9×
  51. 50Khan Na YaoBangkok, Thailand
    861.9×
  52. 52Mae SotTak, Thailand
    861.9×
  53. 52Naucalpan de JuárezMéxico, Mexico
    861.9×
  54. 54Samut SakhonSamut Sakhon, Thailand
    861.8×
  55. 54ThorntonColorado, United States
    861.8×
  56. 56BelgradeCentral Serbia, Serbia
    851.8×
  57. 57Tin Shui WaiYuen Long, Hong Kong
    851.8×
  58. 58PhichitPhichit, Thailand
    851.8×
  59. 59SliemaTas-Sliema, Malta
    831.8×
  60. 60TocopillaAntofagasta, Chile
    831.7×
  61. 61Bueng KumBangkok, Thailand
    821.7×
  62. 62AcharnésAttica, Greece
    821.7×
  63. 63Bang Khun ThianBangkok, Thailand
    821.7×
  64. 64Bang NaBangkok, Thailand
    811.7×
  65. 65CuranilahueBiobio, Chile
    801.7×
  66. 66Wan ChaiWan Chai, Hong Kong
    801.6×
  67. 67ValdemoroMadrid, Spain
    791.6×
  68. 68PhayaoPhayao, Thailand
    791.6×
  69. 68SantiagoSantiago Metropolitan, Chile
    791.6×
  70. 68PhoenixArizona, United States
    791.6×
  71. 71AshgabatAshgabat, Turkmenistan
    781.6×
  72. 71Bang KapiBangkok, Thailand
    781.6×
  73. 73ColomboWestern Province, Sri Lanka
    781.6×
  74. 73SatunSatun, Thailand
    781.6×
  75. 73BarBar, Montenegro
    781.6×
  76. 76ParedesPorto, Portugal
    781.6×
  77. 76Puente AltoSantiago Metropolitan, Chile
    781.6×
  78. 76West FargoNorth Dakota, United States
    781.6×
  79. 76FairbanksAlaska, United States
    781.6×
  80. 80PhraePhrae, Thailand
    781.6×
  81. 80Mexico CityMexico City, Mexico
    781.6×
  82. 82WolfsbergCarinthia, Austria
    771.6×
  83. 83SallanchesAuvergne-Rhône-Alpes, France
    771.5×
  84. 83Ciudad JuárezChihuahua, Mexico
    771.5×
  85. 83Grand IslandNebraska, United States
    771.5×
  86. 83YakimaWashington, United States
    771.5×
  87. 87Kwai ChungKwai Tsing District, Hong Kong
    771.5×
  88. 88Botevgradlow-cost sensorsSofia, Bulgaria
    771.5×
  89. 88Nakhon SawanNakhon Sawan, Thailand
    771.5×
  90. 90LoeiLoei, Thailand
    761.5×
  91. 90TurinPiedmont, Italy
    761.5×
  92. 92Ban Samae DamBangkok, Thailand
    761.5×
  93. 92Viña del MarValparaiso, Chile
    761.5×
  94. 94ModugnoApulia, Italy
    761.5×
  95. 94Saint-Jean-sur-RichelieuQuebec, Canada
    761.5×
  96. 94Saphan SungBangkok, Thailand
    761.5×
  97. 97LampangLampang, Thailand
    761.5×
  98. 98KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    761.5×
  99. 99ShakopeeMinnesota, United States
    751.5×
  100. 99DorvalQuebec, Canada
    751.5×
  101. 101DenverColorado, United States
    751.5×
  102. 102Nakhon PathomNakhon Pathom, Thailand
    751.5×
  103. 102QuinteroValparaiso, Chile
    751.5×
  104. 102CuricóMaule Region, Chile
    751.5×
  105. 102Saint MichaelMinnesota, United States
    751.5×
  106. 106ButteMontana, United States
    751.5×
  107. 107ThessaloníkiCentral Macedonia, Greece
    741.4×
  108. 107Hat YaiSongkhla, Thailand
    741.4×
  109. 107TalaganteSantiago Metropolitan, Chile
    741.4×
  110. 110KłodzkoLower Silesia, Poland
    741.4×
  111. 110NacimientoBiobio, Chile
    741.4×
  112. 112Mong KokYau Tsim Mong District, Hong Kong
    741.4×
  113. 113RancaguaO'Higgins Region, Chile
    741.4×
  114. 114Falconara MarittimaThe Marches, Italy
    741.4×
  115. 114HualpénBiobio, Chile
    741.4×
  116. 116AsprópyrgosAttica, Greece
    731.4×
  117. 116Tsuen WanTsuen Wan, Hong Kong
    731.4×
  118. 116MontréalQuebec, Canada
    731.4×
  119. 119Tha YangPhetchaburi, Thailand
    731.4×
  120. 119FanlingNorth District, Hong Kong
    731.4×
  121. 121BangkokBangkok, Thailand
    731.4×
  122. 121Lak SiBangkok, Thailand
    731.4×
  123. 123UttaraditUttaradit, Thailand
    721.4×
  124. 124Chiang RaiChiang Rai, Thailand
    721.4×
  125. 124Ecatepec de MorelosMéxico, Mexico
    721.4×
  126. 126Collado-VillalbaMadrid, Spain
    721.4×
  127. 126TrentoTrentino-Alto Adige, Italy
    721.4×
  128. 126San CarlosÑuble, Chile
    721.4×
  129. 129LotaBiobio, Chile
    721.4×
  130. 130Ban Khlong PrawetBangkok, Thailand
    721.3×
  131. 131RengoO'Higgins Region, Chile
    711.3×
  132. 132Mueang NonthaburiNonthaburi, Thailand
    711.3×
  133. 132ŚwiecieKujawsko-Pomorskie, Poland
    711.3×
  134. 132Lat KrabangBangkok, Thailand
    711.3×
  135. 135WatertownSouth Dakota, United States
    711.3×
  136. 136Haskovolow-cost sensorsHaskovo, Bulgaria
    711.3×
  137. 136Mae SaiChiang Rai, Thailand
    711.3×
  138. 136Chiang MaiChiang Mai, Thailand
    711.3×
  139. 139Sha TinSha Tin, Hong Kong
    711.3×
  140. 139LęborkPomerania, Poland
    711.3×
  141. 139AricaArica y Parinacota Region, Chile
    711.3×
  142. 142SaraburiSaraburi, Thailand
    701.3×
  143. 142MóstolesMadrid, Spain
    701.3×
  144. 144Apple ValleyMinnesota, United States
    701.3×
  145. 144San Pedro de la PazBiobio, Chile
    701.3×
  146. 146ConcónValparaiso, Chile
    701.3×
  147. 147ToulouseOccitanie, France
    701.3×
  148. 147DěčínÚstí nad Labem Region, Czechia
    701.3×
  149. 147TalcahuanoBiobio, Chile
    701.3×
  150. 150DushanbeDushanbe, Tajikistan
    691.3×
  151. 150OviedoAsturias, Spain
    691.3×
  152. 150LinaresMaule Region, Chile
    691.3×
  153. 150CalamaAntofagasta, Chile
    691.3×
  154. 154La SerenaCoquimbo Region, Chile
    691.3×
  155. 155BellinzonaTicino, Switzerland
    691.3×
  156. 155GdyniaPomerania, Poland
    691.3×
  157. 155QuillotaValparaiso, Chile
    691.3×
  158. 155Los ÁngelesBiobio, Chile
    691.3×
  159. 159LourdesOccitanie, France
    691.2×
  160. 159Santa Anita - Los FicusLima region, Peru
    691.2×
  161. 159Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    691.2×
  162. 162Suphan BuriSuphan Buri, Thailand
    691.2×
  163. 162Tai PoTai Po, Hong Kong
    691.2×
  164. 164Şabāḩ as SālimMubārak al Kabīr, Kuwait
    691.2×
  165. 164DaxNew Aquitaine, France
    691.2×
  166. 164WłocławekKujawsko-Pomorskie, Poland
    691.2×
  167. 164CoquimboCoquimbo Region, Chile
    691.2×
  168. 164Saint CloudMinnesota, United States
    691.2×
  169. 169VigoGalicia, Spain
    681.2×
  170. 169RoveretoTrentino-Alto Adige, Italy
    681.2×
  171. 169JesiThe Marches, Italy
    681.2×
  172. 169OttawaOntario, Canada
    681.2×
  173. 173Nong ChokBangkok, Thailand
    681.2×
  174. 173AntofagastaAntofagasta, Chile
    681.2×
  175. 173AnchorageAlaska, United States
    681.2×
  176. 173Sai MaiBangkok, Thailand
    681.2×
  177. 177PhetchabunPhetchabun, Thailand
    681.2×
  178. 178PhuketPhuket, Thailand
    681.2×
  179. 178San Tung Chung HangIslands, Hong Kong
    681.2×
  180. 180Nakhon Si ThammaratNakhon Si Thammarat, Thailand
    681.2×
  181. 180IrapuatoGuanajuato, Mexico
    681.2×
  182. 180SunnysideWashington, United States
    681.2×
  183. 183AntananarivoAnalamanga, Madagascar
    671.2×
  184. 183TalcaMaule Region, Chile
    671.2×
  185. 183CoronelBiobio, Chile
    671.2×
  186. 183MinneapolisMinnesota, United States
    671.2×
  187. 187LublinLublin, Poland
    671.2×
  188. 187ConcepciónBiobio, Chile
    671.2×
  189. 189CopiapóAtacama, Chile
    671.2×
  190. 189CelayaGuanajuato, Mexico
    671.2×
  191. 189BrossardQuebec, Canada
    671.2×
  192. 192TorreviejaValencia, Spain
    671.2×
  193. 192LuganoTicino, Switzerland
    671.2×
  194. 192León de los AldamaGuanajuato, Mexico
    671.2×
  195. 195Klagenfurt am WörtherseeCarinthia, Austria
    661.2×
  196. 195Saint PaulMinnesota, United States
    661.2×
  197. 197Sau Mau PingKwun Tong District, Hong Kong
    661.1×
  198. 197Ústí nad LabemÚstí nad Labem Region, Czechia
    661.1×
  199. 197MadridMadrid, Spain
    661.1×
  200. 200Nakhon RatchasimaNakhon Ratchasima, Thailand
    661.1×

Top 200 of 1,182 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 6, 2023, smogrank.com/history/2023-01-06 (accessed 2 Oct 2026).

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