SmogRank / History / January 29, 2023

Most polluted cities on January 29, 2023

1,252 cities ranked by their average PM2.5 over the day; the worst was Gómez Palacio, Mexico, at 985.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 29, 2023. All episodes.

← Gómez Palacio 985.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for January 29, 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. 1Gómez PalacioDurango, Mexico
    500+65.7×
  2. 2Lahorelow-cost sensorsPunjab, Pakistan
    28914.3×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    27413.3×
  4. 4SalorTashkent Region, Uzbekistan
    25912.3×
  5. 5DushanbeDushanbe, Tajikistan
    25512.0×
  6. 6DelhiDelhi, India
    25111.7×
  7. 7Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    2229.8×
  8. 8N'DjamenaN’Djaména, Chad
    2129.1×
  9. 9AshgabatAshgabat, Turkmenistan
    1756.0×
  10. 10Karachilow-cost sensorsSindh, Pakistan
    1756.0×
  11. 11HyderabadTelangana, India
    1735.8×
  12. 12HanoiHanoi, Vietnam
    1685.3×
  13. 13KhartoumKhartoum, Sudan
    1685.3×
  14. 14Ciudad Benito JuárezNuevo León, Mexico
    1685.3×
  15. 15San Mateo AtencoMéxico, Mexico
    1675.2×
  16. 16Almatylow-cost sensorsAlmaty, Kazakhstan
    1665.2×
  17. 17Abujalow-cost sensorsFCT, Nigeria
    1644.9×
  18. 18Kathmandulow-cost sensorsBagmati Province, Nepal
    1644.9×
  19. 19MumbaiMaharashtra, India
    1624.7×
  20. 20Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1614.6×
  21. 21Islamabadlow-cost sensorsIslamabad, Pakistan
    1574.3×
  22. 22LampangLampang, Thailand
    1544.0×
  23. 23LamphunLamphun, Thailand
    1523.8×
  24. 24SukhothaiSukhothai, Thailand
    1513.7×
  25. 25ColomboWestern Province, Sri Lanka
    1423.5×
  26. 26BaghdadBaghdad, Iraq
    1393.4×
  27. 26NanNan, Thailand
    1393.4×
  28. 28Tha BoNong Khai, Thailand
    1373.3×
  29. 29Botevgradlow-cost sensorsSofia, Bulgaria
    1373.3×
  30. 29Ciudad ApodacaNuevo León, Mexico
    1373.3×
  31. 31MonterreyNuevo León, Mexico
    1313.2×
  32. 32Kampalalow-cost sensorsCentral Region, Uganda
    1263.0×
  33. 33Chiang MaiChiang Mai, Thailand
    1253.0×
  34. 34LoeiLoei, Thailand
    1243.0×
  35. 35BakuBaki, Azerbaijan
    1243.0×
  36. 36GarcíaNuevo León, Mexico
    1222.9×
  37. 37Santa CatarinaNuevo León, Mexico
    1182.8×
  38. 38CelayaGuanajuato, Mexico
    1172.8×
  39. 39RatchaburiRatchaburi, Thailand
    1162.8×
  40. 40TolucaMéxico, Mexico
    1142.7×
  41. 41Kamphaeng PhetKamphaeng Phet, Thailand
    1142.7×
  42. 42PátraWest Greece, Greece
    1122.7×
  43. 43AlexandriaAlexandria, Egypt
    1122.7×
  44. 44Cadereyta JiménezNuevo León, Mexico
    1112.6×
  45. 45CalexicoCalifornia, United States
    1102.6×
  46. 46Zacatepec de HidalgoMorelos, Mexico
    1092.6×
  47. 47ShanghaiShanghai, China
    1092.6×
  48. 48Banja LukaSrpska, Bosnia and Herzegovina
    1092.6×
  49. 48Ciudad NezahualcoyotlMéxico, Mexico
    1092.6×
  50. 50UttaraditUttaradit, Thailand
    1072.5×
  51. 51BitolaBitola, North Macedonia
    1032.4×
  52. 51CholulaPuebla, Mexico
    1032.4×
  53. 53PakxanBolikhamsai, Laos
    1032.4×
  54. 53CanbyOregon, United States
    1032.4×
  55. 55YangonYangon, Myanmar
    1022.4×
  56. 56PhichitPhichit, Thailand
    1002.4×
  57. 56ValenciennesHauts-de-France, France
    1002.4×
  58. 58Ciudad General EscobedoNuevo León, Mexico
    1002.4×
  59. 59KigaliKigali, Rwanda
    992.3×
  60. 60TakTak, Thailand
    992.3×
  61. 61Mae SotTak, Thailand
    992.3×
  62. 62Nong Bua LamphuNong Bua Lamphu, Thailand
    982.3×
  63. 63PhetchabunPhetchabun, Thailand
    972.3×
  64. 64Chiang RaiChiang Rai, Thailand
    972.3×
  65. 65BamakoBamako, Mali
    972.3×
  66. 66Villa Poeta José Gálvez BarrenecheaLima region, Peru
    972.2×
  67. 67JeddahMecca Region, Saudi Arabia
    952.2×
  68. 68Saint-QuentinHauts-de-France, France
    952.2×
  69. 69Wan ChaiWan Chai, Hong Kong
    952.2×
  70. 70Khlong Sam WaBangkok, Thailand
    952.2×
  71. 71Mae SaiChiang Rai, Thailand
    942.2×
  72. 71Udon ThaniUdon Thani, Thailand
    942.2×
  73. 73DouaiHauts-de-France, France
    932.1×
  74. 74MukdahanMukdahan, Thailand
    922.1×
  75. 75MeylanAuvergne-Rhône-Alpes, France
    922.1×
  76. 75XonacatlánMéxico, Mexico
    922.1×
  77. 77Ciudad JuárezChihuahua, Mexico
    922.1×
  78. 78Samut SakhonSamut Sakhon, Thailand
    912.0×
  79. 79Nakhon PathomNakhon Pathom, Thailand
    912.0×
  80. 80SaraburiSaraburi, Thailand
    912.0×
  81. 81Bang Khun ThianBangkok, Thailand
    902.0×
  82. 81Joué-lès-ToursCentre-Val de Loire, France
    902.0×
  83. 81GrenobleAuvergne-Rhône-Alpes, France
    902.0×
  84. 84Nong KhaemBangkok, Thailand
    902.0×
  85. 84EindhovenNorth Brabant, The Netherlands
    902.0×
  86. 86MexicaliBaja California, Mexico
    902.0×
  87. 87KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    892.0×
  88. 88Sevlievolow-cost sensorsGabrovo, Bulgaria
    892.0×
  89. 89Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    892.0×
  90. 90Khlong LuangPathum Thani, Thailand
    892.0×
  91. 91BelgradeCentral Serbia, Serbia
    881.9×
  92. 92IrapuatoGuanajuato, Mexico
    881.9×
  93. 93Nakhon RatchasimaNakhon Ratchasima, Thailand
    871.9×
  94. 93LilleHauts-de-France, France
    871.9×
  95. 95NišCentral Serbia, Serbia
    861.9×
  96. 96RancaguaO'Higgins Region, Chile
    861.9×
  97. 97Bueng KumBangkok, Thailand
    851.8×
  98. 98Ga-RankuwaNorth West, South Africa
    851.8×
  99. 99GuangzhouGuangdong, China
    851.8×
  100. 99Tin Shui WaiYuen Long, Hong Kong
    851.8×
  101. 101Şabāḩ as SālimMubārak al Kabīr, Kuwait
    841.8×
  102. 101Nakhon SawanNakhon Sawan, Thailand
    841.8×
  103. 101LimaLima Province, Peru
    841.8×
  104. 104Ubon RatchathaniUbon Ratchathani, Thailand
    841.8×
  105. 104MarseilleProvence-Alpes-Côte d'Azur, France
    841.8×
  106. 104Saphan SungBangkok, Thailand
    841.8×
  107. 107Bang NaBangkok, Thailand
    841.8×
  108. 108BangkokBangkok, Thailand
    841.8×
  109. 108Ban HouakhouaBokeo, Laos
    841.8×
  110. 110TalaganteSantiago Metropolitan, Chile
    831.8×
  111. 110HarewoodBritish Columbia, Canada
    831.8×
  112. 112Bang Bo DistrictSamut Prakan, Thailand
    831.8×
  113. 112VenrayLimburg, The Netherlands
    831.8×
  114. 112TurinPiedmont, Italy
    831.8×
  115. 115TocopillaAntofagasta, Chile
    831.7×
  116. 115Lak SiBangkok, Thailand
    831.7×
  117. 117QuinteroValparaiso, Chile
    821.7×
  118. 118TokozaGauteng, South Africa
    821.7×
  119. 118Hua HinPrachuap Khiri Khan, Thailand
    821.7×
  120. 118PoitiersNew Aquitaine, France
    821.7×
  121. 118BloisCentre-Val de Loire, France
    821.7×
  122. 122Bang KapiBangkok, Thailand
    821.7×
  123. 123San Salvador TizatlalliMéxico, Mexico
    821.7×
  124. 124Gabrovolow-cost sensorsGabrovo, Bulgaria
    811.7×
  125. 124Sakon NakhonSakon Nakhon, Thailand
    811.7×
  126. 124Buri RamBuriram, Thailand
    811.7×
  127. 124Ban Samae DamBangkok, Thailand
    811.7×
  128. 124Lat KrabangBangkok, Thailand
    811.7×
  129. 129Si Maha PhotPrachin Buri, Thailand
    811.7×
  130. 129VictoriaCentral and Western, Hong Kong
    811.7×
  131. 131Bielsko-BialaSilesia, Poland
    801.7×
  132. 132JohannesburgGauteng, South Africa
    801.7×
  133. 132PhuketPhuket, Thailand
    801.7×
  134. 132FanlingNorth District, Hong Kong
    801.7×
  135. 132ChambéryAuvergne-Rhône-Alpes, France
    801.7×
  136. 132Ecatepec de MorelosMéxico, Mexico
    801.7×
  137. 132SalamancaGuanajuato, Mexico
    801.7×
  138. 138RouenNormandy, France
    801.6×
  139. 138SantiagoSantiago Metropolitan, Chile
    801.6×
  140. 140Kwai ChungKwai Tsing District, Hong Kong
    801.6×
  141. 140HeerlenLimburg, The Netherlands
    801.6×
  142. 140LuxembourgLuxembourg, Luxembourg
    801.6×
  143. 143San Tung Chung HangIslands, Hong Kong
    801.6×
  144. 143Khan Na YaoBangkok, Thailand
    801.6×
  145. 145VanderbijlparkGauteng, South Africa
    791.6×
  146. 145Mong KokYau Tsim Mong District, Hong Kong
    791.6×
  147. 145TilburgNorth Brabant, The Netherlands
    791.6×
  148. 145LinaresMaule Region, Chile
    791.6×
  149. 145Santiago de QuerétaroQuerétaro, Mexico
    791.6×
  150. 150Mueang NonthaburiNonthaburi, Thailand
    791.6×
  151. 150Sha TinSha Tin, Hong Kong
    791.6×
  152. 150NacimientoBiobio, Chile
    791.6×
  153. 153Suphan BuriSuphan Buri, Thailand
    791.6×
  154. 153San CarlosÑuble, Chile
    791.6×
  155. 155Le MansPays de la Loire, France
    791.6×
  156. 155BéthuneHauts-de-France, France
    791.6×
  157. 157QuillotaValparaiso, Chile
    781.6×
  158. 158Roi EtRoi Et, Thailand
    781.6×
  159. 159BredaNorth Brabant, The Netherlands
    781.6×
  160. 159Viña del MarValparaiso, Chile
    781.6×
  161. 161BailénAndalusia, Spain
    771.6×
  162. 162KalasinKalasin, Thailand
    771.5×
  163. 162ParisÎle-de-France, France
    771.5×
  164. 164NijmegenGelderland, The Netherlands
    771.5×
  165. 165MaarssenUtrecht, The Netherlands
    771.5×
  166. 165BeauvaisHauts-de-France, France
    771.5×
  167. 167TratTrat, Thailand
    771.5×
  168. 167Mexico CityMexico City, Mexico
    771.5×
  169. 169Ban Talat BuengChon Buri, Thailand
    771.5×
  170. 169JesiThe Marches, Italy
    771.5×
  171. 171Tepeji del Río de OcampoHidalgo, Mexico
    761.5×
  172. 172CuricóMaule Region, Chile
    761.5×
  173. 173Addis AbabaAddis Ababa, Ethiopia
    761.5×
  174. 173Sau Mau PingKwun Tong District, Hong Kong
    761.5×
  175. 175Haskovolow-cost sensorsHaskovo, Bulgaria
    761.5×
  176. 175Tsuen WanTsuen Wan, Hong Kong
    761.5×
  177. 175Sai MaiBangkok, Thailand
    761.5×
  178. 178Spišská Nová VesKošice Region, Slovakia
    751.5×
  179. 178AnnemasseAuvergne-Rhône-Alpes, France
    751.5×
  180. 180EnschedeOverijssel, The Netherlands
    751.5×
  181. 180PueblaPuebla, Mexico
    751.5×
  182. 182ChaiyaphumChaiyaphum, Thailand
    751.5×
  183. 182Ban Khlong PrawetBangkok, Thailand
    751.5×
  184. 182Laem ChabangChon Buri, Thailand
    751.5×
  185. 182RidderkerkSouth Holland, The Netherlands
    751.5×
  186. 182Port AlberniBritish Columbia, Canada
    751.5×
  187. 187AugustówPodlasie, Poland
    741.4×
  188. 187ReimsGrand Est, France
    741.4×
  189. 187OlivetCentre-Val de Loire, France
    741.4×
  190. 187La SerenaCoquimbo Region, Chile
    741.4×
  191. 191Dimitrovgradlow-cost sensorsHaskovo, Bulgaria
    741.4×
  192. 191Phra PradaengSamut Prakan, Thailand
    741.4×
  193. 193AlençonNormandy, France
    741.4×
  194. 193ConcónValparaiso, Chile
    741.4×
  195. 193GreenfieldMassachusetts, United States
    741.4×
  196. 196ZvolenBanská Bystrica Region, Slovakia
    741.4×
  197. 197KłodzkoLower Silesia, Poland
    741.4×
  198. 197Jastrzębie ZdrójSilesia, Poland
    741.4×
  199. 197CoquimboCoquimbo Region, Chile
    741.4×
  200. 197AricaArica y Parinacota Region, Chile
    741.4×

Top 200 of 1,252 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 29, 2023, smogrank.com/history/2023-01-29 (accessed 2 Oct 2026).

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