SmogRank / History / January 25, 2023

Most polluted cities on January 25, 2023

1,204 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 25, 2023. All episodes.

← Gómez Palacio 985.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for January 25, 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. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    36817.3×
  3. 3DushanbeDushanbe, Tajikistan
    25211.8×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    23510.7×
  5. 5SalorTashkent Region, Uzbekistan
    22910.3×
  6. 6Kampalalow-cost sensorsCentral Region, Uganda
    1917.5×
  7. 6Almatylow-cost sensorsAlmaty, Kazakhstan
    1917.5×
  8. 8Islamabadlow-cost sensorsIslamabad, Pakistan
    1887.2×
  9. 9Kathmandulow-cost sensorsBagmati Province, Nepal
    1877.1×
  10. 10N'DjamenaN’Djaména, Chad
    1867.1×
  11. 11Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1836.7×
  12. 12DelhiDelhi, India
    1796.3×
  13. 13Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1796.3×
  14. 14MumbaiMaharashtra, India
    1766.1×
  15. 15BamakoBamako, Mali
    1735.8×
  16. 16KigaliKigali, Rwanda
    1634.8×
  17. 17Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1614.6×
  18. 18Yerevanlow-cost sensorsYerevan, Armenia
    1594.4×
  19. 19VolosThessaly, Greece
    1584.4×
  20. 20YangonYangon, Myanmar
    1584.4×
  21. 21BaghdadBaghdad, Iraq
    1554.1×
  22. 22LampangLampang, Thailand
    1544.0×
  23. 22HanoiHanoi, Vietnam
    1544.0×
  24. 24Tha BoNong Khai, Thailand
    1523.8×
  25. 25AlexandriaAlexandria, Egypt
    1523.8×
  26. 26Abujalow-cost sensorsFCT, Nigeria
    1523.8×
  27. 27Mae SotTak, Thailand
    1523.8×
  28. 28LamphunLamphun, Thailand
    1503.7×
  29. 29PhayaoPhayao, Thailand
    1483.6×
  30. 30SukhothaiSukhothai, Thailand
    1463.6×
  31. 31Banja LukaSrpska, Bosnia and Herzegovina
    1433.5×
  32. 32TilburgNorth Brabant, The Netherlands
    1423.5×
  33. 33DunkirkHauts-de-France, France
    1373.3×
  34. 34ZapopanJalisco, Mexico
    1313.2×
  35. 35EindhovenNorth Brabant, The Netherlands
    1283.1×
  36. 36NanNan, Thailand
    1283.1×
  37. 37RatchaburiRatchaburi, Thailand
    1273.1×
  38. 38VenrayLimburg, The Netherlands
    1273.1×
  39. 39RoubaixHauts-de-France, France
    1253.0×
  40. 40LilleHauts-de-France, France
    1243.0×
  41. 41GuangzhouGuangdong, China
    1243.0×
  42. 42JohannesburgGauteng, South Africa
    1212.9×
  43. 43PueblaPuebla, Mexico
    1212.9×
  44. 44CelayaGuanajuato, Mexico
    1182.8×
  45. 45Chiang MaiChiang Mai, Thailand
    1182.8×
  46. 46SallanchesAuvergne-Rhône-Alpes, France
    1182.8×
  47. 47BredaNorth Brabant, The Netherlands
    1162.8×
  48. 48DouaiHauts-de-France, France
    1142.7×
  49. 48DrammenBuskerud, Norway
    1142.7×
  50. 50RouenNormandy, France
    1142.7×
  51. 51Kamphaeng PhetKamphaeng Phet, Thailand
    1142.7×
  52. 52San Mateo AtencoMéxico, Mexico
    1112.6×
  53. 53Wan ChaiWan Chai, Hong Kong
    1092.6×
  54. 54HyderabadTelangana, India
    1092.6×
  55. 55San Francisco TlalcilalcalpanMéxico, Mexico
    1082.6×
  56. 56UttaraditUttaradit, Thailand
    1072.5×
  57. 57NijmegenGelderland, The Netherlands
    1062.5×
  58. 58San Tung Chung HangIslands, Hong Kong
    1052.5×
  59. 58ValenciennesHauts-de-France, France
    1052.5×
  60. 60TolucaMéxico, Mexico
    1042.5×
  61. 61PurmerendNorth Holland, The Netherlands
    1042.4×
  62. 62AmmanAmman, Jordan
    1042.4×
  63. 63Tin Shui WaiYuen Long, Hong Kong
    1032.4×
  64. 64BadhoevedorpNorth Holland, The Netherlands
    1022.4×
  65. 65CardiffWales, United Kingdom
    1022.4×
  66. 66RidderkerkSouth Holland, The Netherlands
    1022.4×
  67. 66MeylanAuvergne-Rhône-Alpes, France
    1022.4×
  68. 68RotterdamSouth Holland, The Netherlands
    1002.4×
  69. 69FanlingNorth District, Hong Kong
    1002.3×
  70. 70ZaanstadNorth Holland, The Netherlands
    992.3×
  71. 70HillegomSouth Holland, The Netherlands
    992.3×
  72. 72LublinLublin, Poland
    992.3×
  73. 72Mae SaiChiang Rai, Thailand
    992.3×
  74. 74Chiang RaiChiang Rai, Thailand
    992.3×
  75. 75PhichitPhichit, Thailand
    992.3×
  76. 76AmsterdamNorth Holland, The Netherlands
    982.3×
  77. 77KrapkowiceOpole Voivodeship, Poland
    982.3×
  78. 77TocopillaAntofagasta, Chile
    982.3×
  79. 79RadomMazovia, Poland
    982.3×
  80. 80's-GravenzandeSouth Holland, The Netherlands
    982.3×
  81. 81Hua HinPrachuap Khiri Khan, Thailand
    972.3×
  82. 82PułtuskMazovia, Poland
    972.3×
  83. 82LisieuxNormandy, France
    972.3×
  84. 84MonacoMunicipality of Monaco, Monaco
    972.2×
  85. 85Velsen-ZuidNorth Holland, The Netherlands
    962.2×
  86. 85The HagueSouth Holland, The Netherlands
    962.2×
  87. 85IrapuatoGuanajuato, Mexico
    962.2×
  88. 88Mong KokYau Tsim Mong District, Hong Kong
    962.2×
  89. 88MaarssenUtrecht, The Netherlands
    962.2×
  90. 90Saint-QuentinHauts-de-France, France
    962.2×
  91. 91Zielona GóraLubusz, Poland
    952.2×
  92. 92MaassluisSouth Holland, The Netherlands
    952.2×
  93. 92GrenobleAuvergne-Rhône-Alpes, France
    952.2×
  94. 92LewistonIdaho, United States
    952.2×
  95. 95SaraburiSaraburi, Thailand
    952.2×
  96. 96AugustówPodlasie, Poland
    942.2×
  97. 96ParedesPorto, Portugal
    942.2×
  98. 98PátraWest Greece, Greece
    942.1×
  99. 99Nong KhaemBangkok, Thailand
    942.1×
  100. 99IJsselsteinUtrecht, The Netherlands
    942.1×
  101. 99Khlong Sam WaBangkok, Thailand
    942.1×
  102. 102UtrechtUtrecht, The Netherlands
    932.1×
  103. 103MukdahanMukdahan, Thailand
    932.1×
  104. 104Ciudad NezahualcoyotlMéxico, Mexico
    932.1×
  105. 105KętrzynWarmia-Masuria, Poland
    932.1×
  106. 106RacibórzSilesia, Poland
    922.1×
  107. 107San Salvador TizatlalliMéxico, Mexico
    922.1×
  108. 108VictoriaCentral and Western, Hong Kong
    922.1×
  109. 108SouthamptonEngland, United Kingdom
    922.1×
  110. 110Kwai ChungKwai Tsing District, Hong Kong
    922.1×
  111. 110MedemblikNorth Holland, The Netherlands
    922.1×
  112. 112ÉvreuxNormandy, France
    912.0×
  113. 113RennesBrittany, France
    912.0×
  114. 113GuadalajaraJalisco, Mexico
    912.0×
  115. 115XonacatlánMéxico, Mexico
    912.0×
  116. 116BakersfieldCalifornia, United States
    902.0×
  117. 116VisaliaCalifornia, United States
    902.0×
  118. 118Tai PoTai Po, Hong Kong
    902.0×
  119. 118Sau Mau PingKwun Tong District, Hong Kong
    902.0×
  120. 118LęborkPomerania, Poland
    902.0×
  121. 121Sha TinSha Tin, Hong Kong
    902.0×
  122. 122FresnoCalifornia, United States
    892.0×
  123. 123GrajewoPodlasie, Poland
    892.0×
  124. 123BeauvaisHauts-de-France, France
    892.0×
  125. 125Nakhon SawanNakhon Sawan, Thailand
    892.0×
  126. 125NottinghamEngland, United Kingdom
    892.0×
  127. 127LorientBrittany, France
    881.9×
  128. 128ChisinauChișinău Municipality, Moldova
    881.9×
  129. 129KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    881.9×
  130. 130StarachowiceŚwiętokrzyskie, Poland
    871.9×
  131. 130Suphan BuriSuphan Buri, Thailand
    871.9×
  132. 130ChambéryAuvergne-Rhône-Alpes, France
    871.9×
  133. 133Le HavreNormandy, France
    871.9×
  134. 134ParisÎle-de-France, France
    871.9×
  135. 134Tepeji del Río de OcampoHidalgo, Mexico
    871.9×
  136. 134Lak SiBangkok, Thailand
    871.9×
  137. 137Mueang NonthaburiNonthaburi, Thailand
    871.9×
  138. 137Nakhon RatchasimaNakhon Ratchasima, Thailand
    871.9×
  139. 139CholulaPuebla, Mexico
    861.9×
  140. 139MexicaliBaja California, Mexico
    861.9×
  141. 141Samut SakhonSamut Sakhon, Thailand
    861.9×
  142. 142PhetchabunPhetchabun, Thailand
    861.8×
  143. 142CaenNormandy, France
    861.8×
  144. 144Nakhon PathomNakhon Pathom, Thailand
    851.8×
  145. 144AmiensHauts-de-France, France
    851.8×
  146. 144SunnysideWashington, United States
    851.8×
  147. 147Sham Shui PoSham Shui Po District, Hong Kong
    851.8×
  148. 148AlessandriaPiedmont, Italy
    851.8×
  149. 149ManosqueProvence-Alpes-Côte d'Azur, France
    851.8×
  150. 150ŻyrardówMazovia, Poland
    851.8×
  151. 150Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    851.8×
  152. 150GdyniaPomerania, Poland
    851.8×
  153. 153VannesBrittany, France
    851.8×
  154. 153TijuanaBaja California, Mexico
    851.8×
  155. 155DreuxCentre-Val de Loire, France
    841.8×
  156. 155HanfordCalifornia, United States
    841.8×
  157. 155StocktonCalifornia, United States
    841.8×
  158. 158BiałystokPodlasie, Poland
    841.8×
  159. 158YakimaWashington, United States
    841.8×
  160. 160Bang NaBangkok, Thailand
    841.8×
  161. 161Lat KrabangBangkok, Thailand
    841.8×
  162. 162WarsawMazovia, Poland
    831.8×
  163. 162WłocławekKujawsko-Pomorskie, Poland
    831.8×
  164. 164Cluj-NapocaCluj County, Romania
    831.8×
  165. 164PauNew Aquitaine, France
    831.8×
  166. 164PortervilleCalifornia, United States
    831.8×
  167. 167Khlong LuangPathum Thani, Thailand
    831.7×
  168. 167Bang KapiBangkok, Thailand
    831.7×
  169. 167HayesEngland, United Kingdom
    831.7×
  170. 167Bueng KumBangkok, Thailand
    831.7×
  171. 171Ubon RatchathaniUbon Ratchathani, Thailand
    831.7×
  172. 171PłockMazovia, Poland
    831.7×
  173. 173Villa Poeta José Gálvez BarrenecheaLima region, Peru
    821.7×
  174. 174Bang Bo DistrictSamut Prakan, Thailand
    821.7×
  175. 174AnnemasseAuvergne-Rhône-Alpes, France
    821.7×
  176. 176PruszkówMazovia, Poland
    821.7×
  177. 176ZvolenBanská Bystrica Region, Slovakia
    821.7×
  178. 178EłkWarmia-Masuria, Poland
    821.7×
  179. 178Bang Khun ThianBangkok, Thailand
    821.7×
  180. 178LondonEngland, United Kingdom
    821.7×
  181. 181KościerzynaPomerania, Poland
    821.7×
  182. 182KhartoumKhartoum, Sudan
    821.7×
  183. 182OlsztynWarmia-Masuria, Poland
    821.7×
  184. 182Sakon NakhonSakon Nakhon, Thailand
    821.7×
  185. 182Amnat CharoenAmnat Charoen, Thailand
    821.7×
  186. 182PakxanBolikhamsai, Laos
    821.7×
  187. 187OtwockMazovia, Poland
    811.7×
  188. 187AlbertvilleAuvergne-Rhône-Alpes, France
    811.7×
  189. 189GdańskPomerania, Poland
    811.7×
  190. 190Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    811.7×
  191. 190Banská BystricaBanská Bystrica Region, Slovakia
    811.7×
  192. 192SuwałkiPodlasie, Poland
    801.7×
  193. 192AndoverEngland, United Kingdom
    801.7×
  194. 194WawerMazovia, Poland
    801.6×
  195. 194BitolaBitola, North Macedonia
    801.6×
  196. 194ChartresCentre-Val de Loire, France
    801.6×
  197. 194BordeauxNew Aquitaine, France
    801.6×
  198. 198BangkokBangkok, Thailand
    801.6×
  199. 198PoznańGreater Poland, Poland
    801.6×
  200. 200Si Maha PhotPrachin Buri, Thailand
    801.6×

Top 200 of 1,204 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 25, 2023, smogrank.com/history/2023-01-25 (accessed 2 Oct 2026).

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