SmogRank / History / January 12, 2023

Most polluted cities on January 12, 2023

1,167 cities ranked by their average PM2.5 over the day; the worst was Korçë, Albania, at 57.7 µg/m³. Each city's own local calendar day.

OpenAQ's archive, where our readings come from, has almost none for this day. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

← Korçë 57.7 µg/m³ 50 µg/m³15 WHO 24-hour guideline0
Every city ranked for January 12, 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. 1KorçëKorçë County, Albania
    1533.8×
  2. 2BihaćFederation of B&H, Bosnia and Herzegovina
    1283.1×
  3. 3MariglianoCampania, Italy
    1263.1×
  4. 4BelgradeCentral Serbia, Serbia
    1233.0×
  5. 5PrilepPrilep, North Macedonia
    1202.9×
  6. 6Novo MestoUrban Municipality of Novo Mesto, Slovenia
    1182.8×
  7. 7TurinPiedmont, Italy
    1182.8×
  8. 8StrumicaStrumica, North Macedonia
    1112.6×
  9. 9TrbovljeMunicipality of Trbovlje, Slovenia
    1102.6×
  10. 10LjubljanaLjubljana, Slovenia
    1102.6×
  11. 11KranjUrban Municipality of Kranj, Slovenia
    1042.5×
  12. 12RužomberokŽilina Region, Slovakia
    1032.4×
  13. 13BeneventoCampania, Italy
    1022.4×
  14. 14GostivarGostivar, North Macedonia
    982.3×
  15. 15LublinLublin, Poland
    952.2×
  16. 16GrajewoPodlasie, Poland
    942.2×
  17. 16PesaroThe Marches, Italy
    942.2×
  18. 18GjilanGjilan, Kosovo
    942.1×
  19. 19TetovoTetovo, North Macedonia
    932.1×
  20. 20AcerraCampania, Italy
    932.1×
  21. 21LučenecBanská Bystrica Region, Slovakia
    912.1×
  22. 22PátraWest Greece, Greece
    912.0×
  23. 23Vranov nad TopľouPrešov Region, Slovakia
    902.0×
  24. 24ChaniáCrete, Greece
    892.0×
  25. 25PtujUrban Municipality of Ptuj, Slovenia
    881.9×
  26. 26PejëPec, Kosovo
    881.9×
  27. 27HumennéPrešov Region, Slovakia
    871.9×
  28. 28AnconaThe Marches, Italy
    861.9×
  29. 29PrešovPrešov Region, Slovakia
    851.8×
  30. 30CeljeUrban Municipality of Celje, Slovenia
    851.8×
  31. 31Falconara MarittimaThe Marches, Italy
    851.8×
  32. 32JesiThe Marches, Italy
    841.8×
  33. 32KoprivnicaKoprivnica-Križevci, Croatia
    841.8×
  34. 34OtwockMazovia, Poland
    841.8×
  35. 34BitolaBitola, North Macedonia
    841.8×
  36. 36ŽilinaŽilina Region, Slovakia
    841.8×
  37. 37MartinŽilina Region, Slovakia
    831.8×
  38. 37KrakówLesser Poland, Poland
    831.8×
  39. 39PartizánskeTrenčín Region, Slovakia
    831.8×
  40. 40TrebišovKošice Region, Slovakia
    831.8×
  41. 41OhridOhrid, North Macedonia
    831.7×
  42. 42PrzemyślSubcarpathia, Poland
    821.7×
  43. 43BardejovPrešov Region, Slovakia
    811.7×
  44. 43KavadarciKavadarci, North Macedonia
    811.7×
  45. 45Liptovský Mikulᚎilina Region, Slovakia
    801.6×
  46. 46PrievidzaTrenčín Region, Slovakia
    791.6×
  47. 47KalamazooMichigan, United States
    791.6×
  48. 48PrizrenPrizren, Kosovo
    781.6×
  49. 49PúchovTrenčín Region, Slovakia
    781.6×
  50. 50HelenaMontana, United States
    771.5×
  51. 51Iowa CityIowa, United States
    771.5×
  52. 52AthensAttica, Greece
    771.5×
  53. 52SallanchesAuvergne-Rhône-Alpes, France
    771.5×
  54. 54SiedlceMazovia, Poland
    761.5×
  55. 55SkopjeGrad Skopje, North Macedonia
    761.5×
  56. 56AvellinoCampania, Italy
    751.5×
  57. 57StarachowiceŚwiętokrzyskie, Poland
    751.5×
  58. 57AugustówPodlasie, Poland
    751.5×
  59. 59Cluj-NapocaCluj County, Romania
    751.5×
  60. 59Banská BystricaBanská Bystrica Region, Slovakia
    751.5×
  61. 61ŁukówLublin, Poland
    741.4×
  62. 62WawerMazovia, Poland
    741.4×
  63. 63ZvolenBanská Bystrica Region, Slovakia
    741.4×
  64. 64LyonAuvergne-Rhône-Alpes, France
    741.4×
  65. 64DetroitMichigan, United States
    741.4×
  66. 66LansingMichigan, United States
    731.4×
  67. 66Lincoln ParkMichigan, United States
    731.4×
  68. 66BismarckNorth Dakota, United States
    731.4×
  69. 69JarosławSubcarpathia, Poland
    731.4×
  70. 69BolzanoTrentino-Alto Adige, Italy
    731.4×
  71. 71WolfsbergCarinthia, Austria
    731.4×
  72. 71TrnavaTrnava Region, Slovakia
    731.4×
  73. 71MariborUrban Municipality of Maribor, Slovenia
    731.4×
  74. 74DearbornMichigan, United States
    731.4×
  75. 75South BendIndiana, United States
    721.4×
  76. 76Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    721.4×
  77. 77KochaniKochani, North Macedonia
    711.3×
  78. 78CodleaBrașov County, Romania
    711.3×
  79. 78RzeszówSubcarpathia, Poland
    711.3×
  80. 78KomárnoNitra Region, Slovakia
    711.3×
  81. 81VelesVeles, North Macedonia
    711.3×
  82. 81YpsilantiMichigan, United States
    711.3×
  83. 83JasłoSubcarpathia, Poland
    711.3×
  84. 83Žiar nad HronomBanská Bystrica Region, Slovakia
    711.3×
  85. 83OurenseGalicia, Spain
    711.3×
  86. 86RadomMazovia, Poland
    701.3×
  87. 86VigoGalicia, Spain
    701.3×
  88. 86MolineIllinois, United States
    701.3×
  89. 86RedfordMichigan, United States
    701.3×
  90. 90Cedar RapidsIowa, United States
    701.3×
  91. 91KielceŚwiętokrzyskie, Poland
    701.3×
  92. 91DavenportIowa, United States
    701.3×
  93. 93ValenceAuvergne-Rhône-Alpes, France
    701.3×
  94. 94CraiovaDolj, Romania
    691.3×
  95. 95ElkhartIndiana, United States
    691.3×
  96. 96ClintonIowa, United States
    691.3×
  97. 97EłkWarmia-Masuria, Poland
    691.2×
  98. 98Klagenfurt am WörtherseeCarinthia, Austria
    691.2×
  99. 98CharlottesvilleVirginia, United States
    691.2×
  100. 98TaylorMichigan, United States
    691.2×
  101. 101East Saint LouisIllinois, United States
    691.2×
  102. 102LegionowoMazovia, Poland
    681.2×
  103. 103NitraNitra Region, Slovakia
    681.2×
  104. 104La CrosseWisconsin, United States
    681.2×
  105. 105BiałystokPodlasie, Poland
    681.2×
  106. 105GevgelijaGevgelija, North Macedonia
    681.2×
  107. 105PezinokBratislava Region, Slovakia
    681.2×
  108. 108TarbesOccitanie, France
    681.2×
  109. 108PorsgrunnTelemark, Norway
    681.2×
  110. 108DecaturIllinois, United States
    681.2×
  111. 108SpringfieldIllinois, United States
    681.2×
  112. 108PhoenixArizona, United States
    681.2×
  113. 113WarsawMazovia, Poland
    671.2×
  114. 113San Felice A CancelloCampania, Italy
    671.2×
  115. 115ValdemoroMadrid, Spain
    671.2×
  116. 115DurangoBasque Country, Spain
    671.2×
  117. 117MeylanAuvergne-Rhône-Alpes, France
    671.2×
  118. 117TrenčínTrenčín Region, Slovakia
    671.2×
  119. 117CarlislePennsylvania, United States
    671.2×
  120. 120HarrisburgPennsylvania, United States
    671.2×
  121. 121BailénAndalusia, Spain
    671.2×
  122. 121WłocławekKujawsko-Pomorskie, Poland
    671.2×
  123. 123LecceApulia, Italy
    661.2×
  124. 123ClevelandOhio, United States
    661.2×
  125. 125St. LouisMissouri, United States
    661.1×
  126. 126NaplesCampania, Italy
    661.1×
  127. 127ZamośćLublin, Poland
    661.1×
  128. 127PruszkówMazovia, Poland
    661.1×
  129. 127IlindenIlinden, North Macedonia
    661.1×
  130. 130OviedoAsturias, Spain
    661.1×
  131. 131DębicaSubcarpathia, Poland
    651.1×
  132. 131SenicaTrnava Region, Slovakia
    651.1×
  133. 133SuwałkiPodlasie, Poland
    651.1×
  134. 134SereďTrnava Region, Slovakia
    651.1×
  135. 135SteubenvilleOhio, United States
    651.1×
  136. 135LiberpolisCounty of Osijek-Baranja, Croatia
    651.1×
  137. 137KętrzynWarmia-Masuria, Poland
    641.1×
  138. 138MitrovicëMitrovica, Kosovo
    641.1×
  139. 139NairobiNairobi County, Kenya
    641.1×
  140. 140RēzekneRēzekne, Latvia
    641.1×
  141. 140MielecSubcarpathia, Poland
    641.1×
  142. 140Fort CollinsColorado, United States
    641.1×
  143. 143PułtuskMazovia, Poland
    641.1×
  144. 143SamaAsturias, Spain
    641.1×
  145. 143Collado-VillalbaMadrid, Spain
    641.1×
  146. 146IndianapolisIndiana, United States
    631.1×
  147. 146NapervilleIllinois, United States
    631.1×
  148. 146Port HuronMichigan, United States
    631.1×
  149. 149HernaniBasque Country, Spain
    631.0×
  150. 149Nocera InferioreCampania, Italy
    631.0×
  151. 149ButteMontana, United States
    631.0×
  152. 152AostaAosta Valley, Italy
    631.0×
  153. 153ČadcaŽilina Region, Slovakia
    631.0×
  154. 154les EscaldesEscaldes-Engordany, Andorra
    631.0×
  155. 154DěčínÚstí nad Labem Region, Czechia
    631.0×
  156. 154Bay CityMichigan, United States
    631.0×
  157. 157Kosovo PoljePristina, Kosovo
    621.0×
  158. 157SpartanburgSouth Carolina, United States
    621.0×
  159. 159ŻyrardówMazovia, Poland
    621.0×
  160. 159VitrollesProvence-Alpes-Côte d'Azur, France
    621.0×
  161. 159MalackyBratislava Region, Slovakia
    621.0×
  162. 159GijónAsturias, Spain
    621.0×
  163. 163IzegemFlanders, Belgium
    621.0×
  164. 163DrammenBuskerud, Norway
    621.0×
  165. 165HickoryNorth Carolina, United States
    621.0×
  166. 165GreenvilleSouth Carolina, United States
    621.0×
  167. 167AlgecirasAndalusia, Spain
    621.0×
  168. 168Konstancin-JeziornaMazovia, Poland
    611.0×
  169. 168University CityMissouri, United States
    611.0×
  170. 168JolietIllinois, United States
    611.0×
  171. 168LebanonPennsylvania, United States
    611.0×
  172. 172OlatheKansas, United States
    611.0×
  173. 172Kansas CityMissouri, United States
    611.0×
  174. 174LunelOccitanie, France
    611.0×
  175. 174ClemmonsNorth Carolina, United States
    611.0×
  176. 176GrenobleAuvergne-Rhône-Alpes, France
    611.0×
  177. 176JenisonMichigan, United States
    611.0×
  178. 176Saint PaulMinnesota, United States
    611.0×
  179. 176LongmontColorado, United States
    611.0×
  180. 180ToulouseOccitanie, France
    611.0×
  181. 180ValladolidCastille and León, Spain
    611.0×
  182. 180LexingtonNorth Carolina, United States
    611.0×
  183. 180AndersonIndiana, United States
    611.0×
  184. 184MonacoMunicipality of Monaco, Monaco
    610.9×
  185. 184RadomskoŁódź Voivodeship, Poland
    610.9×
  186. 184Ceglie MessapicaApulia, Italy
    610.9×
  187. 184BurnsvilleMinnesota, United States
    610.9×
  188. 188LiepājaLiepaja, Latvia
    600.9×
  189. 188OlsztynWarmia-Masuria, Poland
    600.9×
  190. 188GetxoBasque Country, Spain
    600.9×
  191. 188AmorebietaBasque Country, Spain
    600.9×
  192. 192Villefranche-sur-SaôneAuvergne-Rhône-Alpes, France
    600.9×
  193. 192MeyzieuAuvergne-Rhône-Alpes, France
    600.9×
  194. 192Shaker HeightsOhio, United States
    600.9×
  195. 195SpringfieldMissouri, United States
    600.9×
  196. 195MiddletownOhio, United States
    600.9×
  197. 195ThorntonColorado, United States
    600.9×
  198. 198IrákleionCrete, Greece
    600.9×
  199. 198KaunasKaunas, Lithuania
    600.9×
  200. 200Mladá BoleslavCentral Bohemia, Czechia
    600.9×

Top 200 of 1,167 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 12, 2023, smogrank.com/history/2023-01-12 (accessed 2 Oct 2026).

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