SmogRank / History / January 13, 2023

Most polluted cities on January 13, 2023

1,177 cities ranked by their average PM2.5 over the day; the worst was Marigliano, Italy, at 103.4 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.

← Marigliano 103.4 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for January 13, 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. 1MariglianoCampania, Italy
    1856.9×
  2. 2KorçëKorçë County, Albania
    1725.7×
  3. 3StrumicaStrumica, North Macedonia
    1644.9×
  4. 4AcerraCampania, Italy
    1604.6×
  5. 5OhridOhrid, North Macedonia
    1604.6×
  6. 6TetovoTetovo, North Macedonia
    1594.5×
  7. 7KavadarciKavadarci, North Macedonia
    1554.1×
  8. 8PrilepPrilep, North Macedonia
    1544.0×
  9. 9GostivarGostivar, North Macedonia
    1523.8×
  10. 10BihaćFederation of B&H, Bosnia and Herzegovina
    1523.8×
  11. 11Novo MestoUrban Municipality of Novo Mesto, Slovenia
    1463.6×
  12. 12LjubljanaLjubljana, Slovenia
    1423.5×
  13. 13VelesVeles, North Macedonia
    1373.3×
  14. 14GjilanGjilan, Kosovo
    1212.9×
  15. 15BitolaBitola, North Macedonia
    1192.9×
  16. 16San Felice A CancelloCampania, Italy
    1182.8×
  17. 17BelgradeCentral Serbia, Serbia
    1162.8×
  18. 18GrajewoPodlasie, Poland
    1162.8×
  19. 19Nocera InferioreCampania, Italy
    1102.6×
  20. 20TurinPiedmont, Italy
    1052.5×
  21. 21CeljeUrban Municipality of Celje, Slovenia
    1042.4×
  22. 22MitrovicëMitrovica, Kosovo
    1022.4×
  23. 23PesaroThe Marches, Italy
    1002.3×
  24. 24PátraWest Greece, Greece
    992.3×
  25. 25SkopjeGrad Skopje, North Macedonia
    992.3×
  26. 26BeneventoCampania, Italy
    972.2×
  27. 27KoprivnicaKoprivnica-Križevci, Croatia
    962.2×
  28. 28TrbovljeMunicipality of Trbovlje, Slovenia
    942.2×
  29. 29LecceApulia, Italy
    942.1×
  30. 30PejëPec, Kosovo
    932.1×
  31. 31KranjUrban Municipality of Kranj, Slovenia
    922.1×
  32. 32Cava Dè TirreniCampania, Italy
    902.0×
  33. 33Kosovo PoljePristina, Kosovo
    892.0×
  34. 33KochaniKochani, North Macedonia
    892.0×
  35. 33GevgelijaGevgelija, North Macedonia
    892.0×
  36. 36ThorntonColorado, United States
    892.0×
  37. 37Cluj-NapocaCluj County, Romania
    881.9×
  38. 38KourouGuyane, French Guiana
    871.9×
  39. 39MostarFederation of B&H, Bosnia and Herzegovina
    871.9×
  40. 40San SeveroApulia, Italy
    841.8×
  41. 41IlindenIlinden, North Macedonia
    831.7×
  42. 42CayenneGuyane, French Guiana
    821.7×
  43. 43PristinaPristina, Kosovo
    811.7×
  44. 44WolfsbergCarinthia, Austria
    811.7×
  45. 45BailénAndalusia, Spain
    801.6×
  46. 46NaplesCampania, Italy
    801.6×
  47. 46CasertaCampania, Italy
    801.6×
  48. 48PrievidzaTrenčín Region, Slovakia
    781.6×
  49. 48GreeleyColorado, United States
    781.6×
  50. 50BolzanoTrentino-Alto Adige, Italy
    771.6×
  51. 51KošiceKošice Region, Slovakia
    771.5×
  52. 52SenecBratislava Region, Slovakia
    771.5×
  53. 53LiberpolisCounty of Osijek-Baranja, Croatia
    761.5×
  54. 54PrizrenPrizren, Kosovo
    761.5×
  55. 54AvignonProvence-Alpes-Côte d'Azur, France
    761.5×
  56. 56CodleaBrașov County, Romania
    761.5×
  57. 56PartizánskeTrenčín Region, Slovakia
    761.5×
  58. 58SenicaTrnava Region, Slovakia
    751.5×
  59. 58PezinokBratislava Region, Slovakia
    751.5×
  60. 60Banská BystricaBanská Bystrica Region, Slovakia
    751.5×
  61. 61LučenecBanská Bystrica Region, Slovakia
    741.4×
  62. 62ValenceAuvergne-Rhône-Alpes, France
    741.4×
  63. 63TrebišovKošice Region, Slovakia
    741.4×
  64. 63LublinLublin, Poland
    741.4×
  65. 65Vranov nad TopľouPrešov Region, Slovakia
    741.4×
  66. 65OtwockMazovia, Poland
    741.4×
  67. 67Ceglie MessapicaApulia, Italy
    741.4×
  68. 68Fort CollinsColorado, United States
    731.4×
  69. 69Popeşti-LeordeniIlfov, Romania
    731.4×
  70. 69ZvolenBanská Bystrica Region, Slovakia
    731.4×
  71. 71CasamassimaApulia, Italy
    721.4×
  72. 72CraiovaDolj, Romania
    721.4×
  73. 72BariApulia, Italy
    721.4×
  74. 74VoluntariIlfov, Romania
    721.4×
  75. 74Žiar nad HronomBanská Bystrica Region, Slovakia
    721.4×
  76. 76AugustówPodlasie, Poland
    721.3×
  77. 76ValdemoroMadrid, Spain
    721.3×
  78. 78RužomberokŽilina Region, Slovakia
    711.3×
  79. 79ŽilinaŽilina Region, Slovakia
    711.3×
  80. 80BratislavaBratislava Region, Slovakia
    711.3×
  81. 81IzegemFlanders, Belgium
    701.3×
  82. 81Devínska Nová VesBratislava Region, Slovakia
    701.3×
  83. 81MonopoliApulia, Italy
    701.3×
  84. 84SallanchesAuvergne-Rhône-Alpes, France
    701.3×
  85. 84Liptovský Mikulᚎilina Region, Slovakia
    701.3×
  86. 84BrindisiApulia, Italy
    701.3×
  87. 84MariborUrban Municipality of Maribor, Slovenia
    701.3×
  88. 88MadridMadrid, Spain
    701.3×
  89. 89HumennéPrešov Region, Slovakia
    701.3×
  90. 89TrenčínTrenčín Region, Slovakia
    701.3×
  91. 91TrnavaTrnava Region, Slovakia
    701.3×
  92. 92NairobiNairobi County, Kenya
    691.3×
  93. 92BucharestBucharest, Romania
    691.3×
  94. 94StarachowiceŚwiętokrzyskie, Poland
    691.3×
  95. 94SevillaAndalusia, Spain
    691.3×
  96. 94Klagenfurt am WörtherseeCarinthia, Austria
    691.3×
  97. 94DurangoBasque Country, Spain
    691.3×
  98. 98Falconara MarittimaThe Marches, Italy
    691.3×
  99. 98NogalesSonora, Mexico
    691.3×
  100. 100AlbaceteCastille-La Mancha, Spain
    691.2×
  101. 101AthensAttica, Greece
    691.2×
  102. 101BufteaIlfov, Romania
    691.2×
  103. 103ArlesProvence-Alpes-Côte d'Azur, France
    691.2×
  104. 104MonacoMunicipality of Monaco, Monaco
    681.2×
  105. 105ŁukówLublin, Poland
    681.2×
  106. 106PrešovPrešov Region, Slovakia
    681.2×
  107. 106GranadaAndalusia, Spain
    681.2×
  108. 106PhoenixArizona, United States
    681.2×
  109. 109ChaniáCrete, Greece
    681.2×
  110. 110Romans-sur-IsèreAuvergne-Rhône-Alpes, France
    671.2×
  111. 110GardanneProvence-Alpes-Côte d'Azur, France
    671.2×
  112. 110DenverColorado, United States
    671.2×
  113. 113ThessaloníkiCentral Macedonia, Greece
    671.2×
  114. 114WawerMazovia, Poland
    671.2×
  115. 114VitrollesProvence-Alpes-Côte d'Azur, France
    671.2×
  116. 114Collado-VillalbaMadrid, Spain
    671.2×
  117. 117SereďTrnava Region, Slovakia
    671.2×
  118. 118SiedlceMazovia, Poland
    671.2×
  119. 118KomárnoNitra Region, Slovakia
    671.2×
  120. 118YakimaWashington, United States
    671.2×
  121. 121les EscaldesEscaldes-Engordany, Andorra
    661.2×
  122. 121NitraNitra Region, Slovakia
    661.2×
  123. 123BiałystokPodlasie, Poland
    661.1×
  124. 124EłkWarmia-Masuria, Poland
    661.1×
  125. 124JesiThe Marches, Italy
    661.1×
  126. 124PtujUrban Municipality of Ptuj, Slovenia
    661.1×
  127. 127PúchovTrenčín Region, Slovakia
    651.1×
  128. 127AmorebietaBasque Country, Spain
    651.1×
  129. 127LongmontColorado, United States
    651.1×
  130. 130Ciudad RealCastille-La Mancha, Spain
    651.1×
  131. 130NîmesOccitanie, France
    651.1×
  132. 130CosladaMadrid, Spain
    651.1×
  133. 130AvellinoCampania, Italy
    651.1×
  134. 134MeylanAuvergne-Rhône-Alpes, France
    641.1×
  135. 134GrenobleAuvergne-Rhône-Alpes, France
    641.1×
  136. 134ModugnoApulia, Italy
    641.1×
  137. 137SuwałkiPodlasie, Poland
    631.1×
  138. 137LeónCastille and León, Spain
    631.1×
  139. 139La SpeziaLiguria, Italy
    631.0×
  140. 140WłocławekKujawsko-Pomorskie, Poland
    631.0×
  141. 140Azuqueca de HenaresCastille-La Mancha, Spain
    631.0×
  142. 142BardejovPrešov Region, Slovakia
    631.0×
  143. 143ČadcaŽilina Region, Slovakia
    621.0×
  144. 144AostaAosta Valley, Italy
    621.0×
  145. 145RadomMazovia, Poland
    621.0×
  146. 145CannesProvence-Alpes-Côte d'Azur, France
    621.0×
  147. 147FoggiaApulia, Italy
    621.0×
  148. 148KaunasKaunas, Lithuania
    611.0×
  149. 149VigoGalicia, Spain
    611.0×
  150. 150MarignaneProvence-Alpes-Côte d'Azur, France
    611.0×
  151. 150Las VegasNevada, United States
    611.0×
  152. 152MontaubanOccitanie, France
    611.0×
  153. 152Fos-sur-MerProvence-Alpes-Côte d'Azur, France
    611.0×
  154. 152OviedoAsturias, Spain
    611.0×
  155. 155KielceŚwiętokrzyskie, Poland
    611.0×
  156. 155CartagenaMurcia, Spain
    611.0×
  157. 155Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France
    611.0×
  158. 155HernaniBasque Country, Spain
    611.0×
  159. 159AmoraSetúbal, Portugal
    600.9×
  160. 159Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France
    600.9×
  161. 161ValenciaValencia, Spain
    600.9×
  162. 161Medina del CampoCastille and León, Spain
    600.9×
  163. 163HodonínSouth Moravian, Czechia
    600.9×
  164. 163OriaBasque Country, Spain
    600.9×
  165. 165TorreviejaValencia, Spain
    590.9×
  166. 165PalmaBalearic Islands, Spain
    590.9×
  167. 165LyonAuvergne-Rhône-Alpes, France
    590.9×
  168. 168AcharnésAttica, Greece
    590.9×
  169. 168SninaPrešov Region, Slovakia
    590.9×
  170. 168AlgeteMadrid, Spain
    590.9×
  171. 168AltamuraApulia, Italy
    590.9×
  172. 172IaşiIași County, Romania
    590.9×
  173. 172MartinŽilina Region, Slovakia
    590.9×
  174. 172OurenseGalicia, Spain
    590.9×
  175. 172NogalesArizona, United States
    590.9×
  176. 176Alcalá de HenaresMadrid, Spain
    590.9×
  177. 176OmahaNebraska, United States
    590.9×
  178. 176Jurupa ValleyCalifornia, United States
    590.9×
  179. 176SheridanWyoming, United States
    590.9×
  180. 180KętrzynWarmia-Masuria, Poland
    580.9×
  181. 180ToulouseOccitanie, France
    580.9×
  182. 182AlbertvilleAuvergne-Rhône-Alpes, France
    580.9×
  183. 182MóstolesMadrid, Spain
    580.9×
  184. 182OntarioCalifornia, United States
    580.9×
  185. 185RenoNevada, United States
    580.8×
  186. 186MalackyBratislava Region, Slovakia
    580.8×
  187. 186KoperUrban Municipality of Koper, Slovenia
    580.8×
  188. 188HillegomSouth Holland, The Netherlands
    570.8×
  189. 189ViennaVienna, Austria
    570.8×
  190. 189PerchtoldsdorfLower Austria, Austria
    570.8×
  191. 189GivorsAuvergne-Rhône-Alpes, France
    570.8×
  192. 192LiepājaLiepaja, Latvia
    570.8×
  193. 192JaénAndalusia, Spain
    570.8×
  194. 192TarbesOccitanie, France
    570.8×
  195. 192MagnaUtah, United States
    570.8×
  196. 196AsprópyrgosAttica, Greece
    570.8×
  197. 196RēzekneRēzekne, Latvia
    570.8×
  198. 196LegionowoMazovia, Poland
    570.8×
  199. 196ArucasCanary Islands, Spain
    570.8×
  200. 196Mont-de-MarsanNew Aquitaine, France
    570.8×

Top 200 of 1,177 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 13, 2023, smogrank.com/history/2023-01-13 (accessed 2 Oct 2026).

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