SmogRank / History / March 18, 2023

Most polluted cities on March 18, 2023

1,185 cities ranked by their average PM2.5 over the day; the worst was Banja Luka, Bosnia and Herzegovina, at 56.8 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.

← Banja Luka 56.8 µg/m³ 50 µg/m³15 WHO 24-hour guideline0
Every city ranked for March 18, 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. 1Banja LukaSrpska, Bosnia and Herzegovina
    1523.8×
  2. 2Czechowice-DziedziceSilesia, Poland
    1343.3×
  3. 3BohumínMoravian-Silesian Region, Czechia
    1333.2×
  4. 4Nakło nad NoteciąKujawsko-Pomorskie, Poland
    1102.6×
  5. 5Jastrzębie ZdrójSilesia, Poland
    1092.6×
  6. 6KoprivnicaKoprivnica-Križevci, Croatia
    1082.6×
  7. 7Bielsko-BialaSilesia, Poland
    982.3×
  8. 8Frýdek-MístekMoravian-Silesian Region, Czechia
    962.2×
  9. 9GjilanGjilan, Kosovo
    952.2×
  10. 10KavadarciKavadarci, North Macedonia
    942.1×
  11. 11GevgelijaGevgelija, North Macedonia
    932.1×
  12. 12MariglianoCampania, Italy
    922.1×
  13. 13Gorzów WielkopolskiLubusz, Poland
    922.1×
  14. 14Novo MestoUrban Municipality of Novo Mesto, Slovenia
    902.0×
  15. 15CeljeUrban Municipality of Celje, Slovenia
    902.0×
  16. 16RacibórzSilesia, Poland
    892.0×
  17. 17KościanGreater Poland, Poland
    892.0×
  18. 18KrakówLesser Poland, Poland
    892.0×
  19. 19WłocławekKujawsko-Pomorskie, Poland
    881.9×
  20. 20LęborkPomerania, Poland
    881.9×
  21. 21HavířovMoravian-Silesian Region, Czechia
    861.8×
  22. 22KościerzynaPomerania, Poland
    851.8×
  23. 23Spišská Nová VesKošice Region, Slovakia
    841.8×
  24. 24TetovoTetovo, North Macedonia
    831.8×
  25. 25ToruńKujawsko-Pomorskie, Poland
    831.7×
  26. 26PtujUrban Municipality of Ptuj, Slovenia
    821.7×
  27. 27GdyniaPomerania, Poland
    821.7×
  28. 28GostivarGostivar, North Macedonia
    821.7×
  29. 28NysaOpole Voivodeship, Poland
    821.7×
  30. 28TurinPiedmont, Italy
    821.7×
  31. 31BitolaBitola, North Macedonia
    811.7×
  32. 31KadaňÚstí nad Labem Region, Czechia
    811.7×
  33. 33GdańskPomerania, Poland
    811.7×
  34. 34ŚwiecieKujawsko-Pomorskie, Poland
    791.6×
  35. 35AvellinoCampania, Italy
    791.6×
  36. 36TrebišovKošice Region, Slovakia
    791.6×
  37. 36KatowiceSilesia, Poland
    791.6×
  38. 38KarvináMoravian-Silesian Region, Czechia
    781.6×
  39. 38BeneventoCampania, Italy
    781.6×
  40. 40StrumicaStrumica, North Macedonia
    781.6×
  41. 41PrilepPrilep, North Macedonia
    771.6×
  42. 42ŁaskŁódź Voivodeship, Poland
    771.5×
  43. 43NiskoSubcarpathia, Poland
    771.5×
  44. 44SkopjeGrad Skopje, North Macedonia
    771.5×
  45. 45Cluj-NapocaCluj County, Romania
    761.5×
  46. 45PrešovPrešov Region, Slovakia
    761.5×
  47. 45MitrovicëMitrovica, Kosovo
    761.5×
  48. 48KielSchleswig-Holstein, Germany
    761.5×
  49. 48SzczecinWest Pomerania, Poland
    761.5×
  50. 50TumbaStockholm, Sweden
    761.5×
  51. 50PoznańGreater Poland, Poland
    761.5×
  52. 52PrzemyślSubcarpathia, Poland
    751.5×
  53. 53HumennéPrešov Region, Slovakia
    751.5×
  54. 53KutnoŁódź Voivodeship, Poland
    751.5×
  55. 53TrbovljeMunicipality of Trbovlje, Slovenia
    751.5×
  56. 56KalmarKalmar, Sweden
    741.4×
  57. 57PristinaPristina, Kosovo
    741.4×
  58. 58BelgradeCentral Serbia, Serbia
    741.4×
  59. 59KošiceKošice Region, Slovakia
    741.4×
  60. 59BerounCentral Bohemia, Czechia
    741.4×
  61. 61IaşiIași County, Romania
    731.4×
  62. 62LučenecBanská Bystrica Region, Slovakia
    731.4×
  63. 62StocktonCalifornia, United States
    731.4×
  64. 64Vranov nad TopľouPrešov Region, Slovakia
    731.4×
  65. 64SopotPomerania, Poland
    731.4×
  66. 64MariborUrban Municipality of Maribor, Slovenia
    731.4×
  67. 67Jelenia GóraLower Silesia, Poland
    731.4×
  68. 68IlindenIlinden, North Macedonia
    721.4×
  69. 68ŽilinaŽilina Region, Slovakia
    721.4×
  70. 70RadomskoŁódź Voivodeship, Poland
    721.4×
  71. 70BydgoszczKujawsko-Pomorskie, Poland
    721.4×
  72. 70ParklandWashington, United States
    721.4×
  73. 73NeuruppinBrandenburg, Germany
    721.4×
  74. 73AcerraCampania, Italy
    721.4×
  75. 75EberswaldeBrandenburg, Germany
    721.4×
  76. 76LublinLublin, Poland
    711.3×
  77. 76GrazStyria, Austria
    711.3×
  78. 78San SeveroApulia, Italy
    711.3×
  79. 79FlensburgSchleswig-Holstein, Germany
    711.3×
  80. 79OstravaMoravian-Silesian Region, Czechia
    711.3×
  81. 81RadomMazovia, Poland
    711.3×
  82. 81RužomberokŽilina Region, Slovakia
    711.3×
  83. 81KranjUrban Municipality of Kranj, Slovenia
    711.3×
  84. 84StralsundMecklenburg-Vorpommern, Germany
    701.3×
  85. 84PúchovTrenčín Region, Slovakia
    701.3×
  86. 84AostaAosta Valley, Italy
    701.3×
  87. 87CodleaBrașov County, Romania
    701.3×
  88. 87Valašské MeziříčíZlín, Czechia
    701.3×
  89. 89NaplesCampania, Italy
    701.3×
  90. 90ŚwinoujścieWest Pomerania, Poland
    701.3×
  91. 91PilsenPlzeň Region, Czechia
    691.3×
  92. 92PřerovOlomouc Region, Czechia
    691.3×
  93. 93ČadcaŽilina Region, Slovakia
    691.2×
  94. 94SavonaLiguria, Italy
    691.2×
  95. 95KorçëKorçë County, Albania
    681.2×
  96. 95UstkaPomerania, Poland
    681.2×
  97. 97ChaniáCrete, Greece
    681.2×
  98. 97ŁódźŁódź Voivodeship, Poland
    681.2×
  99. 99KladnoCentral Bohemia, Czechia
    681.2×
  100. 99San Felice A CancelloCampania, Italy
    681.2×
  101. 101VisbyGotland, Sweden
    681.2×
  102. 101Grants PassOregon, United States
    681.2×
  103. 101LiberpolisCounty of Osijek-Baranja, Croatia
    681.2×
  104. 104OlomoucOlomouc Region, Czechia
    681.2×
  105. 105ŻyrardówMazovia, Poland
    671.2×
  106. 105ZamośćLublin, Poland
    671.2×
  107. 105Nocera InferioreCampania, Italy
    671.2×
  108. 108CraiovaDolj, Romania
    671.2×
  109. 109MostÚstí nad Labem Region, Czechia
    671.2×
  110. 109LitvínovÚstí nad Labem Region, Czechia
    671.2×
  111. 111PátraWest Greece, Greece
    671.2×
  112. 112Upplands VäsbyStockholm, Sweden
    661.2×
  113. 112Kempten (Allgäu)Bavaria, Germany
    661.2×
  114. 112BremerhavenBremen, Germany
    661.2×
  115. 112LjubljanaLjubljana, Slovenia
    661.2×
  116. 116Ústí nad LabemÚstí nad Labem Region, Czechia
    661.1×
  117. 116PraguePrague, Czechia
    661.1×
  118. 118DěčínÚstí nad Labem Region, Czechia
    661.1×
  119. 118Coconut CreekFlorida, United States
    661.1×
  120. 120MonopoliApulia, Italy
    661.1×
  121. 120GalatinaApulia, Italy
    661.1×
  122. 122StarachowiceŚwiętokrzyskie, Poland
    661.1×
  123. 122ValenciaValencia, Spain
    661.1×
  124. 122AltamuraApulia, Italy
    661.1×
  125. 125JarosławSubcarpathia, Poland
    651.1×
  126. 125MarktredwitzBavaria, Germany
    651.1×
  127. 125MartinŽilina Region, Slovakia
    651.1×
  128. 125WrocławLower Silesia, Poland
    651.1×
  129. 125DurrësDurrës County, Albania
    651.1×
  130. 130StockholmStockholm, Sweden
    651.1×
  131. 130SollentunaStockholm, Sweden
    651.1×
  132. 130TraunUpper Austria, Austria
    651.1×
  133. 130NeubrandenburgMecklenburg-Vorpommern, Germany
    651.1×
  134. 130LindauBavaria, Germany
    651.1×
  135. 130ZvolenBanská Bystrica Region, Slovakia
    651.1×
  136. 136Banská BystricaBanská Bystrica Region, Slovakia
    651.1×
  137. 137BardejovPrešov Region, Slovakia
    651.1×
  138. 137ŁukówLublin, Poland
    651.1×
  139. 137RostockMecklenburg-Vorpommern, Germany
    651.1×
  140. 137PłockMazovia, Poland
    651.1×
  141. 141Český TěšínMoravian-Silesian Region, Czechia
    641.1×
  142. 141BariApulia, Italy
    641.1×
  143. 143WolfsbergCarinthia, Austria
    641.1×
  144. 143JesiThe Marches, Italy
    641.1×
  145. 143MostarFederation of B&H, Bosnia and Herzegovina
    641.1×
  146. 146BurghausenBavaria, Germany
    641.1×
  147. 146Falconara MarittimaThe Marches, Italy
    641.1×
  148. 148KielceŚwiętokrzyskie, Poland
    641.1×
  149. 148PejëPec, Kosovo
    641.1×
  150. 148LuckenwaldeBrandenburg, Germany
    641.1×
  151. 148HamburgHamburg, Germany
    641.1×
  152. 152WittenbergeBrandenburg, Germany
    641.1×
  153. 153TepliceÚstí nad Labem Region, Czechia
    631.1×
  154. 153JihlavaVysocina, Czechia
    631.1×
  155. 155ThessaloníkiCentral Macedonia, Greece
    631.0×
  156. 155OtwockMazovia, Poland
    631.0×
  157. 155AnsfeldenUpper Austria, Austria
    631.0×
  158. 155LecceApulia, Italy
    631.0×
  159. 159BerlinState of Berlin, Germany
    631.0×
  160. 160MalmöSkåne, Sweden
    631.0×
  161. 160Klagenfurt am WörtherseeCarinthia, Austria
    631.0×
  162. 160IngolstadtBavaria, Germany
    631.0×
  163. 163PassauBavaria, Germany
    631.0×
  164. 164TorreviejaValencia, Spain
    631.0×
  165. 164GothenburgVästra Götaland, Sweden
    631.0×
  166. 164WelsUpper Austria, Austria
    631.0×
  167. 164MainzRheinland-Pfalz, Germany
    631.0×
  168. 164Brandenburg an der HavelBrandenburg, Germany
    631.0×
  169. 164MedfordOregon, United States
    631.0×
  170. 170WawerMazovia, Poland
    621.0×
  171. 171Burg bei MagdeburgSaxony-Anhalt, Germany
    621.0×
  172. 171Liptovský Mikulᚎilina Region, Slovakia
    621.0×
  173. 171OpoleOpole Voivodeship, Poland
    621.0×
  174. 171BolzanoTrentino-Alto Adige, Italy
    621.0×
  175. 175MühlhausenThuringia, Germany
    621.0×
  176. 175PardubicePardubice Region, Czechia
    621.0×
  177. 177LinzUpper Austria, Austria
    621.0×
  178. 177LiberecLiberec Region, Czechia
    621.0×
  179. 179OytenLower Saxony, Germany
    621.0×
  180. 179SokolovCarlsbad Region, Czechia
    621.0×
  181. 181MalackyBratislava Region, Slovakia
    611.0×
  182. 181LuceraApulia, Italy
    611.0×
  183. 183PrizrenPrizren, Kosovo
    611.0×
  184. 183Hradec KrálovéHradec Králové Region, Czechia
    611.0×
  185. 185NauenBrandenburg, Germany
    611.0×
  186. 186GroßostheimBavaria, Germany
    611.0×
  187. 186PezinokBratislava Region, Slovakia
    611.0×
  188. 188AmstettenLower Austria, Austria
    611.0×
  189. 188TeltowBrandenburg, Germany
    611.0×
  190. 188Mladá BoleslavCentral Bohemia, Czechia
    611.0×
  191. 188PesaroThe Marches, Italy
    611.0×
  192. 192KozániWest Macedonia, Greece
    610.9×
  193. 192GroningenGroningen, The Netherlands
    610.9×
  194. 192MagdeburgSaxony-Anhalt, Germany
    610.9×
  195. 192ItzehoeSchleswig-Holstein, Germany
    610.9×
  196. 192GüstrowMecklenburg-Vorpommern, Germany
    610.9×
  197. 192CoburgBavaria, Germany
    610.9×
  198. 192TřinecMoravian-Silesian Region, Czechia
    610.9×
  199. 199KelheimBavaria, Germany
    600.9×
  200. 199ThionvilleGrand Est, France
    600.9×

Top 200 of 1,185 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, March 18, 2023, smogrank.com/history/2023-03-18 (accessed 2 Oct 2026).

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