SmogRank / History / February 7, 2023

Most polluted cities on February 7, 2023

1,179 cities ranked by their average PM2.5 over the day; the worst was Kraków, Poland, at 95.6 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.

Bad-air episodes during February 7, 2023. All episodes.

← Kraków 95.6 µg/m³ 90 µg/m³15 WHO 24-hour guideline
Every city ranked for February 7, 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. 1KrakówLesser Poland, Poland
    1796.4×
  2. 2RadomskoŁódź Voivodeship, Poland
    1776.2×
  3. 3Jastrzębie ZdrójSilesia, Poland
    1766.0×
  4. 4Bielsko-BialaSilesia, Poland
    1756.0×
  5. 5RacibórzSilesia, Poland
    1745.8×
  6. 6BohumínMoravian-Silesian Region, Czechia
    1735.8×
  7. 7KatowiceSilesia, Poland
    1705.5×
  8. 8RzeszówSubcarpathia, Poland
    1634.8×
  9. 9KarvináMoravian-Silesian Region, Czechia
    1624.8×
  10. 10Banja LukaSrpska, Bosnia and Herzegovina
    1624.8×
  11. 11OstravaMoravian-Silesian Region, Czechia
    1614.6×
  12. 12Český TěšínMoravian-Silesian Region, Czechia
    1584.4×
  13. 13HavířovMoravian-Silesian Region, Czechia
    1574.3×
  14. 14KrapkowiceOpole Voivodeship, Poland
    1574.2×
  15. 15RužomberokŽilina Region, Slovakia
    1564.1×
  16. 16ŁaskŁódź Voivodeship, Poland
    1554.1×
  17. 17Gorzów WielkopolskiLubusz, Poland
    1554.0×
  18. 18Jelenia GóraLower Silesia, Poland
    1544.0×
  19. 19KrosnoSubcarpathia, Poland
    1533.9×
  20. 20DębicaSubcarpathia, Poland
    1523.8×
  21. 21Frýdek-MístekMoravian-Silesian Region, Czechia
    1523.8×
  22. 22TřinecMoravian-Silesian Region, Czechia
    1493.7×
  23. 23ŻaryLubusz, Poland
    1473.6×
  24. 24TarnówLesser Poland, Poland
    1463.6×
  25. 24KaliszGreater Poland, Poland
    1463.6×
  26. 26Novo MestoUrban Municipality of Novo Mesto, Slovenia
    1453.6×
  27. 27ČadcaŽilina Region, Slovakia
    1453.6×
  28. 28Valašské MeziříčíZlín, Czechia
    1433.5×
  29. 29WrocławLower Silesia, Poland
    1423.5×
  30. 30JasłoSubcarpathia, Poland
    1403.4×
  31. 31Kędzierzyn-KoźleOpole Voivodeship, Poland
    1393.4×
  32. 32OpavaMoravian-Silesian Region, Czechia
    1383.4×
  33. 33KłodzkoLower Silesia, Poland
    1363.3×
  34. 34WłocławekKujawsko-Pomorskie, Poland
    1363.3×
  35. 35DěčínÚstí nad Labem Region, Czechia
    1353.3×
  36. 36TepliceÚstí nad Labem Region, Czechia
    1343.3×
  37. 37MostÚstí nad Labem Region, Czechia
    1343.3×
  38. 38KielceŚwiętokrzyskie, Poland
    1313.2×
  39. 39PardubicePardubice Region, Czechia
    1313.2×
  40. 40Czechowice-DziedziceSilesia, Poland
    1313.2×
  41. 41LublinLublin, Poland
    1293.1×
  42. 42Spišská Nová VesKošice Region, Slovakia
    1283.1×
  43. 43BerounCentral Bohemia, Czechia
    1283.1×
  44. 44Banská BystricaBanská Bystrica Region, Slovakia
    1263.0×
  45. 44OpoleOpole Voivodeship, Poland
    1263.0×
  46. 46Liptovský Mikulᚎilina Region, Slovakia
    1253.0×
  47. 47NiskoSubcarpathia, Poland
    1243.0×
  48. 48Mladá BoleslavCentral Bohemia, Czechia
    1222.9×
  49. 49CeljeUrban Municipality of Celje, Slovenia
    1162.8×
  50. 50ZvolenBanská Bystrica Region, Slovakia
    1162.8×
  51. 51MielecSubcarpathia, Poland
    1152.7×
  52. 52JarosławSubcarpathia, Poland
    1142.7×
  53. 53KranjUrban Municipality of Kranj, Slovenia
    1142.7×
  54. 54PraguePrague, Czechia
    1132.7×
  55. 54LitvínovÚstí nad Labem Region, Czechia
    1132.7×
  56. 56České BudějoviceSouth Bohemian Region, Czechia
    1122.7×
  57. 57LučenecBanská Bystrica Region, Slovakia
    1122.7×
  58. 58KladnoCentral Bohemia, Czechia
    1112.6×
  59. 59SzczecinWest Pomerania, Poland
    1102.6×
  60. 60TrbovljeMunicipality of Trbovlje, Slovenia
    1092.6×
  61. 61ŽilinaŽilina Region, Slovakia
    1092.6×
  62. 61JihlavaVysocina, Czechia
    1092.6×
  63. 63PoznańGreater Poland, Poland
    1092.6×
  64. 64OtwockMazovia, Poland
    1092.6×
  65. 65HraniceOlomouc Region, Czechia
    1082.6×
  66. 66BitolaBitola, North Macedonia
    1082.6×
  67. 67RadomMazovia, Poland
    1082.5×
  68. 68Ústí nad LabemÚstí nad Labem Region, Czechia
    1072.5×
  69. 69NysaOpole Voivodeship, Poland
    1072.5×
  70. 70MalackyBratislava Region, Slovakia
    1062.5×
  71. 71PruszkówMazovia, Poland
    1052.5×
  72. 71ZlínZlín, Czechia
    1052.5×
  73. 73Nakło nad NoteciąKujawsko-Pomorskie, Poland
    1052.5×
  74. 74KutnoŁódź Voivodeship, Poland
    1042.5×
  75. 75PtujUrban Municipality of Ptuj, Slovenia
    1042.4×
  76. 76WawerMazovia, Poland
    1032.4×
  77. 77KroměřížZlín, Czechia
    1022.4×
  78. 78Zielona GóraLubusz, Poland
    992.3×
  79. 79Halle (Saale)Saxony-Anhalt, Germany
    992.3×
  80. 80GevgelijaGevgelija, North Macedonia
    992.3×
  81. 81KomárnoNitra Region, Slovakia
    992.3×
  82. 82StarachowiceŚwiętokrzyskie, Poland
    982.3×
  83. 83HodonínSouth Moravian, Czechia
    982.3×
  84. 84BratislavaBratislava Region, Slovakia
    972.2×
  85. 85Hradec KrálovéHradec Králové Region, Czechia
    962.2×
  86. 86ZamośćLublin, Poland
    962.2×
  87. 87BihaćFederation of B&H, Bosnia and Herzegovina
    962.2×
  88. 88PřerovOlomouc Region, Czechia
    952.2×
  89. 89PilsenPlzeň Region, Czechia
    952.2×
  90. 89Blankenfelde-MahlowBrandenburg, Germany
    952.2×
  91. 91NitraNitra Region, Slovakia
    952.2×
  92. 92EvergemFlanders, Belgium
    942.1×
  93. 93PrzemyślSubcarpathia, Poland
    932.1×
  94. 94ŻyrardówMazovia, Poland
    932.1×
  95. 95SiedlceMazovia, Poland
    932.1×
  96. 95LjubljanaLjubljana, Slovenia
    932.1×
  97. 97TeltowBrandenburg, Germany
    922.1×
  98. 98SenecBratislava Region, Slovakia
    912.0×
  99. 99MartinŽilina Region, Slovakia
    912.0×
  100. 100CottbusBrandenburg, Germany
    912.0×
  101. 100BerlinState of Berlin, Germany
    912.0×
  102. 102Bernau bei BerlinBrandenburg, Germany
    902.0×
  103. 103SenicaTrnava Region, Slovakia
    902.0×
  104. 104WarsawMazovia, Poland
    902.0×
  105. 104IzegemFlanders, Belgium
    902.0×
  106. 104Bitterfeld-WolfenSaxony-Anhalt, Germany
    902.0×
  107. 107ŽideniceSouth Moravian, Czechia
    902.0×
  108. 108MagdeburgSaxony-Anhalt, Germany
    902.0×
  109. 109LegionowoMazovia, Poland
    902.0×
  110. 109WaregemFlanders, Belgium
    902.0×
  111. 109MenenFlanders, Belgium
    902.0×
  112. 109LuckenwaldeBrandenburg, Germany
    902.0×
  113. 113StrumicaStrumica, North Macedonia
    892.0×
  114. 114CraiovaDolj, Romania
    892.0×
  115. 115BelgradeCentral Serbia, Serbia
    892.0×
  116. 115KöthenSaxony-Anhalt, Germany
    892.0×
  117. 117ŁukówLublin, Poland
    881.9×
  118. 117IlindenIlinden, North Macedonia
    881.9×
  119. 119ZnojmoSouth Moravian, Czechia
    881.9×
  120. 120MühlhausenThuringia, Germany
    881.9×
  121. 121GostivarGostivar, North Macedonia
    881.9×
  122. 121GreizThuringia, Germany
    881.9×
  123. 123LiberecLiberec Region, Czechia
    881.9×
  124. 124KortrijkFlanders, Belgium
    871.9×
  125. 125Konstancin-JeziornaMazovia, Poland
    871.9×
  126. 125KlosterneuburgLower Austria, Austria
    871.9×
  127. 127TetovoTetovo, North Macedonia
    861.9×
  128. 128WeißenfelsSaxony-Anhalt, Germany
    861.9×
  129. 128ŚwiecieKujawsko-Pomorskie, Poland
    861.9×
  130. 130EberswaldeBrandenburg, Germany
    861.8×
  131. 131MariborUrban Municipality of Maribor, Slovenia
    851.8×
  132. 132JenaThuringia, Germany
    851.8×
  133. 132BrnoSouth Moravian, Czechia
    851.8×
  134. 134SkopjeGrad Skopje, North Macedonia
    851.8×
  135. 135RoeselareFlanders, Belgium
    851.8×
  136. 135DunkirkHauts-de-France, France
    851.8×
  137. 135SereďTrnava Region, Slovakia
    851.8×
  138. 135KadaňÚstí nad Labem Region, Czechia
    851.8×
  139. 139AltenburgThuringia, Germany
    851.8×
  140. 140HumennéPrešov Region, Slovakia
    841.8×
  141. 141TrenčínTrenčín Region, Slovakia
    841.8×
  142. 141Devínska Nová VesBratislava Region, Slovakia
    841.8×
  143. 143OlomoucOlomouc Region, Czechia
    841.8×
  144. 144Žďár nad SázavouVysocina, Czechia
    841.8×
  145. 145PerchtoldsdorfLower Austria, Austria
    831.8×
  146. 146LęborkPomerania, Poland
    831.8×
  147. 147WeidenBavaria, Germany
    831.7×
  148. 147PúchovTrenčín Region, Slovakia
    831.7×
  149. 149HalberstadtSaxony-Anhalt, Germany
    821.7×
  150. 149ErfurtThuringia, Germany
    821.7×
  151. 151Sankt PöltenLower Austria, Austria
    821.7×
  152. 151BeverenFlanders, Belgium
    821.7×
  153. 153PezinokBratislava Region, Slovakia
    821.7×
  154. 154BogatyniaLower Silesia, Poland
    821.7×
  155. 155DouaiHauts-de-France, France
    821.7×
  156. 155CasamassimaApulia, Italy
    821.7×
  157. 157RoubaixHauts-de-France, France
    811.7×
  158. 158CalaisHauts-de-France, France
    811.7×
  159. 159ViennaVienna, Austria
    811.7×
  160. 159ToruńKujawsko-Pomorskie, Poland
    811.7×
  161. 161BraunschweigLower Saxony, Germany
    801.7×
  162. 162DaxNew Aquitaine, France
    801.6×
  163. 163LochristiFlanders, Belgium
    801.6×
  164. 163MarktredwitzBavaria, Germany
    801.6×
  165. 163Žiar nad HronomBanská Bystrica Region, Slovakia
    801.6×
  166. 166KavadarciKavadarci, North Macedonia
    801.6×
  167. 166AnsfeldenUpper Austria, Austria
    801.6×
  168. 166AmstettenLower Austria, Austria
    801.6×
  169. 169WeimarThuringia, Germany
    791.6×
  170. 170ParedesPorto, Portugal
    791.6×
  171. 170SalzgitterLower Saxony, Germany
    791.6×
  172. 172Königs WusterhausenBrandenburg, Germany
    791.6×
  173. 172DieppeNormandy, France
    791.6×
  174. 174GentFlanders, Belgium
    781.6×
  175. 175AlbanyGeorgia, United States
    781.6×
  176. 176PrilepPrilep, North Macedonia
    781.6×
  177. 176Brandenburg an der HavelBrandenburg, Germany
    781.6×
  178. 176ŚwinoujścieWest Pomerania, Poland
    781.6×
  179. 179MoulinsAuvergne-Rhône-Alpes, France
    781.6×
  180. 179LisieuxNormandy, France
    781.6×
  181. 181Burg bei MagdeburgSaxony-Anhalt, Germany
    781.6×
  182. 182DrammenBuskerud, Norway
    771.6×
  183. 183PartizánskeTrenčín Region, Slovakia
    771.5×
  184. 184BardejovPrešov Region, Slovakia
    771.5×
  185. 184ValenciennesHauts-de-France, France
    771.5×
  186. 186NeuruppinBrandenburg, Germany
    771.5×
  187. 186TrnavaTrnava Region, Slovakia
    771.5×
  188. 188NordhausenThuringia, Germany
    771.5×
  189. 189StabroekFlanders, Belgium
    761.5×
  190. 189SallanchesAuvergne-Rhône-Alpes, France
    761.5×
  191. 191Cluj-NapocaCluj County, Romania
    761.5×
  192. 191WelsUpper Austria, Austria
    761.5×
  193. 191ZwijndrechtFlanders, Belgium
    761.5×
  194. 191Frankfurt (Oder)Brandenburg, Germany
    761.5×
  195. 191BydgoszczKujawsko-Pomorskie, Poland
    761.5×
  196. 196Schwedt (Oder)Brandenburg, Germany
    761.5×
  197. 196HandlováTrenčín Region, Slovakia
    761.5×
  198. 198MödlingLower Austria, Austria
    751.5×
  199. 199PrešovPrešov Region, Slovakia
    751.5×
  200. 199AntwerpFlanders, Belgium
    751.5×

Top 200 of 1,179 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, February 7, 2023, smogrank.com/history/2023-02-07 (accessed 2 Oct 2026).

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