SmogRank / History / April 22, 2023

Most polluted cities on April 22, 2023

1,196 cities ranked by their average PM2.5 over the day; the worst was Greenville, United States, at 39.7 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.

Bad-air episodes during April 22, 2023. All episodes.

← Greenville 39.7 µg/m³ 30 µg/m³15 WHO 24-hour guideline0
Every city ranked for April 22, 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. 1GreenvilleNorth Carolina, United States
    1112.6×
  2. 2Czechowice-DziedziceSilesia, Poland
    1062.5×
  3. 3RadomskoŁódź Voivodeship, Poland
    992.3×
  4. 4RacibórzSilesia, Poland
    972.3×
  5. 5BohumínMoravian-Silesian Region, Czechia
    902.0×
  6. 6OtwockMazovia, Poland
    892.0×
  7. 7Jastrzębie ZdrójSilesia, Poland
    881.9×
  8. 8GevgelijaGevgelija, North Macedonia
    871.9×
  9. 9ŁaskŁódź Voivodeship, Poland
    871.9×
  10. 9Novo MestoUrban Municipality of Novo Mesto, Slovenia
    871.9×
  11. 11KłodzkoLower Silesia, Poland
    841.8×
  12. 12NiskoSubcarpathia, Poland
    831.8×
  13. 12Jelenia GóraLower Silesia, Poland
    831.8×
  14. 14KarvináMoravian-Silesian Region, Czechia
    831.7×
  15. 15HavířovMoravian-Silesian Region, Czechia
    821.7×
  16. 16KaliszGreater Poland, Poland
    821.7×
  17. 17DěčínÚstí nad Labem Region, Czechia
    821.7×
  18. 18Český TěšínMoravian-Silesian Region, Czechia
    821.7×
  19. 19OstravaMoravian-Silesian Region, Czechia
    811.7×
  20. 20EvergemFlanders, Belgium
    811.7×
  21. 21BelgradeCentral Serbia, Serbia
    811.7×
  22. 22's-GravenzandeSouth Holland, The Netherlands
    801.7×
  23. 22Bielsko-BialaSilesia, Poland
    801.7×
  24. 24LublinLublin, Poland
    801.6×
  25. 25KrakówLesser Poland, Poland
    791.6×
  26. 26StarachowiceŚwiętokrzyskie, Poland
    781.6×
  27. 26KomárnoNitra Region, Slovakia
    781.6×
  28. 28MaassluisSouth Holland, The Netherlands
    781.6×
  29. 29Valašské MeziříčíZlín, Czechia
    771.6×
  30. 30ŻyrardówMazovia, Poland
    771.5×
  31. 30AntwerpFlanders, Belgium
    771.5×
  32. 32MonsWallonia, Belgium
    771.5×
  33. 33TetovoTetovo, North Macedonia
    771.5×
  34. 33TrnavaTrnava Region, Slovakia
    771.5×
  35. 35RotterdamSouth Holland, The Netherlands
    771.5×
  36. 35ZwijndrechtFlanders, Belgium
    771.5×
  37. 37KatowiceSilesia, Poland
    761.5×
  38. 38KrosnoSubcarpathia, Poland
    761.5×
  39. 38The HagueSouth Holland, The Netherlands
    761.5×
  40. 38MenenFlanders, Belgium
    761.5×
  41. 38KoprivnicaKoprivnica-Križevci, Croatia
    761.5×
  42. 42LochristiFlanders, Belgium
    751.5×
  43. 42IzegemFlanders, Belgium
    751.5×
  44. 44SpijkenisseSouth Holland, The Netherlands
    751.5×
  45. 44RoubaixHauts-de-France, France
    751.5×
  46. 44SereďTrnava Region, Slovakia
    751.5×
  47. 47RoeselareFlanders, Belgium
    751.5×
  48. 47LuckenwaldeBrandenburg, Germany
    751.5×
  49. 49KapellenFlanders, Belgium
    751.5×
  50. 49BeverenFlanders, Belgium
    751.5×
  51. 49Kędzierzyn-KoźleOpole Voivodeship, Poland
    751.5×
  52. 52RidderkerkSouth Holland, The Netherlands
    741.4×
  53. 52BéthuneHauts-de-France, France
    741.4×
  54. 52SenicaTrnava Region, Slovakia
    741.4×
  55. 55WaregemFlanders, Belgium
    741.4×
  56. 55OpoleOpole Voivodeship, Poland
    741.4×
  57. 57PřerovOlomouc Region, Czechia
    741.4×
  58. 58KościanGreater Poland, Poland
    741.4×
  59. 59GjilanGjilan, Kosovo
    741.4×
  60. 59LilleHauts-de-France, France
    741.4×
  61. 59DouaiHauts-de-France, France
    741.4×
  62. 62KielceŚwiętokrzyskie, Poland
    741.4×
  63. 62SchiedamSouth Holland, The Netherlands
    741.4×
  64. 62StabroekFlanders, Belgium
    741.4×
  65. 65SenecBratislava Region, Slovakia
    731.4×
  66. 65LitvínovÚstí nad Labem Region, Czechia
    731.4×
  67. 67GostivarGostivar, North Macedonia
    731.4×
  68. 67ŽilinaŽilina Region, Slovakia
    731.4×
  69. 67ŽideniceSouth Moravian, Czechia
    731.4×
  70. 70WillebroekFlanders, Belgium
    731.4×
  71. 70DieppeNormandy, France
    731.4×
  72. 70KrapkowiceOpole Voivodeship, Poland
    731.4×
  73. 73ZlínZlín, Czechia
    731.4×
  74. 73OpavaMoravian-Silesian Region, Czechia
    731.4×
  75. 73LiberecLiberec Region, Czechia
    731.4×
  76. 76HillegomSouth Holland, The Netherlands
    721.4×
  77. 77MartinŽilina Region, Slovakia
    721.4×
  78. 78JarosławSubcarpathia, Poland
    721.4×
  79. 79MielecSubcarpathia, Poland
    721.4×
  80. 80SkopjeGrad Skopje, North Macedonia
    711.3×
  81. 80OlomoucOlomouc Region, Czechia
    711.3×
  82. 80Mladá BoleslavCentral Bohemia, Czechia
    711.3×
  83. 83Hradec KrálovéHradec Králové Region, Czechia
    711.3×
  84. 83Banja LukaSrpska, Bosnia and Herzegovina
    711.3×
  85. 85TarnówLesser Poland, Poland
    711.3×
  86. 85RzeszówSubcarpathia, Poland
    711.3×
  87. 85PardubicePardubice Region, Czechia
    711.3×
  88. 85WrocławLower Silesia, Poland
    711.3×
  89. 85MariglianoCampania, Italy
    711.3×
  90. 90MaldegemFlanders, Belgium
    711.3×
  91. 90TepliceÚstí nad Labem Region, Czechia
    711.3×
  92. 92PrilepPrilep, North Macedonia
    711.3×
  93. 92KortrijkFlanders, Belgium
    711.3×
  94. 92EberswaldeBrandenburg, Germany
    711.3×
  95. 92PraguePrague, Czechia
    711.3×
  96. 96SiedlceMazovia, Poland
    701.3×
  97. 96RadomMazovia, Poland
    701.3×
  98. 96HraniceOlomouc Region, Czechia
    701.3×
  99. 99NysaOpole Voivodeship, Poland
    701.3×
  100. 99HobbsNew Mexico, United States
    701.3×
  101. 101GentFlanders, Belgium
    701.3×
  102. 102Cluj-NapocaCluj County, Romania
    701.3×
  103. 103AmiensHauts-de-France, France
    691.3×
  104. 103BrnoSouth Moravian, Czechia
    691.3×
  105. 105WawerMazovia, Poland
    691.3×
  106. 106WłocławekKujawsko-Pomorskie, Poland
    691.3×
  107. 107DunkirkHauts-de-France, France
    691.2×
  108. 107KadaňÚstí nad Labem Region, Czechia
    691.2×
  109. 109BerounCentral Bohemia, Czechia
    691.2×
  110. 110StrumicaStrumica, North Macedonia
    681.2×
  111. 110AnconaThe Marches, Italy
    681.2×
  112. 110San DiegoCalifornia, United States
    681.2×
  113. 113MechelenFlanders, Belgium
    681.2×
  114. 113San SeveroApulia, Italy
    681.2×
  115. 115ŁukówLublin, Poland
    681.2×
  116. 116TřinecMoravian-Silesian Region, Czechia
    681.2×
  117. 116MostÚstí nad Labem Region, Czechia
    681.2×
  118. 118ArrasHauts-de-France, France
    681.2×
  119. 118ZnojmoSouth Moravian, Czechia
    681.2×
  120. 120AnnemasseAuvergne-Rhône-Alpes, France
    671.2×
  121. 120Ústí nad LabemÚstí nad Labem Region, Czechia
    671.2×
  122. 122HodonínSouth Moravian, Czechia
    671.2×
  123. 123BrusselsBrussels Capital, Belgium
    671.2×
  124. 123NitraNitra Region, Slovakia
    671.2×
  125. 125MagdeburgSaxony-Anhalt, Germany
    671.2×
  126. 125BerlinState of Berlin, Germany
    671.2×
  127. 127PrzemyślSubcarpathia, Poland
    661.2×
  128. 127BadhoevedorpNorth Holland, The Netherlands
    661.2×
  129. 127VelserbroekNorth Holland, The Netherlands
    661.2×
  130. 130GrazStyria, Austria
    661.2×
  131. 130Bitterfeld-WolfenSaxony-Anhalt, Germany
    661.2×
  132. 130Sainte-Geneviève-des-BoisÎle-de-France, France
    661.2×
  133. 130RužomberokŽilina Region, Slovakia
    661.2×
  134. 130LučenecBanská Bystrica Region, Slovakia
    661.2×
  135. 130OntarioCalifornia, United States
    661.2×
  136. 136RēzekneRēzekne, Latvia
    661.1×
  137. 136LegionowoMazovia, Poland
    661.1×
  138. 136ČadcaŽilina Region, Slovakia
    661.1×
  139. 136Frýdek-MístekMoravian-Silesian Region, Czechia
    661.1×
  140. 140TournaiWallonia, Belgium
    661.1×
  141. 140GrimbergenFlanders, Belgium
    661.1×
  142. 140SzczecinWest Pomerania, Poland
    661.1×
  143. 143KošiceKošice Region, Slovakia
    661.1×
  144. 144Spišská Nová VesKošice Region, Slovakia
    651.1×
  145. 144MarratxíBalearic Islands, Spain
    651.1×
  146. 144KoksijdeFlanders, Belgium
    651.1×
  147. 144KutnoŁódź Voivodeship, Poland
    651.1×
  148. 148KętrzynWarmia-Masuria, Poland
    651.1×
  149. 148SallanchesAuvergne-Rhône-Alpes, France
    651.1×
  150. 148BratislavaBratislava Region, Slovakia
    651.1×
  151. 151PrešovPrešov Region, Slovakia
    651.1×
  152. 151ZamośćLublin, Poland
    651.1×
  153. 151OhridOhrid, North Macedonia
    651.1×
  154. 154PruszkówMazovia, Poland
    651.1×
  155. 154AmsterdamNorth Holland, The Netherlands
    651.1×
  156. 154Jurupa ValleyCalifornia, United States
    651.1×
  157. 154WittenbergSaxony-Anhalt, Germany
    651.1×
  158. 158PúchovTrenčín Region, Slovakia
    651.1×
  159. 159Popeşti-LeordeniIlfov, Romania
    641.1×
  160. 159BufteaIlfov, Romania
    641.1×
  161. 159TeltowBrandenburg, Germany
    641.1×
  162. 159EisenhüttenstadtBrandenburg, Germany
    641.1×
  163. 159Le HavreNormandy, France
    641.1×
  164. 159ZvolenBanská Bystrica Region, Slovakia
    641.1×
  165. 165ThessaloníkiCentral Macedonia, Greece
    641.1×
  166. 165Frankfurt (Oder)Brandenburg, Germany
    641.1×
  167. 165CreilHauts-de-France, France
    641.1×
  168. 168VoluntariIlfov, Romania
    641.1×
  169. 168Los AngelesCalifornia, United States
    641.1×
  170. 170BeauvaisHauts-de-France, France
    641.1×
  171. 171CodleaBrașov County, Romania
    641.1×
  172. 171GrajewoPodlasie, Poland
    641.1×
  173. 171BremenBremen, Germany
    641.1×
  174. 171Rose HillVirginia, United States
    641.1×
  175. 171OdessaTexas, United States
    641.1×
  176. 176ValenciaValencia, Spain
    631.1×
  177. 176SpringfieldVirginia, United States
    631.1×
  178. 178WarsawMazovia, Poland
    631.0×
  179. 178UtrechtUtrecht, The Netherlands
    631.0×
  180. 178BariApulia, Italy
    631.0×
  181. 181DębicaSubcarpathia, Poland
    631.0×
  182. 181BredaNorth Brabant, The Netherlands
    631.0×
  183. 181Saint-QuentinHauts-de-France, France
    631.0×
  184. 181KladnoCentral Bohemia, Czechia
    631.0×
  185. 185ZaventemFlanders, Belgium
    631.0×
  186. 185JihlavaVysocina, Czechia
    631.0×
  187. 185RiversideCalifornia, United States
    631.0×
  188. 188BucharestBucharest, Romania
    631.0×
  189. 188BitolaBitola, North Macedonia
    631.0×
  190. 188CottbusBrandenburg, Germany
    631.0×
  191. 188Blankenfelde-MahlowBrandenburg, Germany
    631.0×
  192. 192KavadarciKavadarci, North Macedonia
    621.0×
  193. 192RixensartWallonia, Belgium
    621.0×
  194. 194AthensAttica, Greece
    621.0×
  195. 194BiałystokPodlasie, Poland
    621.0×
  196. 194MalackyBratislava Region, Slovakia
    621.0×
  197. 197AcharnésAttica, Greece
    621.0×
  198. 197JasłoSubcarpathia, Poland
    621.0×
  199. 197TorreviejaValencia, Spain
    621.0×
  200. 197PesaroThe Marches, Italy
    621.0×

Top 200 of 1,196 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, April 22, 2023, smogrank.com/history/2023-04-22 (accessed 2 Oct 2026).

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