SmogRank / History / March 19, 2023

Most polluted cities on March 19, 2023

1,306 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 128.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during March 19, 2023. All episodes.

← N'Djamena 128.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for March 19, 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. 1N'DjamenaN’Djaména, Chad
    2038.5×
  2. 2DelhiDelhi, India
    1695.4×
  3. 3BamakoBamako, Mali
    1665.2×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    1634.9×
  5. 5KościanGreater Poland, Poland
    1624.8×
  6. 6AlessandriaPiedmont, Italy
    1453.6×
  7. 7ToruńKujawsko-Pomorskie, Poland
    1343.3×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1313.2×
  9. 9EtwatwaGauteng, South Africa
    1273.1×
  10. 10ZnojmoSouth Moravian, Czechia
    1273.1×
  11. 11ŚwiecieKujawsko-Pomorskie, Poland
    1263.1×
  12. 12KrakówLesser Poland, Poland
    1222.9×
  13. 13MostÚstí nad Labem Region, Czechia
    1212.9×
  14. 14Jelenia GóraLower Silesia, Poland
    1212.9×
  15. 15ŁaskŁódź Voivodeship, Poland
    1192.8×
  16. 16WłocławekKujawsko-Pomorskie, Poland
    1182.8×
  17. 17PułtuskMazovia, Poland
    1182.8×
  18. 17GdyniaPomerania, Poland
    1182.8×
  19. 19LublinLublin, Poland
    1172.8×
  20. 20Ga-RankuwaNorth West, South Africa
    1162.8×
  21. 21KościerzynaPomerania, Poland
    1152.7×
  22. 22DěčínÚstí nad Labem Region, Czechia
    1152.7×
  23. 23KhartoumKhartoum, Sudan
    1142.7×
  24. 24BaghdadBaghdad, Iraq
    1142.7×
  25. 25ZgierzŁódź Voivodeship, Poland
    1132.7×
  26. 26SalorTashkent Region, Uzbekistan
    1112.6×
  27. 26PoznańGreater Poland, Poland
    1112.6×
  28. 28GdańskPomerania, Poland
    1112.6×
  29. 29BerounCentral Bohemia, Czechia
    1102.6×
  30. 29LęborkPomerania, Poland
    1102.6×
  31. 31BohumínMoravian-Silesian Region, Czechia
    1092.6×
  32. 32KladnoCentral Bohemia, Czechia
    1082.6×
  33. 33Abujalow-cost sensorsFCT, Nigeria
    1082.6×
  34. 34LitvínovÚstí nad Labem Region, Czechia
    1082.5×
  35. 35KutnoŁódź Voivodeship, Poland
    1062.5×
  36. 36Gorzów WielkopolskiLubusz, Poland
    1052.5×
  37. 37Karachilow-cost sensorsSindh, Pakistan
    1052.5×
  38. 38VereenigingGauteng, South Africa
    1042.4×
  39. 38PraguePrague, Czechia
    1042.4×
  40. 40ŁukówLublin, Poland
    1022.4×
  41. 41TlaquepaqueJalisco, Mexico
    1022.4×
  42. 42ŻyrardówMazovia, Poland
    1012.4×
  43. 43Ústí nad LabemÚstí nad Labem Region, Czechia
    982.3×
  44. 44NišCentral Serbia, Serbia
    982.3×
  45. 45BydgoszczKujawsko-Pomorskie, Poland
    982.3×
  46. 46Kathmandulow-cost sensorsBagmati Province, Nepal
    972.2×
  47. 46MiędzyrzeczLubusz, Poland
    972.2×
  48. 48EłkWarmia-Masuria, Poland
    962.2×
  49. 49OtwockMazovia, Poland
    942.1×
  50. 50RacibórzSilesia, Poland
    942.1×
  51. 51MitrovicëMitrovica, Kosovo
    932.1×
  52. 52Czechowice-DziedziceSilesia, Poland
    932.1×
  53. 53PilsenPlzeň Region, Czechia
    932.1×
  54. 54Islamabadlow-cost sensorsIslamabad, Pakistan
    922.1×
  55. 54KadaňÚstí nad Labem Region, Czechia
    922.1×
  56. 56SuwałkiPodlasie, Poland
    902.0×
  57. 57KętrzynWarmia-Masuria, Poland
    902.0×
  58. 58TrentoTrentino-Alto Adige, Italy
    892.0×
  59. 59StarachowiceŚwiętokrzyskie, Poland
    892.0×
  60. 59PristinaPristina, Kosovo
    892.0×
  61. 61NiskoSubcarpathia, Poland
    881.9×
  62. 62KłodzkoLower Silesia, Poland
    881.9×
  63. 63SasolburgFree State, South Africa
    881.9×
  64. 64RadomMazovia, Poland
    881.9×
  65. 64Bielsko-BialaSilesia, Poland
    881.9×
  66. 66Hradec KrálovéHradec Králové Region, Czechia
    871.9×
  67. 67GrajewoPodlasie, Poland
    871.9×
  68. 67MiddelburgMpumalanga, South Africa
    871.9×
  69. 69HavířovMoravian-Silesian Region, Czechia
    861.8×
  70. 69WrocławLower Silesia, Poland
    861.8×
  71. 71BellinzonaTicino, Switzerland
    851.8×
  72. 72CelayaGuanajuato, Mexico
    851.8×
  73. 73Mladá BoleslavCentral Bohemia, Czechia
    851.8×
  74. 74KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    841.8×
  75. 74Vranov nad TopľouPrešov Region, Slovakia
    841.8×
  76. 74MumbaiMaharashtra, India
    841.8×
  77. 77WarsawMazovia, Poland
    841.8×
  78. 78BiałystokPodlasie, Poland
    841.8×
  79. 78BeneventoCampania, Italy
    841.8×
  80. 80GlogovacPristina, Kosovo
    831.8×
  81. 80KrapkowiceOpole Voivodeship, Poland
    831.8×
  82. 82AlexandriaAlexandria, Egypt
    831.8×
  83. 83TijuanaBaja California, Mexico
    831.7×
  84. 83MexicaliBaja California, Mexico
    831.7×
  85. 85ThembisaGauteng, South Africa
    821.7×
  86. 86KošiceKošice Region, Slovakia
    821.7×
  87. 86PłockMazovia, Poland
    821.7×
  88. 88Naucalpan de JuárezMéxico, Mexico
    821.7×
  89. 89ŁódźŁódź Voivodeship, Poland
    811.7×
  90. 89Puerto VarasLos Lagos Region, Chile
    811.7×
  91. 91SiedlceMazovia, Poland
    811.7×
  92. 92AugustówPodlasie, Poland
    811.7×
  93. 92RoveretoTrentino-Alto Adige, Italy
    811.7×
  94. 94HumennéPrešov Region, Slovakia
    811.7×
  95. 95OlomoucOlomouc Region, Czechia
    801.7×
  96. 96GrazStyria, Austria
    801.6×
  97. 97OlsztynWarmia-Masuria, Poland
    801.6×
  98. 98Spišská Nová VesKošice Region, Slovakia
    801.6×
  99. 98TraunUpper Austria, Austria
    801.6×
  100. 98UstkaPomerania, Poland
    801.6×
  101. 98CoyhaiqueAysén, Chile
    801.6×
  102. 102České BudějoviceSouth Bohemian Region, Czechia
    791.6×
  103. 103SantiagoSantiago Metropolitan, Chile
    791.6×
  104. 104Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    791.6×
  105. 104Puente AltoSantiago Metropolitan, Chile
    791.6×
  106. 106Ciudad NezahualcoyotlMéxico, Mexico
    791.6×
  107. 106QuinteroValparaiso, Chile
    791.6×
  108. 108Jastrzębie ZdrójSilesia, Poland
    791.6×
  109. 108TalaganteSantiago Metropolitan, Chile
    791.6×
  110. 110BucharestBucharest, Romania
    781.6×
  111. 111SoshanguveGauteng, South Africa
    781.6×
  112. 111LiberecLiberec Region, Czechia
    781.6×
  113. 113San Mateo AtencoMéxico, Mexico
    781.6×
  114. 113Mexico CityMexico City, Mexico
    781.6×
  115. 115WawerMazovia, Poland
    771.5×
  116. 115San Francisco TlalcilalcalpanMéxico, Mexico
    771.5×
  117. 117BrakpanGauteng, South Africa
    771.5×
  118. 118KlaipėdaKlaipėda County, Lithuania
    771.5×
  119. 118SzczecinWest Pomerania, Poland
    771.5×
  120. 120ChisinauChișinău Municipality, Moldova
    761.5×
  121. 121ZamośćLublin, Poland
    761.5×
  122. 121OpoleOpole Voivodeship, Poland
    761.5×
  123. 121KatowiceSilesia, Poland
    761.5×
  124. 121Tepeji del Río de OcampoHidalgo, Mexico
    761.5×
  125. 125RuseRuse, Bulgaria
    751.5×
  126. 126BelgradeCentral Serbia, Serbia
    751.5×
  127. 126JohannesburgGauteng, South Africa
    751.5×
  128. 128OsornoLos Lagos Region, Chile
    751.5×
  129. 128San Salvador TizatlalliMéxico, Mexico
    751.5×
  130. 130LuganoTicino, Switzerland
    751.5×
  131. 131ŽilinaŽilina Region, Slovakia
    741.4×
  132. 132PrešovPrešov Region, Slovakia
    741.4×
  133. 132KlosterneuburgLower Austria, Austria
    741.4×
  134. 132FlensburgSchleswig-Holstein, Germany
    741.4×
  135. 135PejëPec, Kosovo
    741.4×
  136. 135AmstettenLower Austria, Austria
    741.4×
  137. 137Frankfurt (Oder)Brandenburg, Germany
    741.4×
  138. 138VentspilsVentspils, Latvia
    741.4×
  139. 139RigaRiga, Latvia
    741.4×
  140. 139Sankt PöltenLower Austria, Austria
    741.4×
  141. 139La UniónLos Ríos Region, Chile
    741.4×
  142. 142CraiovaDolj, Romania
    731.4×
  143. 143PueblaPuebla, Mexico
    731.4×
  144. 143Viña del MarValparaiso, Chile
    731.4×
  145. 143NacimientoBiobio, Chile
    731.4×
  146. 146KaunasKaunas, Lithuania
    731.4×
  147. 147ConcónValparaiso, Chile
    731.4×
  148. 148Cluj-NapocaCluj County, Romania
    721.4×
  149. 148PrzemyślSubcarpathia, Poland
    721.4×
  150. 148LinzUpper Austria, Austria
    721.4×
  151. 148BolzanoTrentino-Alto Adige, Italy
    721.4×
  152. 148XonacatlánMéxico, Mexico
    721.4×
  153. 148AricaArica y Parinacota Region, Chile
    721.4×
  154. 154BerlinState of Berlin, Germany
    721.4×
  155. 155QuillotaValparaiso, Chile
    721.4×
  156. 156Richards BayKwaZulu-Natal, South Africa
    721.3×
  157. 156NeuruppinBrandenburg, Germany
    721.3×
  158. 156TolucaMéxico, Mexico
    721.3×
  159. 156ValdiviaLos Ríos Region, Chile
    721.3×
  160. 160IaşiIași County, Romania
    711.3×
  161. 161RostockMecklenburg-Vorpommern, Germany
    711.3×
  162. 161RužomberokŽilina Region, Slovakia
    711.3×
  163. 161MartinŽilina Region, Slovakia
    711.3×
  164. 161RancaguaO'Higgins Region, Chile
    711.3×
  165. 161HualpénBiobio, Chile
    711.3×
  166. 166OstravaMoravian-Silesian Region, Czechia
    711.3×
  167. 167RengoO'Higgins Region, Chile
    711.3×
  168. 168ModugnoApulia, Italy
    711.3×
  169. 169PerchtoldsdorfLower Austria, Austria
    701.3×
  170. 169EisenhüttenstadtBrandenburg, Germany
    701.3×
  171. 169ParklandWashington, United States
    701.3×
  172. 172TeltowBrandenburg, Germany
    701.3×
  173. 172KielSchleswig-Holstein, Germany
    701.3×
  174. 172Prince GeorgeBritish Columbia, Canada
    701.3×
  175. 175ŚwinoujścieWest Pomerania, Poland
    701.3×
  176. 176WelsUpper Austria, Austria
    701.3×
  177. 176StralsundMecklenburg-Vorpommern, Germany
    701.3×
  178. 178VanderbijlparkGauteng, South Africa
    691.3×
  179. 178EberswaldeBrandenburg, Germany
    691.3×
  180. 178Frýdek-MístekMoravian-Silesian Region, Czechia
    691.3×
  181. 181JarosławSubcarpathia, Poland
    691.3×
  182. 181MödlingLower Austria, Austria
    691.3×
  183. 183BratislavaBratislava Region, Slovakia
    691.3×
  184. 184TocopillaAntofagasta, Chile
    691.2×
  185. 185KöthenSaxony-Anhalt, Germany
    691.2×
  186. 185LethbridgeAlberta, Canada
    691.2×
  187. 187Botevgradlow-cost sensorsSofia, Bulgaria
    681.2×
  188. 187BrightonEngland, United Kingdom
    681.2×
  189. 187WolfsbergCarinthia, Austria
    681.2×
  190. 187MagdeburgSaxony-Anhalt, Germany
    681.2×
  191. 187Banská BystricaBanská Bystrica Region, Slovakia
    681.2×
  192. 187Kędzierzyn-KoźleOpole Voivodeship, Poland
    681.2×
  193. 187San Luis PotosíSan Luis Potosí, Mexico
    681.2×
  194. 194PotsdamBrandenburg, Germany
    681.2×
  195. 194CalexicoCalifornia, United States
    681.2×
  196. 196TarnówLesser Poland, Poland
    681.2×
  197. 196SteyrUpper Austria, Austria
    681.2×
  198. 196Český TěšínMoravian-Silesian Region, Czechia
    681.2×
  199. 196San Pedro de la PazBiobio, Chile
    681.2×
  200. 200Konstancin-JeziornaMazovia, Poland
    681.2×

Top 200 of 1,306 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 19, 2023, smogrank.com/history/2023-03-19 (accessed 2 Oct 2026).

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