SmogRank / History / April 2023

Most polluted cities, April 2023

1,251 cities ranked by their average PM2.5 over the 30 days; the worst was Dhaka, Bangladesh, at 107.9 µg/m³. A city needs measurements on 70% of the days to be ranked.

  1. 1Dhakalow-cost sensorsDhaka Division, Bangladesh
    107.9
  2. 2Kathmandulow-cost sensorsBagmati Province, Nepal
    82.6
  3. 3BamakoBamako, Mali
    71.8
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    67.4
  5. 5ReykjavíkCapital Region, Iceland
    65.8
  6. 6DelhiDelhi, India
    63.6
  7. 7Lahorelow-cost sensorsPunjab, Pakistan
    63.2
  8. 8MexicaliBaja California, Mexico
    59.7
  9. 9BeijingBeijing, China
    59.2
  10. 10TlaquepaqueJalisco, Mexico
    58.4
  11. 11DushanbeDushanbe, Tajikistan
    50.3
  12. 12ShenyangLiaoning, China
    50.1
  13. 13HyderabadTelangana, India
    49.1
  14. 14HanoiHanoi, Vietnam
    47.6
  15. 15San Mateo AtencoMéxico, Mexico
    46.9
  16. 16YangonYangon, Myanmar
    43.1
  17. 17KhartoumKhartoum, Sudan
    42.4
  18. 18ZapopanJalisco, Mexico
    39.2
  19. 19BaghdadBaghdad, Iraq
    37.8
  20. 20CelayaGuanajuato, Mexico
    37.0
  21. 21GuangzhouGuangdong, China
    33.5
  22. 22RabinalBaja Verapaz, Guatemala
    32.4
  23. 23Guatemala CityGuatemala, Guatemala
    32.3
  24. 24Ciudad Benito JuárezNuevo León, Mexico
    32.2
  25. 25Kampalalow-cost sensorsCentral Region, Uganda
    32.1
  26. 26PristinaPristina, Kosovo
    31.3
  27. 26TolucaMéxico, Mexico
    31.3
  28. 28XonacatlánMéxico, Mexico
    31.2
  29. 29Islamabadlow-cost sensorsIslamabad, Pakistan
    30.8
  30. 30GuadalajaraJalisco, Mexico
    29.9
  31. 31Şabāḩ as SālimMubārak al Kabīr, Kuwait
    29.3
  32. 32San Francisco TlalcilalcalpanMéxico, Mexico
    29.2
  33. 33MumbaiMaharashtra, India
    28.9
  34. 34Tepeji del Río de OcampoHidalgo, Mexico
    28.5
  35. 35BelmopanCayo District, Belize
    27.4
  36. 36AshgabatAshgabat, Turkmenistan
    27.2
  37. 37Ciudad NezahualcoyotlMéxico, Mexico
    25.9
  38. 38ConakryConakry, Guinea
    24.7
  39. 39SalorTashkent Region, Uzbekistan
    24.5
  40. 40PueblaPuebla, Mexico
    24.1
  41. 41BakuBaki, Azerbaijan
    23.0
  42. 41NišCentral Serbia, Serbia
    23.0
  43. 41ColomboWestern Province, Sri Lanka
    23.0
  44. 44Karachilow-cost sensorsSindh, Pakistan
    22.7
  45. 44Naucalpan de JuárezMéxico, Mexico
    22.7
  46. 44CuernavacaMorelos, Mexico
    22.7
  47. 47Mexico CityMexico City, Mexico
    22.5
  48. 47SalamancaGuanajuato, Mexico
    22.5
  49. 49Ciudad JuárezChihuahua, Mexico
    22.0
  50. 50Addis AbabaAddis Ababa, Ethiopia
    21.9
  51. 50Abujalow-cost sensorsFCT, Nigeria
    21.9
  52. 52San Andrés TuxtlaVeracruz, Mexico
    21.3
  53. 53JeddahMecca Region, Saudi Arabia
    20.9
  54. 54AguascalientesAguascalientes, Mexico
    20.8
  55. 55Santiago de QuerétaroQuerétaro, Mexico
    20.5
  56. 56GarcíaNuevo León, Mexico
    20.3
  57. 56MonterreyNuevo León, Mexico
    20.3
  58. 58TijuanaBaja California, Mexico
    20.0
  59. 59HavířovMoravian-Silesian Region, Czechia
    19.9
  60. 60Ciudad ApodacaNuevo León, Mexico
    19.7
  61. 61BohumínMoravian-Silesian Region, Czechia
    19.6
  62. 62ŁaskŁódź Voivodeship, Poland
    19.2
  63. 62Santa CatarinaNuevo León, Mexico
    19.2
  64. 64Pachuca de SotoHidalgo, Mexico
    19.1
  65. 64León de los AldamaGuanajuato, Mexico
    19.1
  66. 66VeracruzVeracruz, Mexico
    19.0
  67. 67AntananarivoAnalamanga, Madagascar
    18.9
  68. 68IrapuatoGuanajuato, Mexico
    18.7
  69. 69BelgradeCentral Serbia, Serbia
    18.5
  70. 69Český TěšínMoravian-Silesian Region, Czechia
    18.5
  71. 71Frýdek-MístekMoravian-Silesian Region, Czechia
    18.3
  72. 72Almatylow-cost sensorsAlmaty, Kazakhstan
    17.9
  73. 73OstravaMoravian-Silesian Region, Czechia
    17.5
  74. 74GuanajuatoGuanajuato, Mexico
    17.2
  75. 75Victoria de DurangoDurango, Mexico
    16.8
  76. 76Valašské MeziříčíZlín, Czechia
    16.6
  77. 76San Miguel de AllendeGuanajuato, Mexico
    16.6
  78. 78San IsidroCanary Islands, Spain
    16.3
  79. 79AcharnésAttica, Greece
    16.1
  80. 79RadomMazovia, Poland
    16.1
  81. 79San Luis de la PazGuanajuato, Mexico
    16.1
  82. 82DěčínÚstí nad Labem Region, Czechia
    16.0
  83. 83Lagoslow-cost sensorsLagos, Nigeria
    15.9
  84. 84ŻyrardówMazovia, Poland
    15.7
  85. 85Los AngelesCalifornia, United States
    15.5
  86. 86KrefeldNorth Rhine-Westphalia, Germany
    15.4
  87. 86Ciudad General EscobedoNuevo León, Mexico
    15.4
  88. 86AbasoloGuanajuato, Mexico
    15.4
  89. 89WłocławekKujawsko-Pomorskie, Poland
    15.3
  90. 89ChihuahuaChihuahua, Mexico
    15.3
  91. 91KutnoŁódź Voivodeship, Poland
    15.2
  92. 91Cadereyta JiménezNuevo León, Mexico
    15.2
  93. 93IzegemFlanders, Belgium
    15.1
  94. 94Las Palmas de Gran CanariaCanary Islands, Spain
    14.9
  95. 94CalexicoCalifornia, United States
    14.9
  96. 96AthensAttica, Greece
    14.7
  97. 96RoeselareFlanders, Belgium
    14.7
  98. 96EvergemFlanders, Belgium
    14.7
  99. 99RoubaixHauts-de-France, France
    14.6
  100. 100MenenFlanders, Belgium
    14.5
  101. 100KortrijkFlanders, Belgium
    14.5
  102. 102PrešovPrešov Region, Slovakia
    14.4
  103. 103StarachowiceŚwiętokrzyskie, Poland
    14.3
  104. 103PruszkówMazovia, Poland
    14.3
  105. 103Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    14.3
  106. 103IndianapolisIndiana, United States
    14.3
  107. 107SiedlceMazovia, Poland
    14.2
  108. 108ZnojmoSouth Moravian, Czechia
    14.0
  109. 108OlomoucOlomouc Region, Czechia
    14.0
  110. 108AlessandriaPiedmont, Italy
    14.0
  111. 111ŁukówLublin, Poland
    13.9
  112. 111ArrecifeCanary Islands, Spain
    13.9
  113. 113MostÚstí nad Labem Region, Czechia
    13.8
  114. 113RedfordMichigan, United States
    13.8
  115. 115ŁódźŁódź Voivodeship, Poland
    13.6
  116. 115CayenneGuyane, French Guiana
    13.6
  117. 117RuseRuse, Bulgaria
    13.5
  118. 118OtwockMazovia, Poland
    13.4
  119. 118CardiffWales, United Kingdom
    13.4
  120. 118SenicaTrnava Region, Slovakia
    13.4
  121. 121Santa Cruz de TenerifeCanary Islands, Spain
    13.3
  122. 121ValenciennesHauts-de-France, France
    13.3
  123. 121DieppeNormandy, France
    13.3
  124. 121TrnavaTrnava Region, Slovakia
    13.3
  125. 125VisbyGotland, Sweden
    13.2
  126. 125TeltowBrandenburg, Germany
    13.2
  127. 125ZlínZlín, Czechia
    13.2
  128. 125Hradec KrálovéHradec Králové Region, Czechia
    13.2
  129. 125Jurupa ValleyCalifornia, United States
    13.2
  130. 130KošiceKošice Region, Slovakia
    13.0
  131. 130WarsawMazovia, Poland
    13.0
  132. 130NaplesCampania, Italy
    13.0
  133. 130ComptonCalifornia, United States
    13.0
  134. 134BucharestBucharest, Romania
    12.9
  135. 134ThessaloníkiCentral Macedonia, Greece
    12.9
  136. 134Puerto del RosarioCanary Islands, Spain
    12.9
  137. 134GyőrGyőr-Moson-Sopron, Hungary
    12.9
  138. 134ŽilinaŽilina Region, Slovakia
    12.9
  139. 139IaşiIași County, Romania
    12.8
  140. 139LiberpolisCounty of Osijek-Baranja, Croatia
    12.8
  141. 141GrajewoPodlasie, Poland
    12.7
  142. 141IngenioCanary Islands, Spain
    12.7
  143. 141MaldegemFlanders, Belgium
    12.7
  144. 141DuisburgNorth Rhine-Westphalia, Germany
    12.7
  145. 141LilleHauts-de-France, France
    12.7
  146. 146Spišská Nová VesKošice Region, Slovakia
    12.6
  147. 146BurbankCalifornia, United States
    12.6
  148. 148AsprópyrgosAttica, Greece
    12.5
  149. 148HumennéPrešov Region, Slovakia
    12.5
  150. 148Botevgradlow-cost sensorsSofia, Bulgaria
    12.5
  151. 148MonsWallonia, Belgium
    12.5
  152. 148BeverenFlanders, Belgium
    12.5
  153. 148PécsBaranya, Hungary
    12.5
  154. 148San DiegoCalifornia, United States
    12.5
  155. 155Frankfurt (Oder)Brandenburg, Germany
    12.4
  156. 155Sainte-Geneviève-des-BoisÎle-de-France, France
    12.4
  157. 155MartinŽilina Region, Slovakia
    12.4
  158. 155LiberecLiberec Region, Czechia
    12.4
  159. 159BremenBremen, Germany
    12.3
  160. 159BerlinState of Berlin, Germany
    12.3
  161. 161EberswaldeBrandenburg, Germany
    12.2
  162. 161PraguePrague, Czechia
    12.2
  163. 163PułtuskMazovia, Poland
    12.1
  164. 163La Línea de la ConcepciónAndalusia, Spain
    12.1
  165. 163AntwerpFlanders, Belgium
    12.1
  166. 163OldenburgLower Saxony, Germany
    12.1
  167. 167BiałystokPodlasie, Poland
    12.0
  168. 167VigoGalicia, Spain
    12.0
  169. 169GentFlanders, Belgium
    11.9
  170. 169Blankenfelde-MahlowBrandenburg, Germany
    11.9
  171. 171SzegedCsongrád, Hungary
    11.8
  172. 171ŽideniceSouth Moravian, Czechia
    11.8
  173. 173ZwijndrechtFlanders, Belgium
    11.7
  174. 173LochristiFlanders, Belgium
    11.7
  175. 173KoksijdeFlanders, Belgium
    11.7
  176. 173MünsterNorth Rhine-Westphalia, Germany
    11.7
  177. 173HamburgHamburg, Germany
    11.7
  178. 173EdinburgTexas, United States
    11.7
  179. 179DunaújvárosFejér, Hungary
    11.6
  180. 179PilsenPlzeň Region, Czechia
    11.6
  181. 179BrawleyCalifornia, United States
    11.6
  182. 182KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    11.5
  183. 182BrightonEngland, United Kingdom
    11.5
  184. 182KapellenFlanders, Belgium
    11.5
  185. 182DattelnNorth Rhine-Westphalia, Germany
    11.5
  186. 182BeneventoCampania, Italy
    11.5
  187. 182BirminghamAlabama, United States
    11.5
  188. 182HueytownAlabama, United States
    11.5
  189. 189NottinghamEngland, United Kingdom
    11.4
  190. 189PotsdamBrandenburg, Germany
    11.4
  191. 189KielSchleswig-Holstein, Germany
    11.4
  192. 189CottbusBrandenburg, Germany
    11.4
  193. 189BremerhavenBremen, Germany
    11.4
  194. 194Kuala Lumpurlow-cost sensorsKuala Lumpur, Malaysia
    11.3
  195. 194HuelvaAndalusia, Spain
    11.3
  196. 194JülichNorth Rhine-Westphalia, Germany
    11.3
  197. 194DortmundNorth Rhine-Westphalia, Germany
    11.3
  198. 194KadaňÚstí nad Labem Region, Czechia
    11.3
  199. 194DetroitMichigan, United States
    11.3
  200. 200WawerMazovia, Poland
    11.2

Top 200 of 1,251 shown.

Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

By country

Austria 14Belgium 24Bulgaria 6Canada 76China 3Czechia 23Finland 8France 100Germany 151Greece 7Hungary 8India 3Ireland 3Italy 11Mexico 38Pakistan 4Poland 19Portugal 5Reunion 3Romania 4Slovakia 20Spain 72Sweden 5Switzerland 5The Netherlands 21United Kingdom 41United States 529

Ranked cities in each country, April 2023.

Use this board

SmogRank, most polluted cities, PM2.5, April 2023, smogrank.com/history/2023-04 (accessed 2 Oct 2026).

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