SmogRank / History / week of April 17, 2023

Most polluted cities, week of April 17, 2023

1,298 cities ranked by their average PM2.5 over the 7 days; the worst was Piedras Negras, Mexico, at 352.5 µg/m³. A city needs measurements on 70% of the days to be ranked.

  1. 1Piedras NegrasCoahuila, Mexico
    352.5
  2. 2MexicaliBaja California, Mexico
    161.0
  3. 3Kathmandulow-cost sensorsBagmati Province, Nepal
    88.4
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    83.9
  5. 5BeijingBeijing, China
    74.3
  6. 6HyderabadTelangana, India
    66.3
  7. 7BamakoBamako, Mali
    60.9
  8. 8San Mateo AtencoMéxico, Mexico
    59.7
  9. 9TlaquepaqueJalisco, Mexico
    59.0
  10. 10HanoiHanoi, Vietnam
    57.3
  11. 11DelhiDelhi, India
    53.7
  12. 12YangonYangon, Myanmar
    50.2
  13. 13CholulaPuebla, Mexico
    44.8
  14. 14BaghdadBaghdad, Iraq
    40.4
  15. 15CelayaGuanajuato, Mexico
    37.8
  16. 16Şabāḩ as SālimMubārak al Kabīr, Kuwait
    36.3
  17. 16Novi PazarCentral Serbia, Serbia
    36.3
  18. 18Ciudad Benito JuárezNuevo León, Mexico
    34.4
  19. 19GuangzhouGuangdong, China
    34.1
  20. 20ShenyangLiaoning, China
    33.9
  21. 21RabinalBaja Verapaz, Guatemala
    33.5
  22. 22Guatemala CityGuatemala, Guatemala
    33.2
  23. 23Jastrzębie ZdrójSilesia, Poland
    31.8
  24. 24TolucaMéxico, Mexico
    31.2
  25. 25Kampalalow-cost sensorsCentral Region, Uganda
    31.1
  26. 26Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    30.9
  27. 27XonacatlánMéxico, Mexico
    30.1
  28. 28AshgabatAshgabat, Turkmenistan
    29.9
  29. 29ValjevoCentral Serbia, Serbia
    29.8
  30. 30PristinaPristina, Kosovo
    29.4
  31. 31San Francisco TlalcilalcalpanMéxico, Mexico
    29.1
  32. 32GuadalajaraJalisco, Mexico
    28.9
  33. 33PirotCentral Serbia, Serbia
    28.8
  34. 34PueblaPuebla, Mexico
    28.1
  35. 35RacibórzSilesia, Poland
    27.8
  36. 36Silao de la VictoriaGuanajuato, Mexico
    27.4
  37. 37San Andrés TuxtlaVeracruz, Mexico
    27.1
  38. 38Tepeji del Río de OcampoHidalgo, Mexico
    26.5
  39. 39MumbaiMaharashtra, India
    26.3
  40. 40Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    26.0
  41. 41KhartoumKhartoum, Sudan
    24.7
  42. 42BakuBaki, Azerbaijan
    24.6
  43. 43LazarevacCentral Serbia, Serbia
    24.2
  44. 43Czechowice-DziedziceSilesia, Poland
    24.2
  45. 45MonterreyNuevo León, Mexico
    24.1
  46. 46Islamabadlow-cost sensorsIslamabad, Pakistan
    24.0
  47. 46Ciudad NezahualcoyotlMéxico, Mexico
    24.0
  48. 48ConakryConakry, Guinea
    23.9
  49. 49CuernavacaMorelos, Mexico
    23.5
  50. 50TijuanaBaja California, Mexico
    22.3
  51. 50Santa CatarinaNuevo León, Mexico
    22.3
  52. 52Karachilow-cost sensorsSindh, Pakistan
    22.2
  53. 52ColomboWestern Province, Sri Lanka
    22.2
  54. 54SalamancaGuanajuato, Mexico
    22.1
  55. 55VeracruzVeracruz, Mexico
    21.9
  56. 56HavířovMoravian-Silesian Region, Czechia
    21.8
  57. 56ŁaskŁódź Voivodeship, Poland
    21.8
  58. 56Bielsko-BialaSilesia, Poland
    21.8
  59. 59ZemunCentral Serbia, Serbia
    21.7
  60. 60Naucalpan de JuárezMéxico, Mexico
    21.4
  61. 61Jelenia GóraLower Silesia, Poland
    21.1
  62. 62Addis AbabaAddis Ababa, Ethiopia
    20.9
  63. 62KłodzkoLower Silesia, Poland
    20.9
  64. 62TlaxcalaTlaxcala, Mexico
    20.9
  65. 65JeddahMecca Region, Saudi Arabia
    20.8
  66. 65KragujevacCentral Serbia, Serbia
    20.8
  67. 65SalorTashkent Region, Uzbekistan
    20.8
  68. 68Ciudad JuárezChihuahua, Mexico
    20.7
  69. 69ObrenovacCentral Serbia, Serbia
    20.4
  70. 70KrefeldNorth Rhine-Westphalia, Germany
    20.3
  71. 71OstravaMoravian-Silesian Region, Czechia
    20.2
  72. 72EvergemFlanders, Belgium
    20.1
  73. 72BohumínMoravian-Silesian Region, Czechia
    20.1
  74. 72KościanGreater Poland, Poland
    20.1
  75. 72Mexico CityMexico City, Mexico
    20.1
  76. 76KrakówLesser Poland, Poland
    19.9
  77. 77KortrijkFlanders, Belgium
    19.8
  78. 77Novi SadVojvodina, Serbia
    19.8
  79. 79AntananarivoAnalamanga, Madagascar
    19.6
  80. 80MenenFlanders, Belgium
    19.5
  81. 80CoatzacoalcosVeracruz, Mexico
    19.5
  82. 82RoeselareFlanders, Belgium
    19.4
  83. 83IzegemFlanders, Belgium
    19.3
  84. 83Frýdek-MístekMoravian-Silesian Region, Czechia
    19.3
  85. 83Český TěšínMoravian-Silesian Region, Czechia
    19.3
  86. 83León de los AldamaGuanajuato, Mexico
    19.3
  87. 87ČačakCentral Serbia, Serbia
    19.2
  88. 88San Juan del RíoQuerétaro, Mexico
    19.1
  89. 89OpoleOpole Voivodeship, Poland
    18.9
  90. 89KatowiceSilesia, Poland
    18.9
  91. 89BelmopanCayo District, Belize
    18.9
  92. 89Santiago de QuerétaroQuerétaro, Mexico
    18.9
  93. 93PančevoVojvodina, Serbia
    18.7
  94. 94TarnówLesser Poland, Poland
    18.6
  95. 94DieppeNormandy, France
    18.6
  96. 94CalexicoCalifornia, United States
    18.6
  97. 97RoubaixHauts-de-France, France
    18.5
  98. 97WrocławLower Silesia, Poland
    18.5
  99. 99HueytownAlabama, United States
    18.4
  100. 100VisbyGotland, Sweden
    18.2
  101. 101TrnavaTrnava Region, Slovakia
    18.1
  102. 102LublinLublin, Poland
    17.9
  103. 102Kuala Lumpurlow-cost sensorsKuala Lumpur, Malaysia
    17.9
  104. 102GuanajuatoGuanajuato, Mexico
    17.9
  105. 105ŻyrardówMazovia, Poland
    17.7
  106. 106SaltilloCoahuila, Mexico
    17.6
  107. 107Valašské MeziříčíZlín, Czechia
    17.5
  108. 108Victoria de DurangoDurango, Mexico
    17.4
  109. 109ChihuahuaChihuahua, Mexico
    17.2
  110. 110SremčicaCentral Serbia, Serbia
    17.1
  111. 110ValenciennesHauts-de-France, France
    17.1
  112. 112BelgradeCentral Serbia, Serbia
    17.0
  113. 112MaldegemFlanders, Belgium
    17.0
  114. 112IrapuatoGuanajuato, Mexico
    17.0
  115. 115LilleHauts-de-France, France
    16.9
  116. 116ToruńKujawsko-Pomorskie, Poland
    16.8
  117. 117SmederevoCentral Serbia, Serbia
    16.7
  118. 118RadomMazovia, Poland
    16.6
  119. 118SenicaTrnava Region, Slovakia
    16.6
  120. 120TournaiWallonia, Belgium
    16.4
  121. 121RzeszówSubcarpathia, Poland
    16.3
  122. 121MonsWallonia, Belgium
    16.3
  123. 121BeverenFlanders, Belgium
    16.3
  124. 121Le MansPays de la Loire, France
    16.3
  125. 121Ciudad General EscobedoNuevo León, Mexico
    16.3
  126. 126NišCentral Serbia, Serbia
    16.2
  127. 126Abujalow-cost sensorsFCT, Nigeria
    16.2
  128. 126San Miguel de AllendeGuanajuato, Mexico
    16.2
  129. 129Spišská Nová VesKošice Region, Slovakia
    16.1
  130. 129Pachuca de SotoHidalgo, Mexico
    16.1
  131. 131ComptonCalifornia, United States
    15.9
  132. 132Sainte-Geneviève-des-BoisÎle-de-France, France
    15.8
  133. 132ŁódźŁódź Voivodeship, Poland
    15.8
  134. 134DreuxCentre-Val de Loire, France
    15.7
  135. 134KutnoŁódź Voivodeship, Poland
    15.7
  136. 136Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    15.6
  137. 136KoksijdeFlanders, Belgium
    15.6
  138. 136GentFlanders, Belgium
    15.6
  139. 136TeltowBrandenburg, Germany
    15.6
  140. 136BeauvaisHauts-de-France, France
    15.6
  141. 136SzczecinWest Pomerania, Poland
    15.6
  142. 142SiedlceMazovia, Poland
    15.5
  143. 142Le HavreNormandy, France
    15.5
  144. 142GdyniaPomerania, Poland
    15.5
  145. 145AntwerpFlanders, Belgium
    15.4
  146. 145DuisburgNorth Rhine-Westphalia, Germany
    15.4
  147. 145San Luis de la PazGuanajuato, Mexico
    15.4
  148. 148PrešovPrešov Region, Slovakia
    15.3
  149. 148StarachowiceŚwiętokrzyskie, Poland
    15.3
  150. 148CaenNormandy, France
    15.3
  151. 148OlomoucOlomouc Region, Czechia
    15.3
  152. 152RouenNormandy, France
    15.2
  153. 153ŁukówLublin, Poland
    15.1
  154. 153EłkWarmia-Masuria, Poland
    15.1
  155. 153BrightonEngland, United Kingdom
    15.1
  156. 153BorkenNorth Rhine-Westphalia, Germany
    15.1
  157. 153WłocławekKujawsko-Pomorskie, Poland
    15.1
  158. 158AcharnésAttica, Greece
    15.0
  159. 158DěčínÚstí nad Labem Region, Czechia
    15.0
  160. 160NottinghamEngland, United Kingdom
    14.9
  161. 160Manchesterlow-cost sensorsEngland, United Kingdom
    14.9
  162. 160GraysEngland, United Kingdom
    14.9
  163. 160EberswaldeBrandenburg, Germany
    14.9
  164. 160MiędzyrzeczLubusz, Poland
    14.9
  165. 160NaplesCampania, Italy
    14.9
  166. 166CardiffWales, United Kingdom
    14.8
  167. 166BexleyEngland, United Kingdom
    14.8
  168. 166ZwijndrechtFlanders, Belgium
    14.8
  169. 166Hradec KrálovéHradec Králové Region, Czechia
    14.8
  170. 166GdańskPomerania, Poland
    14.8
  171. 166BirminghamAlabama, United States
    14.8
  172. 172CanterburyEngland, United Kingdom
    14.7
  173. 172BerlinState of Berlin, Germany
    14.7
  174. 172Cadereyta JiménezNuevo León, Mexico
    14.7
  175. 175MielecSubcarpathia, Poland
    14.6
  176. 175GrajewoPodlasie, Poland
    14.6
  177. 175LochristiFlanders, Belgium
    14.6
  178. 175ParisÎle-de-France, France
    14.6
  179. 175ZnojmoSouth Moravian, Czechia
    14.6
  180. 175SopotPomerania, Poland
    14.6
  181. 175PoznańGreater Poland, Poland
    14.6
  182. 182Saint-QuentinHauts-de-France, France
    14.5
  183. 182AmiensHauts-de-France, France
    14.5
  184. 184OtwockMazovia, Poland
    14.4
  185. 184Ulu BedokSingapore
    14.4
  186. 184KapellenFlanders, Belgium
    14.4
  187. 184AarschotFlanders, Belgium
    14.4
  188. 184LisieuxNormandy, France
    14.4
  189. 184AngersPays de la Loire, France
    14.4
  190. 184AbasoloGuanajuato, Mexico
    14.4
  191. 191PotsdamBrandenburg, Germany
    14.3
  192. 191OldenburgLower Saxony, Germany
    14.3
  193. 191ZlínZlín, Czechia
    14.3
  194. 191PłockMazovia, Poland
    14.3
  195. 195KošiceKošice Region, Slovakia
    14.2
  196. 195Frankfurt (Oder)Brandenburg, Germany
    14.2
  197. 195DattelnNorth Rhine-Westphalia, Germany
    14.2
  198. 195GyőrGyőr-Moson-Sopron, Hungary
    14.2
  199. 195LawrencevilleGeorgia, United States
    14.2
  200. 200JülichNorth Rhine-Westphalia, Germany
    14.1

Top 200 of 1,298 shown.

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