SmogRank / History / July 8, 2023

Most polluted cities on July 8, 2023

1,600 cities ranked by their average PM2.5 over the day; the worst was Thembisa, South Africa, at 111.0 µg/m³. Each city's own local calendar day.

← Thembisa 111.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 8, 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. 1ThembisaGauteng, South Africa
    1907.4×
  2. 2BritsNorth West, South Africa
    1796.4×
  3. 3CoyhaiqueAysén, Chile
    1756.0×
  4. 4BrakpanGauteng, South Africa
    1604.5×
  5. 5Fort McMurrayAlberta, Canada
    1594.4×
  6. 6RengoO'Higgins Region, Chile
    1594.4×
  7. 7ManamaManama, Bahrain
    1544.0×
  8. 8SantiagoSantiago Metropolitan, Chile
    1523.8×
  9. 9MiddelburgMpumalanga, South Africa
    1503.7×
  10. 10NacimientoBiobio, Chile
    1453.6×
  11. 11Karachilow-cost sensorsSindh, Pakistan
    1413.4×
  12. 11CuranilahueBiobio, Chile
    1413.4×
  13. 13JakartaJakarta, Indonesia
    1403.4×
  14. 13TalaganteSantiago Metropolitan, Chile
    1403.4×
  15. 15Puerto AysénAysén, Chile
    1363.3×
  16. 16RancaguaO'Higgins Region, Chile
    1353.3×
  17. 17OsornoLos Lagos Region, Chile
    1283.1×
  18. 18Puente AltoSantiago Metropolitan, Chile
    1212.9×
  19. 19EdmontonAlberta, Canada
    1162.8×
  20. 20PinetownKwaZulu-Natal, South Africa
    1062.5×
  21. 20Santa Anita - Los FicusLima region, Peru
    1062.5×
  22. 22TemucoAraucania, Chile
    1052.5×
  23. 23Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1012.4×
  24. 24Puerto MonttLos Lagos Region, Chile
    982.3×
  25. 25BloemfonteinFree State, South Africa
    982.3×
  26. 26LimaLima Province, Peru
    952.2×
  27. 27QuillotaValparaiso, Chile
    932.1×
  28. 28DushanbeDushanbe, Tajikistan
    912.0×
  29. 29CoquimboCoquimbo Region, Chile
    912.0×
  30. 30HualpénBiobio, Chile
    902.0×
  31. 31La UniónLos Ríos Region, Chile
    902.0×
  32. 31MexicaliBaja California, Mexico
    902.0×
  33. 31Fort St. JohnBritish Columbia, Canada
    902.0×
  34. 34Addis AbabaAddis Ababa, Ethiopia
    881.9×
  35. 35Ga-RankuwaNorth West, South Africa
    881.9×
  36. 36CuricóMaule Region, Chile
    881.9×
  37. 37Puerto VarasLos Lagos Region, Chile
    871.9×
  38. 38SarajevoFederation of B&H, Bosnia and Herzegovina
    871.9×
  39. 39Şabāḩ as SālimMubārak al Kabīr, Kuwait
    861.9×
  40. 40Dhakalow-cost sensorsDhaka Division, Bangladesh
    851.8×
  41. 41PristinaPristina, Kosovo
    851.8×
  42. 42ChennaiTamil Nadu, India
    841.8×
  43. 43Los ÁngelesBiobio, Chile
    841.8×
  44. 44CelayaGuanajuato, Mexico
    841.8×
  45. 44Grande PrairieAlberta, Canada
    841.8×
  46. 46St. AlbertAlberta, Canada
    821.7×
  47. 47La SerenaCoquimbo Region, Chile
    811.7×
  48. 47HualquiBiobio, Chile
    811.7×
  49. 49CauquenesMaule Region, Chile
    801.7×
  50. 49Sherwood ParkAlberta, Canada
    801.7×
  51. 51ChillánÑuble, Chile
    801.6×
  52. 52CoronelBiobio, Chile
    791.6×
  53. 53Nakhon RatchasimaNakhon Ratchasima, Thailand
    781.6×
  54. 54ConcónValparaiso, Chile
    781.6×
  55. 54Villa Poeta José Gálvez BarrenecheaLima region, Peru
    781.6×
  56. 56AricaArica y Parinacota Region, Chile
    771.5×
  57. 57Prince GeorgeBritish Columbia, Canada
    771.5×
  58. 58TalcahuanoBiobio, Chile
    761.5×
  59. 59MukdahanMukdahan, Thailand
    761.5×
  60. 59San CarlosÑuble, Chile
    761.5×
  61. 61Alto HospicioTarapacá, Chile
    751.5×
  62. 62CalexicoCalifornia, United States
    751.5×
  63. 63QuinteroValparaiso, Chile
    741.4×
  64. 63SalamancaGuanajuato, Mexico
    741.4×
  65. 65AntofagastaAntofagasta, Chile
    741.4×
  66. 65Red DeerAlberta, Canada
    741.4×
  67. 67ColomboWestern Province, Sri Lanka
    741.4×
  68. 67Viña del MarValparaiso, Chile
    741.4×
  69. 67ChiguayanteBiobio, Chile
    741.4×
  70. 70AlessandriaPiedmont, Italy
    731.4×
  71. 70Ciudad ApodacaNuevo León, Mexico
    731.4×
  72. 72ValdiviaLos Ríos Region, Chile
    731.4×
  73. 73ToméBiobio, Chile
    731.4×
  74. 74GuadalajaraJalisco, Mexico
    731.4×
  75. 75Bang NaBangkok, Thailand
    721.4×
  76. 75LitvínovÚstí nad Labem Region, Czechia
    721.4×
  77. 77Khlong Sam WaBangkok, Thailand
    721.3×
  78. 78Tha BoNong Khai, Thailand
    711.3×
  79. 78San Francisco De BorjaLima region, Peru
    711.3×
  80. 80TocopillaAntofagasta, Chile
    711.3×
  81. 81São PauloSão Paulo, Brazil
    711.3×
  82. 81TalcaMaule Region, Chile
    711.3×
  83. 83AntananarivoAnalamanga, Madagascar
    711.3×
  84. 84Mexico CityMexico City, Mexico
    701.3×
  85. 84San Pedro de la PazBiobio, Chile
    701.3×
  86. 86Islamabadlow-cost sensorsIslamabad, Pakistan
    701.3×
  87. 87RatchaburiRatchaburi, Thailand
    691.3×
  88. 88NaplesCampania, Italy
    691.2×
  89. 89Si Maha PhotPrachin Buri, Thailand
    691.2×
  90. 89CopiapóAtacama, Chile
    691.2×
  91. 91TrnavaTrnava Region, Slovakia
    691.2×
  92. 92Nong KhaemBangkok, Thailand
    681.2×
  93. 93Santa CatarinaNuevo León, Mexico
    681.2×
  94. 94ConcepciónBiobio, Chile
    681.2×
  95. 95Si Sa KetSi Sa Ket, Thailand
    681.2×
  96. 95Lop BuriLopburi, Thailand
    681.2×
  97. 97KanchanaburiKanchanaburi, Thailand
    671.2×
  98. 97CalamaAntofagasta, Chile
    671.2×
  99. 99Ban Samae DamBangkok, Thailand
    671.2×
  100. 99TijuanaBaja California, Mexico
    671.2×
  101. 99ParadiseCalifornia, United States
    671.2×
  102. 102Saphan SungBangkok, Thailand
    671.2×
  103. 102LephalaleLimpopo, South Africa
    671.2×
  104. 104NanNan, Thailand
    661.1×
  105. 104Khan Na YaoBangkok, Thailand
    661.1×
  106. 106ShenyangLiaoning, China
    661.1×
  107. 107GuangzhouGuangdong, China
    661.1×
  108. 108Udon ThaniUdon Thani, Thailand
    651.1×
  109. 108NitraNitra Region, Slovakia
    651.1×
  110. 110BakuBaki, Azerbaijan
    651.1×
  111. 110PrešovPrešov Region, Slovakia
    651.1×
  112. 110WeidenBavaria, Germany
    651.1×
  113. 110MartinŽilina Region, Slovakia
    651.1×
  114. 110TerraceBritish Columbia, Canada
    651.1×
  115. 115AsprópyrgosAttica, Greece
    651.1×
  116. 115Bueng KumBangkok, Thailand
    651.1×
  117. 117MostÚstí nad Labem Region, Czechia
    641.1×
  118. 118SalorTashkent Region, Uzbekistan
    641.1×
  119. 119MielecSubcarpathia, Poland
    641.1×
  120. 119Sai MaiBangkok, Thailand
    641.1×
  121. 121AthensAttica, Greece
    631.1×
  122. 121RoubaixHauts-de-France, France
    631.1×
  123. 123Khon KaenKhon Kaen, Thailand
    631.0×
  124. 123BéthuneHauts-de-France, France
    631.0×
  125. 123KadaňÚstí nad Labem Region, Czechia
    631.0×
  126. 126Sing BuriSing Buri, Thailand
    631.0×
  127. 126La Línea de la ConcepciónAndalusia, Spain
    631.0×
  128. 128RoeselareFlanders, Belgium
    631.0×
  129. 128BratislavaBratislava Region, Slovakia
    631.0×
  130. 128LotaBiobio, Chile
    631.0×
  131. 128LinaresMaule Region, Chile
    631.0×
  132. 128TrentonNew Jersey, United States
    631.0×
  133. 128Great FallsMontana, United States
    631.0×
  134. 134Mae SotTak, Thailand
    631.0×
  135. 134HalberstadtSaxony-Anhalt, Germany
    631.0×
  136. 134Los AngelesCalifornia, United States
    631.0×
  137. 137EvergemFlanders, Belgium
    621.0×
  138. 137BensalemPennsylvania, United States
    621.0×
  139. 137Arroyo GrandeCalifornia, United States
    621.0×
  140. 140StarachowiceŚwiętokrzyskie, Poland
    621.0×
  141. 140PhetchabunPhetchabun, Thailand
    621.0×
  142. 140San Luis de la PazGuanajuato, Mexico
    621.0×
  143. 143AmmanAmman, Jordan
    621.0×
  144. 143Bang KapiBangkok, Thailand
    621.0×
  145. 143MostaIl-Mosta, Malta
    621.0×
  146. 143ValenciennesHauts-de-France, France
    621.0×
  147. 143MonterreyNuevo León, Mexico
    621.0×
  148. 143Santa ClaritaCalifornia, United States
    621.0×
  149. 149Khlong LuangPathum Thani, Thailand
    621.0×
  150. 149PesaroThe Marches, Italy
    621.0×
  151. 149CatañoCataño, Puerto Rico
    621.0×
  152. 152AstanaAstana, Kazakhstan
    611.0×
  153. 153KošiceKošice Region, Slovakia
    611.0×
  154. 153NurembergBavaria, Germany
    611.0×
  155. 153Český TěšínMoravian-Silesian Region, Czechia
    611.0×
  156. 156CoburgBavaria, Germany
    611.0×
  157. 156SenicaTrnava Region, Slovakia
    611.0×
  158. 156DěčínÚstí nad Labem Region, Czechia
    611.0×
  159. 156San Miguel de AllendeGuanajuato, Mexico
    611.0×
  160. 156León de los AldamaGuanajuato, Mexico
    611.0×
  161. 161ElizabethNew Jersey, United States
    611.0×
  162. 161FontanaCalifornia, United States
    611.0×
  163. 163LublinLublin, Poland
    611.0×
  164. 163Bang Bo DistrictSamut Prakan, Thailand
    611.0×
  165. 163MaldegemFlanders, Belgium
    611.0×
  166. 163Jurupa ValleyCalifornia, United States
    611.0×
  167. 167Sakon NakhonSakon Nakhon, Thailand
    610.9×
  168. 167Burg bei MagdeburgSaxony-Anhalt, Germany
    610.9×
  169. 169YalaYala, Thailand
    600.9×
  170. 169Velsen-ZuidNorth Holland, The Netherlands
    600.9×
  171. 169Ludwigshafen am RheinRheinland-Pfalz, Germany
    600.9×
  172. 169KrefeldNorth Rhine-Westphalia, Germany
    600.9×
  173. 169ŽilinaŽilina Region, Slovakia
    600.9×
  174. 174JeddahMecca Region, Saudi Arabia
    600.9×
  175. 174NiskoSubcarpathia, Poland
    600.9×
  176. 174GranadaAndalusia, Spain
    600.9×
  177. 174IJsselsteinUtrecht, The Netherlands
    600.9×
  178. 174HomesteadFlorida, United States
    600.9×
  179. 174La Crescenta-Montroselow-cost sensorsCalifornia, United States
    600.9×
  180. 180PalmaBalearic Islands, Spain
    600.9×
  181. 181AnsbachBavaria, Germany
    600.9×
  182. 181ThionvilleGrand Est, France
    600.9×
  183. 181Lat KrabangBangkok, Thailand
    600.9×
  184. 184Spišská Nová VesKošice Region, Slovakia
    600.9×
  185. 184PhraePhrae, Thailand
    600.9×
  186. 184ChanthaburiChanthaburi, Thailand
    600.9×
  187. 184AmsterdamNorth Holland, The Netherlands
    600.9×
  188. 184WormsRheinland-Pfalz, Germany
    600.9×
  189. 189NarathiwatNarathiwat, Thailand
    590.9×
  190. 189CardiffWales, United Kingdom
    590.9×
  191. 189BadhoevedorpNorth Holland, The Netherlands
    590.9×
  192. 189MunichBavaria, Germany
    590.9×
  193. 189KaiserslauternRheinland-Pfalz, Germany
    590.9×
  194. 194KolkataWest Bengal, India
    590.9×
  195. 194Ban ChangRayong, Thailand
    590.9×
  196. 194BrightonEngland, United Kingdom
    590.9×
  197. 194IzegemFlanders, Belgium
    590.9×
  198. 194Torrejón de ArdozMadrid, Spain
    590.9×
  199. 194AbasoloGuanajuato, Mexico
    590.9×
  200. 194El CentroCalifornia, United States
    590.9×

Top 200 of 1,600 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, July 8, 2023, smogrank.com/history/2023-07-08 (accessed 2 Oct 2026).

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