SmogRank / History / May 24, 2023

Most polluted cities on May 24, 2023

1,401 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 96.0 µg/m³. Each city's own local calendar day.

← Coyhaique 96.0 µg/m³ 90 µg/m³15 WHO 24-hour guideline
Every city ranked for May 24, 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. 1CoyhaiqueAysén, Chile
    1796.4×
  2. 2JakartaJakarta, Indonesia
    1695.4×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    1594.5×
  4. 4BaghdadBaghdad, Iraq
    1554.1×
  5. 5HualquiBiobio, Chile
    1483.6×
  6. 6HyderabadTelangana, India
    1313.2×
  7. 7BeijingBeijing, China
    1303.2×
  8. 8HanoiHanoi, Vietnam
    1273.1×
  9. 9SantiagoSantiago Metropolitan, Chile
    1222.9×
  10. 10Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1152.8×
  11. 11Lahorelow-cost sensorsPunjab, Pakistan
    1122.7×
  12. 12TalaganteSantiago Metropolitan, Chile
    1082.6×
  13. 13CelayaGuanajuato, Mexico
    1082.5×
  14. 14ShenyangLiaoning, China
    1052.5×
  15. 15NacimientoBiobio, Chile
    1022.4×
  16. 16RengoO'Higgins Region, Chile
    1022.4×
  17. 17AntananarivoAnalamanga, Madagascar
    1012.4×
  18. 17Des MoinesIowa, United States
    1012.4×
  19. 19Nong KhaemBangkok, Thailand
    992.3×
  20. 20RancaguaO'Higgins Region, Chile
    952.2×
  21. 21Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    942.1×
  22. 22Puerto AysénAysén, Chile
    932.1×
  23. 22SalamancaGuanajuato, Mexico
    932.1×
  24. 24Khlong LuangPathum Thani, Thailand
    922.1×
  25. 25Kathmandulow-cost sensorsBagmati Province, Nepal
    912.0×
  26. 26CuranilahueBiobio, Chile
    902.0×
  27. 27PristinaPristina, Kosovo
    902.0×
  28. 28QuinteroValparaiso, Chile
    892.0×
  29. 28LinaresMaule Region, Chile
    892.0×
  30. 30DelhiDelhi, India
    892.0×
  31. 31Puente AltoSantiago Metropolitan, Chile
    881.9×
  32. 32Addis AbabaAddis Ababa, Ethiopia
    881.9×
  33. 33Samut SakhonSamut Sakhon, Thailand
    861.9×
  34. 34BaytownTexas, United States
    861.9×
  35. 35RabinalBaja Verapaz, Guatemala
    851.8×
  36. 35Guatemala CityGuatemala, Guatemala
    851.8×
  37. 37PasadenaTexas, United States
    851.8×
  38. 38MielecSubcarpathia, Poland
    851.8×
  39. 38La UniónLos Ríos Region, Chile
    851.8×
  40. 40CauquenesMaule Region, Chile
    841.8×
  41. 41GalvestonTexas, United States
    841.8×
  42. 42BangkokBangkok, Thailand
    831.8×
  43. 43DushanbeDushanbe, Tajikistan
    831.7×
  44. 44Mexico CityMexico City, Mexico
    831.7×
  45. 44ConroeTexas, United States
    831.7×
  46. 46Grande PrairieAlberta, Canada
    821.7×
  47. 47ChennaiTamil Nadu, India
    821.7×
  48. 48DębicaSubcarpathia, Poland
    821.7×
  49. 49KolkataWest Bengal, India
    811.7×
  50. 49QuillotaValparaiso, Chile
    811.7×
  51. 51GuangzhouGuangdong, China
    811.7×
  52. 52OsornoLos Lagos Region, Chile
    811.7×
  53. 53KielceŚwiętokrzyskie, Poland
    811.7×
  54. 53La PorteTexas, United States
    811.7×
  55. 55West MifflinPennsylvania, United States
    801.7×
  56. 56SulphurLouisiana, United States
    801.6×
  57. 57Phra PradaengSamut Prakan, Thailand
    801.6×
  58. 57CuricóMaule Region, Chile
    801.6×
  59. 59Bang KapiBangkok, Thailand
    801.6×
  60. 60Port ArthurTexas, United States
    791.6×
  61. 60ParadiseCalifornia, United States
    791.6×
  62. 62HoustonTexas, United States
    791.6×
  63. 63HernandoMississippi, United States
    791.6×
  64. 64YangonYangon, Myanmar
    781.6×
  65. 64Puerto VarasLos Lagos Region, Chile
    781.6×
  66. 66Islamabadlow-cost sensorsIslamabad, Pakistan
    781.6×
  67. 66São PauloSão Paulo, Brazil
    781.6×
  68. 66AntofagastaAntofagasta, Chile
    781.6×
  69. 69AmmanAmman, Jordan
    771.6×
  70. 70CoronelBiobio, Chile
    771.5×
  71. 71BakuBaki, Azerbaijan
    771.5×
  72. 71MooreOklahoma, United States
    771.5×
  73. 73SpringdaleArkansas, United States
    771.5×
  74. 74Bang Bo DistrictSamut Prakan, Thailand
    761.5×
  75. 75Viña del MarValparaiso, Chile
    761.5×
  76. 76WłocławekKujawsko-Pomorskie, Poland
    761.5×
  77. 77ConcónValparaiso, Chile
    751.5×
  78. 77Oklahoma CityOklahoma, United States
    751.5×
  79. 79Puerto MonttLos Lagos Region, Chile
    751.5×
  80. 79BirminghamAlabama, United States
    751.5×
  81. 81KigaliKigali, Rwanda
    751.5×
  82. 82ToruńKujawsko-Pomorskie, Poland
    751.5×
  83. 82PesaroThe Marches, Italy
    751.5×
  84. 84PłockMazovia, Poland
    751.5×
  85. 85AshgabatAshgabat, Turkmenistan
    741.4×
  86. 85East RidgeTennessee, United States
    741.4×
  87. 87ChattanoogaTennessee, United States
    741.4×
  88. 88León de los AldamaGuanajuato, Mexico
    741.4×
  89. 89AbasoloGuanajuato, Mexico
    731.4×
  90. 89EdmondOklahoma, United States
    731.4×
  91. 91Alto HospicioTarapacá, Chile
    731.4×
  92. 91Swift CurrentSaskatchewan, Canada
    731.4×
  93. 93ŻyrardówMazovia, Poland
    721.4×
  94. 93IndianapolisIndiana, United States
    721.4×
  95. 95TrussvilleAlabama, United States
    721.4×
  96. 95GainesvilleGeorgia, United States
    721.4×
  97. 97Samut PrakanSamut Prakan, Thailand
    721.4×
  98. 97CoquimboCoquimbo Region, Chile
    721.4×
  99. 99KnoxvilleTennessee, United States
    721.4×
  100. 100Mueang NonthaburiNonthaburi, Thailand
    721.3×
  101. 100Missouri CityTexas, United States
    721.3×
  102. 102CopiapóAtacama, Chile
    711.3×
  103. 103Laudio / LlodioBasque Country, Spain
    711.3×
  104. 104TemucoAraucania, Chile
    711.3×
  105. 104DerbyKansas, United States
    711.3×
  106. 104ThorntonColorado, United States
    711.3×
  107. 107TocopillaAntofagasta, Chile
    711.3×
  108. 107San Pedro de la PazBiobio, Chile
    711.3×
  109. 109JeffersonvilleIndiana, United States
    711.3×
  110. 109ClevelandOhio, United States
    711.3×
  111. 111ŚwiecieKujawsko-Pomorskie, Poland
    701.3×
  112. 111KrakówLesser Poland, Poland
    701.3×
  113. 111AthensGeorgia, United States
    701.3×
  114. 111Mission BendTexas, United States
    701.3×
  115. 115TalcahuanoBiobio, Chile
    701.3×
  116. 116LawrencevilleGeorgia, United States
    701.3×
  117. 117Jastrzębie ZdrójSilesia, Poland
    701.3×
  118. 117Silao de la VictoriaGuanajuato, Mexico
    701.3×
  119. 117Valley StationKentucky, United States
    701.3×
  120. 120ŁódźŁódź Voivodeship, Poland
    701.3×
  121. 120ChillánÑuble, Chile
    701.3×
  122. 122Nakhon PathomNakhon Pathom, Thailand
    691.3×
  123. 122JeffersontownKentucky, United States
    691.3×
  124. 124JeddahMecca Region, Saudi Arabia
    691.3×
  125. 124BelgradeCentral Serbia, Serbia
    691.3×
  126. 124MarseilleProvence-Alpes-Côte d'Azur, France
    691.3×
  127. 124ŁaskŁódź Voivodeship, Poland
    691.3×
  128. 124TalcaMaule Region, Chile
    691.3×
  129. 124AricaArica y Parinacota Region, Chile
    691.3×
  130. 124HuntsvilleAlabama, United States
    691.3×
  131. 124St. LouisMissouri, United States
    691.3×
  132. 124RoanokeVirginia, United States
    691.3×
  133. 124South BendIndiana, United States
    691.3×
  134. 124KalamazooMichigan, United States
    691.3×
  135. 135DurangoBasque Country, Spain
    691.2×
  136. 135Rapid CitySouth Dakota, United States
    691.2×
  137. 137HueytownAlabama, United States
    691.2×
  138. 137MiddletownOhio, United States
    691.2×
  139. 137NorwoodOhio, United States
    691.2×
  140. 137Oak LawnIllinois, United States
    691.2×
  141. 141Karachilow-cost sensorsSindh, Pakistan
    691.2×
  142. 141MaconGeorgia, United States
    691.2×
  143. 143AlbanyGeorgia, United States
    681.2×
  144. 143HobbsNew Mexico, United States
    681.2×
  145. 143Fort McMurrayAlberta, Canada
    681.2×
  146. 146TarnówLesser Poland, Poland
    681.2×
  147. 146GadsdenAlabama, United States
    681.2×
  148. 146LouisvilleKentucky, United States
    681.2×
  149. 149RzeszówSubcarpathia, Poland
    681.2×
  150. 149BurnsvilleMinnesota, United States
    681.2×
  151. 149SteubenvilleOhio, United States
    681.2×
  152. 152Ponca CityOklahoma, United States
    681.2×
  153. 153ReginaSaskatchewan, Canada
    681.2×
  154. 154ElizabethtownKentucky, United States
    671.2×
  155. 154CorsicanaTexas, United States
    671.2×
  156. 154CantonOhio, United States
    671.2×
  157. 154PittsburghPennsylvania, United States
    671.2×
  158. 158Novi SadVojvodina, Serbia
    671.2×
  159. 158Lexington-FayetteKentucky, United States
    671.2×
  160. 160LotaBiobio, Chile
    671.2×
  161. 160East Saint LouisIllinois, United States
    671.2×
  162. 160CincinnatiOhio, United States
    671.2×
  163. 160BartlettTennessee, United States
    671.2×
  164. 160Fort WorthTexas, United States
    671.2×
  165. 165OwensboroKentucky, United States
    671.2×
  166. 166MontgomeryAlabama, United States
    671.2×
  167. 166HarrisburgPennsylvania, United States
    671.2×
  168. 166DenverColorado, United States
    671.2×
  169. 169EvansvilleIndiana, United States
    661.2×
  170. 169TexarkanaTexas, United States
    661.2×
  171. 169AltoonaPennsylvania, United States
    661.2×
  172. 172Warner RobinsGeorgia, United States
    661.2×
  173. 172FlintMichigan, United States
    661.2×
  174. 174AthensAttica, Greece
    661.1×
  175. 174Los ÁngelesBiobio, Chile
    661.1×
  176. 174AshlandKentucky, United States
    661.1×
  177. 174Saint MatthewsKentucky, United States
    661.1×
  178. 174GreeleyColorado, United States
    661.1×
  179. 179GrajewoPodlasie, Poland
    661.1×
  180. 179ModugnoApulia, Italy
    661.1×
  181. 179AlessandriaPiedmont, Italy
    661.1×
  182. 179ValdiviaLos Ríos Region, Chile
    661.1×
  183. 179CalamaAntofagasta, Chile
    661.1×
  184. 179ValdostaGeorgia, United States
    661.1×
  185. 179GreenvilleSouth Carolina, United States
    661.1×
  186. 179ShakopeeMinnesota, United States
    661.1×
  187. 179CarlislePennsylvania, United States
    661.1×
  188. 179WatertownSouth Dakota, United States
    661.1×
  189. 189Jelenia GóraLower Silesia, Poland
    661.1×
  190. 189Kansas CityKansas, United States
    661.1×
  191. 189KingsportTennessee, United States
    661.1×
  192. 189Apple ValleyMinnesota, United States
    661.1×
  193. 193KutnoŁódź Voivodeship, Poland
    661.1×
  194. 193YoungstownOhio, United States
    661.1×
  195. 193Candler-McAfeeGeorgia, United States
    661.1×
  196. 196KaunasKaunas, Lithuania
    651.1×
  197. 196BilbaoBasque Country, Spain
    651.1×
  198. 196ChiguayanteBiobio, Chile
    651.1×
  199. 196PaducahKentucky, United States
    651.1×
  200. 200PrešovPrešov Region, Slovakia
    651.1×

Top 200 of 1,401 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, May 24, 2023, smogrank.com/history/2023-05-24 (accessed 2 Oct 2026).

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