SmogRank / History / May 27, 2023

Most polluted cities on May 27, 2023

1,279 cities ranked by their average PM2.5 over the day; the worst was Puerto Montt, Chile, at 170.0 µg/m³. Each city's own local calendar day.

← Puerto Montt 170.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for May 27, 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. 1Puerto MonttLos Lagos Region, Chile
    24511.3×
  2. 2Puerto VarasLos Lagos Region, Chile
    22910.3×
  3. 3OsornoLos Lagos Region, Chile
    2119.1×
  4. 4BeijingBeijing, China
    1624.8×
  5. 5La UniónLos Ríos Region, Chile
    1614.7×
  6. 6Dhakalow-cost sensorsDhaka Division, Bangladesh
    1584.4×
  7. 7BaghdadBaghdad, Iraq
    1584.3×
  8. 8HualpénBiobio, Chile
    1574.3×
  9. 9Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1554.1×
  10. 10CoyhaiqueAysén, Chile
    1513.7×
  11. 11San CarlosÑuble, Chile
    1453.6×
  12. 12HyderabadTelangana, India
    1393.4×
  13. 13RabinalBaja Verapaz, Guatemala
    1273.1×
  14. 13Guatemala CityGuatemala, Guatemala
    1273.1×
  15. 15HualquiBiobio, Chile
    1263.0×
  16. 16ValdiviaLos Ríos Region, Chile
    1233.0×
  17. 17CoronelBiobio, Chile
    1222.9×
  18. 18TemucoAraucania, Chile
    1202.9×
  19. 19NacimientoBiobio, Chile
    1202.9×
  20. 20ChillánÑuble, Chile
    1182.8×
  21. 21RengoO'Higgins Region, Chile
    1172.8×
  22. 22Lahorelow-cost sensorsPunjab, Pakistan
    1142.7×
  23. 23Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1132.7×
  24. 24Puerto AysénAysén, Chile
    1132.7×
  25. 25Puente AltoSantiago Metropolitan, Chile
    1112.6×
  26. 26SantiagoSantiago Metropolitan, Chile
    1092.6×
  27. 27TalaganteSantiago Metropolitan, Chile
    1092.6×
  28. 28CuranilahueBiobio, Chile
    1082.6×
  29. 29KigaliKigali, Rwanda
    1072.5×
  30. 29RancaguaO'Higgins Region, Chile
    1072.5×
  31. 31TalcahuanoBiobio, Chile
    992.3×
  32. 32ChennaiTamil Nadu, India
    982.3×
  33. 32CuricóMaule Region, Chile
    982.3×
  34. 34ToméBiobio, Chile
    982.3×
  35. 35Islamabadlow-cost sensorsIslamabad, Pakistan
    942.1×
  36. 36DushanbeDushanbe, Tajikistan
    932.1×
  37. 37DelhiDelhi, India
    902.0×
  38. 38KolkataWest Bengal, India
    902.0×
  39. 39RuseRuse, Bulgaria
    902.0×
  40. 40CelayaGuanajuato, Mexico
    892.0×
  41. 41ChiguayanteBiobio, Chile
    881.9×
  42. 42Kampalalow-cost sensorsCentral Region, Uganda
    881.9×
  43. 42QuillotaValparaiso, Chile
    881.9×
  44. 44CopiapóAtacama, Chile
    861.9×
  45. 45Nong KhaemBangkok, Thailand
    861.9×
  46. 46LinaresMaule Region, Chile
    861.8×
  47. 47PristinaPristina, Kosovo
    851.8×
  48. 48Bang Bo DistrictSamut Prakan, Thailand
    851.8×
  49. 49Samut PrakanSamut Prakan, Thailand
    831.8×
  50. 50BangkokBangkok, Thailand
    831.8×
  51. 51ShenyangLiaoning, China
    831.8×
  52. 52ConcepciónBiobio, Chile
    831.7×
  53. 53Phra PradaengSamut Prakan, Thailand
    831.7×
  54. 53Ribarroja del TuriaValencia, Spain
    831.7×
  55. 53les EscaldesEscaldes-Engordany, Andorra
    831.7×
  56. 53CauquenesMaule Region, Chile
    831.7×
  57. 57TocopillaAntofagasta, Chile
    821.7×
  58. 58QuinteroValparaiso, Chile
    821.7×
  59. 59Bang KapiBangkok, Thailand
    821.7×
  60. 60La SerenaCoquimbo Region, Chile
    811.7×
  61. 61CoquimboCoquimbo Region, Chile
    811.7×
  62. 62AntofagastaAntofagasta, Chile
    811.7×
  63. 63Khlong LuangPathum Thani, Thailand
    811.7×
  64. 64EdmontonAlberta, Canada
    801.6×
  65. 65BakuBaki, Azerbaijan
    791.6×
  66. 65Samut SakhonSamut Sakhon, Thailand
    791.6×
  67. 67AmmanAmman, Jordan
    791.6×
  68. 68Los ÁngelesBiobio, Chile
    791.6×
  69. 69SalamancaGuanajuato, Mexico
    781.6×
  70. 69Fort WorthTexas, United States
    781.6×
  71. 71Nakhon PathomNakhon Pathom, Thailand
    781.6×
  72. 72SulphurLouisiana, United States
    781.6×
  73. 73JeddahMecca Region, Saudi Arabia
    771.6×
  74. 73SaginawTexas, United States
    771.6×
  75. 75Mueang NonthaburiNonthaburi, Thailand
    771.5×
  76. 75AustinTexas, United States
    771.5×
  77. 75Fort McMurrayAlberta, Canada
    771.5×
  78. 75San Pedro de la PazBiobio, Chile
    771.5×
  79. 79ConroeTexas, United States
    771.5×
  80. 79HoustonTexas, United States
    771.5×
  81. 81AricaArica y Parinacota Region, Chile
    761.5×
  82. 82HanoiHanoi, Vietnam
    761.5×
  83. 83Port ArthurTexas, United States
    761.5×
  84. 84BeltonTexas, United States
    751.5×
  85. 85Missouri CityTexas, United States
    751.5×
  86. 86GuangzhouGuangdong, China
    751.5×
  87. 86BaytownTexas, United States
    751.5×
  88. 88MooreOklahoma, United States
    751.5×
  89. 89Viña del MarValparaiso, Chile
    741.4×
  90. 90ConcónValparaiso, Chile
    731.4×
  91. 90St. AlbertAlberta, Canada
    731.4×
  92. 92Mission BendTexas, United States
    731.4×
  93. 93College StationTexas, United States
    731.4×
  94. 94TalcaMaule Region, Chile
    731.4×
  95. 94Alto HospicioTarapacá, Chile
    731.4×
  96. 94PasadenaTexas, United States
    731.4×
  97. 97Oklahoma CityOklahoma, United States
    731.4×
  98. 98CalamaAntofagasta, Chile
    721.4×
  99. 98EdmondOklahoma, United States
    721.4×
  100. 98CorsicanaTexas, United States
    721.4×
  101. 101DallasTexas, United States
    721.4×
  102. 102HobbsNew Mexico, United States
    721.4×
  103. 103BelmopanCayo District, Belize
    711.3×
  104. 104NišCentral Serbia, Serbia
    711.3×
  105. 104Mexico CityMexico City, Mexico
    711.3×
  106. 104JacksonMississippi, United States
    711.3×
  107. 107DentonTexas, United States
    711.3×
  108. 108LorientBrittany, France
    701.3×
  109. 109ValenciaValencia, Spain
    701.3×
  110. 110AntananarivoAnalamanga, Madagascar
    691.3×
  111. 110AlessandriaPiedmont, Italy
    691.3×
  112. 110La PorteTexas, United States
    691.3×
  113. 113PesaroThe Marches, Italy
    691.3×
  114. 113Ecatepec de MorelosMéxico, Mexico
    691.3×
  115. 115TexarkanaTexas, United States
    691.2×
  116. 116Live OakTexas, United States
    691.2×
  117. 117AlgiersAlgiers, Algeria
    681.2×
  118. 118BéthuneHauts-de-France, France
    681.2×
  119. 119YangonYangon, Myanmar
    681.2×
  120. 120Karachilow-cost sensorsSindh, Pakistan
    681.2×
  121. 120São PauloSão Paulo, Brazil
    681.2×
  122. 122ElizabethNew Jersey, United States
    671.2×
  123. 123LotaBiobio, Chile
    671.2×
  124. 124La Línea de la ConcepciónAndalusia, Spain
    671.2×
  125. 124San Luis de la PazGuanajuato, Mexico
    671.2×
  126. 124Red DeerAlberta, Canada
    671.2×
  127. 127SalorTashkent Region, Uzbekistan
    661.2×
  128. 127Silao de la VictoriaGuanajuato, Mexico
    661.2×
  129. 127GuanajuatoGuanajuato, Mexico
    661.2×
  130. 127Ciudad JuárezChihuahua, Mexico
    661.2×
  131. 131AshgabatAshgabat, Turkmenistan
    661.1×
  132. 131RichmondBritish Columbia, Canada
    661.1×
  133. 133GraysEngland, United Kingdom
    651.1×
  134. 134Ulu BedokSingapore
    651.1×
  135. 134RichmondCalifornia, United States
    651.1×
  136. 134HamiltonOntario, Canada
    651.1×
  137. 137Baton RougeLouisiana, United States
    651.1×
  138. 138Queenstown Estatelow-cost sensorsSingapore
    641.1×
  139. 138MarseilleProvence-Alpes-Côte d'Azur, France
    641.1×
  140. 140CuencaCastille-La Mancha, Spain
    641.1×
  141. 141AnnecyAuvergne-Rhône-Alpes, France
    641.1×
  142. 141HavířovMoravian-Silesian Region, Czechia
    641.1×
  143. 143Saint-BrieucBrittany, France
    641.1×
  144. 143BrestBrittany, France
    641.1×
  145. 143Gasteiz / VitoriaBasque Country, Spain
    641.1×
  146. 146HernandoMississippi, United States
    631.1×
  147. 146ParadiseCalifornia, United States
    631.1×
  148. 148Addis AbabaAddis Ababa, Ethiopia
    631.0×
  149. 148MelunÎle-de-France, France
    631.0×
  150. 150San AntonioTexas, United States
    631.0×
  151. 150Sherwood ParkAlberta, Canada
    631.0×
  152. 152AirdrieAlberta, Canada
    631.0×
  153. 153Falconara MarittimaThe Marches, Italy
    631.0×
  154. 154Sainte-Geneviève-des-BoisÎle-de-France, France
    621.0×
  155. 154CaenNormandy, France
    621.0×
  156. 156Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    621.0×
  157. 156Novi SadVojvodina, Serbia
    621.0×
  158. 156HattiesburgMississippi, United States
    621.0×
  159. 156CalgaryAlberta, Canada
    621.0×
  160. 160EvergemFlanders, Belgium
    621.0×
  161. 160PécsBaranya, Hungary
    621.0×
  162. 160Český TěšínMoravian-Silesian Region, Czechia
    621.0×
  163. 163ThionvilleGrand Est, France
    621.0×
  164. 163Frýdek-MístekMoravian-Silesian Region, Czechia
    621.0×
  165. 163San Miguel de AllendeGuanajuato, Mexico
    621.0×
  166. 163Ponca CityOklahoma, United States
    621.0×
  167. 167SliemaTas-Sliema, Malta
    621.0×
  168. 167Corpus ChristiTexas, United States
    621.0×
  169. 169Lincoln ParkMichigan, United States
    611.0×
  170. 170ShreveportLouisiana, United States
    611.0×
  171. 170AdaOklahoma, United States
    611.0×
  172. 172BernBern, Switzerland
    611.0×
  173. 172RoeselareFlanders, Belgium
    611.0×
  174. 172BilbaoBasque Country, Spain
    611.0×
  175. 175DieppeNormandy, France
    611.0×
  176. 175BogotáBogota D.C., Colombia
    611.0×
  177. 175LiberpolisCounty of Osijek-Baranja, Croatia
    611.0×
  178. 178ToledoCastille-La Mancha, Spain
    611.0×
  179. 178MenenFlanders, Belgium
    611.0×
  180. 178IzegemFlanders, Belgium
    611.0×
  181. 178VitrollesProvence-Alpes-Côte d'Azur, France
    611.0×
  182. 182LilleHauts-de-France, France
    610.9×
  183. 182Laudio / LlodioBasque Country, Spain
    610.9×
  184. 184NordhausenThuringia, Germany
    600.9×
  185. 184LuxembourgLuxembourg, Luxembourg
    600.9×
  186. 184VannesBrittany, France
    600.9×
  187. 184BeneventoCampania, Italy
    600.9×
  188. 184TulsaOklahoma, United States
    600.9×
  189. 184MaryvilleTennessee, United States
    600.9×
  190. 190McAlesterOklahoma, United States
    600.9×
  191. 191BelgradeCentral Serbia, Serbia
    600.9×
  192. 191TorreviejaValencia, Spain
    600.9×
  193. 191VeszprémVeszprém, Hungary
    600.9×
  194. 191PisaTuscany, Italy
    600.9×
  195. 191JacksonTennessee, United States
    600.9×
  196. 196WaregemFlanders, Belgium
    600.9×
  197. 196Fos-sur-MerProvence-Alpes-Côte d'Azur, France
    600.9×
  198. 198Kathmandulow-cost sensorsBagmati Province, Nepal
    600.9×
  199. 198TrierRheinland-Pfalz, Germany
    600.9×
  200. 198RoveretoTrentino-Alto Adige, Italy
    600.9×

Top 200 of 1,279 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 27, 2023, smogrank.com/history/2023-05-27 (accessed 2 Oct 2026).

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