SmogRank / History / May 27, 2024

Most polluted cities on May 27, 2024

2,291 cities ranked by their average PM2.5 over the day; the worst was Osorno, Chile, at 313.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 27, 2024. All episodes.

← Osorno 313.5 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for May 27, 2024, 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. 1OsornoLos Lagos Region, Chile
    47620.9×
  2. 2CoyhaiqueAysén, Chile
    38317.8×
  3. 3Puerto VarasLos Lagos Region, Chile
    23810.9×
  4. 4NacimientoBiobio, Chile
    23210.5×
  5. 5N'DjamenaN’Djaména, Chad
    22510.0×
  6. 6Santa Anita - Los FicusLima region, Peru
    2048.6×
  7. 7San CarlosÑuble, Chile
    2008.3×
  8. 8HualpénBiobio, Chile
    1968.0×
  9. 9ValdiviaLos Ríos Region, Chile
    1917.5×
  10. 10Los ÁngelesBiobio, Chile
    1816.5×
  11. 11CuranilahueBiobio, Chile
    1796.3×
  12. 12La UniónLos Ríos Region, Chile
    1796.3×
  13. 13ChillánÑuble, Chile
    1745.9×
  14. 14TalcahuanoBiobio, Chile
    1715.6×
  15. 15BakuBaki, Azerbaijan
    1705.5×
  16. 16DelhiDelhi, India
    1695.4×
  17. 17Puerto AysénAysén, Chile
    1665.1×
  18. 18CuricóMaule Region, Chile
    1644.9×
  19. 19TemucoAraucania, Chile
    1614.6×
  20. 20HualquiBiobio, Chile
    1604.6×
  21. 21CoronelBiobio, Chile
    1584.4×
  22. 22ConcepciónBiobio, Chile
    1544.0×
  23. 23BelmopanCayo District, Belize
    1543.9×
  24. 24ChiguayanteBiobio, Chile
    1533.9×
  25. 25MissionTexas, United States
    1533.9×
  26. 26San Pedro de la PazBiobio, Chile
    1533.8×
  27. 27CauquenesMaule Region, Chile
    1513.7×
  28. 28ToméBiobio, Chile
    1443.5×
  29. 29EdinburgTexas, United States
    1433.5×
  30. 30RancaguaO'Higgins Region, Chile
    1423.5×
  31. 31CairoCairo, Egypt
    1423.5×
  32. 32Corpus ChristiTexas, United States
    1413.5×
  33. 33TalcaMaule Region, Chile
    1403.4×
  34. 34Heroica MatamorosTamaulipas, Mexico
    1383.4×
  35. 35San Francisco De BorjaLima region, Peru
    1343.3×
  36. 36Live OakTexas, United States
    1323.2×
  37. 37RengoO'Higgins Region, Chile
    1313.2×
  38. 38TalaganteSantiago Metropolitan, Chile
    1303.2×
  39. 39Lahorelow-cost sensorsPunjab, Pakistan
    1273.1×
  40. 40Mission BendTexas, United States
    1202.9×
  41. 40PasadenaTexas, United States
    1202.9×
  42. 42RabinalBaja Verapaz, Guatemala
    1192.9×
  43. 43LimaLima Province, Peru
    1182.8×
  44. 44Guatemala CityGuatemala, Guatemala
    1162.8×
  45. 44Puerto MonttLos Lagos Region, Chile
    1162.8×
  46. 46Addis AbabaAddis Ababa, Ethiopia
    1162.8×
  47. 47JakartaJakarta, Indonesia
    1152.7×
  48. 48QuilpuéValparaiso, Chile
    1142.7×
  49. 49SantiagoSantiago Metropolitan, Chile
    1142.7×
  50. 49AustinTexas, United States
    1142.7×
  51. 51HoustonTexas, United States
    1132.7×
  52. 52Missouri CityTexas, United States
    1132.7×
  53. 53Ciudad ApodacaNuevo León, Mexico
    1112.6×
  54. 54BaytownTexas, United States
    1102.6×
  55. 54DallasTexas, United States
    1102.6×
  56. 56BeijingBeijing, China
    1072.5×
  57. 57Puente AltoSantiago Metropolitan, Chile
    1032.4×
  58. 57San MarcosTexas, United States
    1032.4×
  59. 59Kampalalow-cost sensorsCentral Region, Uganda
    992.3×
  60. 60CorsicanaTexas, United States
    972.3×
  61. 61La PorteTexas, United States
    962.2×
  62. 62GalvestonTexas, United States
    962.2×
  63. 63San AntonioTexas, United States
    962.2×
  64. 64Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    962.2×
  65. 65BaghdadBaghdad, Iraq
    952.2×
  66. 66Abujalow-cost sensorsFCT, Nigeria
    932.1×
  67. 67Kathmandulow-cost sensorsBagmati Province, Nepal
    932.1×
  68. 68SulphurLouisiana, United States
    922.1×
  69. 69Eagle PassTexas, United States
    912.0×
  70. 70Karachilow-cost sensorsSindh, Pakistan
    902.0×
  71. 71TaylorTexas, United States
    902.0×
  72. 72Islamabadlow-cost sensorsIslamabad, Pakistan
    902.0×
  73. 73Silao de la VictoriaGuanajuato, Mexico
    892.0×
  74. 74MukdahanMukdahan, Thailand
    892.0×
  75. 74ConroeTexas, United States
    892.0×
  76. 76VillarricaAraucania, Chile
    881.9×
  77. 77CallaoCallao, Peru
    881.9×
  78. 77RangioraCanterbury, New Zealand
    881.9×
  79. 79AguascalientesAguascalientes, Mexico
    881.9×
  80. 80HanoiHanoi, Vietnam
    871.9×
  81. 81QuillotaValparaiso, Chile
    871.9×
  82. 82Fort WorthTexas, United States
    851.8×
  83. 83ChristchurchCanterbury, New Zealand
    851.8×
  84. 84Villa Poeta José Gálvez BarrenecheaLima region, Peru
    851.8×
  85. 85CelayaGuanajuato, Mexico
    831.8×
  86. 86León de los AldamaGuanajuato, Mexico
    821.7×
  87. 87PueblaPuebla, Mexico
    801.7×
  88. 87San Luis de la PazGuanajuato, Mexico
    801.7×
  89. 87College StationTexas, United States
    801.7×
  90. 90AlgiersAlgiers, Algeria
    801.7×
  91. 91SaginawTexas, United States
    801.6×
  92. 92AntananarivoAnalamanga, Madagascar
    801.6×
  93. 93IshinomakiMiyagi, Japan
    791.6×
  94. 94MumbaiMaharashtra, India
    791.6×
  95. 95LorcaMurcia, Spain
    781.6×
  96. 95QuinteroValparaiso, Chile
    781.6×
  97. 95LafayetteLouisiana, United States
    781.6×
  98. 98CoquimboCoquimbo Region, Chile
    781.6×
  99. 99MilduraVictoria, Australia
    781.6×
  100. 100ManamaManama, Bahrain
    771.5×
  101. 100Şabāḩ as SālimMubārak al Kabīr, Kuwait
    771.5×
  102. 102PoriSatakunta, Finland
    771.5×
  103. 102TocopillaAntofagasta, Chile
    771.5×
  104. 104Baton RougeLouisiana, United States
    761.5×
  105. 105Viña del MarValparaiso, Chile
    761.5×
  106. 105CopiapóAtacama, Chile
    761.5×
  107. 105BakersfieldCalifornia, United States
    761.5×
  108. 108Jacobo HunterArequipa, Peru
    751.5×
  109. 109La SerenaCoquimbo Region, Chile
    751.5×
  110. 110JaénAndalusia, Spain
    751.5×
  111. 110IrapuatoGuanajuato, Mexico
    751.5×
  112. 110ShreveportLouisiana, United States
    751.5×
  113. 113ConcónValparaiso, Chile
    741.4×
  114. 114KanchanaburiKanchanaburi, Thailand
    731.4×
  115. 115SarajevoFederation of B&H, Bosnia and Herzegovina
    721.4×
  116. 115San Miguel de AllendeGuanajuato, Mexico
    721.4×
  117. 117SalamancaGuanajuato, Mexico
    721.4×
  118. 118NanNan, Thailand
    721.4×
  119. 118AntofagastaAntofagasta, Chile
    721.4×
  120. 120SaijōEhime, Japan
    721.3×
  121. 120WangarattaVictoria, Australia
    721.3×
  122. 122AshgabatAshgabat, Turkmenistan
    711.3×
  123. 122AricaArica y Parinacota Region, Chile
    711.3×
  124. 124PhuketPhuket, Thailand
    701.3×
  125. 125VilniusVilnius, Lithuania
    691.3×
  126. 126MurciaMurcia, Spain
    691.3×
  127. 127YeojuGyeonggi-do, South Korea
    691.2×
  128. 127KasaokaOkayama, Japan
    691.2×
  129. 129TimaruCanterbury, New Zealand
    691.2×
  130. 129GranadaAndalusia, Spain
    691.2×
  131. 131PalmaBalearic Islands, Spain
    691.2×
  132. 131HigashimatsushimaMiyagi, Japan
    691.2×
  133. 133AlessandriaPiedmont, Italy
    681.2×
  134. 134Lak SiBangkok, Thailand
    681.2×
  135. 135NiihamaEhime, Japan
    671.2×
  136. 135Molina de SeguraMurcia, Spain
    671.2×
  137. 135Barrio de PeralMurcia, Spain
    671.2×
  138. 138MatsushimaMiyagi, Japan
    671.2×
  139. 138ShikokuchūōEhime, Japan
    671.2×
  140. 140SatunSatun, Thailand
    661.2×
  141. 140IksanJeollabuk-do, South Korea
    661.2×
  142. 142AbasoloGuanajuato, Mexico
    661.2×
  143. 143KalasinKalasin, Thailand
    661.1×
  144. 144MyyrmäkiUusimaa, Finland
    661.1×
  145. 144Wan ChaiWan Chai, Hong Kong
    661.1×
  146. 144AshburtonCanterbury, New Zealand
    661.1×
  147. 147GyōdaSaitama, Japan
    661.1×
  148. 148Bang NaBangkok, Thailand
    651.1×
  149. 148San IsidroCanary Islands, Spain
    651.1×
  150. 148SzczecinWest Pomerania, Poland
    651.1×
  151. 151CartagenaMurcia, Spain
    651.1×
  152. 152Alto HospicioTarapacá, Chile
    651.1×
  153. 153Hat YaiSongkhla, Thailand
    651.1×
  154. 154MaputoMaputo City, Mozambique
    641.1×
  155. 154KimjeJeollabuk-do, South Korea
    641.1×
  156. 154BailénAndalusia, Spain
    641.1×
  157. 154AlbaceteCastille-La Mancha, Spain
    641.1×
  158. 154SaguenayQuebec, Canada
    641.1×
  159. 159PrešovPrešov Region, Slovakia
    641.1×
  160. 159ChikuseiIbaraki, Japan
    641.1×
  161. 159Khlong Sam WaBangkok, Thailand
    641.1×
  162. 162Tagajō-shiMiyagi, Japan
    641.1×
  163. 163HattiesburgMississippi, United States
    641.1×
  164. 164JeddahMecca Region, Saudi Arabia
    631.1×
  165. 164GunsanJeollabuk-do, South Korea
    631.1×
  166. 164Accralow-cost sensorsGreater Accra, Ghana
    631.1×
  167. 167SeonghwanChungcheongnam-do, South Korea
    631.0×
  168. 167MenumaSaitama, Japan
    631.0×
  169. 167KennerLouisiana, United States
    631.0×
  170. 170ZemunCentral Serbia, Serbia
    631.0×
  171. 170SangjuGyeongsangbuk-do, South Korea
    631.0×
  172. 170ChimboteAncash, Peru
    631.0×
  173. 173Nakhon RatchasimaNakhon Ratchasima, Thailand
    631.0×
  174. 173TakasakiGunma, Japan
    631.0×
  175. 173YoshiokaMiyagi, Japan
    631.0×
  176. 176CártamaAndalusia, Spain
    631.0×
  177. 177KristiansandAgder, Norway
    631.0×
  178. 178TallinnHarjumaa, Estonia
    621.0×
  179. 178HumennéPrešov Region, Slovakia
    621.0×
  180. 180AugustówPodlasie, Poland
    621.0×
  181. 180GuangzhouGuangdong, China
    621.0×
  182. 182HelsinkiUusimaa, Finland
    621.0×
  183. 182WanjuJeollabuk-do, South Korea
    621.0×
  184. 184KaunasKaunas, Lithuania
    621.0×
  185. 184YoriiSaitama, Japan
    621.0×
  186. 184KumagayaSaitama, Japan
    621.0×
  187. 184KomárnoNitra Region, Slovakia
    621.0×
  188. 184CalamaAntofagasta, Chile
    621.0×
  189. 184ŌsakiMiyagi, Japan
    621.0×
  190. 190NamsaJeollabuk-do, South Korea
    621.0×
  191. 190KoesanNorth Chungcheong, South Korea
    621.0×
  192. 190WakuyaMiyagi, Japan
    621.0×
  193. 190Zielona GóraLubusz, Poland
    621.0×
  194. 190Gorzów WielkopolskiLubusz, Poland
    621.0×
  195. 190Little RockArkansas, United States
    621.0×
  196. 196Surat ThaniSurat Thani, Thailand
    611.0×
  197. 196YalaYala, Thailand
    611.0×
  198. 196BuanJeollabuk-do, South Korea
    611.0×
  199. 196TrnavaTrnava Region, Slovakia
    611.0×
  200. 196CuencaCastille-La Mancha, Spain
    611.0×

Top 200 of 2,291 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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, May 27, 2024, smogrank.com/history/2024-05-27 (accessed 3 Oct 2026).

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