SmogRank / History / May 28, 2024

Most polluted cities on May 28, 2024

2,294 cities ranked by their average PM2.5 over the day; the worst was Osorno, Chile, at 151.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 28, 2024. All episodes.

← Osorno 151.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 28, 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
    22710.1×
  2. 2HualpénBiobio, Chile
    2239.9×
  3. 3San CarlosÑuble, Chile
    2219.7×
  4. 4NacimientoBiobio, Chile
    2078.8×
  5. 5Los ÁngelesBiobio, Chile
    2058.7×
  6. 6ChillánÑuble, Chile
    1998.3×
  7. 7CoyhaiqueAysén, Chile
    1978.1×
  8. 8VillarricaAraucania, Chile
    1937.7×
  9. 9Santa Anita - Los FicusLima region, Peru
    1907.4×
  10. 10CuranilahueBiobio, Chile
    1867.0×
  11. 11ValdiviaLos Ríos Region, Chile
    1856.9×
  12. 12N'DjamenaN’Djaména, Chad
    1826.6×
  13. 13TalcahuanoBiobio, Chile
    1816.5×
  14. 14CoronelBiobio, Chile
    1796.3×
  15. 15TemucoAraucania, Chile
    1725.7×
  16. 16HualquiBiobio, Chile
    1705.5×
  17. 17DelhiDelhi, India
    1705.5×
  18. 18ToméBiobio, Chile
    1665.2×
  19. 19La UniónLos Ríos Region, Chile
    1634.8×
  20. 20CauquenesMaule Region, Chile
    1614.6×
  21. 21Puerto AysénAysén, Chile
    1604.6×
  22. 22RancaguaO'Higgins Region, Chile
    1584.3×
  23. 23CuricóMaule Region, Chile
    1564.2×
  24. 24TalcaMaule Region, Chile
    1564.2×
  25. 24ConcepciónBiobio, Chile
    1564.2×
  26. 26TalaganteSantiago Metropolitan, Chile
    1554.1×
  27. 27RabinalBaja Verapaz, Guatemala
    1533.9×
  28. 28Dhakalow-cost sensorsDhaka Division, Bangladesh
    1533.9×
  29. 29RengoO'Higgins Region, Chile
    1533.8×
  30. 30San Pedro de la PazBiobio, Chile
    1513.7×
  31. 31SantiagoSantiago Metropolitan, Chile
    1513.7×
  32. 32Guatemala CityGuatemala, Guatemala
    1483.6×
  33. 33BaghdadBaghdad, Iraq
    1483.6×
  34. 34Lahorelow-cost sensorsPunjab, Pakistan
    1443.5×
  35. 35JakartaJakarta, Indonesia
    1373.4×
  36. 36AshgabatAshgabat, Turkmenistan
    1353.3×
  37. 37ChiguayanteBiobio, Chile
    1343.3×
  38. 38Puente AltoSantiago Metropolitan, Chile
    1303.2×
  39. 39QuillotaValparaiso, Chile
    1243.0×
  40. 40QuilpuéValparaiso, Chile
    1212.9×
  41. 41PueblaPuebla, Mexico
    1212.9×
  42. 42San Francisco De BorjaLima region, Peru
    1202.9×
  43. 43BeijingBeijing, China
    1202.9×
  44. 44San Luis de la PazGuanajuato, Mexico
    1142.7×
  45. 45BakuBaki, Azerbaijan
    1142.7×
  46. 46HanoiHanoi, Vietnam
    1122.7×
  47. 47YoshiokaMiyagi, Japan
    1112.6×
  48. 48MissionTexas, United States
    1112.6×
  49. 49Addis AbabaAddis Ababa, Ethiopia
    1082.5×
  50. 50Islamabadlow-cost sensorsIslamabad, Pakistan
    1072.5×
  51. 51IrapuatoGuanajuato, Mexico
    1062.5×
  52. 52CairoCairo, Egypt
    1002.3×
  53. 53Zacatepec de HidalgoMorelos, Mexico
    992.3×
  54. 54San Miguel de AllendeGuanajuato, Mexico
    992.3×
  55. 55Puerto VarasLos Lagos Region, Chile
    982.3×
  56. 56Puerto MonttLos Lagos Region, Chile
    982.3×
  57. 57Karachilow-cost sensorsSindh, Pakistan
    972.3×
  58. 58San Andrés TuxtlaVeracruz, Mexico
    972.3×
  59. 59HyderabadTelangana, India
    962.2×
  60. 60CelayaGuanajuato, Mexico
    942.2×
  61. 61QuinteroValparaiso, Chile
    942.1×
  62. 62Kathmandulow-cost sensorsBagmati Province, Nepal
    932.1×
  63. 63MaputoMaputo City, Mozambique
    932.1×
  64. 64KolkataWest Bengal, India
    922.1×
  65. 65EdinburgTexas, United States
    902.0×
  66. 66Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    902.0×
  67. 67ConcónValparaiso, Chile
    892.0×
  68. 68MukdahanMukdahan, Thailand
    881.9×
  69. 69BelmopanCayo District, Belize
    881.9×
  70. 69Santiago de QuerétaroQuerétaro, Mexico
    881.9×
  71. 71La SerenaCoquimbo Region, Chile
    881.9×
  72. 72Heroica MatamorosTamaulipas, Mexico
    881.9×
  73. 73Live OakTexas, United States
    871.9×
  74. 74Şabāḩ as SālimMubārak al Kabīr, Kuwait
    871.9×
  75. 74Abujalow-cost sensorsFCT, Nigeria
    871.9×
  76. 74TocopillaAntofagasta, Chile
    871.9×
  77. 77LimaLima Province, Peru
    861.9×
  78. 77RangioraCanterbury, New Zealand
    861.9×
  79. 79Viña del MarValparaiso, Chile
    851.8×
  80. 80GuanajuatoGuanajuato, Mexico
    851.8×
  81. 81Eagle PassTexas, United States
    851.8×
  82. 82León de los AldamaGuanajuato, Mexico
    841.8×
  83. 83CoquimboCoquimbo Region, Chile
    831.7×
  84. 84Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    821.7×
  85. 85Corpus ChristiTexas, United States
    821.7×
  86. 86CallaoCallao, Peru
    821.7×
  87. 87Silao de la VictoriaGuanajuato, Mexico
    821.7×
  88. 88MumbaiMaharashtra, India
    811.7×
  89. 88ConroeTexas, United States
    811.7×
  90. 90Kampalalow-cost sensorsCentral Region, Uganda
    791.6×
  91. 91AguascalientesAguascalientes, Mexico
    791.6×
  92. 92VilniusVilnius, Lithuania
    781.6×
  93. 93JeddahMecca Region, Saudi Arabia
    781.6×
  94. 93AntofagastaAntofagasta, Chile
    781.6×
  95. 95AustinTexas, United States
    771.6×
  96. 96CopiapóAtacama, Chile
    771.5×
  97. 97TimaruCanterbury, New Zealand
    771.5×
  98. 98Sydneylow-cost sensorsNew South Wales, Australia
    761.5×
  99. 99ChristchurchCanterbury, New Zealand
    761.5×
  100. 100SarajevoFederation of B&H, Bosnia and Herzegovina
    751.5×
  101. 101AntananarivoAnalamanga, Madagascar
    751.5×
  102. 101Jacobo HunterArequipa, Peru
    751.5×
  103. 103ChimboteAncash, Peru
    751.5×
  104. 104WangarattaVictoria, Australia
    751.5×
  105. 105OdessaTexas, United States
    741.4×
  106. 105AshburtonCanterbury, New Zealand
    741.4×
  107. 107AricaArica y Parinacota Region, Chile
    731.4×
  108. 108College StationTexas, United States
    731.4×
  109. 109San AntonioTexas, United States
    721.4×
  110. 110KanchanaburiKanchanaburi, Thailand
    711.3×
  111. 110Alto HospicioTarapacá, Chile
    711.3×
  112. 112NanNan, Thailand
    711.3×
  113. 112TaylorTexas, United States
    711.3×
  114. 114Missouri CityTexas, United States
    701.3×
  115. 115ShanghaiShanghai, China
    701.3×
  116. 115Saphan SungBangkok, Thailand
    701.3×
  117. 117FontanaCalifornia, United States
    691.3×
  118. 118HoustonTexas, United States
    691.3×
  119. 119PasadenaTexas, United States
    691.2×
  120. 119San MarcosTexas, United States
    691.2×
  121. 121Khlong Sam WaBangkok, Thailand
    691.2×
  122. 122Villa Poeta José Gálvez BarrenecheaLima region, Peru
    681.2×
  123. 123La Línea de la ConcepciónAndalusia, Spain
    681.2×
  124. 124Nong KhaemBangkok, Thailand
    681.2×
  125. 125Ban Samae DamBangkok, Thailand
    671.2×
  126. 126Los AngelesCalifornia, United States
    661.1×
  127. 126HobbsNew Mexico, United States
    661.1×
  128. 128Accralow-cost sensorsGreater Accra, Ghana
    661.1×
  129. 129VentspilsVentspils, Latvia
    661.1×
  130. 129PhuketPhuket, Thailand
    661.1×
  131. 131Amnat CharoenAmnat Charoen, Thailand
    661.1×
  132. 131Wan ChaiWan Chai, Hong Kong
    661.1×
  133. 131KennewickWashington, United States
    661.1×
  134. 134DushanbeDushanbe, Tajikistan
    651.1×
  135. 134Nakhon RatchasimaNakhon Ratchasima, Thailand
    651.1×
  136. 136Bang NaBangkok, Thailand
    651.1×
  137. 136MilduraVictoria, Australia
    651.1×
  138. 138KalasinKalasin, Thailand
    651.1×
  139. 139PattaniPattani, Thailand
    651.1×
  140. 139NarathiwatNarathiwat, Thailand
    651.1×
  141. 139PesaroThe Marches, Italy
    651.1×
  142. 139Falconara MarittimaThe Marches, Italy
    651.1×
  143. 143SaginawTexas, United States
    651.1×
  144. 144San RoqueAndalusia, Spain
    641.1×
  145. 144OcalaFlorida, United States
    641.1×
  146. 146MyyrmäkiUusimaa, Finland
    641.1×
  147. 146CalamaAntofagasta, Chile
    641.1×
  148. 146Santa ClaritaCalifornia, United States
    641.1×
  149. 149RigaRiga, Latvia
    641.1×
  150. 149SevillaAndalusia, Spain
    641.1×
  151. 151YalaYala, Thailand
    641.1×
  152. 152UmeåVästerbotten, Sweden
    631.1×
  153. 152Hat YaiSongkhla, Thailand
    631.1×
  154. 154MurciaMurcia, Spain
    631.0×
  155. 154Asunciónlow-cost sensorsAsuncion, Paraguay
    631.0×
  156. 154Jurupa ValleyCalifornia, United States
    631.0×
  157. 157YoriiSaitama, Japan
    631.0×
  158. 157BurrianaValencia, Spain
    631.0×
  159. 157Zielona GóraLubusz, Poland
    631.0×
  160. 160RiversideCalifornia, United States
    631.0×
  161. 161SalamancaGuanajuato, Mexico
    631.0×
  162. 161Khan Na YaoBangkok, Thailand
    631.0×
  163. 163HelsinkiUusimaa, Finland
    621.0×
  164. 164Kodamachō-kodamaminamiSaitama, Japan
    621.0×
  165. 164Molina de SeguraMurcia, Spain
    621.0×
  166. 164GlendoraCalifornia, United States
    621.0×
  167. 164La Crescenta-Montroselow-cost sensorsCalifornia, United States
    621.0×
  168. 168PrešovPrešov Region, Slovakia
    621.0×
  169. 168ChocopeLa Libertad, Peru
    621.0×
  170. 170Ang Mo Kio New TownSingapore
    621.0×
  171. 170LubnjowBrandenburg, Germany
    621.0×
  172. 170KomárnoNitra Region, Slovakia
    621.0×
  173. 170AlessandriaPiedmont, Italy
    621.0×
  174. 170SulphurLouisiana, United States
    621.0×
  175. 175LorcaMurcia, Spain
    621.0×
  176. 175BailénAndalusia, Spain
    621.0×
  177. 175OlomoucOlomouc Region, Czechia
    621.0×
  178. 178Si Sa KetSi Sa Ket, Thailand
    611.0×
  179. 178PoznańGreater Poland, Poland
    611.0×
  180. 178Mo i RanaNordland, Norway
    611.0×
  181. 178LubbockTexas, United States
    611.0×
  182. 182SeonghwanChungcheongnam-do, South Korea
    611.0×
  183. 182SangjuGyeongsangbuk-do, South Korea
    611.0×
  184. 182TakasakiGunma, Japan
    611.0×
  185. 185Surat ThaniSurat Thani, Thailand
    611.0×
  186. 185LampangLampang, Thailand
    611.0×
  187. 185GyōdaSaitama, Japan
    611.0×
  188. 185StrausbergBrandenburg, Germany
    611.0×
  189. 185BakersfieldCalifornia, United States
    611.0×
  190. 190SatunSatun, Thailand
    611.0×
  191. 190ChichibuSaitama, Japan
    611.0×
  192. 190AnconaThe Marches, Italy
    611.0×
  193. 193LahtiPaijat-Hame, Finland
    610.9×
  194. 193MiskolcBorsod-Abaúj-Zemplén, Hungary
    610.9×
  195. 193Nakhon NayokNakhon Nayok, Thailand
    610.9×
  196. 193GalvestonTexas, United States
    610.9×
  197. 193La PorteTexas, United States
    610.9×
  198. 198TraralgonVictoria, Australia
    600.9×
  199. 199IgusaSaitama, Japan
    600.9×
  200. 199CártamaAndalusia, Spain
    600.9×

Top 200 of 2,294 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 28, 2024, smogrank.com/history/2024-05-28 (accessed 3 Oct 2026).

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