SmogRank / History / May 29, 2023

Most polluted cities on May 29, 2023

1,295 cities ranked by their average PM2.5 over the day; the worst was Nacimiento, Chile, at 132.0 µg/m³. Each city's own local calendar day.

← Nacimiento 132.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 29, 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. 1NacimientoBiobio, Chile
    2078.8×
  2. 2Los ÁngelesBiobio, Chile
    1978.1×
  3. 3TemucoAraucania, Chile
    1917.5×
  4. 4CoyhaiqueAysén, Chile
    1826.6×
  5. 5San CarlosÑuble, Chile
    1796.4×
  6. 6Dhakalow-cost sensorsDhaka Division, Bangladesh
    1796.4×
  7. 7ChillánÑuble, Chile
    1776.2×
  8. 8OsornoLos Lagos Region, Chile
    1735.8×
  9. 9LinaresMaule Region, Chile
    1735.8×
  10. 10Puerto AysénAysén, Chile
    1665.2×
  11. 11HualpénBiobio, Chile
    1645.0×
  12. 12Puerto MonttLos Lagos Region, Chile
    1624.8×
  13. 13CoronelBiobio, Chile
    1594.4×
  14. 14SantiagoSantiago Metropolitan, Chile
    1584.4×
  15. 15ToméBiobio, Chile
    1584.4×
  16. 16HualquiBiobio, Chile
    1574.3×
  17. 17CuricóMaule Region, Chile
    1574.2×
  18. 18CuranilahueBiobio, Chile
    1564.1×
  19. 19La UniónLos Ríos Region, Chile
    1554.1×
  20. 20Puente AltoSantiago Metropolitan, Chile
    1554.1×
  21. 21Puerto VarasLos Lagos Region, Chile
    1554.0×
  22. 22RancaguaO'Higgins Region, Chile
    1523.8×
  23. 23TalaganteSantiago Metropolitan, Chile
    1523.8×
  24. 24BaghdadBaghdad, Iraq
    1503.7×
  25. 25TalcaMaule Region, Chile
    1473.6×
  26. 26CauquenesMaule Region, Chile
    1463.6×
  27. 27KolkataWest Bengal, India
    1453.6×
  28. 28HyderabadTelangana, India
    1443.5×
  29. 29RengoO'Higgins Region, Chile
    1443.5×
  30. 30BeijingBeijing, China
    1283.1×
  31. 31TalcahuanoBiobio, Chile
    1263.0×
  32. 32Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1253.0×
  33. 32ConcepciónBiobio, Chile
    1253.0×
  34. 34Lahorelow-cost sensorsPunjab, Pakistan
    1122.7×
  35. 35QuillotaValparaiso, Chile
    1082.5×
  36. 35ChiguayanteBiobio, Chile
    1082.5×
  37. 37CelayaGuanajuato, Mexico
    1052.5×
  38. 38GuangzhouGuangdong, China
    1012.4×
  39. 39ZapopanJalisco, Mexico
    992.3×
  40. 40DushanbeDushanbe, Tajikistan
    992.3×
  41. 41Islamabadlow-cost sensorsIslamabad, Pakistan
    962.2×
  42. 42San Pedro de la PazBiobio, Chile
    952.2×
  43. 43MinatitlánVeracruz, Mexico
    952.2×
  44. 44GuadalajaraJalisco, Mexico
    932.1×
  45. 45QuinteroValparaiso, Chile
    922.1×
  46. 46BelmopanCayo District, Belize
    912.0×
  47. 47Şabāḩ as SālimMubārak al Kabīr, Kuwait
    912.0×
  48. 48KigaliKigali, Rwanda
    912.0×
  49. 48HanoiHanoi, Vietnam
    912.0×
  50. 50Viña del MarValparaiso, Chile
    902.0×
  51. 51Kampalalow-cost sensorsCentral Region, Uganda
    902.0×
  52. 52DelhiDelhi, India
    881.9×
  53. 52LotaBiobio, Chile
    881.9×
  54. 54ConcónValparaiso, Chile
    881.9×
  55. 55San Andrés TuxtlaVeracruz, Mexico
    871.9×
  56. 56AntofagastaAntofagasta, Chile
    861.9×
  57. 57Kathmandulow-cost sensorsBagmati Province, Nepal
    851.8×
  58. 57ValdiviaLos Ríos Region, Chile
    851.8×
  59. 57San Salvador TizatlalliMéxico, Mexico
    851.8×
  60. 60SalamancaGuanajuato, Mexico
    851.8×
  61. 61BakuBaki, Azerbaijan
    831.8×
  62. 62CopiapóAtacama, Chile
    821.7×
  63. 63TexarkanaTexas, United States
    801.6×
  64. 64DurangoBasque Country, Spain
    791.6×
  65. 65San Mateo AtencoMéxico, Mexico
    781.6×
  66. 65Hacienda Santa FeJalisco, Mexico
    781.6×
  67. 67ChennaiTamil Nadu, India
    781.6×
  68. 68PesaroThe Marches, Italy
    781.6×
  69. 69RuseRuse, Bulgaria
    771.6×
  70. 69PristinaPristina, Kosovo
    771.6×
  71. 69CoquimboCoquimbo Region, Chile
    771.6×
  72. 72TolucaMéxico, Mexico
    771.5×
  73. 73Bang Bo DistrictSamut Prakan, Thailand
    771.5×
  74. 74Laudio / LlodioBasque Country, Spain
    761.5×
  75. 75BilbaoBasque Country, Spain
    751.5×
  76. 76Nong KhaemBangkok, Thailand
    751.5×
  77. 76RabinalBaja Verapaz, Guatemala
    751.5×
  78. 78Guatemala CityGuatemala, Guatemala
    751.5×
  79. 79Prince AlbertSaskatchewan, Canada
    751.5×
  80. 80Silao de la VictoriaGuanajuato, Mexico
    741.4×
  81. 81TocopillaAntofagasta, Chile
    741.4×
  82. 81La SerenaCoquimbo Region, Chile
    741.4×
  83. 83BangkokBangkok, Thailand
    741.4×
  84. 84GuanajuatoGuanajuato, Mexico
    731.4×
  85. 85Khlong LuangPathum Thani, Thailand
    721.4×
  86. 86JeddahMecca Region, Saudi Arabia
    711.3×
  87. 87ShenyangLiaoning, China
    711.3×
  88. 88Samut SakhonSamut Sakhon, Thailand
    701.3×
  89. 89Bang KapiBangkok, Thailand
    701.3×
  90. 89Little RockArkansas, United States
    701.3×
  91. 91AbasoloGuanajuato, Mexico
    701.3×
  92. 92SalorTashkent Region, Uzbekistan
    701.3×
  93. 93JacksonMississippi, United States
    691.3×
  94. 94Addis AbabaAddis Ababa, Ethiopia
    691.3×
  95. 94ConakryConakry, Guinea
    691.3×
  96. 96TurinPiedmont, Italy
    691.3×
  97. 96CalamaAntofagasta, Chile
    691.3×
  98. 98YangonYangon, Myanmar
    691.2×
  99. 98CuernavacaMorelos, Mexico
    691.2×
  100. 98Alto HospicioTarapacá, Chile
    691.2×
  101. 101GijónAsturias, Spain
    681.2×
  102. 101AricaArica y Parinacota Region, Chile
    681.2×
  103. 103Gasteiz / VitoriaBasque Country, Spain
    671.2×
  104. 104KalamazooMichigan, United States
    671.2×
  105. 105PrešovPrešov Region, Slovakia
    671.2×
  106. 105Karachilow-cost sensorsSindh, Pakistan
    671.2×
  107. 105Phra PradaengSamut Prakan, Thailand
    671.2×
  108. 105TrnavaTrnava Region, Slovakia
    671.2×
  109. 105BermeoBasque Country, Spain
    671.2×
  110. 110ColomboWestern Province, Sri Lanka
    671.2×
  111. 111HattiesburgMississippi, United States
    661.2×
  112. 112SpringdaleArkansas, United States
    661.2×
  113. 113SliemaTas-Sliema, Malta
    661.1×
  114. 113MostaIl-Mosta, Malta
    661.1×
  115. 113Ecatepec de MorelosMéxico, Mexico
    661.1×
  116. 116ElizabethNew Jersey, United States
    661.1×
  117. 117AntananarivoAnalamanga, Madagascar
    661.1×
  118. 117ConroeTexas, United States
    661.1×
  119. 119Saint-BrieucBrittany, France
    651.1×
  120. 119BuffaloNew York, United States
    651.1×
  121. 121Český TěšínMoravian-Silesian Region, Czechia
    651.1×
  122. 122AmmanAmman, Jordan
    651.1×
  123. 122OviedoAsturias, Spain
    651.1×
  124. 122San Luis de la PazGuanajuato, Mexico
    651.1×
  125. 122KenmoreNew York, United States
    651.1×
  126. 126DaxNew Aquitaine, France
    651.1×
  127. 126WarrenOhio, United States
    651.1×
  128. 128ShreveportLouisiana, United States
    641.1×
  129. 129HumennéPrešov Region, Slovakia
    641.1×
  130. 129FlintMichigan, United States
    641.1×
  131. 129CheektowagaNew York, United States
    641.1×
  132. 129HobbsNew Mexico, United States
    641.1×
  133. 133Mexico CityMexico City, Mexico
    641.1×
  134. 134Donostia / San SebastiánBasque Country, Spain
    641.1×
  135. 134Ciudad JuárezChihuahua, Mexico
    641.1×
  136. 134LancasterPennsylvania, United States
    641.1×
  137. 137AshgabatAshgabat, Turkmenistan
    631.1×
  138. 138VigoGalicia, Spain
    631.0×
  139. 138Tepeji del Río de OcampoHidalgo, Mexico
    631.0×
  140. 140Lincoln ParkMichigan, United States
    631.0×
  141. 141HavířovMoravian-Silesian Region, Czechia
    631.0×
  142. 142Mueang NonthaburiNonthaburi, Thailand
    631.0×
  143. 142PueblaPuebla, Mexico
    631.0×
  144. 142San Miguel de AllendeGuanajuato, Mexico
    631.0×
  145. 142BridgeportConnecticut, United States
    631.0×
  146. 142EdmontonAlberta, Canada
    631.0×
  147. 147NarónGalicia, Spain
    631.0×
  148. 147Fort WorthTexas, United States
    631.0×
  149. 149GulfportMississippi, United States
    621.0×
  150. 150CorsicanaTexas, United States
    621.0×
  151. 150ElkhartIndiana, United States
    621.0×
  152. 150RedfordMichigan, United States
    621.0×
  153. 150YpsilantiMichigan, United States
    621.0×
  154. 154SenicaTrnava Region, Slovakia
    621.0×
  155. 154MooreOklahoma, United States
    621.0×
  156. 156Samut PrakanSamut Prakan, Thailand
    621.0×
  157. 156VannesBrittany, France
    621.0×
  158. 156MostÚstí nad Labem Region, Czechia
    621.0×
  159. 159Ferry PassFlorida, United States
    621.0×
  160. 159SaginawTexas, United States
    621.0×
  161. 161NitraNitra Region, Slovakia
    611.0×
  162. 161Frýdek-MístekMoravian-Silesian Region, Czechia
    611.0×
  163. 161YorkPennsylvania, United States
    611.0×
  164. 161JenisonMichigan, United States
    611.0×
  165. 161BensalemPennsylvania, United States
    611.0×
  166. 166A CoruñaGalicia, Spain
    611.0×
  167. 166JesiThe Marches, Italy
    611.0×
  168. 168KošiceKošice Region, Slovakia
    611.0×
  169. 169ValdostaGeorgia, United States
    611.0×
  170. 169St. LouisMissouri, United States
    611.0×
  171. 169EdmondOklahoma, United States
    611.0×
  172. 172Kempten (Allgäu)Bavaria, Germany
    611.0×
  173. 172PalenciaCastille and León, Spain
    611.0×
  174. 174les EscaldesEscaldes-Engordany, Andorra
    610.9×
  175. 175Spišská Nová VesKošice Region, Slovakia
    600.9×
  176. 175AnnecyAuvergne-Rhône-Alpes, France
    600.9×
  177. 175AnconaThe Marches, Italy
    600.9×
  178. 178MartinŽilina Region, Slovakia
    600.9×
  179. 178Granite CityIllinois, United States
    600.9×
  180. 180SokolovCarlsbad Region, Czechia
    600.9×
  181. 180AvilésAsturias, Spain
    600.9×
  182. 180Ponca CityOklahoma, United States
    600.9×
  183. 183AthensAttica, Greece
    600.9×
  184. 183ThionvilleGrand Est, France
    600.9×
  185. 183AlessandriaPiedmont, Italy
    600.9×
  186. 183JenksOklahoma, United States
    600.9×
  187. 183HammondIndiana, United States
    600.9×
  188. 188PerpignanOccitanie, France
    600.9×
  189. 188LemayMissouri, United States
    600.9×
  190. 188McAlesterOklahoma, United States
    600.9×
  191. 188ParadiseCalifornia, United States
    600.9×
  192. 192RužomberokŽilina Region, Slovakia
    590.9×
  193. 192TřinecMoravian-Silesian Region, Czechia
    590.9×
  194. 192Fort McMurrayAlberta, Canada
    590.9×
  195. 195Valašské MeziříčíZlín, Czechia
    590.9×
  196. 195LivornoTuscany, Italy
    590.9×
  197. 195San JoséSan José, Costa Rica
    590.9×
  198. 198SninaPrešov Region, Slovakia
    590.9×
  199. 198GraysEngland, United Kingdom
    590.9×
  200. 198BrestBrittany, France
    590.9×

Top 200 of 1,295 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 29, 2023, smogrank.com/history/2023-05-29 (accessed 2 Oct 2026).

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