SmogRank / History / May 30, 2023

Most polluted cities on May 30, 2023

1,285 cities ranked by their average PM2.5 over the day; the worst was Nacimiento, Chile, at 151.5 µg/m³. Each city's own local calendar day.

← Nacimiento 151.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 30, 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
    22710.1×
  2. 2HualpénBiobio, Chile
    1978.1×
  3. 3Los ÁngelesBiobio, Chile
    1867.0×
  4. 4San CarlosÑuble, Chile
    1867.0×
  5. 5Dhakalow-cost sensorsDhaka Division, Bangladesh
    1856.9×
  6. 5CuricóMaule Region, Chile
    1856.9×
  7. 7ChillánÑuble, Chile
    1846.8×
  8. 8LinaresMaule Region, Chile
    1806.5×
  9. 9TemucoAraucania, Chile
    1766.1×
  10. 10TalcahuanoBiobio, Chile
    1695.5×
  11. 11Prince AlbertSaskatchewan, Canada
    1685.3×
  12. 12SantiagoSantiago Metropolitan, Chile
    1634.9×
  13. 13RengoO'Higgins Region, Chile
    1614.7×
  14. 13HualquiBiobio, Chile
    1614.7×
  15. 15CuranilahueBiobio, Chile
    1614.6×
  16. 16TalaganteSantiago Metropolitan, Chile
    1604.6×
  17. 17ToméBiobio, Chile
    1584.3×
  18. 18RancaguaO'Higgins Region, Chile
    1564.2×
  19. 19CoronelBiobio, Chile
    1564.1×
  20. 20CoyhaiqueAysén, Chile
    1544.0×
  21. 21OsornoLos Lagos Region, Chile
    1533.9×
  22. 22BaghdadBaghdad, Iraq
    1533.9×
  23. 23TalcaMaule Region, Chile
    1463.6×
  24. 24Puente AltoSantiago Metropolitan, Chile
    1413.5×
  25. 25ChiguayanteBiobio, Chile
    1403.4×
  26. 26ManamaManama, Bahrain
    1393.4×
  27. 27Puerto AysénAysén, Chile
    1373.3×
  28. 28Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1293.1×
  29. 29CauquenesMaule Region, Chile
    1293.1×
  30. 30GuangzhouGuangdong, China
    1293.1×
  31. 31KolkataWest Bengal, India
    1283.1×
  32. 32San Pedro de la PazBiobio, Chile
    1263.0×
  33. 33ConcepciónBiobio, Chile
    1263.0×
  34. 34HyderabadTelangana, India
    1212.9×
  35. 35SaskatoonSaskatchewan, Canada
    1192.9×
  36. 36ValdiviaLos Ríos Region, Chile
    1172.8×
  37. 37Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1122.7×
  38. 38QuillotaValparaiso, Chile
    1122.7×
  39. 39LotaBiobio, Chile
    1112.6×
  40. 40Lahorelow-cost sensorsPunjab, Pakistan
    1062.5×
  41. 41BeijingBeijing, China
    1052.5×
  42. 42Viña del MarValparaiso, Chile
    1022.4×
  43. 43DushanbeDushanbe, Tajikistan
    992.3×
  44. 44La UniónLos Ríos Region, Chile
    972.3×
  45. 45CelayaGuanajuato, Mexico
    972.2×
  46. 45San Salvador TizatlalliMéxico, Mexico
    972.2×
  47. 47DelhiDelhi, India
    942.1×
  48. 48IndioCalifornia, United States
    932.1×
  49. 48Campbell RiverBritish Columbia, Canada
    932.1×
  50. 50Kathmandulow-cost sensorsBagmati Province, Nepal
    932.1×
  51. 51ShenyangLiaoning, China
    932.1×
  52. 51AntofagastaAntofagasta, Chile
    932.1×
  53. 53Fort McMurrayAlberta, Canada
    922.1×
  54. 54HanoiHanoi, Vietnam
    922.1×
  55. 55QuinteroValparaiso, Chile
    912.0×
  56. 56ConcónValparaiso, Chile
    912.0×
  57. 57SalamancaGuanajuato, Mexico
    892.0×
  58. 58JeddahMecca Region, Saudi Arabia
    871.9×
  59. 58BakuBaki, Azerbaijan
    871.9×
  60. 60Puerto MonttLos Lagos Region, Chile
    851.8×
  61. 61Guatemala CityGuatemala, Guatemala
    851.8×
  62. 62RabinalBaja Verapaz, Guatemala
    851.8×
  63. 63CoquimboCoquimbo Region, Chile
    821.7×
  64. 63TexarkanaTexas, United States
    821.7×
  65. 65Addis AbabaAddis Ababa, Ethiopia
    811.7×
  66. 66PristinaPristina, Kosovo
    801.7×
  67. 67Puerto VarasLos Lagos Region, Chile
    801.6×
  68. 68RuseRuse, Bulgaria
    791.6×
  69. 69BilbaoBasque Country, Spain
    791.6×
  70. 70Islamabadlow-cost sensorsIslamabad, Pakistan
    781.6×
  71. 70NanaimoBritish Columbia, Canada
    781.6×
  72. 72CopiapóAtacama, Chile
    781.6×
  73. 73ChennaiTamil Nadu, India
    771.6×
  74. 74Laudio / LlodioBasque Country, Spain
    771.5×
  75. 75DurangoBasque Country, Spain
    761.5×
  76. 76GijónAsturias, Spain
    751.5×
  77. 76Silao de la VictoriaGuanajuato, Mexico
    751.5×
  78. 76HarewoodBritish Columbia, Canada
    751.5×
  79. 79SalorTashkent Region, Uzbekistan
    751.5×
  80. 80Alto HospicioTarapacá, Chile
    751.5×
  81. 81BrawleyCalifornia, United States
    741.4×
  82. 82La SerenaCoquimbo Region, Chile
    731.4×
  83. 83KigaliKigali, Rwanda
    731.4×
  84. 83Nong KhaemBangkok, Thailand
    731.4×
  85. 83CourtenayBritish Columbia, Canada
    731.4×
  86. 86Ecatepec de MorelosMéxico, Mexico
    721.4×
  87. 87HamiltonOntario, Canada
    721.4×
  88. 88A CoruñaGalicia, Spain
    721.4×
  89. 89ColomboWestern Province, Sri Lanka
    721.3×
  90. 90BermeoBasque Country, Spain
    711.3×
  91. 91Rose HillVirginia, United States
    711.3×
  92. 92BelmopanCayo District, Belize
    711.3×
  93. 93Samut SakhonSamut Sakhon, Thailand
    711.3×
  94. 94ConakryConakry, Guinea
    701.3×
  95. 95Gasteiz / VitoriaBasque Country, Spain
    701.3×
  96. 95OviedoAsturias, Spain
    701.3×
  97. 95SpringfieldVirginia, United States
    701.3×
  98. 98Frýdek-MístekMoravian-Silesian Region, Czechia
    701.3×
  99. 98SpringdaleArkansas, United States
    701.3×
  100. 98ChesapeakeVirginia, United States
    701.3×
  101. 101Bang Bo DistrictSamut Prakan, Thailand
    701.3×
  102. 102TocopillaAntofagasta, Chile
    691.3×
  103. 102BridgeportConnecticut, United States
    691.3×
  104. 104BangkokBangkok, Thailand
    691.3×
  105. 105Little RockArkansas, United States
    691.2×
  106. 105East HamptonVirginia, United States
    691.2×
  107. 107San Luis de la PazGuanajuato, Mexico
    691.2×
  108. 108NarónGalicia, Spain
    691.2×
  109. 108Mexico CityMexico City, Mexico
    691.2×
  110. 110Lagoslow-cost sensorsLagos, Nigeria
    681.2×
  111. 110Ciudad JuárezChihuahua, Mexico
    681.2×
  112. 110St. LouisMissouri, United States
    681.2×
  113. 113Lincoln ParkMichigan, United States
    681.2×
  114. 114MartinŽilina Region, Slovakia
    671.2×
  115. 114GulfportMississippi, United States
    671.2×
  116. 114DanburyConnecticut, United States
    671.2×
  117. 117Phra PradaengSamut Prakan, Thailand
    671.2×
  118. 117Khlong LuangPathum Thani, Thailand
    671.2×
  119. 117ChesterPennsylvania, United States
    671.2×
  120. 120HumennéPrešov Region, Slovakia
    671.2×
  121. 121HavířovMoravian-Silesian Region, Czechia
    671.2×
  122. 121EriePennsylvania, United States
    671.2×
  123. 123AntananarivoAnalamanga, Madagascar
    661.2×
  124. 123BensalemPennsylvania, United States
    661.2×
  125. 125ElizabethNew Jersey, United States
    661.1×
  126. 126TrnavaTrnava Region, Slovakia
    661.1×
  127. 126CalamaAntofagasta, Chile
    661.1×
  128. 128HattiesburgMississippi, United States
    661.1×
  129. 128WorcesterMassachusetts, United States
    661.1×
  130. 130Český TěšínMoravian-Silesian Region, Czechia
    661.1×
  131. 130Donostia / San SebastiánBasque Country, Spain
    661.1×
  132. 130PhiladelphiaPennsylvania, United States
    661.1×
  133. 133PrešovPrešov Region, Slovakia
    651.1×
  134. 133Bang KapiBangkok, Thailand
    651.1×
  135. 133TřinecMoravian-Silesian Region, Czechia
    651.1×
  136. 133AricaArica y Parinacota Region, Chile
    651.1×
  137. 137KošiceKošice Region, Slovakia
    651.1×
  138. 137MostaIl-Mosta, Malta
    651.1×
  139. 137BearDelaware, United States
    651.1×
  140. 137HammondIndiana, United States
    651.1×
  141. 141ShreveportLouisiana, United States
    651.1×
  142. 142Spišská Nová VesKošice Region, Slovakia
    651.1×
  143. 142PennsaukenNew Jersey, United States
    651.1×
  144. 142YoungstownOhio, United States
    651.1×
  145. 145FerrolGalicia, Spain
    641.1×
  146. 145DoverDelaware, United States
    641.1×
  147. 145RedfordMichigan, United States
    641.1×
  148. 145HobbsNew Mexico, United States
    641.1×
  149. 149AvilésAsturias, Spain
    641.1×
  150. 150NitraNitra Region, Slovakia
    641.1×
  151. 150ScaggsvilleMaryland, United States
    641.1×
  152. 152ŽilinaŽilina Region, Slovakia
    631.1×
  153. 152ElktonMaryland, United States
    631.1×
  154. 154WilmingtonDelaware, United States
    631.0×
  155. 154Calumet CityIllinois, United States
    631.0×
  156. 156Fort SmithArkansas, United States
    631.0×
  157. 156WarrenOhio, United States
    631.0×
  158. 156ParadiseCalifornia, United States
    631.0×
  159. 159WashingtonDistrict of Columbia, United States
    631.0×
  160. 159West MifflinPennsylvania, United States
    631.0×
  161. 161Samut PrakanSamut Prakan, Thailand
    631.0×
  162. 161Saint-BrieucBrittany, France
    631.0×
  163. 161PortageIndiana, United States
    631.0×
  164. 161AltoonaPennsylvania, United States
    631.0×
  165. 161MilwaukeeWisconsin, United States
    631.0×
  166. 161CalgaryAlberta, Canada
    631.0×
  167. 167JohnstownPennsylvania, United States
    621.0×
  168. 168AthensAttica, Greece
    621.0×
  169. 168Vranov nad TopľouPrešov Region, Slovakia
    621.0×
  170. 168JacksonMississippi, United States
    621.0×
  171. 168GaryIndiana, United States
    621.0×
  172. 172SliemaTas-Sliema, Malta
    621.0×
  173. 172AlessandriaPiedmont, Italy
    621.0×
  174. 174BohumínMoravian-Silesian Region, Czechia
    621.0×
  175. 174IrapuatoGuanajuato, Mexico
    621.0×
  176. 174Kansas CityKansas, United States
    621.0×
  177. 174Greater SudburyOntario, Canada
    621.0×
  178. 178AshgabatAshgabat, Turkmenistan
    621.0×
  179. 178AnnecyAuvergne-Rhône-Alpes, France
    621.0×
  180. 178SenicaTrnava Region, Slovakia
    621.0×
  181. 178OstravaMoravian-Silesian Region, Czechia
    621.0×
  182. 178VigoGalicia, Spain
    621.0×
  183. 178HernandoMississippi, United States
    621.0×
  184. 184Neu-UlmBavaria, Germany
    611.0×
  185. 184HandlováTrenčín Region, Slovakia
    611.0×
  186. 184West MemphisArkansas, United States
    611.0×
  187. 184IndianapolisIndiana, United States
    611.0×
  188. 184Oak LawnIllinois, United States
    611.0×
  189. 184FlintMichigan, United States
    611.0×
  190. 190PascagoulaMississippi, United States
    611.0×
  191. 191SninaPrešov Region, Slovakia
    611.0×
  192. 192Ponte Vedra BeachFlorida, United States
    611.0×
  193. 192AnkenyIowa, United States
    611.0×
  194. 192DetroitMichigan, United States
    611.0×
  195. 192KalamazooMichigan, United States
    611.0×
  196. 196YangonYangon, Myanmar
    610.9×
  197. 196SamaAsturias, Spain
    610.9×
  198. 196BogotáBogota D.C., Colombia
    610.9×
  199. 196ClevelandOhio, United States
    610.9×
  200. 196PittsburghPennsylvania, United States
    610.9×

Top 200 of 1,285 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 30, 2023, smogrank.com/history/2023-05-30 (accessed 2 Oct 2026).

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