SmogRank / History / July 4, 2023

Most polluted cities on July 4, 2023

1,332 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 75.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 4, 2023. All episodes.

← Coyhaique 75.0 µg/m³ 70 µg/m³15 WHO 24-hour guideline
Every city ranked for July 4, 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. 1CoyhaiqueAysén, Chile
    1655.0×
  2. 2BayonneNew Jersey, United States
    1645.0×
  3. 3TalaganteSantiago Metropolitan, Chile
    1634.9×
  4. 4LinaresMaule Region, Chile
    1564.2×
  5. 5Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1544.0×
  6. 6RengoO'Higgins Region, Chile
    1523.8×
  7. 7RancaguaO'Higgins Region, Chile
    1523.8×
  8. 8ParklandWashington, United States
    1453.6×
  9. 9DushanbeDushanbe, Tajikistan
    1443.5×
  10. 10SantiagoSantiago Metropolitan, Chile
    1393.4×
  11. 11AnaheimCalifornia, United States
    1283.1×
  12. 12CuricóMaule Region, Chile
    1172.8×
  13. 13NairobiNairobi County, Kenya
    1152.7×
  14. 14DelhiDelhi, India
    1122.7×
  15. 15JakartaJakarta, Indonesia
    1102.6×
  16. 15PortageIndiana, United States
    1102.6×
  17. 17OsornoLos Lagos Region, Chile
    1082.6×
  18. 17GlendoraCalifornia, United States
    1082.6×
  19. 19Santa Anita - Los FicusLima region, Peru
    1052.5×
  20. 20HualpénBiobio, Chile
    1042.5×
  21. 21IndianapolisIndiana, United States
    1012.4×
  22. 22HanoiHanoi, Vietnam
    992.3×
  23. 23Grand RapidsMichigan, United States
    992.3×
  24. 24QuillotaValparaiso, Chile
    972.2×
  25. 24LansingMichigan, United States
    972.2×
  26. 26FlintMichigan, United States
    962.2×
  27. 27NacimientoBiobio, Chile
    942.1×
  28. 28ChicagoIllinois, United States
    932.1×
  29. 29HualquiBiobio, Chile
    932.1×
  30. 29East ChicagoIndiana, United States
    932.1×
  31. 31TalcaMaule Region, Chile
    932.1×
  32. 31ComptonCalifornia, United States
    932.1×
  33. 33Terre HauteIndiana, United States
    922.1×
  34. 33Los AngelesCalifornia, United States
    922.1×
  35. 35Lahorelow-cost sensorsPunjab, Pakistan
    922.1×
  36. 36CauquenesMaule Region, Chile
    922.1×
  37. 37TalcahuanoBiobio, Chile
    912.1×
  38. 38LimaLima Province, Peru
    912.0×
  39. 38GahannaOhio, United States
    912.0×
  40. 40Puente AltoSantiago Metropolitan, Chile
    912.0×
  41. 41HammondIndiana, United States
    912.0×
  42. 42Addis AbabaAddis Ababa, Ethiopia
    902.0×
  43. 42ChillánÑuble, Chile
    902.0×
  44. 44Puerto AysénAysén, Chile
    902.0×
  45. 45Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    892.0×
  46. 46Karachilow-cost sensorsSindh, Pakistan
    881.9×
  47. 47GaryIndiana, United States
    881.9×
  48. 48SarajevoFederation of B&H, Bosnia and Herzegovina
    881.9×
  49. 48Des PlainesIllinois, United States
    881.9×
  50. 50ElkhartIndiana, United States
    871.9×
  51. 51Puerto MonttLos Lagos Region, Chile
    871.9×
  52. 52WashingtonDistrict of Columbia, United States
    861.9×
  53. 53CuranilahueBiobio, Chile
    851.8×
  54. 53AntofagastaAntofagasta, Chile
    851.8×
  55. 55QuinteroValparaiso, Chile
    851.8×
  56. 56PristinaPristina, Kosovo
    841.8×
  57. 57La UniónLos Ríos Region, Chile
    841.8×
  58. 57ClarksvilleTennessee, United States
    841.8×
  59. 59TemucoAraucania, Chile
    841.8×
  60. 60South BendIndiana, United States
    831.8×
  61. 61Dhakalow-cost sensorsDhaka Division, Bangladesh
    831.7×
  62. 61MilwaukeeWisconsin, United States
    831.7×
  63. 61FontanaCalifornia, United States
    831.7×
  64. 64East Saint LouisIllinois, United States
    831.7×
  65. 64Oak LawnIllinois, United States
    831.7×
  66. 66JeffersontownKentucky, United States
    821.7×
  67. 67Puerto VarasLos Lagos Region, Chile
    821.7×
  68. 68Villa Poeta José Gálvez BarrenecheaLima region, Peru
    821.7×
  69. 69Saint MatthewsKentucky, United States
    821.7×
  70. 70Viña del MarValparaiso, Chile
    811.7×
  71. 70EvansvilleIndiana, United States
    811.7×
  72. 70JeffersonvilleIndiana, United States
    811.7×
  73. 70Kansas CityMissouri, United States
    811.7×
  74. 70Franklin ParkIllinois, United States
    811.7×
  75. 75Long BeachCalifornia, United States
    811.7×
  76. 76BremertonWashington, United States
    801.7×
  77. 77CoquimboCoquimbo Region, Chile
    801.6×
  78. 78LouisvilleKentucky, United States
    791.6×
  79. 79TocopillaAntofagasta, Chile
    791.6×
  80. 79ConcónValparaiso, Chile
    791.6×
  81. 81NorthbrookIllinois, United States
    781.6×
  82. 81LindenNew Jersey, United States
    781.6×
  83. 83CoronelBiobio, Chile
    781.6×
  84. 83BellevueNebraska, United States
    781.6×
  85. 85SpringdaleArkansas, United States
    781.6×
  86. 85CincinnatiOhio, United States
    781.6×
  87. 85DavenportIowa, United States
    781.6×
  88. 88RentonWashington, United States
    771.5×
  89. 89La SerenaCoquimbo Region, Chile
    771.5×
  90. 90SpringfieldVirginia, United States
    771.5×
  91. 91FresnoCalifornia, United States
    761.5×
  92. 92AkronOhio, United States
    761.5×
  93. 93RedfordMichigan, United States
    761.5×
  94. 94SpringfieldIllinois, United States
    761.5×
  95. 94RiversideCalifornia, United States
    761.5×
  96. 96Columbia CityWashington, United States
    761.5×
  97. 97CantonOhio, United States
    751.5×
  98. 97Great FallsMontana, United States
    751.5×
  99. 99San CarlosÑuble, Chile
    751.5×
  100. 99Valley StationKentucky, United States
    751.5×
  101. 101UticaNew York, United States
    751.5×
  102. 102Fort LeeNew Jersey, United States
    751.5×
  103. 103Nong KhaemBangkok, Thailand
    741.4×
  104. 103ArnoldMissouri, United States
    741.4×
  105. 105La Línea de la ConcepciónAndalusia, Spain
    741.4×
  106. 105Des MoinesIowa, United States
    741.4×
  107. 105Lincoln ParkMichigan, United States
    741.4×
  108. 108PrichardAlabama, United States
    741.4×
  109. 108NorwoodOhio, United States
    741.4×
  110. 108KalamazooMichigan, United States
    741.4×
  111. 108MidwayFlorida, United States
    741.4×
  112. 112San Pedro de la PazBiobio, Chile
    741.4×
  113. 113MaryvilleTennessee, United States
    731.4×
  114. 113South MilwaukeeWisconsin, United States
    731.4×
  115. 115ChiguayanteBiobio, Chile
    731.4×
  116. 115Alto HospicioTarapacá, Chile
    731.4×
  117. 115LafayetteIndiana, United States
    731.4×
  118. 115New York CityNew York, United States
    731.4×
  119. 119BogotáBogota D.C., Colombia
    731.4×
  120. 119BurbankCalifornia, United States
    731.4×
  121. 119TurlockCalifornia, United States
    731.4×
  122. 122Alcalá de HenaresMadrid, Spain
    731.4×
  123. 123ChennaiTamil Nadu, India
    721.4×
  124. 124ElizabethtownKentucky, United States
    721.4×
  125. 125CheektowagaNew York, United States
    721.4×
  126. 126JolietIllinois, United States
    711.3×
  127. 126VernonBritish Columbia, Canada
    711.3×
  128. 128BoiseIdaho, United States
    711.3×
  129. 128TacomaWashington, United States
    711.3×
  130. 130CalamaAntofagasta, Chile
    711.3×
  131. 130AricaArica y Parinacota Region, Chile
    711.3×
  132. 132AthensAttica, Greece
    711.3×
  133. 132SalamancaGuanajuato, Mexico
    711.3×
  134. 132Rose HillVirginia, United States
    711.3×
  135. 135LebanonOhio, United States
    701.3×
  136. 135IndioCalifornia, United States
    701.3×
  137. 135Rouyn-NorandaQuebec, Canada
    701.3×
  138. 138PrešovPrešov Region, Slovakia
    701.3×
  139. 138AntananarivoAnalamanga, Madagascar
    701.3×
  140. 138New AlbanyIndiana, United States
    701.3×
  141. 138PatersonNew Jersey, United States
    701.3×
  142. 142CaryIllinois, United States
    701.3×
  143. 143ToméBiobio, Chile
    701.3×
  144. 143FishersIndiana, United States
    701.3×
  145. 143Carsonlow-cost sensorsCalifornia, United States
    701.3×
  146. 146Islamabadlow-cost sensorsIslamabad, Pakistan
    701.3×
  147. 146Bay CityMichigan, United States
    701.3×
  148. 146DearbornMichigan, United States
    701.3×
  149. 149BeijingBeijing, China
    691.3×
  150. 149MolineIllinois, United States
    691.3×
  151. 149YpsilantiMichigan, United States
    691.3×
  152. 152BirminghamAlabama, United States
    691.3×
  153. 152Kansas CityKansas, United States
    691.3×
  154. 152ButteMontana, United States
    691.3×
  155. 155AsprópyrgosAttica, Greece
    691.3×
  156. 155CopiapóAtacama, Chile
    691.3×
  157. 155Jurupa ValleyCalifornia, United States
    691.3×
  158. 158ShenyangLiaoning, China
    691.2×
  159. 158CelayaGuanajuato, Mexico
    691.2×
  160. 158Port HuronMichigan, United States
    691.2×
  161. 161SpringfieldOhio, United States
    691.2×
  162. 161Calumet CityIllinois, United States
    691.2×
  163. 163KošiceKošice Region, Slovakia
    691.2×
  164. 163East RidgeTennessee, United States
    691.2×
  165. 163RockfordIllinois, United States
    691.2×
  166. 166ValdiviaLos Ríos Region, Chile
    681.2×
  167. 166AnkenyIowa, United States
    681.2×
  168. 166ClevelandOhio, United States
    681.2×
  169. 169RuseRuse, Bulgaria
    681.2×
  170. 169ZionIllinois, United States
    681.2×
  171. 171AshgabatAshgabat, Turkmenistan
    681.2×
  172. 171ConcepciónBiobio, Chile
    681.2×
  173. 171TaylorMichigan, United States
    681.2×
  174. 171HelenaMontana, United States
    681.2×
  175. 175Los ÁngelesBiobio, Chile
    681.2×
  176. 175MasonOhio, United States
    681.2×
  177. 177AbasoloGuanajuato, Mexico
    671.2×
  178. 177VisaliaCalifornia, United States
    671.2×
  179. 179SalorTashkent Region, Uzbekistan
    671.2×
  180. 179TijuanaBaja California, Mexico
    671.2×
  181. 179HolbrookNew York, United States
    671.2×
  182. 182San Luis de la PazGuanajuato, Mexico
    671.2×
  183. 183RužomberokŽilina Region, Slovakia
    671.2×
  184. 184AcharnésAttica, Greece
    671.2×
  185. 184Phenix CityAlabama, United States
    671.2×
  186. 186BuffaloNew York, United States
    661.2×
  187. 187HollandMichigan, United States
    661.1×
  188. 187WilkinsburgPennsylvania, United States
    661.1×
  189. 187Santa ClaritaCalifornia, United States
    661.1×
  190. 190VigoGalicia, Spain
    661.1×
  191. 191RosevilleCalifornia, United States
    661.1×
  192. 192Halle (Saale)Saxony-Anhalt, Germany
    661.1×
  193. 192GainesvilleGeorgia, United States
    661.1×
  194. 192DecaturIllinois, United States
    661.1×
  195. 192BloomingtonIndiana, United States
    661.1×
  196. 196Warner RobinsGeorgia, United States
    651.1×
  197. 197AuburnWashington, United States
    651.1×
  198. 198Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    651.1×
  199. 198NitraNitra Region, Slovakia
    651.1×
  200. 198ParadiseCalifornia, United States
    651.1×

Top 200 of 1,332 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, July 4, 2023, smogrank.com/history/2023-07-04 (accessed 2 Oct 2026).

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