SmogRank / History / July 7, 2023

Most polluted cities on July 7, 2023

1,333 cities ranked by their average PM2.5 over the day; the worst was Osorno, Chile, at 138.0 µg/m³. Each city's own local calendar day.

← Osorno 138.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 7, 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. 1OsornoLos Lagos Region, Chile
    2139.2×
  2. 2Puerto VarasLos Lagos Region, Chile
    2008.3×
  3. 3NacimientoBiobio, Chile
    1816.6×
  4. 4CoyhaiqueAysén, Chile
    1776.2×
  5. 5CuranilahueBiobio, Chile
    1756.0×
  6. 6TemucoAraucania, Chile
    1705.5×
  7. 6HualpénBiobio, Chile
    1705.5×
  8. 8AnacortesWashington, United States
    1614.6×
  9. 9La UniónLos Ríos Region, Chile
    1584.4×
  10. 10Los ÁngelesBiobio, Chile
    1584.4×
  11. 11Puerto AysénAysén, Chile
    1564.2×
  12. 12RengoO'Higgins Region, Chile
    1554.0×
  13. 13Fort St. JohnBritish Columbia, Canada
    1544.0×
  14. 14TalaganteSantiago Metropolitan, Chile
    1533.9×
  15. 15Puerto MonttLos Lagos Region, Chile
    1533.8×
  16. 16San CarlosÑuble, Chile
    1523.8×
  17. 17KigaliKigali, Rwanda
    1523.8×
  18. 18SantiagoSantiago Metropolitan, Chile
    1473.6×
  19. 19RancaguaO'Higgins Region, Chile
    1463.6×
  20. 20ChillánÑuble, Chile
    1423.5×
  21. 21TalcahuanoBiobio, Chile
    1343.3×
  22. 22ManamaManama, Bahrain
    1313.2×
  23. 23JakartaJakarta, Indonesia
    1293.1×
  24. 24CoronelBiobio, Chile
    1293.1×
  25. 25HualquiBiobio, Chile
    1263.0×
  26. 26ValdiviaLos Ríos Region, Chile
    1253.0×
  27. 27Karachilow-cost sensorsSindh, Pakistan
    1212.9×
  28. 28Puente AltoSantiago Metropolitan, Chile
    1202.9×
  29. 29ToméBiobio, Chile
    1182.8×
  30. 30TalcaMaule Region, Chile
    1092.6×
  31. 31CauquenesMaule Region, Chile
    1062.5×
  32. 32Addis AbabaAddis Ababa, Ethiopia
    1032.4×
  33. 33QuillotaValparaiso, Chile
    1022.4×
  34. 34AnconaThe Marches, Italy
    982.3×
  35. 34EdmontonAlberta, Canada
    982.3×
  36. 36ChiguayanteBiobio, Chile
    962.2×
  37. 37Şabāḩ as SālimMubārak al Kabīr, Kuwait
    932.1×
  38. 38PristinaPristina, Kosovo
    932.1×
  39. 39CuricóMaule Region, Chile
    912.1×
  40. 40San Pedro de la PazBiobio, Chile
    892.0×
  41. 41Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    881.9×
  42. 41ConcepciónBiobio, Chile
    881.9×
  43. 43DelhiDelhi, India
    881.9×
  44. 44SarajevoFederation of B&H, Bosnia and Herzegovina
    871.9×
  45. 45DushanbeDushanbe, Tajikistan
    841.8×
  46. 46Dhakalow-cost sensorsDhaka Division, Bangladesh
    831.8×
  47. 47LinaresMaule Region, Chile
    831.8×
  48. 48Prince GeorgeBritish Columbia, Canada
    831.7×
  49. 49AntofagastaAntofagasta, Chile
    821.7×
  50. 50AntananarivoAnalamanga, Madagascar
    811.7×
  51. 51QuinteroValparaiso, Chile
    801.6×
  52. 52Alto HospicioTarapacá, Chile
    791.6×
  53. 53ConcónValparaiso, Chile
    781.6×
  54. 54Islamabadlow-cost sensorsIslamabad, Pakistan
    781.6×
  55. 55CoquimboCoquimbo Region, Chile
    771.6×
  56. 56BakuBaki, Azerbaijan
    761.5×
  57. 57La SerenaCoquimbo Region, Chile
    751.5×
  58. 57Red DeerAlberta, Canada
    751.5×
  59. 59TocopillaAntofagasta, Chile
    751.5×
  60. 60ChennaiTamil Nadu, India
    751.5×
  61. 61Viña del MarValparaiso, Chile
    731.4×
  62. 62AricaArica y Parinacota Region, Chile
    731.4×
  63. 63Fort McMurrayAlberta, Canada
    721.4×
  64. 64Grande PrairieAlberta, Canada
    701.3×
  65. 65Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast
    691.3×
  66. 65Abujalow-cost sensorsFCT, Nigeria
    691.3×
  67. 67Tha BoNong Khai, Thailand
    691.3×
  68. 67BendorfRheinland-Pfalz, Germany
    691.3×
  69. 69São PauloSão Paulo, Brazil
    691.2×
  70. 70ParadiseCalifornia, United States
    681.2×
  71. 71CopiapóAtacama, Chile
    681.2×
  72. 71KamloopsBritish Columbia, Canada
    681.2×
  73. 73CalamaAntofagasta, Chile
    681.2×
  74. 73León de los AldamaGuanajuato, Mexico
    681.2×
  75. 75ShenyangLiaoning, China
    671.2×
  76. 75Idaho FallsIdaho, United States
    671.2×
  77. 77Nong KhaemBangkok, Thailand
    661.2×
  78. 78PesaroThe Marches, Italy
    661.2×
  79. 78Sherwood ParkAlberta, Canada
    661.2×
  80. 80WeidenBavaria, Germany
    661.1×
  81. 80St. AlbertAlberta, Canada
    661.1×
  82. 82L'Ancienne-LoretteQuebec, Canada
    651.1×
  83. 83JeddahMecca Region, Saudi Arabia
    651.1×
  84. 83Saint-QuentinHauts-de-France, France
    651.1×
  85. 85NišCentral Serbia, Serbia
    651.1×
  86. 86HavířovMoravian-Silesian Region, Czechia
    641.1×
  87. 86BensalemPennsylvania, United States
    641.1×
  88. 88TerraceBritish Columbia, Canada
    641.1×
  89. 89Bang Bo DistrictSamut Prakan, Thailand
    641.1×
  90. 89LotaBiobio, Chile
    641.1×
  91. 91CelayaGuanajuato, Mexico
    641.1×
  92. 92La Línea de la ConcepciónAndalusia, Spain
    631.1×
  93. 92La Crescenta-Montroselow-cost sensorsCalifornia, United States
    631.1×
  94. 94MostaIl-Mosta, Malta
    631.0×
  95. 95NaplesCampania, Italy
    631.0×
  96. 96Lagoslow-cost sensorsLagos, Nigeria
    631.0×
  97. 96SpeyerRheinland-Pfalz, Germany
    631.0×
  98. 96Santa ClaritaCalifornia, United States
    631.0×
  99. 99AthensAttica, Greece
    631.0×
  100. 99RuseRuse, Bulgaria
    631.0×
  101. 99MartinŽilina Region, Slovakia
    631.0×
  102. 102Český TěšínMoravian-Silesian Region, Czechia
    621.0×
  103. 103KavadarciKavadarci, North Macedonia
    621.0×
  104. 104BeijingBeijing, China
    621.0×
  105. 104GroßostheimBavaria, Germany
    621.0×
  106. 104Roanoke RapidsNorth Carolina, United States
    621.0×
  107. 104ElizabethNew Jersey, United States
    621.0×
  108. 108Phra PradaengSamut Prakan, Thailand
    621.0×
  109. 108GuangzhouGuangdong, China
    621.0×
  110. 110PrešovPrešov Region, Slovakia
    611.0×
  111. 111Khlong LuangPathum Thani, Thailand
    611.0×
  112. 112Great FallsMontana, United States
    611.0×
  113. 113OstravaMoravian-Silesian Region, Czechia
    611.0×
  114. 113Alcalá de HenaresMadrid, Spain
    611.0×
  115. 113SalamancaGuanajuato, Mexico
    611.0×
  116. 116SofiaSofia-Capital, Bulgaria
    611.0×
  117. 116TrentonNew Jersey, United States
    611.0×
  118. 116Los AngelesCalifornia, United States
    611.0×
  119. 119ColomboWestern Province, Sri Lanka
    610.9×
  120. 119QuébecQuebec, Canada
    610.9×
  121. 121KaiserslauternRheinland-Pfalz, Germany
    600.9×
  122. 122AstanaAstana, Kazakhstan
    600.9×
  123. 122HollandMichigan, United States
    600.9×
  124. 122BurbankCalifornia, United States
    600.9×
  125. 125San RoqueAndalusia, Spain
    600.9×
  126. 126AlgiersAlgiers, Algeria
    600.9×
  127. 126West MifflinPennsylvania, United States
    600.9×
  128. 128BangkokBangkok, Thailand
    590.9×
  129. 128KrefeldNorth Rhine-Westphalia, Germany
    590.9×
  130. 130AsprópyrgosAttica, Greece
    590.9×
  131. 130SliemaTas-Sliema, Malta
    590.9×
  132. 130NitraNitra Region, Slovakia
    590.9×
  133. 133Ludwigshafen am RheinRheinland-Pfalz, Germany
    590.9×
  134. 133RiversideCalifornia, United States
    590.9×
  135. 133Medicine HatAlberta, Canada
    590.9×
  136. 136TetovoTetovo, North Macedonia
    590.9×
  137. 136Falconara MarittimaThe Marches, Italy
    590.9×
  138. 136BaltimoreMaryland, United States
    590.9×
  139. 136CalgaryAlberta, Canada
    590.9×
  140. 140AcharnésAttica, Greece
    590.9×
  141. 140Bang KapiBangkok, Thailand
    590.9×
  142. 140FontanaCalifornia, United States
    590.9×
  143. 143MostÚstí nad Labem Region, Czechia
    580.9×
  144. 143Calumet CityIllinois, United States
    580.9×
  145. 145KošiceKošice Region, Slovakia
    580.9×
  146. 145WashingtonDistrict of Columbia, United States
    580.9×
  147. 145South VinelandNew Jersey, United States
    580.9×
  148. 148ThessaloníkiCentral Macedonia, Greece
    580.9×
  149. 148JaénAndalusia, Spain
    580.9×
  150. 148LitvínovÚstí nad Labem Region, Czechia
    580.9×
  151. 148FayettevilleNorth Carolina, United States
    580.9×
  152. 148HarrisburgPennsylvania, United States
    580.9×
  153. 153PhiladelphiaPennsylvania, United States
    580.9×
  154. 153Greater SudburyOntario, Canada
    580.9×
  155. 155Hradec KrálovéHradec Králové Region, Czechia
    580.8×
  156. 155CuencaCastille-La Mancha, Spain
    580.8×
  157. 157Valašské MeziříčíZlín, Czechia
    580.8×
  158. 157BilbaoBasque Country, Spain
    580.8×
  159. 157JolietIllinois, United States
    580.8×
  160. 157KalamazooMichigan, United States
    580.8×
  161. 157EdmundstonNew Brunswick, Canada
    580.8×
  162. 162PiraeusAttica, Greece
    570.8×
  163. 162Samut PrakanSamut Prakan, Thailand
    570.8×
  164. 162New BrunswickNew Jersey, United States
    570.8×
  165. 165KhalándrionAttica, Greece
    570.8×
  166. 165Sainte-Geneviève-des-BoisÎle-de-France, France
    570.8×
  167. 165PřerovOlomouc Region, Czechia
    570.8×
  168. 165Collado-VillalbaMadrid, Spain
    570.8×
  169. 165NewarkDelaware, United States
    570.8×
  170. 165CatañoCataño, Puerto Rico
    570.8×
  171. 165HoustonTexas, United States
    570.8×
  172. 165Jurupa ValleyCalifornia, United States
    570.8×
  173. 173VelesVeles, North Macedonia
    570.8×
  174. 173Laudio / LlodioBasque Country, Spain
    570.8×
  175. 173NapervilleIllinois, United States
    570.8×
  176. 173EwingNew Jersey, United States
    570.8×
  177. 177Nakhon PathomNakhon Pathom, Thailand
    570.8×
  178. 177TřinecMoravian-Silesian Region, Czechia
    570.8×
  179. 177LancasterPennsylvania, United States
    570.8×
  180. 180SalernoCampania, Italy
    570.8×
  181. 180RaleighNorth Carolina, United States
    570.8×
  182. 180PortlandMaine, United States
    570.8×
  183. 183Samut SakhonSamut Sakhon, Thailand
    560.8×
  184. 183AlessandriaPiedmont, Italy
    560.8×
  185. 183MorrisvilleNorth Carolina, United States
    560.8×
  186. 183Port ArthurTexas, United States
    560.8×
  187. 187TrierRheinland-Pfalz, Germany
    560.8×
  188. 187NurembergBavaria, Germany
    560.8×
  189. 187Frýdek-MístekMoravian-Silesian Region, Czechia
    560.8×
  190. 187PisaTuscany, Italy
    560.8×
  191. 187GlendoraCalifornia, United States
    560.8×
  192. 187FrederictonNew Brunswick, Canada
    560.8×
  193. 193ToledoCastille-La Mancha, Spain
    560.8×
  194. 193ŽilinaŽilina Region, Slovakia
    560.8×
  195. 193MassaTuscany, Italy
    560.8×
  196. 193LewistonMaine, United States
    560.8×
  197. 193McKeesportPennsylvania, United States
    560.8×
  198. 193ScrantonPennsylvania, United States
    560.8×
  199. 193EllensburgWashington, United States
    560.8×
  200. 200GranadaAndalusia, Spain
    560.8×

Top 200 of 1,333 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 7, 2023, smogrank.com/history/2023-07-07 (accessed 2 Oct 2026).

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