SmogRank / History / July 2, 2023

Most polluted cities on July 2, 2023

1,313 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 103.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 2, 2023. All episodes.

← Coyhaique 103.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 2, 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
    1856.9×
  2. 2Fort McMurrayAlberta, Canada
    1776.2×
  3. 3LinaresMaule Region, Chile
    1564.2×
  4. 4RancaguaO'Higgins Region, Chile
    1523.8×
  5. 5RengoO'Higgins Region, Chile
    1523.8×
  6. 6DushanbeDushanbe, Tajikistan
    1463.6×
  7. 6SalorTashkent Region, Uzbekistan
    1463.6×
  8. 8Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1333.2×
  9. 9Puente AltoSantiago Metropolitan, Chile
    1273.1×
  10. 10SantiagoSantiago Metropolitan, Chile
    1243.0×
  11. 11CuricóMaule Region, Chile
    1172.8×
  12. 12CuranilahueBiobio, Chile
    1172.8×
  13. 13TalaganteSantiago Metropolitan, Chile
    1072.5×
  14. 14NairobiNairobi County, Kenya
    1052.5×
  15. 15Lahorelow-cost sensorsPunjab, Pakistan
    1022.4×
  16. 16DelhiDelhi, India
    1012.4×
  17. 17NacimientoBiobio, Chile
    1002.4×
  18. 18Addis AbabaAddis Ababa, Ethiopia
    992.3×
  19. 19HualpénBiobio, Chile
    982.3×
  20. 20JakartaJakarta, Indonesia
    982.3×
  21. 21HollandMichigan, United States
    982.3×
  22. 22BostonMassachusetts, United States
    972.3×
  23. 23Puerto AysénAysén, Chile
    972.2×
  24. 24BeijingBeijing, China
    952.2×
  25. 25EdmontonAlberta, Canada
    952.2×
  26. 26Islamabadlow-cost sensorsIslamabad, Pakistan
    952.2×
  27. 27ShenyangLiaoning, China
    942.2×
  28. 28AshgabatAshgabat, Turkmenistan
    942.1×
  29. 29HualquiBiobio, Chile
    942.1×
  30. 29QuincyMassachusetts, United States
    942.1×
  31. 31TalcaMaule Region, Chile
    922.1×
  32. 31San CarlosÑuble, Chile
    922.1×
  33. 33CoronelBiobio, Chile
    922.1×
  34. 34BrocktonMassachusetts, United States
    912.0×
  35. 35BridgeportConnecticut, United States
    902.0×
  36. 36ChillánÑuble, Chile
    892.0×
  37. 37QuillotaValparaiso, Chile
    871.9×
  38. 38Los ÁngelesBiobio, Chile
    861.9×
  39. 39GranbyQuebec, Canada
    861.9×
  40. 40DrummondvilleQuebec, Canada
    861.8×
  41. 41PleasantvilleNew Jersey, United States
    851.8×
  42. 42PristinaPristina, Kosovo
    851.8×
  43. 42HartfordConnecticut, United States
    851.8×
  44. 42LowellMassachusetts, United States
    851.8×
  45. 42KingstonOntario, Canada
    851.8×
  46. 46WaterburyConnecticut, United States
    851.8×
  47. 46BrossardQuebec, Canada
    851.8×
  48. 48ChennaiTamil Nadu, India
    851.8×
  49. 49Şabāḩ as SālimMubārak al Kabīr, Kuwait
    851.8×
  50. 50Dhakalow-cost sensorsDhaka Division, Bangladesh
    851.8×
  51. 50ParadiseCalifornia, United States
    851.8×
  52. 52BurlingtonVermont, United States
    841.8×
  53. 53LynnMassachusetts, United States
    831.8×
  54. 54New HavenConnecticut, United States
    821.7×
  55. 54GreenfieldMassachusetts, United States
    821.7×
  56. 56East HamptonVirginia, United States
    821.7×
  57. 57ShawiniganQuebec, Canada
    821.7×
  58. 58L'Ancienne-LoretteQuebec, Canada
    821.7×
  59. 59SarajevoFederation of B&H, Bosnia and Herzegovina
    811.7×
  60. 60TemucoAraucania, Chile
    811.7×
  61. 60PortlandMaine, United States
    811.7×
  62. 62QuinteroValparaiso, Chile
    811.7×
  63. 63AntofagastaAntofagasta, Chile
    801.7×
  64. 64La UniónLos Ríos Region, Chile
    801.6×
  65. 64Toms RiverNew Jersey, United States
    801.6×
  66. 66AntananarivoAnalamanga, Madagascar
    801.6×
  67. 66HanoiHanoi, Vietnam
    801.6×
  68. 66SpringfieldMassachusetts, United States
    801.6×
  69. 66St. AlbertAlberta, Canada
    801.6×
  70. 70New LondonConnecticut, United States
    801.6×
  71. 71Silao de la VictoriaGuanajuato, Mexico
    791.6×
  72. 72OsornoLos Lagos Region, Chile
    791.6×
  73. 73North ChicopeeMassachusetts, United States
    791.6×
  74. 73BensalemPennsylvania, United States
    791.6×
  75. 75PawtucketRhode Island, United States
    791.6×
  76. 76WorcesterMassachusetts, United States
    791.6×
  77. 77ProvidenceRhode Island, United States
    781.6×
  78. 78CauquenesMaule Region, Chile
    781.6×
  79. 79ShakopeeMinnesota, United States
    781.6×
  80. 79RutlandVermont, United States
    781.6×
  81. 81ConcónValparaiso, Chile
    781.6×
  82. 81TijuanaBaja California, Mexico
    781.6×
  83. 83Alto HospicioTarapacá, Chile
    781.6×
  84. 84Viña del MarValparaiso, Chile
    771.6×
  85. 84HaverhillMassachusetts, United States
    771.6×
  86. 84South MilwaukeeWisconsin, United States
    771.6×
  87. 87ChesapeakeVirginia, United States
    771.5×
  88. 88DanburyConnecticut, United States
    771.5×
  89. 89VigoGalicia, Spain
    771.5×
  90. 89LotaBiobio, Chile
    771.5×
  91. 91TrierRheinland-Pfalz, Germany
    761.5×
  92. 91HolbrookNew York, United States
    761.5×
  93. 91Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    761.5×
  94. 94Saint AndrewsSouth Carolina, United States
    761.5×
  95. 95South VinelandNew Jersey, United States
    751.5×
  96. 95KeeneNew Hampshire, United States
    751.5×
  97. 97AlbanyNew York, United States
    751.5×
  98. 97CoventryRhode Island, United States
    751.5×
  99. 99PittsfieldMassachusetts, United States
    741.4×
  100. 99New York CityNew York, United States
    741.4×
  101. 101DoverDelaware, United States
    741.4×
  102. 102BurnsvilleMinnesota, United States
    741.4×
  103. 102PortsmouthNew Hampshire, United States
    741.4×
  104. 102ElizabethNew Jersey, United States
    741.4×
  105. 102BarrieOntario, Canada
    741.4×
  106. 106FlorenceSouth Carolina, United States
    741.4×
  107. 107Saint MichaelMinnesota, United States
    731.4×
  108. 107QuébecQuebec, Canada
    731.4×
  109. 109ValdiviaLos Ríos Region, Chile
    731.4×
  110. 110NewarkDelaware, United States
    731.4×
  111. 110Saint CloudMinnesota, United States
    731.4×
  112. 112Karachilow-cost sensorsSindh, Pakistan
    731.4×
  113. 113Fall RiverMassachusetts, United States
    731.4×
  114. 114ValdostaGeorgia, United States
    721.4×
  115. 114GreenvilleNorth Carolina, United States
    721.4×
  116. 114New BrunswickNew Jersey, United States
    721.4×
  117. 117MinneapolisMinnesota, United States
    721.4×
  118. 118SyracuseNew York, United States
    721.4×
  119. 119PrešovPrešov Region, Slovakia
    721.4×
  120. 120IzegemFlanders, Belgium
    721.3×
  121. 120TalcahuanoBiobio, Chile
    721.3×
  122. 120Apple ValleyMinnesota, United States
    721.3×
  123. 123LancasterPennsylvania, United States
    711.3×
  124. 124MontréalQuebec, Canada
    711.3×
  125. 125KošiceKošice Region, Slovakia
    711.3×
  126. 126TrentonNew Jersey, United States
    711.3×
  127. 126CornwallOntario, Canada
    711.3×
  128. 128PhiladelphiaPennsylvania, United States
    711.3×
  129. 128Jersey CityNew Jersey, United States
    711.3×
  130. 128Grande PrairieAlberta, Canada
    711.3×
  131. 128TorontoOntario, Canada
    711.3×
  132. 132LindenNew Jersey, United States
    711.3×
  133. 132FontanaCalifornia, United States
    711.3×
  134. 134ÉtampesÎle-de-France, France
    701.3×
  135. 134CalamaAntofagasta, Chile
    701.3×
  136. 134HempsteadNew York, United States
    701.3×
  137. 137KortrijkFlanders, Belgium
    701.3×
  138. 138ParisÎle-de-France, France
    701.3×
  139. 138Puerto VarasLos Lagos Region, Chile
    701.3×
  140. 138BearDelaware, United States
    701.3×
  141. 141MenenFlanders, Belgium
    701.3×
  142. 141ChiguayanteBiobio, Chile
    701.3×
  143. 141ComptonCalifornia, United States
    701.3×
  144. 144AsprópyrgosAttica, Greece
    701.3×
  145. 144RambouilletÎle-de-France, France
    701.3×
  146. 144Saint PaulMinnesota, United States
    701.3×
  147. 144DerryNew Hampshire, United States
    701.3×
  148. 148RouenNormandy, France
    691.3×
  149. 148MelunÎle-de-France, France
    691.3×
  150. 150SarcellesÎle-de-France, France
    691.3×
  151. 150DouaiHauts-de-France, France
    691.3×
  152. 150CoquimboCoquimbo Region, Chile
    691.3×
  153. 150NorthbrookIllinois, United States
    691.3×
  154. 154WaregemFlanders, Belgium
    691.3×
  155. 154AricaArica y Parinacota Region, Chile
    691.3×
  156. 154EwingNew Jersey, United States
    691.3×
  157. 157Puerto MonttLos Lagos Region, Chile
    691.2×
  158. 157KitchenerOntario, Canada
    691.2×
  159. 159La SerenaCoquimbo Region, Chile
    691.2×
  160. 160TournaiWallonia, Belgium
    691.2×
  161. 160WilmingtonDelaware, United States
    691.2×
  162. 162PennsaukenNew Jersey, United States
    681.2×
  163. 162SaguenayQuebec, Canada
    681.2×
  164. 164AuxerreBourgogne-Franche-Comté, France
    681.2×
  165. 164ToméBiobio, Chile
    681.2×
  166. 164CopiapóAtacama, Chile
    681.2×
  167. 164Ferry PassFlorida, United States
    681.2×
  168. 164Trois-RivièresQuebec, Canada
    681.2×
  169. 169OlivetCentre-Val de Loire, France
    681.2×
  170. 169White PlainsNew York, United States
    681.2×
  171. 171Spišská Nová VesKošice Region, Slovakia
    681.2×
  172. 171San RoqueAndalusia, Spain
    681.2×
  173. 171GlendoraCalifornia, United States
    681.2×
  174. 174RoeselareFlanders, Belgium
    681.2×
  175. 174CoulommiersÎle-de-France, France
    681.2×
  176. 174BourgesCentre-Val de Loire, France
    681.2×
  177. 174San Pedro de la PazBiobio, Chile
    681.2×
  178. 178VerdunGrand Est, France
    671.2×
  179. 178RochesterMinnesota, United States
    671.2×
  180. 180BloisCentre-Val de Loire, France
    671.2×
  181. 180ChesterPennsylvania, United States
    671.2×
  182. 180Hawthornelow-cost sensorsCalifornia, United States
    671.2×
  183. 180Sherwood ParkAlberta, Canada
    671.2×
  184. 184FayettevilleNorth Carolina, United States
    671.2×
  185. 185Sainte-Geneviève-des-BoisÎle-de-France, France
    671.2×
  186. 185ElktonMaryland, United States
    671.2×
  187. 185JenisonMichigan, United States
    671.2×
  188. 185ScrantonPennsylvania, United States
    671.2×
  189. 189AcharnésAttica, Greece
    671.2×
  190. 189La Línea de la ConcepciónAndalusia, Spain
    671.2×
  191. 189DreuxCentre-Val de Loire, France
    671.2×
  192. 189BéthuneHauts-de-France, France
    671.2×
  193. 189MidwayFlorida, United States
    671.2×
  194. 194Jurupa ValleyCalifornia, United States
    661.2×
  195. 195AthensAttica, Greece
    661.2×
  196. 195ValenciennesHauts-de-France, France
    661.2×
  197. 195Fort LeeNew Jersey, United States
    661.2×
  198. 195PeterboroughOntario, Canada
    661.2×
  199. 199HumennéPrešov Region, Slovakia
    661.1×
  200. 199Las Palmas de Gran CanariaCanary Islands, Spain
    661.1×

Top 200 of 1,313 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 2, 2023, smogrank.com/history/2023-07-02 (accessed 2 Oct 2026).

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