SmogRank / History / July 1, 2023

Most polluted cities on July 1, 2023

1,375 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 247.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 1, 2023. All episodes.

← Coyhaique 247.5 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for July 1, 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
    34516.5×
  2. 2LinaresMaule Region, Chile
    2219.7×
  3. 3NacimientoBiobio, Chile
    2028.4×
  4. 4Los ÁngelesBiobio, Chile
    1897.3×
  5. 5HualpénBiobio, Chile
    1836.7×
  6. 6San CarlosÑuble, Chile
    1816.6×
  7. 7TalcahuanoBiobio, Chile
    1786.3×
  8. 8Fort McMurrayAlberta, Canada
    1725.7×
  9. 9ChillánÑuble, Chile
    1705.5×
  10. 10CuricóMaule Region, Chile
    1705.5×
  11. 11CuranilahueBiobio, Chile
    1705.5×
  12. 12RancaguaO'Higgins Region, Chile
    1665.2×
  13. 13OsornoLos Lagos Region, Chile
    1634.8×
  14. 14TalaganteSantiago Metropolitan, Chile
    1614.6×
  15. 15CoronelBiobio, Chile
    1604.6×
  16. 16TalcaMaule Region, Chile
    1604.6×
  17. 17SantiagoSantiago Metropolitan, Chile
    1604.5×
  18. 18ValdiviaLos Ríos Region, Chile
    1574.2×
  19. 19GreenfieldMassachusetts, United States
    1554.0×
  20. 20ScrantonPennsylvania, United States
    1523.8×
  21. 21TemucoAraucania, Chile
    1523.8×
  22. 22BurlingtonVermont, United States
    1523.8×
  23. 23PittsfieldMassachusetts, United States
    1493.7×
  24. 24RutlandVermont, United States
    1483.6×
  25. 25AlbanyNew York, United States
    1473.6×
  26. 26WorcesterMassachusetts, United States
    1473.6×
  27. 27WaterburyConnecticut, United States
    1433.5×
  28. 28HualquiBiobio, Chile
    1433.5×
  29. 29JakartaJakarta, Indonesia
    1423.5×
  30. 30RengoO'Higgins Region, Chile
    1413.5×
  31. 31BridgeportConnecticut, United States
    1353.3×
  32. 32Puerto AysénAysén, Chile
    1343.3×
  33. 32CauquenesMaule Region, Chile
    1343.3×
  34. 34SpringfieldMassachusetts, United States
    1343.3×
  35. 35GranbyQuebec, Canada
    1343.3×
  36. 36North ChicopeeMassachusetts, United States
    1333.2×
  37. 37HartfordConnecticut, United States
    1293.1×
  38. 38BrossardQuebec, Canada
    1293.1×
  39. 39DanburyConnecticut, United States
    1283.1×
  40. 40ConcepciónBiobio, Chile
    1283.1×
  41. 41ToméBiobio, Chile
    1263.1×
  42. 42BellevilleOntario, Canada
    1263.0×
  43. 43KeeneNew Hampshire, United States
    1253.0×
  44. 43PeterboroughOntario, Canada
    1253.0×
  45. 45Saint-Jean-sur-RichelieuQuebec, Canada
    1243.0×
  46. 46PawtucketRhode Island, United States
    1233.0×
  47. 47UticaNew York, United States
    1222.9×
  48. 48Addis AbabaAddis Ababa, Ethiopia
    1212.9×
  49. 48CornwallOntario, Canada
    1212.9×
  50. 50LancasterPennsylvania, United States
    1202.9×
  51. 51LebanonPennsylvania, United States
    1192.9×
  52. 52Puente AltoSantiago Metropolitan, Chile
    1182.8×
  53. 53Fall RiverMassachusetts, United States
    1172.8×
  54. 54MontréalQuebec, Canada
    1172.8×
  55. 55Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    1172.8×
  56. 56Lahorelow-cost sensorsPunjab, Pakistan
    1142.7×
  57. 56BrocktonMassachusetts, United States
    1142.7×
  58. 56ProvidenceRhode Island, United States
    1142.7×
  59. 59LimaLima Province, Peru
    1142.7×
  60. 60ReadingPennsylvania, United States
    1132.7×
  61. 60KingstonOntario, Canada
    1132.7×
  62. 62New HavenConnecticut, United States
    1132.7×
  63. 63HarrisburgPennsylvania, United States
    1122.7×
  64. 64Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1122.7×
  65. 64ChiguayanteBiobio, Chile
    1122.7×
  66. 66NewburghNew York, United States
    1122.7×
  67. 67BarrieOntario, Canada
    1112.6×
  68. 68DushanbeDushanbe, Tajikistan
    1112.6×
  69. 69Puerto VarasLos Lagos Region, Chile
    1112.6×
  70. 70BethlehemPennsylvania, United States
    1112.6×
  71. 71DrummondvilleQuebec, Canada
    1092.6×
  72. 72BensalemPennsylvania, United States
    1092.6×
  73. 73OttawaOntario, Canada
    1072.5×
  74. 74San Pedro de la PazBiobio, Chile
    1072.5×
  75. 75HollandMichigan, United States
    1062.5×
  76. 75CarlislePennsylvania, United States
    1062.5×
  77. 77DorvalQuebec, Canada
    1052.5×
  78. 78SyracuseNew York, United States
    1042.5×
  79. 78North BayOntario, Canada
    1042.5×
  80. 80YorkPennsylvania, United States
    1042.4×
  81. 80New CityNew York, United States
    1042.4×
  82. 80AllentownPennsylvania, United States
    1042.4×
  83. 83PatersonNew Jersey, United States
    1032.4×
  84. 84QuinteroValparaiso, Chile
    1012.4×
  85. 85NewarkDelaware, United States
    982.3×
  86. 85QuincyMassachusetts, United States
    982.3×
  87. 87BaltimoreMaryland, United States
    972.3×
  88. 88LotaBiobio, Chile
    972.2×
  89. 89East HamptonVirginia, United States
    962.2×
  90. 89Rose HillVirginia, United States
    962.2×
  91. 89New York CityNew York, United States
    962.2×
  92. 92GreenvilleNorth Carolina, United States
    962.2×
  93. 93White PlainsNew York, United States
    962.2×
  94. 93ShawiniganQuebec, Canada
    962.2×
  95. 95PennsaukenNew Jersey, United States
    952.2×
  96. 95Santa Anita - Los FicusLima region, Peru
    952.2×
  97. 97SpringfieldVirginia, United States
    952.2×
  98. 97New LondonConnecticut, United States
    952.2×
  99. 99CoquimboCoquimbo Region, Chile
    952.2×
  100. 99Fort St. JohnBritish Columbia, Canada
    952.2×
  101. 101PhiladelphiaPennsylvania, United States
    942.1×
  102. 101ChesapeakeVirginia, United States
    942.1×
  103. 103ElizabethNew Jersey, United States
    942.1×
  104. 104New BrunswickNew Jersey, United States
    932.1×
  105. 105BuffaloNew York, United States
    922.1×
  106. 106ScaggsvilleMaryland, United States
    922.1×
  107. 107QuillotaValparaiso, Chile
    912.1×
  108. 108EwingNew Jersey, United States
    912.0×
  109. 109BostonMassachusetts, United States
    902.0×
  110. 110ElktonMaryland, United States
    902.0×
  111. 110Fort LeeNew Jersey, United States
    902.0×
  112. 112WashingtonDistrict of Columbia, United States
    902.0×
  113. 113WilmingtonDelaware, United States
    892.0×
  114. 113LowellMassachusetts, United States
    892.0×
  115. 115Ciudad JuárezChihuahua, Mexico
    892.0×
  116. 116Jersey CityNew Jersey, United States
    892.0×
  117. 116RochesterNew York, United States
    892.0×
  118. 118HagerstownMaryland, United States
    892.0×
  119. 119LindenNew Jersey, United States
    881.9×
  120. 120HanoiHanoi, Vietnam
    881.9×
  121. 121Roanoke RapidsNorth Carolina, United States
    881.9×
  122. 121RichmondVirginia, United States
    881.9×
  123. 123PristinaPristina, Kosovo
    881.9×
  124. 123West FargoNorth Dakota, United States
    881.9×
  125. 123NorristownPennsylvania, United States
    881.9×
  126. 126AntofagastaAntofagasta, Chile
    881.9×
  127. 127ChesterPennsylvania, United States
    871.9×
  128. 128HolbrookNew York, United States
    871.9×
  129. 129EdgewoodMaryland, United States
    871.9×
  130. 129CheektowagaNew York, United States
    871.9×
  131. 131JenisonMichigan, United States
    871.9×
  132. 132Saint AndrewsSouth Carolina, United States
    861.9×
  133. 133CoventryRhode Island, United States
    861.9×
  134. 134TrentonNew Jersey, United States
    861.8×
  135. 135ConcónValparaiso, Chile
    851.8×
  136. 136Viña del MarValparaiso, Chile
    851.8×
  137. 137South MilwaukeeWisconsin, United States
    851.8×
  138. 138AntananarivoAnalamanga, Madagascar
    851.8×
  139. 139La SerenaCoquimbo Region, Chile
    841.8×
  140. 140AshgabatAshgabat, Turkmenistan
    841.8×
  141. 141DoverDelaware, United States
    841.8×
  142. 141South LaurelMaryland, United States
    841.8×
  143. 143BearDelaware, United States
    841.8×
  144. 144ValdostaGeorgia, United States
    831.8×
  145. 144FlorenceSouth Carolina, United States
    831.8×
  146. 146Hunt ValleyMaryland, United States
    831.7×
  147. 146HopewellVirginia, United States
    831.7×
  148. 148State CollegePennsylvania, United States
    821.7×
  149. 149SalorTashkent Region, Uzbekistan
    821.7×
  150. 150HempsteadNew York, United States
    811.7×
  151. 151RaleighNorth Carolina, United States
    811.7×
  152. 152Şabāḩ as SālimMubārak al Kabīr, Kuwait
    801.7×
  153. 152PrešovPrešov Region, Slovakia
    801.7×
  154. 152BeijingBeijing, China
    801.7×
  155. 155TarnówLesser Poland, Poland
    801.6×
  156. 156Warner RobinsGeorgia, United States
    801.6×
  157. 156Greater SudburyOntario, Canada
    801.6×
  158. 158RockvilleMaryland, United States
    801.6×
  159. 159KošiceKošice Region, Slovakia
    791.6×
  160. 159Islamabadlow-cost sensorsIslamabad, Pakistan
    791.6×
  161. 161La UniónLos Ríos Region, Chile
    791.6×
  162. 162ChennaiTamil Nadu, India
    791.6×
  163. 162LynnMassachusetts, United States
    791.6×
  164. 164NorthbrookIllinois, United States
    791.6×
  165. 164Grand RapidsMichigan, United States
    791.6×
  166. 166BurnsvilleMinnesota, United States
    781.6×
  167. 167PesaroThe Marches, Italy
    781.6×
  168. 168PortageIndiana, United States
    771.6×
  169. 169NairobiNairobi County, Kenya
    771.5×
  170. 170HamiltonOntario, Canada
    771.5×
  171. 171MorrisvilleNorth Carolina, United States
    771.5×
  172. 171CharlottesvilleVirginia, United States
    771.5×
  173. 171SarniaOntario, Canada
    771.5×
  174. 174Port HuronMichigan, United States
    771.5×
  175. 175Saint CloudMinnesota, United States
    771.5×
  176. 175Saint PaulMinnesota, United States
    771.5×
  177. 177Villa Poeta José Gálvez BarrenecheaLima region, Peru
    761.5×
  178. 177ShakopeeMinnesota, United States
    761.5×
  179. 177KenmoreNew York, United States
    761.5×
  180. 180SarajevoFederation of B&H, Bosnia and Herzegovina
    761.5×
  181. 181MaconGeorgia, United States
    761.5×
  182. 181Saint MichaelMinnesota, United States
    761.5×
  183. 183MielecSubcarpathia, Poland
    761.5×
  184. 183Dhakalow-cost sensorsDhaka Division, Bangladesh
    761.5×
  185. 183DelhiDelhi, India
    761.5×
  186. 186Little RockArkansas, United States
    751.5×
  187. 186Los AngelesCalifornia, United States
    751.5×
  188. 188BrestBrittany, France
    751.5×
  189. 188Silao de la VictoriaGuanajuato, Mexico
    751.5×
  190. 190ClaytonNorth Carolina, United States
    751.5×
  191. 190FayettevilleNorth Carolina, United States
    751.5×
  192. 190GreensboroNorth Carolina, United States
    751.5×
  193. 193Apple ValleyMinnesota, United States
    751.5×
  194. 193TorontoOntario, Canada
    751.5×
  195. 193Trois-RivièresQuebec, Canada
    751.5×
  196. 196Toms RiverNew Jersey, United States
    741.4×
  197. 196SaskatoonSaskatchewan, Canada
    741.4×
  198. 198RoanokeVirginia, United States
    741.4×
  199. 198MinneapolisMinnesota, United States
    741.4×
  200. 200GaryIndiana, United States
    741.4×

Top 200 of 1,375 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 1, 2023, smogrank.com/history/2023-07-01 (accessed 2 Oct 2026).

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