SmogRank / History / June 30, 2023

Most polluted cities on June 30, 2023

1,344 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 138.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during June 30, 2023. All episodes.

← Coyhaique 138.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for June 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. 1CoyhaiqueAysén, Chile
    2139.2×
  2. 2NacimientoBiobio, Chile
    1978.0×
  3. 3LinaresMaule Region, Chile
    1947.8×
  4. 4San CarlosÑuble, Chile
    1897.3×
  5. 5Los ÁngelesBiobio, Chile
    1887.2×
  6. 6ChillánÑuble, Chile
    1826.7×
  7. 7HualpénBiobio, Chile
    1826.7×
  8. 8ScrantonPennsylvania, United States
    1776.2×
  9. 9BellevilleOntario, Canada
    1755.9×
  10. 10RochesterNew York, United States
    1745.9×
  11. 11TalcahuanoBiobio, Chile
    1725.7×
  12. 12TemucoAraucania, Chile
    1715.6×
  13. 12BuffaloNew York, United States
    1715.6×
  14. 14CheektowagaNew York, United States
    1695.4×
  15. 15SyracuseNew York, United States
    1685.3×
  16. 16PeterboroughOntario, Canada
    1675.2×
  17. 17BethlehemPennsylvania, United States
    1675.2×
  18. 18HamiltonOntario, Canada
    1675.2×
  19. 19BarrieOntario, Canada
    1675.2×
  20. 20KenmoreNew York, United States
    1675.2×
  21. 21HarrisburgPennsylvania, United States
    1665.1×
  22. 22AltoonaPennsylvania, United States
    1665.1×
  23. 22KingstonOntario, Canada
    1665.1×
  24. 24AllentownPennsylvania, United States
    1665.1×
  25. 25RancaguaO'Higgins Region, Chile
    1655.0×
  26. 26ReadingPennsylvania, United States
    1655.0×
  27. 27St. CatharinesOntario, Canada
    1645.0×
  28. 28LancasterPennsylvania, United States
    1634.9×
  29. 29LebanonPennsylvania, United States
    1634.8×
  30. 30OsornoLos Lagos Region, Chile
    1634.8×
  31. 31CarlislePennsylvania, United States
    1624.8×
  32. 32NewburghNew York, United States
    1624.7×
  33. 33State CollegePennsylvania, United States
    1624.7×
  34. 34CuricóMaule Region, Chile
    1624.7×
  35. 35OttawaOntario, Canada
    1614.6×
  36. 36CoronelBiobio, Chile
    1614.6×
  37. 37New BrunswickNew Jersey, United States
    1594.5×
  38. 38TalaganteSantiago Metropolitan, Chile
    1594.4×
  39. 39ElizabethNew Jersey, United States
    1584.4×
  40. 40YorkPennsylvania, United States
    1584.4×
  41. 41RengoO'Higgins Region, Chile
    1574.3×
  42. 42BensalemPennsylvania, United States
    1574.3×
  43. 43NewarkDelaware, United States
    1574.3×
  44. 43EwingNew Jersey, United States
    1574.3×
  45. 45CornwallOntario, Canada
    1574.3×
  46. 46TorontoOntario, Canada
    1574.3×
  47. 47CuranilahueBiobio, Chile
    1574.2×
  48. 47JohnstownPennsylvania, United States
    1574.2×
  49. 49EriePennsylvania, United States
    1564.2×
  50. 50LindenNew Jersey, United States
    1564.2×
  51. 51TrentonNew Jersey, United States
    1554.1×
  52. 52NorristownPennsylvania, United States
    1554.1×
  53. 53TalcaMaule Region, Chile
    1554.1×
  54. 54Puerto AysénAysén, Chile
    1544.0×
  55. 55BridgeportConnecticut, United States
    1544.0×
  56. 56SantiagoSantiago Metropolitan, Chile
    1544.0×
  57. 57PhiladelphiaPennsylvania, United States
    1543.9×
  58. 58HualquiBiobio, Chile
    1533.9×
  59. 59CharlottesvilleVirginia, United States
    1523.8×
  60. 60New York CityNew York, United States
    1523.8×
  61. 61New CityNew York, United States
    1523.8×
  62. 62HermitagePennsylvania, United States
    1523.8×
  63. 63ToméBiobio, Chile
    1523.8×
  64. 64PennsaukenNew Jersey, United States
    1493.7×
  65. 65WilkinsburgPennsylvania, United States
    1493.7×
  66. 66Jersey CityNew Jersey, United States
    1483.6×
  67. 67Bay CityMichigan, United States
    1463.6×
  68. 68AlbanyNew York, United States
    1463.6×
  69. 69PittsburghPennsylvania, United States
    1463.6×
  70. 70Hunt ValleyMaryland, United States
    1453.5×
  71. 71Fort LeeNew Jersey, United States
    1433.5×
  72. 71West MifflinPennsylvania, United States
    1433.5×
  73. 73ValdiviaLos Ríos Region, Chile
    1423.5×
  74. 74EdgewoodMaryland, United States
    1413.5×
  75. 75WilmingtonDelaware, United States
    1403.4×
  76. 75ElktonMaryland, United States
    1403.4×
  77. 77ChesterPennsylvania, United States
    1393.4×
  78. 78New HavenConnecticut, United States
    1393.4×
  79. 79YoungstownOhio, United States
    1383.4×
  80. 80KitchenerOntario, Canada
    1383.4×
  81. 81FlintMichigan, United States
    1373.3×
  82. 82Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    1363.3×
  83. 83UticaNew York, United States
    1353.3×
  84. 84BayonneNew Jersey, United States
    1353.3×
  85. 85WarrenOhio, United States
    1343.3×
  86. 85SarniaOntario, Canada
    1343.3×
  87. 87BaltimoreMaryland, United States
    1323.2×
  88. 88WaterburyConnecticut, United States
    1323.2×
  89. 89Port HuronMichigan, United States
    1313.2×
  90. 90DanburyConnecticut, United States
    1293.1×
  91. 91BearDelaware, United States
    1283.1×
  92. 91White PlainsNew York, United States
    1283.1×
  93. 93Rose HillVirginia, United States
    1283.1×
  94. 94LansingMichigan, United States
    1273.1×
  95. 95PittsfieldMassachusetts, United States
    1263.0×
  96. 96MontréalQuebec, Canada
    1263.0×
  97. 96St. ThomasOntario, Canada
    1263.0×
  98. 98HagerstownMaryland, United States
    1263.0×
  99. 99RoanokeVirginia, United States
    1253.0×
  100. 100CauquenesMaule Region, Chile
    1253.0×
  101. 100SpringfieldVirginia, United States
    1253.0×
  102. 102HempsteadNew York, United States
    1253.0×
  103. 103ConcepciónBiobio, Chile
    1243.0×
  104. 104HartfordConnecticut, United States
    1243.0×
  105. 104Greater SudburyOntario, Canada
    1243.0×
  106. 106YpsilantiMichigan, United States
    1222.9×
  107. 106HolbrookNew York, United States
    1222.9×
  108. 108ChiguayanteBiobio, Chile
    1222.9×
  109. 109GreenfieldMassachusetts, United States
    1212.9×
  110. 110DoverDelaware, United States
    1202.9×
  111. 111Toms RiverNew Jersey, United States
    1192.9×
  112. 112ScaggsvilleMaryland, United States
    1172.8×
  113. 113Winston-SalemNorth Carolina, United States
    1162.8×
  114. 114San Pedro de la PazBiobio, Chile
    1152.8×
  115. 115DorvalQuebec, Canada
    1152.7×
  116. 115North BayOntario, Canada
    1152.7×
  117. 117South VinelandNew Jersey, United States
    1132.7×
  118. 118Addis AbabaAddis Ababa, Ethiopia
    1132.7×
  119. 118DushanbeDushanbe, Tajikistan
    1132.7×
  120. 118Puerto VarasLos Lagos Region, Chile
    1132.7×
  121. 121RaleighNorth Carolina, United States
    1132.7×
  122. 121BrantfordOntario, Canada
    1132.7×
  123. 123MorrisvilleNorth Carolina, United States
    1132.7×
  124. 124RichmondVirginia, United States
    1122.7×
  125. 124McKeesportPennsylvania, United States
    1122.7×
  126. 126RedfordMichigan, United States
    1102.6×
  127. 127New LondonConnecticut, United States
    1092.6×
  128. 127Fort St. JohnBritish Columbia, Canada
    1092.6×
  129. 129North ChicopeeMassachusetts, United States
    1082.6×
  130. 130DearbornMichigan, United States
    1082.6×
  131. 131TrussvilleAlabama, United States
    1082.6×
  132. 131PleasantvilleNew Jersey, United States
    1082.6×
  133. 133WashingtonDistrict of Columbia, United States
    1072.5×
  134. 133TaylorMichigan, United States
    1072.5×
  135. 133SteubenvilleOhio, United States
    1072.5×
  136. 136SpringfieldMassachusetts, United States
    1072.5×
  137. 136Candler-McAfeeGeorgia, United States
    1072.5×
  138. 138WaukeshaWisconsin, United States
    1072.5×
  139. 139La UniónLos Ríos Region, Chile
    1052.5×
  140. 140DurhamNorth Carolina, United States
    1052.5×
  141. 141CantonOhio, United States
    1052.5×
  142. 142ClemmonsNorth Carolina, United States
    1052.5×
  143. 142MilwaukeeWisconsin, United States
    1052.5×
  144. 144ZionIllinois, United States
    1042.5×
  145. 145South LaurelMaryland, United States
    1042.5×
  146. 146KingsportTennessee, United States
    1042.4×
  147. 147BrossardQuebec, Canada
    1032.4×
  148. 148HueytownAlabama, United States
    1022.4×
  149. 148Weirton HeightsWest Virginia, United States
    1022.4×
  150. 150HollandMichigan, United States
    1012.4×
  151. 150ReginaSaskatchewan, Canada
    1012.4×
  152. 152DetroitMichigan, United States
    1012.4×
  153. 153ClevelandOhio, United States
    1012.4×
  154. 154LondonOntario, Canada
    1002.4×
  155. 155Shaker HeightsOhio, United States
    1002.3×
  156. 156East HamptonVirginia, United States
    992.3×
  157. 156Lincoln ParkMichigan, United States
    992.3×
  158. 158LawrencevilleGeorgia, United States
    992.3×
  159. 158PainesvilleOhio, United States
    992.3×
  160. 160GreensboroNorth Carolina, United States
    992.3×
  161. 161QuillotaValparaiso, Chile
    982.3×
  162. 161RockvilleMaryland, United States
    982.3×
  163. 161HopewellVirginia, United States
    982.3×
  164. 164AtlantaGeorgia, United States
    972.3×
  165. 164RockfordIllinois, United States
    972.3×
  166. 166LexingtonNorth Carolina, United States
    972.2×
  167. 167ChathamOntario, Canada
    962.2×
  168. 168GainesvilleGeorgia, United States
    962.2×
  169. 168AkronOhio, United States
    962.2×
  170. 170MedinaOhio, United States
    962.2×
  171. 171CaryIllinois, United States
    952.2×
  172. 172FlorenceSouth Carolina, United States
    942.2×
  173. 172South BendIndiana, United States
    942.2×
  174. 174La SerenaCoquimbo Region, Chile
    942.1×
  175. 174KalamazooMichigan, United States
    942.1×
  176. 176AntananarivoAnalamanga, Madagascar
    942.1×
  177. 176ShenyangLiaoning, China
    942.1×
  178. 176KadaňÚstí nad Labem Region, Czechia
    942.1×
  179. 176Roanoke RapidsNorth Carolina, United States
    942.1×
  180. 180Viña del MarValparaiso, Chile
    932.1×
  181. 180WorcesterMassachusetts, United States
    932.1×
  182. 182MaconGeorgia, United States
    932.1×
  183. 183LotaBiobio, Chile
    922.1×
  184. 183FayettevilleNorth Carolina, United States
    922.1×
  185. 185NairobiNairobi County, Kenya
    922.1×
  186. 185ChesapeakeVirginia, United States
    922.1×
  187. 185Fall RiverMassachusetts, United States
    922.1×
  188. 188PristinaPristina, Kosovo
    922.1×
  189. 188GranbyQuebec, Canada
    922.1×
  190. 190NorthbrookIllinois, United States
    922.1×
  191. 191QuinteroValparaiso, Chile
    922.1×
  192. 191Green BayWisconsin, United States
    922.1×
  193. 193HickoryNorth Carolina, United States
    912.1×
  194. 194JenisonMichigan, United States
    912.0×
  195. 195Puente AltoSantiago Metropolitan, Chile
    902.0×
  196. 196JakartaJakarta, Indonesia
    902.0×
  197. 196ClaytonNorth Carolina, United States
    902.0×
  198. 198CoquimboCoquimbo Region, Chile
    892.0×
  199. 199Puerto MonttLos Lagos Region, Chile
    892.0×
  200. 199ConcónValparaiso, Chile
    892.0×

Top 200 of 1,344 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, June 30, 2023, smogrank.com/history/2023-06-30 (accessed 2 Oct 2026).

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