SmogRank / History / June 29, 2023

Most polluted cities on June 29, 2023

1,260 cities ranked by their average PM2.5 over the day; the worst was Tha Bo, Thailand, at 477.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during June 29, 2023. All episodes.

← Tha Bo 477.0 µg/m³ 400 µg/m³15 WHO 24-hour guideline
Every city ranked for June 29, 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. 1Tha BoNong Khai, Thailand
    500+31.8×
  2. 2WilkinsburgPennsylvania, United States
    23910.9×
  3. 3CoyhaiqueAysén, Chile
    23910.9×
  4. 4CantonOhio, United States
    22810.2×
  5. 5PittsburghPennsylvania, United States
    22710.1×
  6. 6SteubenvilleOhio, United States
    2229.8×
  7. 7AltoonaPennsylvania, United States
    2129.1×
  8. 8MadisonWisconsin, United States
    2109.0×
  9. 9West MifflinPennsylvania, United States
    2028.4×
  10. 10Weirton HeightsWest Virginia, United States
    1998.3×
  11. 11JohnstownPennsylvania, United States
    1957.9×
  12. 12RockfordIllinois, United States
    1947.8×
  13. 12LansingMichigan, United States
    1947.8×
  14. 14McKeesportPennsylvania, United States
    1937.7×
  15. 15Iowa CityIowa, United States
    1917.5×
  16. 15KalamazooMichigan, United States
    1917.5×
  17. 17TaylorMichigan, United States
    1887.2×
  18. 17YpsilantiMichigan, United States
    1887.2×
  19. 19DublinOhio, United States
    1867.1×
  20. 20YoungstownOhio, United States
    1867.0×
  21. 21DearbornMichigan, United States
    1856.9×
  22. 21BellevilleOntario, Canada
    1856.9×
  23. 23Lincoln ParkMichigan, United States
    1846.9×
  24. 24DetroitMichigan, United States
    1836.7×
  25. 24GahannaOhio, United States
    1836.7×
  26. 26MedinaOhio, United States
    1826.7×
  27. 27WaukeshaWisconsin, United States
    1816.6×
  28. 28State CollegePennsylvania, United States
    1816.5×
  29. 29WarrenOhio, United States
    1816.5×
  30. 30AkronOhio, United States
    1796.4×
  31. 31HarrisburgPennsylvania, United States
    1796.4×
  32. 32BaltimoreMaryland, United States
    1786.3×
  33. 33ClintonIowa, United States
    1786.3×
  34. 34Rose HillVirginia, United States
    1776.2×
  35. 35CarlislePennsylvania, United States
    1776.2×
  36. 35South MilwaukeeWisconsin, United States
    1776.2×
  37. 37YorkPennsylvania, United States
    1776.2×
  38. 38HermitagePennsylvania, United States
    1776.2×
  39. 39LancasterPennsylvania, United States
    1776.1×
  40. 40ToledoOhio, United States
    1766.1×
  41. 41SpringfieldVirginia, United States
    1756.0×
  42. 42JenisonMichigan, United States
    1756.0×
  43. 43Grand RapidsMichigan, United States
    1756.0×
  44. 44HualpénBiobio, Chile
    1755.9×
  45. 45MilwaukeeWisconsin, United States
    1745.9×
  46. 46Green BayWisconsin, United States
    1745.9×
  47. 47ScaggsvilleMaryland, United States
    1745.8×
  48. 47SyracuseNew York, United States
    1745.8×
  49. 49Bay CityMichigan, United States
    1735.8×
  50. 50MuscatineIowa, United States
    1735.8×
  51. 51RedfordMichigan, United States
    1735.8×
  52. 52FlintMichigan, United States
    1735.8×
  53. 53NewarkDelaware, United States
    1735.8×
  54. 54MolineIllinois, United States
    1735.8×
  55. 55LimaOhio, United States
    1725.7×
  56. 56WilmingtonDelaware, United States
    1725.7×
  57. 56LebanonPennsylvania, United States
    1725.7×
  58. 58ScrantonPennsylvania, United States
    1725.7×
  59. 59HagerstownMaryland, United States
    1715.6×
  60. 60South LaurelMaryland, United States
    1715.6×
  61. 60ReadingPennsylvania, United States
    1715.6×
  62. 62BearDelaware, United States
    1715.6×
  63. 63ClevelandOhio, United States
    1715.6×
  64. 64NacimientoBiobio, Chile
    1715.6×
  65. 64ChesterPennsylvania, United States
    1715.6×
  66. 66EdgewoodMaryland, United States
    1715.6×
  67. 67ElktonMaryland, United States
    1705.5×
  68. 68ChathamOntario, Canada
    1705.5×
  69. 69Hunt ValleyMaryland, United States
    1705.5×
  70. 70Puerto VarasLos Lagos Region, Chile
    1695.4×
  71. 71CaryIllinois, United States
    1695.4×
  72. 72AppletonWisconsin, United States
    1685.4×
  73. 73WashingtonDistrict of Columbia, United States
    1685.3×
  74. 73CharlottesvilleVirginia, United States
    1685.3×
  75. 75DavenportIowa, United States
    1675.3×
  76. 76BethlehemPennsylvania, United States
    1675.2×
  77. 77RochesterNew York, United States
    1665.2×
  78. 78KingstonOntario, Canada
    1665.1×
  79. 79HollandMichigan, United States
    1665.1×
  80. 80AllentownPennsylvania, United States
    1665.1×
  81. 81RockvilleMaryland, United States
    1645.0×
  82. 82Shaker HeightsOhio, United States
    1644.9×
  83. 83NorthbrookIllinois, United States
    1644.9×
  84. 84NorristownPennsylvania, United States
    1644.9×
  85. 85LinaresMaule Region, Chile
    1634.9×
  86. 86IndianapolisIndiana, United States
    1634.9×
  87. 87PhiladelphiaPennsylvania, United States
    1634.8×
  88. 88South BendIndiana, United States
    1624.7×
  89. 89PennsaukenNew Jersey, United States
    1624.7×
  90. 89NapervilleIllinois, United States
    1624.7×
  91. 91BensalemPennsylvania, United States
    1614.7×
  92. 92SantiagoSantiago Metropolitan, Chile
    1614.6×
  93. 93DoverDelaware, United States
    1604.6×
  94. 94Des PlainesIllinois, United States
    1604.6×
  95. 95Port HuronMichigan, United States
    1604.6×
  96. 96TalcahuanoBiobio, Chile
    1604.6×
  97. 97Los ÁngelesBiobio, Chile
    1604.5×
  98. 98OttawaOntario, Canada
    1594.5×
  99. 99RichmondVirginia, United States
    1594.4×
  100. 99JolietIllinois, United States
    1594.4×
  101. 101RoanokeVirginia, United States
    1594.4×
  102. 102San CarlosÑuble, Chile
    1584.4×
  103. 103SpringfieldOhio, United States
    1584.4×
  104. 104ZionIllinois, United States
    1584.3×
  105. 104SarniaOntario, Canada
    1584.3×
  106. 106UticaNew York, United States
    1574.2×
  107. 106La CrosseWisconsin, United States
    1574.2×
  108. 108AshlandKentucky, United States
    1564.2×
  109. 109WaterlooIowa, United States
    1564.2×
  110. 110DaytonOhio, United States
    1564.2×
  111. 111OsornoLos Lagos Region, Chile
    1564.1×
  112. 112RancaguaO'Higgins Region, Chile
    1554.1×
  113. 113ChillánÑuble, Chile
    1554.1×
  114. 114Winston-SalemNorth Carolina, United States
    1554.0×
  115. 115TalaganteSantiago Metropolitan, Chile
    1533.9×
  116. 116TemucoAraucania, Chile
    1533.9×
  117. 117NorwoodOhio, United States
    1533.9×
  118. 118MiddletownOhio, United States
    1533.9×
  119. 119ElkhartIndiana, United States
    1533.9×
  120. 120CuricóMaule Region, Chile
    1533.9×
  121. 121CincinnatiOhio, United States
    1523.8×
  122. 122Franklin ParkIllinois, United States
    1523.8×
  123. 122St. CatharinesOntario, Canada
    1523.8×
  124. 124Calumet CityIllinois, United States
    1523.8×
  125. 125RengoO'Higgins Region, Chile
    1513.7×
  126. 126HopewellVirginia, United States
    1513.7×
  127. 127AndersonIndiana, United States
    1503.7×
  128. 128CoronelBiobio, Chile
    1503.7×
  129. 128MasonOhio, United States
    1503.7×
  130. 130Puerto MonttLos Lagos Region, Chile
    1463.6×
  131. 131East ChicagoIndiana, United States
    1453.6×
  132. 132HammondIndiana, United States
    1453.5×
  133. 133ChicagoIllinois, United States
    1443.5×
  134. 134Fort ThomasKentucky, United States
    1443.5×
  135. 135CuranilahueBiobio, Chile
    1443.5×
  136. 135PeterboroughOntario, Canada
    1443.5×
  137. 137ColumbusIndiana, United States
    1423.5×
  138. 138White OakOhio, United States
    1413.5×
  139. 139LebanonOhio, United States
    1413.4×
  140. 140South VinelandNew Jersey, United States
    1403.4×
  141. 141ChattanoogaTennessee, United States
    1393.4×
  142. 142FishersIndiana, United States
    1393.4×
  143. 143ToméBiobio, Chile
    1383.4×
  144. 144KnoxvilleTennessee, United States
    1373.3×
  145. 144KokomoIndiana, United States
    1373.3×
  146. 146PainesvilleOhio, United States
    1373.3×
  147. 147PortageIndiana, United States
    1363.3×
  148. 148TrentonNew Jersey, United States
    1353.3×
  149. 149Lexington-FayetteKentucky, United States
    1353.3×
  150. 149ClemmonsNorth Carolina, United States
    1353.3×
  151. 151Puerto AysénAysén, Chile
    1353.3×
  152. 152TlaquepaqueJalisco, Mexico
    1343.3×
  153. 152LafayetteIndiana, United States
    1343.3×
  154. 154CornwallOntario, Canada
    1343.3×
  155. 155GreensboroNorth Carolina, United States
    1333.2×
  156. 156HualquiBiobio, Chile
    1323.2×
  157. 156Roanoke RapidsNorth Carolina, United States
    1323.2×
  158. 158MorrisvilleNorth Carolina, United States
    1313.2×
  159. 159East RidgeTennessee, United States
    1313.2×
  160. 160KigaliKigali, Rwanda
    1303.2×
  161. 161JeffersonvilleIndiana, United States
    1303.2×
  162. 161AnkenyIowa, United States
    1303.2×
  163. 161New BrunswickNew Jersey, United States
    1303.2×
  164. 164RaleighNorth Carolina, United States
    1293.1×
  165. 165Puente AltoSantiago Metropolitan, Chile
    1273.1×
  166. 166JeffersontownKentucky, United States
    1273.1×
  167. 167GaryIndiana, United States
    1263.1×
  168. 168East HamptonVirginia, United States
    1263.0×
  169. 169Fort St. JohnBritish Columbia, Canada
    1253.0×
  170. 170EwingNew Jersey, United States
    1253.0×
  171. 171QuillotaValparaiso, Chile
    1243.0×
  172. 171LexingtonNorth Carolina, United States
    1243.0×
  173. 173GainesvilleGeorgia, United States
    1243.0×
  174. 174BloomingtonIndiana, United States
    1233.0×
  175. 175MaryvilleTennessee, United States
    1233.0×
  176. 176ValdiviaLos Ríos Region, Chile
    1222.9×
  177. 177DelhiDelhi, India
    1192.9×
  178. 178TalcaMaule Region, Chile
    1172.8×
  179. 178Saint MatthewsKentucky, United States
    1172.8×
  180. 180CauquenesMaule Region, Chile
    1172.8×
  181. 181CheektowagaNew York, United States
    1172.8×
  182. 182Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1172.8×
  183. 183KingsportTennessee, United States
    1172.8×
  184. 184La UniónLos Ríos Region, Chile
    1162.8×
  185. 184Des MoinesIowa, United States
    1162.8×
  186. 186Oak LawnIllinois, United States
    1152.7×
  187. 187KenmoreNew York, United States
    1152.7×
  188. 188BloomingtonIllinois, United States
    1142.7×
  189. 189LouisvilleKentucky, United States
    1142.7×
  190. 189AlbanyNew York, United States
    1142.7×
  191. 191LindenNew Jersey, United States
    1132.7×
  192. 192New AlbanyIndiana, United States
    1132.7×
  193. 193PleasantvilleNew Jersey, United States
    1132.7×
  194. 194ElizabethNew Jersey, United States
    1122.7×
  195. 194New CityNew York, United States
    1122.7×
  196. 196BuffaloNew York, United States
    1102.6×
  197. 197HickoryNorth Carolina, United States
    1092.6×
  198. 198DushanbeDushanbe, Tajikistan
    1082.6×
  199. 199San Pedro de la PazBiobio, Chile
    1082.5×
  200. 200NewburghNew York, United States
    1072.5×

Top 200 of 1,260 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 29, 2023, smogrank.com/history/2023-06-29 (accessed 2 Oct 2026).

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