SmogRank / History / July 24, 2024

Most polluted cities on July 24, 2024

2,274 cities ranked by their average PM2.5 over the day; the worst was Calgary, Canada, at 139.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 24, 2024. All episodes.

← Calgary 139.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 24, 2024, 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. 1CalgaryAlberta, Canada
    2159.3×
  2. 2Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    2129.1×
  3. 3NacimientoBiobio, Chile
    1887.2×
  4. 4HualquiBiobio, Chile
    1867.1×
  5. 5HualpénBiobio, Chile
    1867.0×
  6. 6CuricóMaule Region, Chile
    1826.7×
  7. 7Lahorelow-cost sensorsPunjab, Pakistan
    1756.0×
  8. 8Fort McMurrayAlberta, Canada
    1705.5×
  9. 9RancaguaO'Higgins Region, Chile
    1634.8×
  10. 10CuranilahueBiobio, Chile
    1634.8×
  11. 11TalcaMaule Region, Chile
    1584.4×
  12. 12RengoO'Higgins Region, Chile
    1564.2×
  13. 13EdmontonAlberta, Canada
    1554.1×
  14. 14ChillánÑuble, Chile
    1483.6×
  15. 15TalaganteSantiago Metropolitan, Chile
    1473.6×
  16. 16BendOregon, United States
    1443.5×
  17. 17Kampalalow-cost sensorsCentral Region, Uganda
    1443.5×
  18. 18SantiagoSantiago Metropolitan, Chile
    1393.4×
  19. 19Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1393.4×
  20. 20Prince AlbertSaskatchewan, Canada
    1383.4×
  21. 21Red DeerAlberta, Canada
    1373.3×
  22. 22TalcahuanoBiobio, Chile
    1343.3×
  23. 23Santa Anita - Los FicusLima region, Peru
    1333.2×
  24. 24ManamaManama, Bahrain
    1323.2×
  25. 25DelhiDelhi, India
    1313.2×
  26. 26SaskatoonSaskatchewan, Canada
    1273.1×
  27. 27CoronelBiobio, Chile
    1253.0×
  28. 28ValdiviaLos Ríos Region, Chile
    1233.0×
  29. 29TemucoAraucania, Chile
    1212.9×
  30. 30CoyhaiqueAysén, Chile
    1202.9×
  31. 30ChiguayanteBiobio, Chile
    1202.9×
  32. 32Los ÁngelesBiobio, Chile
    1192.9×
  33. 33NampaIdaho, United States
    1192.8×
  34. 34AirdrieAlberta, Canada
    1172.8×
  35. 35ConcepciónBiobio, Chile
    1132.7×
  36. 36San Pedro de la PazBiobio, Chile
    1102.6×
  37. 37ReginaSaskatchewan, Canada
    1072.5×
  38. 38ToméBiobio, Chile
    1072.5×
  39. 39QuillotaValparaiso, Chile
    1062.5×
  40. 40St. AlbertAlberta, Canada
    1042.4×
  41. 41Puente AltoSantiago Metropolitan, Chile
    1032.4×
  42. 42VillarricaAraucania, Chile
    1012.4×
  43. 43El PasoTexas, United States
    992.3×
  44. 44La UniónLos Ríos Region, Chile
    982.3×
  45. 45RedmondOregon, United States
    982.3×
  46. 46QuilpuéValparaiso, Chile
    982.3×
  47. 46OsornoLos Lagos Region, Chile
    982.3×
  48. 48Puerto AysénAysén, Chile
    972.3×
  49. 49Rapid CitySouth Dakota, United States
    972.2×
  50. 50Addis AbabaAddis Ababa, Ethiopia
    962.2×
  51. 51Karachilow-cost sensorsSindh, Pakistan
    952.2×
  52. 51Sherwood ParkAlberta, Canada
    952.2×
  53. 53Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    952.2×
  54. 54BeijingBeijing, China
    932.1×
  55. 55ThorntonColorado, United States
    932.1×
  56. 56AntananarivoAnalamanga, Madagascar
    932.1×
  57. 56Islamabadlow-cost sensorsIslamabad, Pakistan
    932.1×
  58. 58Asunciónlow-cost sensorsAsuncion, Paraguay
    922.1×
  59. 59LimaLima Province, Peru
    922.1×
  60. 60Jurong WestSingapore
    902.0×
  61. 61Jacobo HunterArequipa, Peru
    902.0×
  62. 62MeridianIdaho, United States
    902.0×
  63. 63AshgabatAshgabat, Turkmenistan
    902.0×
  64. 64LewistonIdaho, United States
    892.0×
  65. 65Ang Mo Kio New TownSingapore
    892.0×
  66. 66MaputoMaputo City, Mozambique
    881.9×
  67. 67GilletteWyoming, United States
    871.9×
  68. 68RangioraCanterbury, New Zealand
    861.9×
  69. 69LongmontColorado, United States
    851.8×
  70. 69Great FallsMontana, United States
    851.8×
  71. 71ShenyangLiaoning, China
    851.8×
  72. 71OremUtah, United States
    851.8×
  73. 73Colorado SpringsColorado, United States
    841.8×
  74. 74QuinteroValparaiso, Chile
    831.8×
  75. 75AricaArica y Parinacota Region, Chile
    831.8×
  76. 75Ken CarylColorado, United States
    831.8×
  77. 77Puerto VarasLos Lagos Region, Chile
    831.7×
  78. 78MissoulaMontana, United States
    821.7×
  79. 79Dhakalow-cost sensorsDhaka Division, Bangladesh
    811.7×
  80. 80TolucaMéxico, Mexico
    801.7×
  81. 80Medicine HatAlberta, Canada
    801.7×
  82. 82LotaBiobio, Chile
    801.7×
  83. 83Swift CurrentSaskatchewan, Canada
    801.6×
  84. 84BoiseIdaho, United States
    801.6×
  85. 85Fort CollinsColorado, United States
    801.6×
  86. 86CheyenneWyoming, United States
    791.6×
  87. 87Puerto MonttLos Lagos Region, Chile
    791.6×
  88. 88ConcónValparaiso, Chile
    791.6×
  89. 89GreeleyColorado, United States
    791.6×
  90. 90BadgerAlaska, United States
    781.6×
  91. 91BucharestBucharest, Romania
    771.5×
  92. 92ŌtsukiYamanashi, Japan
    771.5×
  93. 93UžiceCentral Serbia, Serbia
    761.5×
  94. 93ChocopeLa Libertad, Peru
    761.5×
  95. 95BillingsMontana, United States
    761.5×
  96. 96Ulu BedokSingapore
    751.5×
  97. 96Guatemala CityGuatemala, Guatemala
    751.5×
  98. 96Viña del MarValparaiso, Chile
    751.5×
  99. 96DenverColorado, United States
    751.5×
  100. 96MoscowIdaho, United States
    751.5×
  101. 96San Francisco De BorjaLima region, Peru
    751.5×
  102. 102LittletonColorado, United States
    751.5×
  103. 103DushanbeDushanbe, Tajikistan
    751.5×
  104. 104Villa Poeta José Gálvez BarrenecheaLima region, Peru
    741.4×
  105. 105AmarilloTexas, United States
    741.4×
  106. 106HelenaMontana, United States
    741.4×
  107. 107FairbanksAlaska, United States
    741.4×
  108. 108ZgierzŁódź Voivodeship, Poland
    731.4×
  109. 108PeoriaIllinois, United States
    731.4×
  110. 110AntofagastaAntofagasta, Chile
    731.4×
  111. 111Hat YaiSongkhla, Thailand
    721.4×
  112. 111Queenstown Estatelow-cost sensorsSingapore
    721.4×
  113. 113SatunSatun, Thailand
    721.4×
  114. 113MillcreekUtah, United States
    721.4×
  115. 115CopiapóAtacama, Chile
    721.3×
  116. 116YalaYala, Thailand
    711.3×
  117. 117Columbialow-cost sensorsMissouri, United States
    711.3×
  118. 118NogalesSonora, Mexico
    711.3×
  119. 119AshlandOregon, United States
    711.3×
  120. 120Şabāḩ as SālimMubārak al Kabīr, Kuwait
    711.3×
  121. 120YauriCuzco Department, Peru
    711.3×
  122. 122PhuketPhuket, Thailand
    711.3×
  123. 123NarathiwatNarathiwat, Thailand
    701.3×
  124. 123AiharaKanagawa, Japan
    701.3×
  125. 123Nepeanlow-cost sensorsOntario, Canada
    701.3×
  126. 126TrangTrang, Thailand
    701.3×
  127. 126WoodlandsSingapore
    701.3×
  128. 128Novi PazarCentral Serbia, Serbia
    701.3×
  129. 128Surat ThaniSurat Thani, Thailand
    701.3×
  130. 128Le LamentinMartinique, Martinique
    701.3×
  131. 128BozemanMontana, United States
    701.3×
  132. 132KolkataWest Bengal, India
    701.3×
  133. 132BetongYala, Thailand
    701.3×
  134. 132MinamirinkanKanagawa, Japan
    701.3×
  135. 135KraljevoCentral Serbia, Serbia
    701.3×
  136. 135Fort-de-FranceMartinique, Martinique
    701.3×
  137. 137BitolaBitola, North Macedonia
    691.3×
  138. 137BoulderColorado, United States
    691.3×
  139. 139Les AbymesGuadeloupe, Guadeloupe
    691.3×
  140. 139Sunland ParkNew Mexico, United States
    691.3×
  141. 139LaramieWyoming, United States
    691.3×
  142. 142CallaoCallao, Peru
    691.3×
  143. 142WestervilleOhio, United States
    691.3×
  144. 142West JordanUtah, United States
    691.3×
  145. 145SpringdaleArkansas, United States
    691.2×
  146. 145North OgdenUtah, United States
    691.2×
  147. 147Nakhon Si ThammaratNakhon Si Thammarat, Thailand
    691.2×
  148. 147Twin FallsIdaho, United States
    691.2×
  149. 147AyaseKanagawa, Japan
    691.2×
  150. 150NanNan, Thailand
    691.2×
  151. 151BountifulUtah, United States
    681.2×
  152. 152RabinalBaja Verapaz, Guatemala
    681.2×
  153. 153ĆuprijaCentral Serbia, Serbia
    681.2×
  154. 154VallettaValletta, Malta
    681.2×
  155. 155KitaibarakiIbaraki, Japan
    681.2×
  156. 155BloomingtonIllinois, United States
    681.2×
  157. 157KanchanaburiKanchanaburi, Thailand
    671.2×
  158. 157CoquimboCoquimbo Region, Chile
    671.2×
  159. 159GostivarGostivar, North Macedonia
    671.2×
  160. 159Grand IslandNebraska, United States
    671.2×
  161. 161ŌmeTokyo, Japan
    671.2×
  162. 161OregonOhio, United States
    671.2×
  163. 163SunnysideWashington, United States
    671.2×
  164. 163LethbridgeAlberta, Canada
    671.2×
  165. 165ColumbusOhio, United States
    671.2×
  166. 165Dodge CityKansas, United States
    671.2×
  167. 165Salt Lake CityUtah, United States
    671.2×
  168. 165PullmanWashington, United States
    671.2×
  169. 165YakimaWashington, United States
    671.2×
  170. 170Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    661.2×
  171. 170Kathmandulow-cost sensorsBagmati Province, Nepal
    661.2×
  172. 170Bang NaBangkok, Thailand
    661.2×
  173. 170AltamontOregon, United States
    661.2×
  174. 174LazarevacCentral Serbia, Serbia
    661.2×
  175. 174WatertownSouth Dakota, United States
    661.2×
  176. 176Falconara MarittimaThe Marches, Italy
    661.1×
  177. 176Le RobertMartinique, Martinique
    661.1×
  178. 178Coeur d'AleneIdaho, United States
    661.1×
  179. 178SheridanWyoming, United States
    661.1×
  180. 178YufuOita, Japan
    661.1×
  181. 181ŻabbarĦaż-Żabbar, Malta
    651.1×
  182. 181East Saint LouisIllinois, United States
    651.1×
  183. 181MuncieIndiana, United States
    651.1×
  184. 181PendletonOregon, United States
    651.1×
  185. 185AtsugiKanagawa, Japan
    651.1×
  186. 185AkishimaTokyo, Japan
    651.1×
  187. 187KasamaIbaraki, Japan
    651.1×
  188. 187IndianapolisIndiana, United States
    651.1×
  189. 187KokomoIndiana, United States
    651.1×
  190. 190TocopillaAntofagasta, Chile
    651.1×
  191. 190BerkeleyCalifornia, United States
    651.1×
  192. 190PocatelloIdaho, United States
    651.1×
  193. 193MinawaKanagawa, Japan
    651.1×
  194. 193AberdeenSouth Dakota, United States
    651.1×
  195. 193HobbsNew Mexico, United States
    651.1×
  196. 193Walla WallaWashington, United States
    651.1×
  197. 197ŌitaOita, Japan
    641.1×
  198. 197HitachiIbaraki, Japan
    641.1×
  199. 197ChristchurchCanterbury, New Zealand
    641.1×
  200. 197TooeleUtah, United States
    641.1×

Top 200 of 2,274 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

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, July 24, 2024, smogrank.com/history/2024-07-24 (accessed 3 Oct 2026).

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