SmogRank / History / August 4, 2024

Most polluted cities on August 4, 2024

2,216 cities ranked by their average PM2.5 over the day; the worst was Hualpén, Chile, at 106.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 4, 2024. All episodes.

← Hualpén 106.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 4, 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. 1HualpénBiobio, Chile
    1867.1×
  2. 2NacimientoBiobio, Chile
    1786.2×
  3. 3VillarricaAraucania, Chile
    1735.8×
  4. 4Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1725.7×
  5. 5Asunciónlow-cost sensorsAsuncion, Paraguay
    1604.6×
  6. 6Santa Anita - Los FicusLima region, Peru
    1574.3×
  7. 7ChillánÑuble, Chile
    1544.0×
  8. 8Prince AlbertSaskatchewan, Canada
    1523.8×
  9. 9TalcaMaule Region, Chile
    1503.7×
  10. 10TalcahuanoBiobio, Chile
    1483.6×
  11. 11DushanbeDushanbe, Tajikistan
    1413.4×
  12. 12RengoO'Higgins Region, Chile
    1383.4×
  13. 13CuricóMaule Region, Chile
    1363.3×
  14. 14CoyhaiqueAysén, Chile
    1333.2×
  15. 15Puerto AysénAysén, Chile
    1303.2×
  16. 16SantiagoSantiago Metropolitan, Chile
    1202.9×
  17. 17Kampalalow-cost sensorsCentral Region, Uganda
    1192.9×
  18. 18CoronelBiobio, Chile
    1172.8×
  19. 19CairoCairo, Egypt
    1172.8×
  20. 19TemucoAraucania, Chile
    1172.8×
  21. 19CauquenesMaule Region, Chile
    1172.8×
  22. 22AntananarivoAnalamanga, Madagascar
    1162.8×
  23. 23ChristchurchCanterbury, New Zealand
    1102.6×
  24. 24Grants PassOregon, United States
    1082.6×
  25. 25Dhakalow-cost sensorsDhaka Division, Bangladesh
    1072.5×
  26. 26BaghdadBaghdad, Iraq
    1072.5×
  27. 27Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1072.5×
  28. 28ManamaManama, Bahrain
    1062.5×
  29. 29Los ÁngelesBiobio, Chile
    1052.5×
  30. 30Lahorelow-cost sensorsPunjab, Pakistan
    1052.5×
  31. 31La UniónLos Ríos Region, Chile
    1052.5×
  32. 32HualquiBiobio, Chile
    1042.5×
  33. 33CuranilahueBiobio, Chile
    1022.4×
  34. 33ChiguayanteBiobio, Chile
    1022.4×
  35. 35LimaLima Province, Peru
    1022.4×
  36. 36JakartaJakarta, Indonesia
    1012.4×
  37. 37TalaganteSantiago Metropolitan, Chile
    992.3×
  38. 38RancaguaO'Higgins Region, Chile
    982.3×
  39. 39QuillotaValparaiso, Chile
    982.3×
  40. 40Puente AltoSantiago Metropolitan, Chile
    972.3×
  41. 41ToméBiobio, Chile
    972.2×
  42. 42San Francisco De BorjaLima region, Peru
    952.2×
  43. 43RangioraCanterbury, New Zealand
    942.1×
  44. 44ValdiviaLos Ríos Region, Chile
    912.1×
  45. 45SaikiOita, Japan
    912.0×
  46. 46Karachilow-cost sensorsSindh, Pakistan
    902.0×
  47. 47AshburtonCanterbury, New Zealand
    892.0×
  48. 48NobeokaMiyazaki, Japan
    881.9×
  49. 49QuilpuéValparaiso, Chile
    881.9×
  50. 50BeijingBeijing, China
    871.9×
  51. 50OsornoLos Lagos Region, Chile
    871.9×
  52. 52Şabāḩ as SālimMubārak al Kabīr, Kuwait
    871.9×
  53. 53TakanabeMiyazaki, Japan
    861.9×
  54. 53Nepeanlow-cost sensorsOntario, Canada
    861.9×
  55. 55MeridianIdaho, United States
    861.8×
  56. 56Puerto MonttLos Lagos Region, Chile
    851.8×
  57. 56CranbrookBritish Columbia, Canada
    851.8×
  58. 58KobayashiMiyazaki, Japan
    851.8×
  59. 59Addis AbabaAddis Ababa, Ethiopia
    841.8×
  60. 60ShintomiMiyazaki, Japan
    821.7×
  61. 61HyūgaMiyazaki, Japan
    821.7×
  62. 62HitoyoshiKumamoto, Japan
    811.7×
  63. 62CalgaryAlberta, Canada
    811.7×
  64. 62KamloopsBritish Columbia, Canada
    811.7×
  65. 65EisenGyeongsangbuk-do, South Korea
    811.7×
  66. 65MiyakonojōMiyazaki, Japan
    811.7×
  67. 67Villa Poeta José Gálvez BarrenecheaLima region, Peru
    801.7×
  68. 68QuinteroValparaiso, Chile
    801.7×
  69. 69BartlettTennessee, United States
    801.6×
  70. 69BoiseIdaho, United States
    801.6×
  71. 69EdmontonAlberta, Canada
    801.6×
  72. 72GuangzhouGuangdong, China
    791.6×
  73. 73AshgabatAshgabat, Turkmenistan
    791.6×
  74. 73SeoulSeoul, South Korea
    791.6×
  75. 73MarugameKagawa, Japan
    791.6×
  76. 76YeojuGyeonggi-do, South Korea
    781.6×
  77. 77St. ThomasOntario, Canada
    781.6×
  78. 78PohangGyeongsangbuk-do, South Korea
    781.6×
  79. 79Icheon-siGyeonggi-do, South Korea
    771.5×
  80. 79KanoyaKagoshima, Japan
    771.5×
  81. 79HanamGyeonggi-do, South Korea
    771.5×
  82. 82Puerto VarasLos Lagos Region, Chile
    771.5×
  83. 83HayangGyeongsangbuk-do, South Korea
    771.5×
  84. 83ŌtsukiYamanashi, Japan
    771.5×
  85. 83MiyazakiMiyazaki, Japan
    771.5×
  86. 86TangjinChungcheongnam-do, South Korea
    771.5×
  87. 86Grand RapidsMichigan, United States
    771.5×
  88. 88WŏnjuGangwon-do, South Korea
    761.5×
  89. 88TocopillaAntofagasta, Chile
    761.5×
  90. 90CallaoCallao, Peru
    761.5×
  91. 91LondonOntario, Canada
    761.5×
  92. 92SaskatoonSaskatchewan, Canada
    761.5×
  93. 93Guri-siGyeonggi-do, South Korea
    751.5×
  94. 93MimaTokushima, Japan
    751.5×
  95. 95VallettaValletta, Malta
    751.5×
  96. 96TongyeongGyeongsangnam-do, South Korea
    751.5×
  97. 97ChennaiTamil Nadu, India
    751.5×
  98. 98NonsanChungcheongnam-do, South Korea
    741.4×
  99. 98NamyangjuGyeonggi-do, South Korea
    741.4×
  100. 98AirdrieAlberta, Canada
    741.4×
  101. 101SōjaOkayama, Japan
    741.4×
  102. 101Viña del MarValparaiso, Chile
    741.4×
  103. 101NampaIdaho, United States
    741.4×
  104. 104HanoiHanoi, Vietnam
    741.4×
  105. 104KashiwaraNara, Japan
    741.4×
  106. 104GwangmyeongGyeonggi-do, South Korea
    741.4×
  107. 104KirishimaKagoshima, Japan
    741.4×
  108. 108KasaokaOkayama, Japan
    741.4×
  109. 109Bang NaBangkok, Thailand
    741.4×
  110. 109AnanTokushima, Japan
    741.4×
  111. 109ŻabbarĦaż-Żabbar, Malta
    741.4×
  112. 112YawatahamaEhime, Japan
    741.4×
  113. 113UlsanUlsan, South Korea
    731.4×
  114. 113IyoEhime, Japan
    731.4×
  115. 115WyomingMichigan, United States
    731.4×
  116. 116KwangyangJeollanam-do, South Korea
    731.4×
  117. 116ChungjuNorth Chungcheong, South Korea
    731.4×
  118. 116MatsuyamaEhime, Japan
    731.4×
  119. 116ImabariEhime, Japan
    731.4×
  120. 116Coeur d'AleneIdaho, United States
    731.4×
  121. 121IndianapolisIndiana, United States
    731.4×
  122. 121LouisvilleKentucky, United States
    731.4×
  123. 123GyeongjuGyeongsangbuk-do, South Korea
    721.4×
  124. 123KochiKochi, Japan
    721.4×
  125. 123DublinOhio, United States
    721.4×
  126. 126UkihaFukuoka, Japan
    721.4×
  127. 127NichinanMiyazaki, Japan
    721.3×
  128. 127NakatsuOita, Japan
    721.3×
  129. 127NaesŏGyeongsangnam-do, South Korea
    721.3×
  130. 130YesanChungcheongnam-do, South Korea
    711.3×
  131. 130Ganghwa-gunIncheon, South Korea
    711.3×
  132. 130ZentsujichóKagawa, Japan
    711.3×
  133. 130TamanoOkayama, Japan
    711.3×
  134. 130IwataShizuoka, Japan
    711.3×
  135. 130HitaOita, Japan
    711.3×
  136. 130MissionTexas, United States
    711.3×
  137. 137IkedachōTokushima, Japan
    711.3×
  138. 138IncheonIncheon, South Korea
    711.3×
  139. 138KofuYamanashi, Japan
    711.3×
  140. 138MedfordOregon, United States
    711.3×
  141. 141AthensAttica, Greece
    711.3×
  142. 141AsprópyrgosAttica, Greece
    711.3×
  143. 141NagahamaShiga, Japan
    711.3×
  144. 144Spokane ValleyWashington, United States
    711.3×
  145. 145Kashihara-shiNara, Japan
    701.3×
  146. 145ConroeTexas, United States
    701.3×
  147. 145JenisonMichigan, United States
    701.3×
  148. 145SarniaOntario, Canada
    701.3×
  149. 145YoshinogawaTokushima, Japan
    701.3×
  150. 150Great FallsMontana, United States
    701.3×
  151. 150Kawachi-NaganoOsaka, Japan
    701.3×
  152. 152SakuNagano, Japan
    701.3×
  153. 152MostaIl-Mosta, Malta
    701.3×
  154. 152CoquimboCoquimbo Region, Chile
    701.3×
  155. 152ConcónValparaiso, Chile
    701.3×
  156. 156ChangwonGyeongsangnam-do, South Korea
    701.3×
  157. 156Nara-shiNara, Japan
    701.3×
  158. 156ShikokuchūōEhime, Japan
    701.3×
  159. 159NeietsuGangwon-do, South Korea
    691.3×
  160. 159OsanGyeonggi-do, South Korea
    691.3×
  161. 159Kan’onjichōKagawa, Japan
    691.3×
  162. 159Port HuronMichigan, United States
    691.3×
  163. 163ChangnyeongGyeongsangnam-do, South Korea
    691.3×
  164. 164PyeongtaekGyeonggi-do, South Korea
    691.3×
  165. 164ŌzuKumamoto, Japan
    691.3×
  166. 164IzumiOsaka, Japan
    691.3×
  167. 164GifuGifu, Japan
    691.3×
  168. 164UngsangGyeongsangnam-do, South Korea
    691.3×
  169. 164MuncieIndiana, United States
    691.3×
  170. 164DearbornMichigan, United States
    691.3×
  171. 164SpokaneWashington, United States
    691.3×
  172. 164BrantfordOntario, Canada
    691.3×
  173. 164Prince GeorgeBritish Columbia, Canada
    691.3×
  174. 164HiragiKagawa, Japan
    691.3×
  175. 175SuwonGyeonggi-do, South Korea
    691.2×
  176. 175GumiGyeongsangbuk-do, South Korea
    691.2×
  177. 175JungpyongNorth Chungcheong, South Korea
    691.2×
  178. 175ŌitaOita, Japan
    691.2×
  179. 179SeonghwanChungcheongnam-do, South Korea
    691.2×
  180. 179UsukiOita, Japan
    691.2×
  181. 179MiddletownOhio, United States
    691.2×
  182. 179KitchenerOntario, Canada
    691.2×
  183. 183WaegwanGyeongsangbuk-do, South Korea
    691.2×
  184. 183MinamataKumamoto, Japan
    691.2×
  185. 183West MemphisArkansas, United States
    691.2×
  186. 183SunnysideWashington, United States
    691.2×
  187. 187GoseongGyeongsangnam-do, South Korea
    681.2×
  188. 187KurumeFukuoka, Japan
    681.2×
  189. 187IkomaNara, Japan
    681.2×
  190. 187PubalGyeonggi-do, South Korea
    681.2×
  191. 187RadomskoŁódź Voivodeship, Poland
    681.2×
  192. 192Goyang-siGyeonggi-do, South Korea
    681.2×
  193. 192SaijōEhime, Japan
    681.2×
  194. 192AndersonIndiana, United States
    681.2×
  195. 192Red DeerAlberta, Canada
    681.2×
  196. 196TsurusakiOita, Japan
    681.2×
  197. 196TsukumiuraOita, Japan
    681.2×
  198. 196TakinomiyaKagawa, Japan
    681.2×
  199. 196NiihamaEhime, Japan
    681.2×
  200. 196IwadeWakayama, Japan
    681.2×

Top 200 of 2,216 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, August 4, 2024, smogrank.com/history/2024-08-04 (accessed 3 Oct 2026).

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