SmogRank / History / August 20, 2024

Most polluted cities on August 20, 2024

1,754 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 137.5 µg/m³. Each city's own local calendar day.

Bad-air episodes during August 20, 2024. All episodes.

← Coyhaique 137.5 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for August 20, 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. 1CoyhaiqueAysén, Chile
    2139.2×
  2. 2Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1846.9×
  3. 3HualpénBiobio, Chile
    1786.3×
  4. 4TalcahuanoBiobio, Chile
    1766.0×
  5. 5NacimientoBiobio, Chile
    1725.7×
  6. 6VillarricaAraucania, Chile
    1695.4×
  7. 7Santa Anita - Los FicusLima region, Peru
    1685.3×
  8. 8Los ÁngelesBiobio, Chile
    1644.9×
  9. 9CuranilahueBiobio, Chile
    1624.8×
  10. 10OsornoLos Lagos Region, Chile
    1624.7×
  11. 11TalcaMaule Region, Chile
    1614.6×
  12. 12ValdiviaLos Ríos Region, Chile
    1594.5×
  13. 13ChillánÑuble, Chile
    1564.2×
  14. 14DushanbeDushanbe, Tajikistan
    1533.9×
  15. 14JakartaJakarta, Indonesia
    1533.9×
  16. 16Puerto VarasLos Lagos Region, Chile
    1483.6×
  17. 17TemucoAraucania, Chile
    1433.5×
  18. 18La UniónLos Ríos Region, Chile
    1403.4×
  19. 18CuricóMaule Region, Chile
    1403.4×
  20. 20HualquiBiobio, Chile
    1383.4×
  21. 21RancaguaO'Higgins Region, Chile
    1333.2×
  22. 22ChiguayanteBiobio, Chile
    1303.2×
  23. 23BaghdadBaghdad, Iraq
    1263.0×
  24. 24Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1222.9×
  25. 25RengoO'Higgins Region, Chile
    1222.9×
  26. 26Lahorelow-cost sensorsPunjab, Pakistan
    1182.8×
  27. 27CairoCairo, Egypt
    1172.8×
  28. 28KolkataWest Bengal, India
    1172.8×
  29. 29Puerto MonttLos Lagos Region, Chile
    1152.8×
  30. 30São PauloSão Paulo, Brazil
    1122.7×
  31. 31Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1102.6×
  32. 32Puente AltoSantiago Metropolitan, Chile
    1082.5×
  33. 33N'DjamenaN’Djaména, Chad
    1042.4×
  34. 34Puerto AysénAysén, Chile
    1022.4×
  35. 35ConcepciónBiobio, Chile
    1012.4×
  36. 36Dhakalow-cost sensorsDhaka Division, Bangladesh
    1002.4×
  37. 37Kampalalow-cost sensorsCentral Region, Uganda
    992.3×
  38. 38Iloilolow-cost sensorsWestern Visayas, Philippines
    992.3×
  39. 39San Pedro de la PazBiobio, Chile
    972.3×
  40. 40CoronelBiobio, Chile
    952.2×
  41. 41ToméBiobio, Chile
    942.2×
  42. 42UkiahCalifornia, United States
    932.1×
  43. 43Columbialow-cost sensorsMissouri, United States
    932.1×
  44. 44CauquenesMaule Region, Chile
    922.1×
  45. 45Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    922.1×
  46. 46Asunciónlow-cost sensorsAsuncion, Paraguay
    892.0×
  47. 47San Francisco De BorjaLima region, Peru
    871.9×
  48. 48Jacobo HunterArequipa, Peru
    851.8×
  49. 49CallaoCallao, Peru
    851.8×
  50. 50SantiagoSantiago Metropolitan, Chile
    841.8×
  51. 51Ganghwa-gunIncheon, South Korea
    841.8×
  52. 52LimaLima Province, Peru
    831.8×
  53. 53MasanGwangju, South Korea
    811.7×
  54. 54QuillotaValparaiso, Chile
    811.7×
  55. 55IncheonIncheon, South Korea
    801.6×
  56. 55TopekaKansas, United States
    801.6×
  57. 57AntofagastaAntofagasta, Chile
    791.6×
  58. 57Fort McMurrayAlberta, Canada
    791.6×
  59. 59Gimpo-siGyeonggi-do, South Korea
    791.6×
  60. 60OlatheKansas, United States
    781.6×
  61. 61Saint CloudMinnesota, United States
    771.6×
  62. 61West FargoNorth Dakota, United States
    771.6×
  63. 63Addis AbabaAddis Ababa, Ethiopia
    771.5×
  64. 64MaputoMaputo City, Mozambique
    761.5×
  65. 65TangjinChungcheongnam-do, South Korea
    761.5×
  66. 66YesanChungcheongnam-do, South Korea
    761.5×
  67. 67Ban Talat BuengChon Buri, Thailand
    751.5×
  68. 67Saint MichaelMinnesota, United States
    751.5×
  69. 69SpringdaleArkansas, United States
    751.5×
  70. 70YauriCuzco Department, Peru
    741.4×
  71. 70BurnsvilleMinnesota, United States
    741.4×
  72. 72DamyangJeollanam-do, South Korea
    741.4×
  73. 72SeonghwanChungcheongnam-do, South Korea
    741.4×
  74. 74Accralow-cost sensorsGreater Accra, Ghana
    741.4×
  75. 75Grand IslandNebraska, United States
    741.4×
  76. 76HyderabadTelangana, India
    741.4×
  77. 77Hwaseong-siGyeonggi-do, South Korea
    731.4×
  78. 77MankatoMinnesota, United States
    731.4×
  79. 77ShakopeeMinnesota, United States
    731.4×
  80. 80CheonanChungcheongnam-do, South Korea
    731.4×
  81. 81DerbyKansas, United States
    731.4×
  82. 82ChocopeLa Libertad, Peru
    721.4×
  83. 83Taesal-liChungcheongnam-do, South Korea
    721.4×
  84. 84AricaArica y Parinacota Region, Chile
    721.4×
  85. 85MukdahanMukdahan, Thailand
    721.3×
  86. 85Villa Poeta José Gálvez BarrenecheaLima region, Peru
    721.3×
  87. 87QuinteroValparaiso, Chile
    711.3×
  88. 88PyeongtaekGyeonggi-do, South Korea
    711.3×
  89. 88La SerenaCoquimbo Region, Chile
    711.3×
  90. 88MinneapolisMinnesota, United States
    711.3×
  91. 91GuangzhouGuangdong, China
    711.3×
  92. 91TulsaOklahoma, United States
    711.3×
  93. 91WatertownSouth Dakota, United States
    711.3×
  94. 94MumbaiMaharashtra, India
    701.3×
  95. 95TratTrat, Thailand
    701.3×
  96. 96GwangmyeongGyeonggi-do, South Korea
    701.3×
  97. 97Kansas CityKansas, United States
    701.3×
  98. 97HernandoMississippi, United States
    701.3×
  99. 99TocopillaAntofagasta, Chile
    701.3×
  100. 99RochesterMinnesota, United States
    701.3×
  101. 101JeongeupJeollabuk-do, South Korea
    691.3×
  102. 102Ponca CityOklahoma, United States
    691.3×
  103. 103RangioraCanterbury, New Zealand
    691.2×
  104. 104KalasinKalasin, Thailand
    691.2×
  105. 104SeoulSeoul, South Korea
    691.2×
  106. 104Ansan-siGyeonggi-do, South Korea
    691.2×
  107. 107Saint PaulMinnesota, United States
    681.2×
  108. 108QuilpuéValparaiso, Chile
    681.2×
  109. 108CalamaAntofagasta, Chile
    681.2×
  110. 110ShanghaiShanghai, China
    681.2×
  111. 110Apple ValleyMinnesota, United States
    681.2×
  112. 112TalaganteSantiago Metropolitan, Chile
    681.2×
  113. 113SeosanChungcheongnam-do, South Korea
    671.2×
  114. 114Goyang-siGyeonggi-do, South Korea
    671.2×
  115. 114CoquimboCoquimbo Region, Chile
    671.2×
  116. 114ConcónValparaiso, Chile
    671.2×
  117. 117NonsanChungcheongnam-do, South Korea
    671.2×
  118. 118Bucheon-siGyeonggi-do, South Korea
    671.2×
  119. 118Prince AlbertSaskatchewan, Canada
    671.2×
  120. 120BlaineMinnesota, United States
    661.2×
  121. 121NangenJeollabuk-do, South Korea
    661.1×
  122. 122SuwonGyeonggi-do, South Korea
    661.1×
  123. 123DelhiDelhi, India
    661.1×
  124. 123Abujalow-cost sensorsFCT, Nigeria
    661.1×
  125. 125Nakhon RatchasimaNakhon Ratchasima, Thailand
    651.1×
  126. 125AnkenyIowa, United States
    651.1×
  127. 127LublinLublin, Poland
    651.1×
  128. 127OkcheonNorth Chungcheong, South Korea
    651.1×
  129. 129HanamGyeonggi-do, South Korea
    651.1×
  130. 129Briton FerryWales, United Kingdom
    651.1×
  131. 129WaterlooIowa, United States
    651.1×
  132. 129YumaArizona, United States
    651.1×
  133. 133Guri-siGyeonggi-do, South Korea
    651.1×
  134. 133Anyang-siGyeonggi-do, South Korea
    651.1×
  135. 133Jastrzębie ZdrójSilesia, Poland
    651.1×
  136. 133West MemphisArkansas, United States
    651.1×
  137. 133OmahaNebraska, United States
    651.1×
  138. 138CanterburyEngland, United Kingdom
    641.1×
  139. 139Islamabadlow-cost sensorsIslamabad, Pakistan
    641.1×
  140. 140Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    641.1×
  141. 141BuanJeollabuk-do, South Korea
    641.1×
  142. 141ShenyangLiaoning, China
    641.1×
  143. 143ChennaiTamil Nadu, India
    641.1×
  144. 143Kathmandulow-cost sensorsBagmati Province, Nepal
    641.1×
  145. 143DallasTexas, United States
    641.1×
  146. 146MossØstfold, Norway
    631.1×
  147. 146Viña del MarValparaiso, Chile
    631.1×
  148. 146Little RockArkansas, United States
    631.1×
  149. 146Saint JosephMissouri, United States
    631.1×
  150. 150GwangjuGwangju, South Korea
    631.0×
  151. 150GunsanJeollabuk-do, South Korea
    631.0×
  152. 150HongseongChungcheongnam-do, South Korea
    631.0×
  153. 150PueblaPuebla, Mexico
    631.0×
  154. 150ChimboteAncash, Peru
    631.0×
  155. 150Lat KrabangBangkok, Thailand
    631.0×
  156. 150SejongSejong-si, South Korea
    631.0×
  157. 157Dodge CityKansas, United States
    631.0×
  158. 158IksanJeollabuk-do, South Korea
    631.0×
  159. 158Lagoslow-cost sensorsLagos, Nigeria
    631.0×
  160. 158Alto HospicioTarapacá, Chile
    631.0×
  161. 158BrookingsSouth Dakota, United States
    631.0×
  162. 158ChangnyeongGyeongsangnam-do, South Korea
    631.0×
  163. 163AsanChungcheongnam-do, South Korea
    631.0×
  164. 163SzczecinWest Pomerania, Poland
    631.0×
  165. 163LincolnNebraska, United States
    631.0×
  166. 163Canvey IslandEngland, United Kingdom
    631.0×
  167. 167BakuBaki, Azerbaijan
    631.0×
  168. 167Phra PradaengSamut Prakan, Thailand
    631.0×
  169. 167NamyangjuGyeonggi-do, South Korea
    631.0×
  170. 167Clacton-on-SeaEngland, United Kingdom
    631.0×
  171. 167Port ArthurTexas, United States
    631.0×
  172. 167AberdeenSouth Dakota, United States
    631.0×
  173. 173OlsztynWarmia-Masuria, Poland
    621.0×
  174. 173Amnat CharoenAmnat Charoen, Thailand
    621.0×
  175. 173GimcheonGyeongsangbuk-do, South Korea
    621.0×
  176. 173JacksonMississippi, United States
    621.0×
  177. 177Des MoinesIowa, United States
    621.0×
  178. 178BeijingBeijing, China
    621.0×
  179. 178MuanJeollanam-do, South Korea
    621.0×
  180. 178KimjeJeollabuk-do, South Korea
    621.0×
  181. 178JungpyongNorth Chungcheong, South Korea
    621.0×
  182. 182RacibórzSilesia, Poland
    621.0×
  183. 183OsanGyeonggi-do, South Korea
    621.0×
  184. 183NijmegenGelderland, The Netherlands
    621.0×
  185. 183PorsgrunnTelemark, Norway
    621.0×
  186. 183BessemerAlabama, United States
    621.0×
  187. 183Ponte Vedra BeachFlorida, United States
    621.0×
  188. 183RaymoreMissouri, United States
    621.0×
  189. 183TsuchiuraIbaraki, Japan
    621.0×
  190. 190Khon KaenKhon Kaen, Thailand
    611.0×
  191. 190NewmarketEngland, United Kingdom
    611.0×
  192. 190BrawleyCalifornia, United States
    611.0×
  193. 193YŏnmuChungcheongnam-do, South Korea
    611.0×
  194. 193BirminghamAlabama, United States
    611.0×
  195. 195YecheonGyeongsangbuk-do, South Korea
    611.0×
  196. 195Koch'angJeollabuk-do, South Korea
    611.0×
  197. 195KasaokaOkayama, Japan
    611.0×
  198. 195HadongGyeongsangnam-do, South Korea
    611.0×
  199. 199KatowiceSilesia, Poland
    611.0×
  200. 200NajuJeollanam-do, South Korea
    611.0×

Top 200 of 1,754 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 20, 2024, smogrank.com/history/2024-08-20 (accessed 3 Oct 2026).

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