SmogRank / History / September 27, 2024

Most polluted cities on September 27, 2024

1,726 cities ranked by their average PM2.5 over the day; the worst was Kampala, Uganda, at 159.0 µg/m³. Each city's own local calendar day.

← Kampala 159.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for September 27, 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. 1Kampalalow-cost sensorsCentral Region, Uganda
    23410.6×
  2. 2DushanbeDushanbe, Tajikistan
    1715.6×
  3. 3SalorTashkent Region, Uzbekistan
    1655.1×
  4. 4Los ÁngelesBiobio, Chile
    1644.9×
  5. 5NacimientoBiobio, Chile
    1634.9×
  6. 6Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1624.8×
  7. 7Santa Anita - Los FicusLima region, Peru
    1523.8×
  8. 8BakuBaki, Azerbaijan
    1463.6×
  9. 9ChillánÑuble, Chile
    1423.5×
  10. 10Lahorelow-cost sensorsPunjab, Pakistan
    1413.5×
  11. 11Dhakalow-cost sensorsDhaka Division, Bangladesh
    1333.2×
  12. 12HanoiHanoi, Vietnam
    1283.1×
  13. 12CauquenesMaule Region, Chile
    1283.1×
  14. 14VillarricaAraucania, Chile
    1263.1×
  15. 15Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1202.9×
  16. 16CoronelBiobio, Chile
    1172.8×
  17. 17HualpénBiobio, Chile
    1132.7×
  18. 18Addis AbabaAddis Ababa, Ethiopia
    1082.6×
  19. 19CairoCairo, Egypt
    1052.5×
  20. 19Bang NaBangkok, Thailand
    1052.5×
  21. 19BeijingBeijing, China
    1052.5×
  22. 22La UniónLos Ríos Region, Chile
    1032.4×
  23. 23Puerto VarasLos Lagos Region, Chile
    1032.4×
  24. 24CuranilahueBiobio, Chile
    1022.4×
  25. 25Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1002.4×
  26. 26HualquiBiobio, Chile
    1002.4×
  27. 27OsornoLos Lagos Region, Chile
    992.3×
  28. 28Ban Samae DamBangkok, Thailand
    982.3×
  29. 29San Francisco De BorjaLima region, Peru
    962.2×
  30. 30ValdiviaLos Ríos Region, Chile
    952.2×
  31. 30ChiguayanteBiobio, Chile
    952.2×
  32. 32SantiagoSantiago Metropolitan, Chile
    942.2×
  33. 33TemucoAraucania, Chile
    942.2×
  34. 34JakartaJakarta, Indonesia
    932.1×
  35. 34TalcaMaule Region, Chile
    932.1×
  36. 36AntananarivoAnalamanga, Madagascar
    932.1×
  37. 37N'DjamenaN’Djaména, Chad
    912.0×
  38. 37Puerto AysénAysén, Chile
    912.0×
  39. 39Nong KhaemBangkok, Thailand
    912.0×
  40. 39Puerto MonttLos Lagos Region, Chile
    912.0×
  41. 41RengoO'Higgins Region, Chile
    902.0×
  42. 41Villa Poeta José Gálvez BarrenecheaLima region, Peru
    902.0×
  43. 43ToméBiobio, Chile
    881.9×
  44. 44CuricóMaule Region, Chile
    881.9×
  45. 45Jacobo HunterArequipa, Peru
    881.9×
  46. 46Puente AltoSantiago Metropolitan, Chile
    871.9×
  47. 47RancaguaO'Higgins Region, Chile
    861.9×
  48. 48KraljevoCentral Serbia, Serbia
    861.9×
  49. 49NajuJeollanam-do, South Korea
    861.8×
  50. 49QuillotaValparaiso, Chile
    861.8×
  51. 51GuangzhouGuangdong, China
    851.8×
  52. 52BaghdadBaghdad, Iraq
    841.8×
  53. 53BangkokBangkok, Thailand
    821.7×
  54. 54CallaoCallao, Peru
    811.7×
  55. 54Khlong Sam WaBangkok, Thailand
    811.7×
  56. 56YanacanchaPasco, Peru
    801.6×
  57. 57Bang KapiBangkok, Thailand
    801.6×
  58. 58BogotáBogota D.C., Colombia
    791.6×
  59. 59Vientianelow-cost sensorsVientiane Prefecture, Laos
    791.6×
  60. 60QuinteroValparaiso, Chile
    791.6×
  61. 61AntofagastaAntofagasta, Chile
    791.6×
  62. 62Islamabadlow-cost sensorsIslamabad, Pakistan
    781.6×
  63. 62TocopillaAntofagasta, Chile
    781.6×
  64. 64Wan ChaiWan Chai, Hong Kong
    771.5×
  65. 65Saphan SungBangkok, Thailand
    771.5×
  66. 66Viña del MarValparaiso, Chile
    761.5×
  67. 66La SerenaCoquimbo Region, Chile
    761.5×
  68. 68CoyhaiqueAysén, Chile
    761.5×
  69. 69GunsanJeollabuk-do, South Korea
    761.5×
  70. 70ConcepciónBiobio, Chile
    751.5×
  71. 70Khan Na YaoBangkok, Thailand
    751.5×
  72. 72LotaBiobio, Chile
    751.5×
  73. 73RabinalBaja Verapaz, Guatemala
    741.4×
  74. 74ConcónValparaiso, Chile
    741.4×
  75. 74FontanaCalifornia, United States
    741.4×
  76. 76FanlingNorth District, Hong Kong
    741.4×
  77. 77MaputoMaputo City, Mozambique
    731.4×
  78. 77CoquimboCoquimbo Region, Chile
    731.4×
  79. 79Guatemala CityGuatemala, Guatemala
    731.4×
  80. 80ChennaiTamil Nadu, India
    721.4×
  81. 80CopiapóAtacama, Chile
    721.4×
  82. 80YauriCuzco Department, Peru
    721.4×
  83. 83Ban Khlong PrawetBangkok, Thailand
    721.4×
  84. 83TalcahuanoBiobio, Chile
    721.4×
  85. 85ĆuprijaCentral Serbia, Serbia
    721.4×
  86. 86Tai PoTai Po, Hong Kong
    711.3×
  87. 87AshgabatAshgabat, Turkmenistan
    711.3×
  88. 88KimjeJeollabuk-do, South Korea
    711.3×
  89. 88IksanJeollabuk-do, South Korea
    711.3×
  90. 88NogalesSonora, Mexico
    711.3×
  91. 91BuanJeollabuk-do, South Korea
    711.3×
  92. 92Kuala LumpurKuala Lumpur, Malaysia
    711.3×
  93. 93Lak SiBangkok, Thailand
    701.3×
  94. 94TangjinChungcheongnam-do, South Korea
    701.3×
  95. 94NonsanChungcheongnam-do, South Korea
    701.3×
  96. 94AlbuquerqueNew Mexico, United States
    701.3×
  97. 97DouliuTaiwan, Taiwan
    701.3×
  98. 97San ClementeIca, Peru
    701.3×
  99. 97Sai MaiBangkok, Thailand
    701.3×
  100. 100Jurupa ValleyCalifornia, United States
    691.3×
  101. 100RiversideCalifornia, United States
    691.3×
  102. 102San Pedro de la PazBiobio, Chile
    691.2×
  103. 103Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    691.2×
  104. 103YuanlinTaiwan, Taiwan
    691.2×
  105. 103ErlunTaiwan, Taiwan
    691.2×
  106. 103Rio RanchoNew Mexico, United States
    691.2×
  107. 107AricaArica y Parinacota Region, Chile
    691.2×
  108. 108JeongeupJeollabuk-do, South Korea
    681.2×
  109. 109Nong ChokBangkok, Thailand
    681.2×
  110. 109Tin Shui WaiYuen Long, Hong Kong
    681.2×
  111. 111XinyingTaiwan, Taiwan
    681.2×
  112. 111WanjuJeollabuk-do, South Korea
    681.2×
  113. 113JeonjuJeollabuk-do, South Korea
    671.2×
  114. 113ChangnyeongGyeongsangnam-do, South Korea
    671.2×
  115. 115Koch'angJeollabuk-do, South Korea
    671.2×
  116. 115Lat KrabangBangkok, Thailand
    671.2×
  117. 117SinanJeollanam-do, South Korea
    671.2×
  118. 118FengshanTakao, Taiwan
    671.2×
  119. 118CalamaAntofagasta, Chile
    671.2×
  120. 120Ganghwa-gunIncheon, South Korea
    661.2×
  121. 121KaohsiungTakao, Taiwan
    661.2×
  122. 122ZhushanTaiwan, Taiwan
    661.1×
  123. 122FresnoCalifornia, United States
    661.1×
  124. 124Tuen MunTuen Mun, Hong Kong
    661.1×
  125. 124Hwaseong-siGyeonggi-do, South Korea
    661.1×
  126. 126GumiGyeongsangbuk-do, South Korea
    651.1×
  127. 127Tsuen WanTsuen Wan, Hong Kong
    651.1×
  128. 127MuanJeollanam-do, South Korea
    651.1×
  129. 129KinzanChungcheongnam-do, South Korea
    651.1×
  130. 130HonmachiKumamoto, Japan
    651.1×
  131. 130ChocopeLa Libertad, Peru
    651.1×
  132. 132Mueang NonthaburiNonthaburi, Thailand
    641.1×
  133. 132MasanGwangju, South Korea
    641.1×
  134. 134AstanaAstana, Kazakhstan
    641.1×
  135. 135TaibaoTaiwan, Taiwan
    641.1×
  136. 135TokiGifu, Japan
    641.1×
  137. 135Medina Estateslow-cost sensorsGreater Accra, Ghana
    641.1×
  138. 138BeigangTaiwan, Taiwan
    641.1×
  139. 138Chiayi CityTaiwan, Taiwan
    641.1×
  140. 138MinamataKumamoto, Japan
    641.1×
  141. 138Carsonlow-cost sensorsCalifornia, United States
    641.1×
  142. 142NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    641.1×
  143. 142San Tung Chung HangIslands, Hong Kong
    641.1×
  144. 142Chinch'ŏnNorth Chungcheong, South Korea
    641.1×
  145. 142São PauloSão Paulo, Brazil
    641.1×
  146. 142VisaliaCalifornia, United States
    641.1×
  147. 147ShanghaiShanghai, China
    631.0×
  148. 147ChungjuNorth Chungcheong, South Korea
    631.0×
  149. 147SaikiOita, Japan
    631.0×
  150. 147Alto HospicioTarapacá, Chile
    631.0×
  151. 147Inglewoodlow-cost sensorsCalifornia, United States
    631.0×
  152. 152KoesanNorth Chungcheong, South Korea
    631.0×
  153. 153Novi PazarCentral Serbia, Serbia
    631.0×
  154. 153UžiceCentral Serbia, Serbia
    631.0×
  155. 153NogalesArizona, United States
    631.0×
  156. 156YongkangTaiwan, Taiwan
    631.0×
  157. 156Kwai ChungKwai Tsing District, Hong Kong
    631.0×
  158. 156YesanChungcheongnam-do, South Korea
    631.0×
  159. 156Taesal-liChungcheongnam-do, South Korea
    631.0×
  160. 156MokpoJeollanam-do, South Korea
    631.0×
  161. 161OkcheonNorth Chungcheong, South Korea
    631.0×
  162. 161MissionTexas, United States
    631.0×
  163. 161GlendoraCalifornia, United States
    631.0×
  164. 161Los AngelesCalifornia, United States
    631.0×
  165. 165TainanTaiwan, Taiwan
    621.0×
  166. 166IncheonIncheon, South Korea
    621.0×
  167. 166HayangGyeongsangbuk-do, South Korea
    621.0×
  168. 168Cheongju-siNorth Chungcheong, South Korea
    621.0×
  169. 169Ulan BatorUlaanbaatar, Mongolia
    621.0×
  170. 170ErlinTaiwan, Taiwan
    621.0×
  171. 170GaigeturiJeju-do, South Korea
    621.0×
  172. 170Hawthornelow-cost sensorsCalifornia, United States
    621.0×
  173. 170Sunland ParkNew Mexico, United States
    621.0×
  174. 174AnaheimCalifornia, United States
    611.0×
  175. 174HanfordCalifornia, United States
    611.0×
  176. 174BizenOkayama, Japan
    611.0×
  177. 174ShikokuchūōEhime, Japan
    611.0×
  178. 178Sau Mau PingKwun Tong District, Hong Kong
    611.0×
  179. 178SaijōEhime, Japan
    611.0×
  180. 178YumaArizona, United States
    611.0×
  181. 178Santa Monicalow-cost sensorsCalifornia, United States
    611.0×
  182. 182Sham Shui PoSham Shui Po District, Hong Kong
    611.0×
  183. 182Mong KokYau Tsim Mong District, Hong Kong
    611.0×
  184. 182GwangjuGwangju, South Korea
    611.0×
  185. 182Gimpo-siGyeonggi-do, South Korea
    611.0×
  186. 186Quezon Citylow-cost sensorsNational Capital Region, Philippines
    611.0×
  187. 186Jurong WestSingapore
    611.0×
  188. 186Arden-ArcadeCalifornia, United States
    611.0×
  189. 189NantouTaiwan, Taiwan
    610.9×
  190. 190SmederevoCentral Serbia, Serbia
    600.9×
  191. 190NišCentral Serbia, Serbia
    600.9×
  192. 190WatertownSouth Dakota, United States
    600.9×
  193. 190CorcoranCalifornia, United States
    600.9×
  194. 190La Crescenta-Montroselow-cost sensorsCalifornia, United States
    600.9×
  195. 195HyderabadTelangana, India
    600.9×
  196. 195YeongjuGyeongsangbuk-do, South Korea
    600.9×
  197. 195YeongdongNorth Chungcheong, South Korea
    600.9×
  198. 195Ang Mo Kio New TownSingapore
    600.9×
  199. 199Jinan-gunJeollabuk-do, South Korea
    600.9×
  200. 200PuliTaiwan, Taiwan
    600.9×

Top 200 of 1,726 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, September 27, 2024, smogrank.com/history/2024-09-27 (accessed 3 Oct 2026).

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