SmogRank / History / September 25, 2024

Most polluted cities on September 25, 2024

1,736 cities ranked by their average PM2.5 over the day; the worst was Salor, Uzbekistan, at 114.0 µg/m³. Each city's own local calendar day.

← Salor 114.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for September 25, 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. 1SalorTashkent Region, Uzbekistan
    1927.6×
  2. 2Kampalalow-cost sensorsCentral Region, Uganda
    1816.6×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    1776.2×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1665.1×
  5. 5DelhiDelhi, India
    1624.7×
  6. 6DushanbeDushanbe, Tajikistan
    1594.4×
  7. 7Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1584.4×
  8. 8ValdiviaLos Ríos Region, Chile
    1574.3×
  9. 9AshgabatAshgabat, Turkmenistan
    1564.2×
  10. 10HanoiHanoi, Vietnam
    1544.0×
  11. 11Santa Anita - Los FicusLima region, Peru
    1523.8×
  12. 12YanacanchaPasco, Peru
    1493.7×
  13. 13Asunciónlow-cost sensorsAsuncion, Paraguay
    1433.5×
  14. 14KigaliKigali, Rwanda
    1353.3×
  15. 14Islamabadlow-cost sensorsIslamabad, Pakistan
    1353.3×
  16. 16BaghdadBaghdad, Iraq
    1343.3×
  17. 17VillarricaAraucania, Chile
    1333.2×
  18. 18Puerto VarasLos Lagos Region, Chile
    1303.2×
  19. 19BeijingBeijing, China
    1273.1×
  20. 20JakartaJakarta, Indonesia
    1192.8×
  21. 21Puerto MonttLos Lagos Region, Chile
    1152.8×
  22. 22La UniónLos Ríos Region, Chile
    1092.6×
  23. 23OsornoLos Lagos Region, Chile
    1002.4×
  24. 24CairoCairo, Egypt
    982.3×
  25. 25NacimientoBiobio, Chile
    972.3×
  26. 26MiskolcBorsod-Abaúj-Zemplén, Hungary
    972.3×
  27. 27Jacobo HunterArequipa, Peru
    942.1×
  28. 28São PauloSão Paulo, Brazil
    932.1×
  29. 29Bang NaBangkok, Thailand
    881.9×
  30. 29AlgiersAlgiers, Algeria
    881.9×
  31. 29HualquiBiobio, Chile
    881.9×
  32. 32N'DjamenaN’Djaména, Chad
    871.9×
  33. 33CuranilahueBiobio, Chile
    861.9×
  34. 34KraljevoCentral Serbia, Serbia
    861.8×
  35. 35Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    851.8×
  36. 36TemucoAraucania, Chile
    841.8×
  37. 37GuangzhouGuangdong, China
    831.8×
  38. 38HualpénBiobio, Chile
    831.8×
  39. 39Şabāḩ as SālimMubārak al Kabīr, Kuwait
    821.7×
  40. 40Samut SakhonSamut Sakhon, Thailand
    821.7×
  41. 41ChiguayanteBiobio, Chile
    811.7×
  42. 42MaputoMaputo City, Mozambique
    811.7×
  43. 42Sydneylow-cost sensorsNew South Wales, Australia
    811.7×
  44. 42CoyhaiqueAysén, Chile
    811.7×
  45. 45Puerto AysénAysén, Chile
    811.7×
  46. 45Puente AltoSantiago Metropolitan, Chile
    811.7×
  47. 47CoronelBiobio, Chile
    801.6×
  48. 48Dhakalow-cost sensorsDhaka Division, Bangladesh
    801.6×
  49. 49FontanaCalifornia, United States
    781.6×
  50. 50NišCentral Serbia, Serbia
    781.6×
  51. 51ToméBiobio, Chile
    781.6×
  52. 52San Francisco De BorjaLima region, Peru
    771.6×
  53. 53TocopillaAntofagasta, Chile
    771.5×
  54. 54AntananarivoAnalamanga, Madagascar
    761.5×
  55. 55BogotáBogota D.C., Colombia
    761.5×
  56. 56SantiagoSantiago Metropolitan, Chile
    761.5×
  57. 57YauriCuzco Department, Peru
    751.5×
  58. 58Nakhon PathomNakhon Pathom, Thailand
    741.4×
  59. 58Guatemala CityGuatemala, Guatemala
    741.4×
  60. 58AntofagastaAntofagasta, Chile
    741.4×
  61. 58San ClementeIca, Peru
    741.4×
  62. 62Ban Samae DamBangkok, Thailand
    731.4×
  63. 62QuinteroValparaiso, Chile
    731.4×
  64. 64La SerenaCoquimbo Region, Chile
    721.4×
  65. 65CoquimboCoquimbo Region, Chile
    721.4×
  66. 66Ang Mo Kio New TownSingapore
    721.3×
  67. 66CopiapóAtacama, Chile
    721.3×
  68. 68Jurupa ValleyCalifornia, United States
    711.3×
  69. 69RabinalBaja Verapaz, Guatemala
    711.3×
  70. 69RancaguaO'Higgins Region, Chile
    711.3×
  71. 69PiscoIca, Peru
    711.3×
  72. 72Ulan BatorUlaanbaatar, Mongolia
    711.3×
  73. 73Nong KhaemBangkok, Thailand
    711.3×
  74. 73RiversideCalifornia, United States
    711.3×
  75. 75Villa Poeta José Gálvez BarrenecheaLima region, Peru
    701.3×
  76. 76Khlong LuangPathum Thani, Thailand
    701.3×
  77. 76QuillotaValparaiso, Chile
    701.3×
  78. 76CallaoCallao, Peru
    701.3×
  79. 79UžiceCentral Serbia, Serbia
    701.3×
  80. 80ShanghaiShanghai, China
    701.3×
  81. 81TalaganteSantiago Metropolitan, Chile
    691.3×
  82. 81RengoO'Higgins Region, Chile
    691.3×
  83. 83CuricóMaule Region, Chile
    691.2×
  84. 84PirotCentral Serbia, Serbia
    691.2×
  85. 84ChillánÑuble, Chile
    691.2×
  86. 84AricaArica y Parinacota Region, Chile
    691.2×
  87. 87TalcahuanoBiobio, Chile
    691.2×
  88. 88GrajewoPodlasie, Poland
    681.2×
  89. 89ChennaiTamil Nadu, India
    681.2×
  90. 89Ban Khlong PrawetBangkok, Thailand
    681.2×
  91. 91Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    681.2×
  92. 92AstanaAstana, Kazakhstan
    681.2×
  93. 92ConcepciónBiobio, Chile
    681.2×
  94. 94Phra PradaengSamut Prakan, Thailand
    681.2×
  95. 94Rapid CitySouth Dakota, United States
    681.2×
  96. 96Los ÁngelesBiobio, Chile
    671.2×
  97. 96Khlong Sam WaBangkok, Thailand
    671.2×
  98. 98Accralow-cost sensorsGreater Accra, Ghana
    661.1×
  99. 98CauquenesMaule Region, Chile
    661.1×
  100. 100Bang Bo DistrictSamut Prakan, Thailand
    651.1×
  101. 101ChocopeLa Libertad, Peru
    651.1×
  102. 102ŁukówLublin, Poland
    641.1×
  103. 102Saphan SungBangkok, Thailand
    641.1×
  104. 104BangkokBangkok, Thailand
    641.1×
  105. 105SarajevoFederation of B&H, Bosnia and Herzegovina
    641.1×
  106. 105CalamaAntofagasta, Chile
    641.1×
  107. 105NogalesSonora, Mexico
    641.1×
  108. 108Wan ChaiWan Chai, Hong Kong
    641.1×
  109. 109San Pedro de la PazBiobio, Chile
    641.1×
  110. 110MumbaiMaharashtra, India
    631.1×
  111. 110Jurong WestSingapore
    631.1×
  112. 110Alto HospicioTarapacá, Chile
    631.1×
  113. 113NajuJeollanam-do, South Korea
    631.0×
  114. 113GainesvilleGeorgia, United States
    631.0×
  115. 115FukuroiShizuoka, Japan
    631.0×
  116. 116HyderabadTelangana, India
    631.0×
  117. 117Almatylow-cost sensorsAlmaty, Kazakhstan
    631.0×
  118. 117FresnoCalifornia, United States
    631.0×
  119. 117Los AngelesCalifornia, United States
    631.0×
  120. 120La Crescenta-Montroselow-cost sensorsCalifornia, United States
    621.0×
  121. 121LublinLublin, Poland
    621.0×
  122. 121LotaBiobio, Chile
    621.0×
  123. 121Khan Na YaoBangkok, Thailand
    621.0×
  124. 124Kathmandulow-cost sensorsBagmati Province, Nepal
    611.0×
  125. 124Kuala LumpurKuala Lumpur, Malaysia
    611.0×
  126. 126BurbankCalifornia, United States
    611.0×
  127. 127KrakówLesser Poland, Poland
    611.0×
  128. 128Queenstown Estatelow-cost sensorsSingapore
    611.0×
  129. 129LawrencevilleGeorgia, United States
    610.9×
  130. 129BanningCalifornia, United States
    610.9×
  131. 131TangjinChungcheongnam-do, South Korea
    600.9×
  132. 132KasaokaOkayama, Japan
    600.9×
  133. 132Agouralow-cost sensorsCalifornia, United States
    600.9×
  134. 134NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    600.9×
  135. 135KielceŚwiętokrzyskie, Poland
    600.9×
  136. 135ClovisCalifornia, United States
    600.9×
  137. 137StarachowiceŚwiętokrzyskie, Poland
    600.9×
  138. 137ZemunCentral Serbia, Serbia
    600.9×
  139. 137TalcaMaule Region, Chile
    600.9×
  140. 137NogalesArizona, United States
    600.9×
  141. 141Bueng KumBangkok, Thailand
    590.9×
  142. 142PruszkówMazovia, Poland
    590.9×
  143. 142AugustówPodlasie, Poland
    590.9×
  144. 142AnaheimCalifornia, United States
    590.9×
  145. 142VisaliaCalifornia, United States
    590.9×
  146. 146CorcoranCalifornia, United States
    590.9×
  147. 147GlendoraCalifornia, United States
    590.9×
  148. 148ChimboteAncash, Peru
    580.9×
  149. 149Santa ClaritaCalifornia, United States
    580.9×
  150. 150WoodlandsSingapore
    580.9×
  151. 150PortervilleCalifornia, United States
    580.9×
  152. 152IwataShizuoka, Japan
    580.9×
  153. 152ChiryūAichi, Japan
    580.9×
  154. 152Ulu BedokSingapore
    580.9×
  155. 155Skarżysko-KamiennaŚwiętokrzyskie, Poland
    580.8×
  156. 155RadomMazovia, Poland
    580.8×
  157. 155HabikinoOsaka, Japan
    580.8×
  158. 158PrzemyślSubcarpathia, Poland
    580.8×
  159. 158Inglewoodlow-cost sensorsCalifornia, United States
    580.8×
  160. 160Yerevanlow-cost sensorsYerevan, Armenia
    570.8×
  161. 160Samut PrakanSamut Prakan, Thailand
    570.8×
  162. 160HanfordCalifornia, United States
    570.8×
  163. 163Bang KapiBangkok, Thailand
    570.8×
  164. 163GumiGyeongsangbuk-do, South Korea
    570.8×
  165. 165ZamośćLublin, Poland
    570.8×
  166. 165ObrenovacCentral Serbia, Serbia
    570.8×
  167. 165NonsanChungcheongnam-do, South Korea
    570.8×
  168. 165SandachōHyōgo, Japan
    570.8×
  169. 165Jastrzębie ZdrójSilesia, Poland
    570.8×
  170. 170RichmondBritish Columbia, Canada
    570.8×
  171. 170BizenOkayama, Japan
    570.8×
  172. 172MielecSubcarpathia, Poland
    560.8×
  173. 172PančevoVojvodina, Serbia
    560.8×
  174. 172BelgradeCentral Serbia, Serbia
    560.8×
  175. 172Gimpo-siGyeonggi-do, South Korea
    560.8×
  176. 172KimjeJeollabuk-do, South Korea
    560.8×
  177. 172HigashihiroshimaHiroshima, Japan
    560.8×
  178. 178NiskoSubcarpathia, Poland
    560.8×
  179. 178Taesal-liChungcheongnam-do, South Korea
    560.8×
  180. 178Sai MaiBangkok, Thailand
    560.8×
  181. 181JarosławSubcarpathia, Poland
    560.8×
  182. 181ŻywiecSilesia, Poland
    560.8×
  183. 181KatowiceSilesia, Poland
    560.8×
  184. 181Banja LukaSrpska, Bosnia and Herzegovina
    560.8×
  185. 181Lake ElsinoreCalifornia, United States
    560.8×
  186. 181Santa Monicalow-cost sensorsCalifornia, United States
    560.8×
  187. 187OtwockMazovia, Poland
    560.8×
  188. 187Hawthornelow-cost sensorsCalifornia, United States
    560.8×
  189. 187TōkaiAichi, Japan
    560.8×
  190. 190DębicaSubcarpathia, Poland
    550.8×
  191. 190IksanJeollabuk-do, South Korea
    550.8×
  192. 190OwariasahiAichi, Japan
    550.8×
  193. 193KamisuIbaraki, Japan
    550.8×
  194. 194JinchengFukien, Taiwan
    550.8×
  195. 194Lagoslow-cost sensorsLagos, Nigeria
    550.8×
  196. 194Lak SiBangkok, Thailand
    550.8×
  197. 197BiałystokPodlasie, Poland
    550.7×
  198. 197CheonanChungcheongnam-do, South Korea
    550.7×
  199. 197Chinch'ŏnNorth Chungcheong, South Korea
    550.7×
  200. 197MinatoWakayama, Japan
    550.7×

Top 200 of 1,736 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 25, 2024, smogrank.com/history/2024-09-25 (accessed 3 Oct 2026).

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