SmogRank / History / September 17, 2024

Most polluted cities on September 17, 2024

1,769 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 88.7 µg/m³. Each city's own local calendar day.

Bad-air episodes during September 17, 2024. All episodes.

← Lahore 88.7 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for September 17, 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. 1Lahorelow-cost sensorsPunjab, Pakistan
    1745.9×
  2. 2Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1715.6×
  3. 3DushanbeDushanbe, Tajikistan
    1715.6×
  4. 4OsornoLos Lagos Region, Chile
    1685.3×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1564.2×
  6. 6La UniónLos Ríos Region, Chile
    1554.1×
  7. 7Santa Anita - Los FicusLima region, Peru
    1533.9×
  8. 8Dhakalow-cost sensorsDhaka Division, Bangladesh
    1533.9×
  9. 9KigaliKigali, Rwanda
    1523.8×
  10. 10HualpénBiobio, Chile
    1453.6×
  11. 11ChillánÑuble, Chile
    1403.4×
  12. 12ValdiviaLos Ríos Region, Chile
    1393.4×
  13. 13HualquiBiobio, Chile
    1373.3×
  14. 14AntananarivoAnalamanga, Madagascar
    1353.3×
  15. 15Puerto VarasLos Lagos Region, Chile
    1343.3×
  16. 16Puerto MonttLos Lagos Region, Chile
    1313.2×
  17. 17VillarricaAraucania, Chile
    1303.1×
  18. 18DelhiDelhi, India
    1283.1×
  19. 19ŁukówLublin, Poland
    1233.0×
  20. 20Islamabadlow-cost sensorsIslamabad, Pakistan
    1233.0×
  21. 21ChiguayanteBiobio, Chile
    1212.9×
  22. 22JakartaJakarta, Indonesia
    1202.9×
  23. 23RengoO'Higgins Region, Chile
    1112.6×
  24. 24KościerzynaPomerania, Poland
    1112.6×
  25. 25CuranilahueBiobio, Chile
    1072.5×
  26. 26ElblągWarmia-Masuria, Poland
    1072.5×
  27. 27RancaguaO'Higgins Region, Chile
    1062.5×
  28. 28CuricóMaule Region, Chile
    1062.5×
  29. 29CairoCairo, Egypt
    1022.4×
  30. 30PruszkówMazovia, Poland
    1002.4×
  31. 31CoronelBiobio, Chile
    982.3×
  32. 32SzczecinWest Pomerania, Poland
    982.3×
  33. 33Zielona GóraLubusz, Poland
    982.3×
  34. 34ZgierzŁódź Voivodeship, Poland
    972.3×
  35. 34KaliszGreater Poland, Poland
    972.3×
  36. 36WarsawMazovia, Poland
    972.3×
  37. 37ToruńKujawsko-Pomorskie, Poland
    962.2×
  38. 38PoznańGreater Poland, Poland
    962.2×
  39. 39WłocławekKujawsko-Pomorskie, Poland
    952.2×
  40. 40MielecSubcarpathia, Poland
    942.1×
  41. 41KutnoŁódź Voivodeship, Poland
    932.1×
  42. 42LegionowoMazovia, Poland
    932.1×
  43. 43ŻyrardówMazovia, Poland
    922.1×
  44. 43LublinLublin, Poland
    922.1×
  45. 43Konstancin-JeziornaMazovia, Poland
    922.1×
  46. 46BydgoszczKujawsko-Pomorskie, Poland
    922.1×
  47. 46ToméBiobio, Chile
    922.1×
  48. 48StarachowiceŚwiętokrzyskie, Poland
    922.1×
  49. 49KościanGreater Poland, Poland
    912.0×
  50. 50NacimientoBiobio, Chile
    902.0×
  51. 51OlsztynWarmia-Masuria, Poland
    902.0×
  52. 51KielceŚwiętokrzyskie, Poland
    902.0×
  53. 53CauquenesMaule Region, Chile
    902.0×
  54. 54OtwockMazovia, Poland
    902.0×
  55. 55San Francisco De BorjaLima region, Peru
    892.0×
  56. 56DziałdowoWarmia-Masuria, Poland
    892.0×
  57. 56KanchanaburiKanchanaburi, Thailand
    892.0×
  58. 56ŁaskŁódź Voivodeship, Poland
    892.0×
  59. 56Los ÁngelesBiobio, Chile
    892.0×
  60. 60TemucoAraucania, Chile
    881.9×
  61. 61Villa Poeta José Gálvez BarrenecheaLima region, Peru
    881.9×
  62. 62WawerMazovia, Poland
    881.9×
  63. 63TratTrat, Thailand
    881.9×
  64. 63Puente AltoSantiago Metropolitan, Chile
    881.9×
  65. 65QuillotaValparaiso, Chile
    871.9×
  66. 66HanoiHanoi, Vietnam
    871.9×
  67. 67BytówPomerania, Poland
    871.9×
  68. 68TalcaMaule Region, Chile
    871.9×
  69. 68CoyhaiqueAysén, Chile
    871.9×
  70. 70ZamośćLublin, Poland
    861.9×
  71. 71KatowiceSilesia, Poland
    861.9×
  72. 72GdyniaPomerania, Poland
    861.9×
  73. 73PłockMazovia, Poland
    861.8×
  74. 74ŁódźŁódź Voivodeship, Poland
    851.8×
  75. 75Puerto AysénAysén, Chile
    851.8×
  76. 76NiskoSubcarpathia, Poland
    851.8×
  77. 77SaraburiSaraburi, Thailand
    841.8×
  78. 77TalcahuanoBiobio, Chile
    841.8×
  79. 79Skarżysko-KamiennaŚwiętokrzyskie, Poland
    841.8×
  80. 79Si Maha PhotPrachin Buri, Thailand
    841.8×
  81. 81SantiagoSantiago Metropolitan, Chile
    841.8×
  82. 82GdańskPomerania, Poland
    841.8×
  83. 83Bang NaBangkok, Thailand
    841.8×
  84. 84PułtuskMazovia, Poland
    831.8×
  85. 85Samut SakhonSamut Sakhon, Thailand
    831.8×
  86. 86RadomskoŁódź Voivodeship, Poland
    821.7×
  87. 87Gorzów WielkopolskiLubusz, Poland
    821.7×
  88. 87QuinteroValparaiso, Chile
    821.7×
  89. 89Jastrzębie ZdrójSilesia, Poland
    821.7×
  90. 89Jacobo HunterArequipa, Peru
    821.7×
  91. 91Nakhon PathomNakhon Pathom, Thailand
    811.7×
  92. 91KrakówLesser Poland, Poland
    811.7×
  93. 93Kędzierzyn-KoźleOpole Voivodeship, Poland
    801.7×
  94. 94RacibórzSilesia, Poland
    801.6×
  95. 95San Pedro de la PazBiobio, Chile
    801.6×
  96. 96KolkataWest Bengal, India
    791.6×
  97. 96Lop BuriLopburi, Thailand
    791.6×
  98. 96Khlong Sam WaBangkok, Thailand
    791.6×
  99. 99CallaoCallao, Peru
    791.6×
  100. 100GrajewoPodlasie, Poland
    781.6×
  101. 100CopiapóAtacama, Chile
    781.6×
  102. 100AntofagastaAntofagasta, Chile
    781.6×
  103. 103Viña del MarValparaiso, Chile
    781.6×
  104. 104QuilpuéValparaiso, Chile
    781.6×
  105. 105RadomMazovia, Poland
    781.6×
  106. 106YuanlinTaiwan, Taiwan
    771.6×
  107. 107Khlong LuangPathum Thani, Thailand
    771.5×
  108. 107ConcepciónBiobio, Chile
    771.5×
  109. 109Nong KhaemBangkok, Thailand
    771.5×
  110. 109XinyingTaiwan, Taiwan
    771.5×
  111. 109NantouTaiwan, Taiwan
    771.5×
  112. 112Phra PradaengSamut Prakan, Thailand
    761.5×
  113. 112Khan Na YaoBangkok, Thailand
    761.5×
  114. 114ZhushanTaiwan, Taiwan
    751.5×
  115. 114TalaganteSantiago Metropolitan, Chile
    751.5×
  116. 114San ClementeIca, Peru
    751.5×
  117. 117DouliuTaiwan, Taiwan
    751.5×
  118. 117BeijingBeijing, China
    751.5×
  119. 117WrocławLower Silesia, Poland
    751.5×
  120. 120DębicaSubcarpathia, Poland
    741.4×
  121. 121PrzemyślSubcarpathia, Poland
    741.4×
  122. 121Kathmandulow-cost sensorsBagmati Province, Nepal
    741.4×
  123. 123Şabāḩ as SālimMubārak al Kabīr, Kuwait
    741.4×
  124. 123MaputoMaputo City, Mozambique
    741.4×
  125. 123ConcónValparaiso, Chile
    741.4×
  126. 126Nakhon NayokNakhon Nayok, Thailand
    731.4×
  127. 127Nakhon RatchasimaNakhon Ratchasima, Thailand
    731.4×
  128. 127GuangzhouGuangdong, China
    731.4×
  129. 129ChennaiTamil Nadu, India
    731.4×
  130. 130Sing BuriSing Buri, Thailand
    731.4×
  131. 131Chiayi CityTaiwan, Taiwan
    721.4×
  132. 132BuziTaiwan, Taiwan
    721.4×
  133. 132Strzelce OpolskieOpole Voivodeship, Poland
    721.4×
  134. 134La SerenaCoquimbo Region, Chile
    721.4×
  135. 135Lak SiBangkok, Thailand
    721.3×
  136. 136ŚwiecieKujawsko-Pomorskie, Poland
    711.3×
  137. 137Bueng KumBangkok, Thailand
    711.3×
  138. 138AugustówPodlasie, Poland
    711.3×
  139. 138BangkokBangkok, Thailand
    711.3×
  140. 140YongkangTaiwan, Taiwan
    711.3×
  141. 140BirminghamAlabama, United States
    711.3×
  142. 140Nepeanlow-cost sensorsOntario, Canada
    711.3×
  143. 143Samut PrakanSamut Prakan, Thailand
    701.3×
  144. 143BeigangTaiwan, Taiwan
    701.3×
  145. 143Medina Estateslow-cost sensorsGreater Accra, Ghana
    701.3×
  146. 146ShanghaiShanghai, China
    701.3×
  147. 147PuliTaiwan, Taiwan
    701.3×
  148. 147ErlunTaiwan, Taiwan
    701.3×
  149. 147KłodzkoLower Silesia, Poland
    701.3×
  150. 150RzeszówSubcarpathia, Poland
    701.3×
  151. 151NanNan, Thailand
    701.3×
  152. 151Bielsko-BialaSilesia, Poland
    701.3×
  153. 153Hua HinPrachuap Khiri Khan, Thailand
    691.3×
  154. 153ChanghuaTaiwan, Taiwan
    691.3×
  155. 155Jelenia GóraLower Silesia, Poland
    691.3×
  156. 156Nong ChokBangkok, Thailand
    691.3×
  157. 156OpoleOpole Voivodeship, Poland
    691.3×
  158. 156ChocopeLa Libertad, Peru
    691.3×
  159. 156TocopillaAntofagasta, Chile
    691.3×
  160. 160ErlinTaiwan, Taiwan
    681.2×
  161. 161AshgabatAshgabat, Turkmenistan
    681.2×
  162. 161Addis AbabaAddis Ababa, Ethiopia
    681.2×
  163. 161LazarevacCentral Serbia, Serbia
    681.2×
  164. 164MumbaiMaharashtra, India
    681.2×
  165. 165BiałystokPodlasie, Poland
    681.2×
  166. 165MukdahanMukdahan, Thailand
    681.2×
  167. 165TaichungTaiwan, Taiwan
    681.2×
  168. 165AricaArica y Parinacota Region, Chile
    681.2×
  169. 169PhichitPhichit, Thailand
    681.2×
  170. 169Ban Khlong PrawetBangkok, Thailand
    681.2×
  171. 171JarosławSubcarpathia, Poland
    671.2×
  172. 171ŻaryLubusz, Poland
    671.2×
  173. 173TarnówLesser Poland, Poland
    671.2×
  174. 173Mueang NonthaburiNonthaburi, Thailand
    671.2×
  175. 175Laem ChabangChon Buri, Thailand
    671.2×
  176. 175CalamaAntofagasta, Chile
    671.2×
  177. 177RatchaburiRatchaburi, Thailand
    671.2×
  178. 177XizhouTaiwan, Taiwan
    671.2×
  179. 177Czechowice-DziedziceSilesia, Poland
    671.2×
  180. 180Mae SotTak, Thailand
    671.2×
  181. 180Lat KrabangBangkok, Thailand
    671.2×
  182. 180Sai MaiBangkok, Thailand
    671.2×
  183. 183Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    661.2×
  184. 183Bang KapiBangkok, Thailand
    661.2×
  185. 185YanacanchaPasco, Peru
    661.2×
  186. 186Ban ChangRayong, Thailand
    661.1×
  187. 187LamphunLamphun, Thailand
    661.1×
  188. 188Mae SaiChiang Rai, Thailand
    661.1×
  189. 189YasothonYasothon, Thailand
    651.1×
  190. 189Wan ChaiWan Chai, Hong Kong
    651.1×
  191. 191KalasinKalasin, Thailand
    641.1×
  192. 192UttaraditUttaradit, Thailand
    641.1×
  193. 192RayongRayong, Thailand
    641.1×
  194. 192TainanTaiwan, Taiwan
    641.1×
  195. 195ChanthaburiChanthaburi, Thailand
    641.1×
  196. 195Alto HospicioTarapacá, Chile
    641.1×
  197. 197FengshanTakao, Taiwan
    641.1×
  198. 198Asunciónlow-cost sensorsAsuncion, Paraguay
    641.1×
  199. 199EłkWarmia-Masuria, Poland
    631.0×
  200. 200ObrenovacCentral Serbia, Serbia
    631.0×

Top 200 of 1,769 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 17, 2024, smogrank.com/history/2024-09-17 (accessed 3 Oct 2026).

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