SmogRank / History / October 23, 2024

Most polluted cities on October 23, 2024

2,273 cities ranked by their average PM2.5 over the day; the worst was Lahore, Pakistan, at 246.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during October 23, 2024. All episodes.

← Lahore 246.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for October 23, 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
    34216.4×
  2. 2DelhiDelhi, India
    26912.9×
  3. 3NegotinCentral Serbia, Serbia
    1856.9×
  4. 4Kampalalow-cost sensorsCentral Region, Uganda
    1806.4×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1675.2×
  6. 6N'DjamenaN’Djaména, Chad
    1665.1×
  7. 7Banja LukaSrpska, Bosnia and Herzegovina
    1574.3×
  8. 8Islamabadlow-cost sensorsIslamabad, Pakistan
    1564.2×
  9. 9Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1554.1×
  10. 10ObrenovacCentral Serbia, Serbia
    1544.0×
  11. 11LazarevacCentral Serbia, Serbia
    1533.9×
  12. 12SmederevoCentral Serbia, Serbia
    1503.7×
  13. 13ZemunCentral Serbia, Serbia
    1453.6×
  14. 14KraljevoCentral Serbia, Serbia
    1423.5×
  15. 14Karachilow-cost sensorsSindh, Pakistan
    1423.5×
  16. 16Novi SadVojvodina, Serbia
    1403.4×
  17. 17DushanbeDushanbe, Tajikistan
    1313.2×
  18. 18Novi PazarCentral Serbia, Serbia
    1293.1×
  19. 19Dhakalow-cost sensorsDhaka Division, Bangladesh
    1283.1×
  20. 20KolkataWest Bengal, India
    1273.1×
  21. 21TravnikFederation of B&H, Bosnia and Herzegovina
    1263.0×
  22. 22ValjevoCentral Serbia, Serbia
    1233.0×
  23. 23UžiceCentral Serbia, Serbia
    1222.9×
  24. 24HyderabadTelangana, India
    1212.9×
  25. 25MumbaiMaharashtra, India
    1162.8×
  26. 26CodleaBrașov County, Romania
    1152.7×
  27. 27ČačakCentral Serbia, Serbia
    1132.7×
  28. 27Santa Anita - Los FicusLima region, Peru
    1132.7×
  29. 29Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    1132.7×
  30. 29KragujevacCentral Serbia, Serbia
    1132.7×
  31. 31BelgradeCentral Serbia, Serbia
    1122.7×
  32. 32NišCentral Serbia, Serbia
    1102.6×
  33. 33ĆuprijaCentral Serbia, Serbia
    1072.5×
  34. 34SarajevoFederation of B&H, Bosnia and Herzegovina
    1052.5×
  35. 35NyíregyházaSzabolcs-Szatmár-Bereg, Hungary
    1042.4×
  36. 35MilanLombardy, Italy
    1042.4×
  37. 37Kathmandulow-cost sensorsBagmati Province, Nepal
    1032.4×
  38. 37BeijingBeijing, China
    1032.4×
  39. 39SremčicaCentral Serbia, Serbia
    1022.4×
  40. 39GyőrGyőr-Moson-Sopron, Hungary
    1022.4×
  41. 39FutogVojvodina, Serbia
    1022.4×
  42. 42ChennaiTamil Nadu, India
    1012.4×
  43. 43BaghdadBaghdad, Iraq
    1012.4×
  44. 44NacimientoBiobio, Chile
    992.3×
  45. 45PančevoVojvodina, Serbia
    992.3×
  46. 46PirotCentral Serbia, Serbia
    972.3×
  47. 47ZgierzŁódź Voivodeship, Poland
    962.2×
  48. 48MiskolcBorsod-Abaúj-Zemplén, Hungary
    952.2×
  49. 48BihaćFederation of B&H, Bosnia and Herzegovina
    952.2×
  50. 50RužomberokŽilina Region, Slovakia
    942.2×
  51. 51CairoCairo, Egypt
    942.2×
  52. 52ShanghaiShanghai, China
    942.1×
  53. 53Bang NaBangkok, Thailand
    942.1×
  54. 54KigaliKigali, Rwanda
    932.1×
  55. 55JakartaJakarta, Indonesia
    922.1×
  56. 56HanoiHanoi, Vietnam
    922.1×
  57. 57Bitterfeld-WolfenSaxony-Anhalt, Germany
    922.1×
  58. 58ChaozhouTaiwan, Taiwan
    912.1×
  59. 59Lagoslow-cost sensorsLagos, Nigeria
    912.0×
  60. 59ŻywiecSilesia, Poland
    912.0×
  61. 61EsztergomKomárom-Esztergom, Hungary
    912.0×
  62. 62BartlettTennessee, United States
    902.0×
  63. 63IaşiIași County, Romania
    902.0×
  64. 64BucharestBucharest, Romania
    892.0×
  65. 65DunaújvárosFejér, Hungary
    892.0×
  66. 66WłocławekKujawsko-Pomorskie, Poland
    881.9×
  67. 67RadomskoŁódź Voivodeship, Poland
    881.9×
  68. 68Silao de la VictoriaGuanajuato, Mexico
    871.9×
  69. 69ŁaskŁódź Voivodeship, Poland
    861.9×
  70. 70KościanGreater Poland, Poland
    861.9×
  71. 71ŁukówLublin, Poland
    851.8×
  72. 71MartinŽilina Region, Slovakia
    851.8×
  73. 71LučenecBanská Bystrica Region, Slovakia
    851.8×
  74. 74OlomoucOlomouc Region, Czechia
    851.8×
  75. 74CuranilahueBiobio, Chile
    851.8×
  76. 76FengshanTakao, Taiwan
    841.8×
  77. 76NitraNitra Region, Slovakia
    841.8×
  78. 78SenicaTrnava Region, Slovakia
    841.8×
  79. 79KaliszGreater Poland, Poland
    841.8×
  80. 80ZvolenBanská Bystrica Region, Slovakia
    831.8×
  81. 81HualpénBiobio, Chile
    831.8×
  82. 82West MemphisArkansas, United States
    821.7×
  83. 83VeszprémVeszprém, Hungary
    821.7×
  84. 84Jastrzębie ZdrójSilesia, Poland
    821.7×
  85. 85KutnoŁódź Voivodeship, Poland
    821.7×
  86. 86Bielsko-BialaSilesia, Poland
    811.7×
  87. 87PúchovTrenčín Region, Slovakia
    811.7×
  88. 87BirminghamAlabama, United States
    811.7×
  89. 89Czechowice-DziedziceSilesia, Poland
    811.7×
  90. 90KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    801.6×
  91. 90PécsBaranya, Hungary
    801.6×
  92. 90ČadcaŽilina Region, Slovakia
    801.6×
  93. 93KomárnoNitra Region, Slovakia
    801.6×
  94. 94Samut SakhonSamut Sakhon, Thailand
    801.6×
  95. 95Nong KhaemBangkok, Thailand
    791.6×
  96. 96Asunciónlow-cost sensorsAsuncion, Paraguay
    791.6×
  97. 97RuseRuse, Bulgaria
    791.6×
  98. 97JarosławSubcarpathia, Poland
    791.6×
  99. 99Jacobo HunterArequipa, Peru
    781.6×
  100. 100HernandoMississippi, United States
    781.6×
  101. 101Ban Samae DamBangkok, Thailand
    771.5×
  102. 102ZamośćLublin, Poland
    771.5×
  103. 103DębicaSubcarpathia, Poland
    771.5×
  104. 104Cluj-NapocaCluj County, Romania
    771.5×
  105. 104Naucalpan de JuárezMéxico, Mexico
    771.5×
  106. 104CoronelBiobio, Chile
    771.5×
  107. 107PrešovPrešov Region, Slovakia
    761.5×
  108. 107Bang Bo DistrictSamut Prakan, Thailand
    761.5×
  109. 109PezinokBratislava Region, Slovakia
    761.5×
  110. 109Little RockArkansas, United States
    761.5×
  111. 111Wan ChaiWan Chai, Hong Kong
    761.5×
  112. 112León de los AldamaGuanajuato, Mexico
    761.5×
  113. 113ShreveportLouisiana, United States
    761.5×
  114. 114Şabāḩ as SālimMubārak al Kabīr, Kuwait
    751.5×
  115. 114Puerto VarasLos Lagos Region, Chile
    751.5×
  116. 114Khlong Sam WaBangkok, Thailand
    751.5×
  117. 117Istanbullow-cost sensorsIstanbul, Turkey
    751.5×
  118. 118SzegedCsongrád, Hungary
    751.5×
  119. 119RzeszówSubcarpathia, Poland
    751.5×
  120. 119OtwockMazovia, Poland
    751.5×
  121. 121TocopillaAntofagasta, Chile
    741.4×
  122. 122ManamaManama, Bahrain
    741.4×
  123. 122CraiovaDolj, Romania
    741.4×
  124. 122KaohsiungTakao, Taiwan
    741.4×
  125. 122TemucoAraucania, Chile
    741.4×
  126. 126AntananarivoAnalamanga, Madagascar
    731.4×
  127. 127ŻyrardówMazovia, Poland
    731.4×
  128. 127KłodzkoLower Silesia, Poland
    731.4×
  129. 127Baton RougeLouisiana, United States
    731.4×
  130. 130PruszkówMazovia, Poland
    731.4×
  131. 131NiskoSubcarpathia, Poland
    721.4×
  132. 131Banská BystricaBanská Bystrica Region, Slovakia
    721.4×
  133. 131Falconara MarittimaThe Marches, Italy
    721.4×
  134. 134TarnówLesser Poland, Poland
    721.4×
  135. 134Skarżysko-KamiennaŚwiętokrzyskie, Poland
    721.4×
  136. 136Almatylow-cost sensorsAlmaty, Kazakhstan
    721.4×
  137. 136GuangzhouGuangdong, China
    721.4×
  138. 136JacksonMississippi, United States
    721.4×
  139. 139Liptovský Mikulᚎilina Region, Slovakia
    721.4×
  140. 139PřerovOlomouc Region, Czechia
    721.4×
  141. 139Gorzów WielkopolskiLubusz, Poland
    721.4×
  142. 139Villa Poeta José Gálvez BarrenecheaLima region, Peru
    721.4×
  143. 143BangkokBangkok, Thailand
    721.3×
  144. 143VillarricaAraucania, Chile
    721.3×
  145. 143Imperial BeachCalifornia, United States
    721.3×
  146. 146BrnoSouth Moravian, Czechia
    711.3×
  147. 147KrosnoSubcarpathia, Poland
    711.3×
  148. 147ErlunTaiwan, Taiwan
    711.3×
  149. 149San ClementeIca, Peru
    711.3×
  150. 150PrzemyślSubcarpathia, Poland
    711.3×
  151. 150MalackyBratislava Region, Slovakia
    711.3×
  152. 152Ang Mo Kio New TownSingapore
    711.3×
  153. 152TrenčínTrenčín Region, Slovakia
    711.3×
  154. 152ŻaryLubusz, Poland
    711.3×
  155. 155Botevgradlow-cost sensorsSofia, Bulgaria
    711.3×
  156. 155JasłoSubcarpathia, Poland
    711.3×
  157. 155ToméBiobio, Chile
    711.3×
  158. 158BratislavaBratislava Region, Slovakia
    701.3×
  159. 158ŽideniceSouth Moravian, Czechia
    701.3×
  160. 158Lat KrabangBangkok, Thailand
    701.3×
  161. 161TrnavaTrnava Region, Slovakia
    701.3×
  162. 161Saphan SungBangkok, Thailand
    701.3×
  163. 163Jurong WestSingapore
    701.3×
  164. 163ConcónValparaiso, Chile
    701.3×
  165. 165Medina Estateslow-cost sensorsGreater Accra, Ghana
    701.3×
  166. 165San Francisco De BorjaLima region, Peru
    701.3×
  167. 167Ban Khlong PrawetBangkok, Thailand
    691.3×
  168. 167RoveretoTrentino-Alto Adige, Italy
    691.3×
  169. 167TalcahuanoBiobio, Chile
    691.3×
  170. 167AntofagastaAntofagasta, Chile
    691.3×
  171. 171EwingNew Jersey, United States
    691.3×
  172. 172RacibórzSilesia, Poland
    691.3×
  173. 172ChiguayanteBiobio, Chile
    691.3×
  174. 174Addis AbabaAddis Ababa, Ethiopia
    691.2×
  175. 174AricaArica y Parinacota Region, Chile
    691.2×
  176. 176AugustówPodlasie, Poland
    691.2×
  177. 176OurenseGalicia, Spain
    691.2×
  178. 178SenecBratislava Region, Slovakia
    691.2×
  179. 178Viña del MarValparaiso, Chile
    691.2×
  180. 178LafayetteLouisiana, United States
    691.2×
  181. 181LegionowoMazovia, Poland
    681.2×
  182. 182Phra PradaengSamut Prakan, Thailand
    681.2×
  183. 182Vientianelow-cost sensorsVientiane Prefecture, Laos
    681.2×
  184. 182ŽilinaŽilina Region, Slovakia
    681.2×
  185. 182HualquiBiobio, Chile
    681.2×
  186. 186BardejovPrešov Region, Slovakia
    681.2×
  187. 186Tuen MunTuen Mun, Hong Kong
    681.2×
  188. 186San Pedro de la PazBiobio, Chile
    681.2×
  189. 189Puente AltoSantiago Metropolitan, Chile
    681.2×
  190. 190OpoleOpole Voivodeship, Poland
    681.2×
  191. 191DziałdowoWarmia-Masuria, Poland
    671.2×
  192. 192BorCentral Serbia, Serbia
    671.2×
  193. 192OsnabrückLower Saxony, Germany
    671.2×
  194. 192SantiagoSantiago Metropolitan, Chile
    671.2×
  195. 192La UniónLos Ríos Region, Chile
    671.2×
  196. 196CallaoCallao, Peru
    671.2×
  197. 196Khan Na YaoBangkok, Thailand
    671.2×
  198. 198Samut PrakanSamut Prakan, Thailand
    671.2×
  199. 198KrakówLesser Poland, Poland
    671.2×
  200. 198VigoGalicia, Spain
    671.2×

Top 200 of 2,273 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, October 23, 2024, smogrank.com/history/2024-10-23 (accessed 3 Oct 2026).

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