SmogRank / History / January 24, 2024

Most polluted cities on January 24, 2024

2,059 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 360.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 24, 2024. All episodes.

← N'Djamena 360.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for January 24, 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. 1N'DjamenaN’Djaména, Chad
    500+24.0×
  2. 2DelhiDelhi, India
    48121.1×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    47921.0×
  4. 4Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    29914.9×
  5. 5Dhakalow-cost sensorsDhaka Division, Bangladesh
    28714.1×
  6. 6PljevljaPljevlja, Montenegro
    28514.0×
  7. 7Islamabadlow-cost sensorsIslamabad, Pakistan
    27013.0×
  8. 8Ulan BatorUlaanbaatar, Mongolia
    26912.9×
  9. 9KolkataWest Bengal, India
    26312.5×
  10. 10SarajevoFederation of B&H, Bosnia and Herzegovina
    23710.8×
  11. 11Karachilow-cost sensorsSindh, Pakistan
    2209.7×
  12. 12Abujalow-cost sensorsFCT, Nigeria
    2018.4×
  13. 13TetovoTetovo, North Macedonia
    1988.2×
  14. 14NišCentral Serbia, Serbia
    1796.4×
  15. 15KigaliKigali, Rwanda
    1735.8×
  16. 16Almatylow-cost sensorsAlmaty, Kazakhstan
    1685.3×
  17. 17CapannoriTuscany, Italy
    1655.1×
  18. 18BitolaBitola, North Macedonia
    1644.9×
  19. 19Botevgradlow-cost sensorsSofia, Bulgaria
    1634.9×
  20. 20PančevoVojvodina, Serbia
    1634.8×
  21. 21Kathmandulow-cost sensorsBagmati Province, Nepal
    1624.7×
  22. 22YangonYangon, Myanmar
    1614.7×
  23. 23HyderabadTelangana, India
    1614.7×
  24. 24Samut SakhonSamut Sakhon, Thailand
    1604.6×
  25. 25SalorTashkent Region, Uzbekistan
    1604.5×
  26. 26SukhothaiSukhothai, Thailand
    1594.5×
  27. 27LazarevacCentral Serbia, Serbia
    1594.4×
  28. 28KanchanaburiKanchanaburi, Thailand
    1584.4×
  29. 29LampangLampang, Thailand
    1584.3×
  30. 30Nong KhaemBangkok, Thailand
    1554.1×
  31. 31RatchaburiRatchaburi, Thailand
    1554.1×
  32. 32Mae SotTak, Thailand
    1544.0×
  33. 33AlessandriaPiedmont, Italy
    1533.9×
  34. 34DushanbeDushanbe, Tajikistan
    1533.8×
  35. 35MumbaiMaharashtra, India
    1493.7×
  36. 36Nakhon PathomNakhon Pathom, Thailand
    1453.6×
  37. 37ZemunCentral Serbia, Serbia
    1453.5×
  38. 38Lat KrabangBangkok, Thailand
    1403.4×
  39. 39PesaroThe Marches, Italy
    1393.4×
  40. 40Khlong Sam WaBangkok, Thailand
    1363.3×
  41. 41TurinPiedmont, Italy
    1363.3×
  42. 42LleidaCatalonia, Spain
    1353.3×
  43. 43Ban Samae DamBangkok, Thailand
    1333.2×
  44. 44Bang NaBangkok, Thailand
    1333.2×
  45. 45PristinaPristina, Kosovo
    1313.2×
  46. 45Khlong LuangPathum Thani, Thailand
    1313.2×
  47. 47PhraePhrae, Thailand
    1303.1×
  48. 48Lak SiBangkok, Thailand
    1293.1×
  49. 49PhetchaburiPhetchaburi, Thailand
    1243.0×
  50. 50BelgradeCentral Serbia, Serbia
    1233.0×
  51. 51CallaoCallao, Peru
    1212.9×
  52. 52KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    1202.9×
  53. 52BangkokBangkok, Thailand
    1202.9×
  54. 52Bueng KumBangkok, Thailand
    1202.9×
  55. 55Mae SaiChiang Rai, Thailand
    1192.9×
  56. 55ChennaiTamil Nadu, India
    1192.9×
  57. 57Bang Bo DistrictSamut Prakan, Thailand
    1192.8×
  58. 58Saphan SungBangkok, Thailand
    1182.8×
  59. 59UttaraditUttaradit, Thailand
    1172.8×
  60. 60Cluj-NapocaCluj County, Romania
    1172.8×
  61. 61ObrenovacCentral Serbia, Serbia
    1162.8×
  62. 62Khan Na YaoBangkok, Thailand
    1162.8×
  63. 63Bang KapiBangkok, Thailand
    1162.8×
  64. 64Phra PradaengSamut Prakan, Thailand
    1152.8×
  65. 64Mueang NonthaburiNonthaburi, Thailand
    1152.8×
  66. 66Samut PrakanSamut Prakan, Thailand
    1152.7×
  67. 66Sai MaiBangkok, Thailand
    1152.7×
  68. 68IaşiIași County, Romania
    1152.7×
  69. 69DejCluj County, Romania
    1142.7×
  70. 70BorgomaneroPiedmont, Italy
    1132.7×
  71. 71SremčicaCentral Serbia, Serbia
    1122.7×
  72. 72Suphan BuriSuphan Buri, Thailand
    1112.6×
  73. 73MiskolcBorsod-Abaúj-Zemplén, Hungary
    1102.6×
  74. 74Ban ChangRayong, Thailand
    1092.6×
  75. 75ColomboWestern Province, Sri Lanka
    1092.6×
  76. 76Nong ChokBangkok, Thailand
    1072.5×
  77. 76EtwatwaGauteng, South Africa
    1072.5×
  78. 78KavadarciKavadarci, North Macedonia
    1072.5×
  79. 79Laem ChabangChon Buri, Thailand
    1062.5×
  80. 80Falconara MarittimaThe Marches, Italy
    1052.5×
  81. 81Ban Khlong PrawetBangkok, Thailand
    1042.5×
  82. 82Grande PrairieAlberta, Canada
    1032.4×
  83. 83TratTrat, Thailand
    1022.4×
  84. 83ManlleuCatalonia, Spain
    1022.4×
  85. 85LamphunLamphun, Thailand
    1022.4×
  86. 85Si Maha PhotPrachin Buri, Thailand
    1022.4×
  87. 85Mollet del VallèsCatalonia, Spain
    1022.4×
  88. 88RayongRayong, Thailand
    1012.4×
  89. 89Kamphaeng PhetKamphaeng Phet, Thailand
    1012.4×
  90. 90AstanaAstana, Kazakhstan
    992.3×
  91. 90ShenyangLiaoning, China
    992.3×
  92. 92HualpénBiobio, Chile
    982.3×
  93. 93KošiceKošice Region, Slovakia
    982.3×
  94. 93PhayaoPhayao, Thailand
    982.3×
  95. 95PhichitPhichit, Thailand
    972.2×
  96. 96HanoiHanoi, Vietnam
    972.2×
  97. 96Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    972.2×
  98. 98Chiang RaiChiang Rai, Thailand
    962.2×
  99. 98JesiThe Marches, Italy
    962.2×
  100. 100NanNan, Thailand
    952.2×
  101. 101Ban Talat BuengChon Buri, Thailand
    952.2×
  102. 102PrievidzaTrenčín Region, Slovakia
    942.2×
  103. 103Tuen MunTuen Mun, Hong Kong
    942.2×
  104. 104Şabāḩ as SālimMubārak al Kabīr, Kuwait
    932.1×
  105. 104Hua HinPrachuap Khiri Khan, Thailand
    932.1×
  106. 106HumennéPrešov Region, Slovakia
    932.1×
  107. 107VelesVeles, North Macedonia
    932.1×
  108. 108Kampalalow-cost sensorsCentral Region, Uganda
    932.1×
  109. 109Vranov nad TopľouPrešov Region, Slovakia
    922.1×
  110. 110Nakhon SawanNakhon Sawan, Thailand
    922.1×
  111. 110Klagenfurt am WörtherseeCarinthia, Austria
    922.1×
  112. 112Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    922.1×
  113. 113KochaniKochani, North Macedonia
    912.1×
  114. 114HarrisburgPennsylvania, United States
    912.0×
  115. 115Chiang MaiChiang Mai, Thailand
    912.0×
  116. 116PodgoricaPodgorica, Montenegro
    912.0×
  117. 117Wan ChaiWan Chai, Hong Kong
    912.0×
  118. 118Addis AbabaAddis Ababa, Ethiopia
    902.0×
  119. 118WolfsbergCarinthia, Austria
    902.0×
  120. 120OrkneyNorth West, South Africa
    902.0×
  121. 121FréjusProvence-Alpes-Côte d'Azur, France
    892.0×
  122. 122CarlislePennsylvania, United States
    892.0×
  123. 123SkopjeGrad Skopje, North Macedonia
    881.9×
  124. 124GrazStyria, Austria
    881.9×
  125. 125ChanthaburiChanthaburi, Thailand
    881.9×
  126. 126LimaLima Province, Peru
    871.9×
  127. 126YorkPennsylvania, United States
    871.9×
  128. 128Santa Anita - Los FicusLima region, Peru
    871.9×
  129. 129EdmontonAlberta, Canada
    871.9×
  130. 130MaspalomasCanary Islands, Spain
    871.9×
  131. 131LyonAuvergne-Rhône-Alpes, France
    861.9×
  132. 132Spišská Nová VesKošice Region, Slovakia
    861.9×
  133. 133BensalemPennsylvania, United States
    861.9×
  134. 134SantiagoSantiago Metropolitan, Chile
    861.8×
  135. 135HandlováTrenčín Region, Slovakia
    851.8×
  136. 136San Tung Chung HangIslands, Hong Kong
    841.8×
  137. 137Sing BuriSing Buri, Thailand
    841.8×
  138. 138BeneventoCampania, Italy
    841.8×
  139. 138Puente AltoSantiago Metropolitan, Chile
    841.8×
  140. 140RuseRuse, Bulgaria
    831.8×
  141. 140LexingtonNorth Carolina, United States
    831.8×
  142. 142Las Palmas de Gran CanariaCanary Islands, Spain
    831.7×
  143. 143HagerstownMaryland, United States
    831.7×
  144. 144Tin Shui WaiYuen Long, Hong Kong
    821.7×
  145. 144West MifflinPennsylvania, United States
    821.7×
  146. 146Chai NatChai Nat, Thailand
    821.7×
  147. 146MentonProvence-Alpes-Côte d'Azur, France
    821.7×
  148. 148LancasterPennsylvania, United States
    821.7×
  149. 149CraiovaDolj, Romania
    821.7×
  150. 150Sevlievolow-cost sensorsGabrovo, Bulgaria
    811.7×
  151. 150SaraburiSaraburi, Thailand
    811.7×
  152. 150ŽilinaŽilina Region, Slovakia
    811.7×
  153. 150PartizánskeTrenčín Region, Slovakia
    811.7×
  154. 154PhetchabunPhetchabun, Thailand
    811.7×
  155. 155BarcelonaCatalonia, Spain
    811.7×
  156. 155LebanonPennsylvania, United States
    811.7×
  157. 157Novi SadVojvodina, Serbia
    801.7×
  158. 158BurnsvilleMinnesota, United States
    801.7×
  159. 158SteubenvilleOhio, United States
    801.7×
  160. 160Lop BuriLopburi, Thailand
    801.6×
  161. 160GuangzhouGuangdong, China
    801.6×
  162. 162GivorsAuvergne-Rhône-Alpes, France
    801.6×
  163. 163PécsBaranya, Hungary
    801.6×
  164. 164AlgiersAlgiers, Algeria
    801.6×
  165. 165AnconaThe Marches, Italy
    791.6×
  166. 166IlindenIlinden, North Macedonia
    791.6×
  167. 167VictoriaCentral and Western, Hong Kong
    791.6×
  168. 168TrenčínTrenčín Region, Slovakia
    781.6×
  169. 168RengoO'Higgins Region, Chile
    781.6×
  170. 170Kwai ChungKwai Tsing District, Hong Kong
    781.6×
  171. 170CuencaCastille-La Mancha, Spain
    781.6×
  172. 172MukdahanMukdahan, Thailand
    771.6×
  173. 172Viña del MarValparaiso, Chile
    771.6×
  174. 174Santa Cruz de TenerifeCanary Islands, Spain
    771.5×
  175. 175Tsuen WanTsuen Wan, Hong Kong
    771.5×
  176. 175ZvolenBanská Bystrica Region, Slovakia
    771.5×
  177. 177Mong KokYau Tsim Mong District, Hong Kong
    771.5×
  178. 178Tai PoTai Po, Hong Kong
    771.5×
  179. 178RancaguaO'Higgins Region, Chile
    771.5×
  180. 178CoronelBiobio, Chile
    771.5×
  181. 178State CollegePennsylvania, United States
    771.5×
  182. 182East RidgeTennessee, United States
    771.5×
  183. 183AranyaprathetSa Kaeo, Thailand
    761.5×
  184. 183VigoGalicia, Spain
    761.5×
  185. 183Fort St. JohnBritish Columbia, Canada
    761.5×
  186. 186NitraNitra Region, Slovakia
    761.5×
  187. 186ValdemoroMadrid, Spain
    761.5×
  188. 188ReadingPennsylvania, United States
    761.5×
  189. 189Nakhon NayokNakhon Nayok, Thailand
    761.5×
  190. 190CastresOccitanie, France
    751.5×
  191. 190ScaggsvilleMaryland, United States
    751.5×
  192. 192AricaArica y Parinacota Region, Chile
    751.5×
  193. 192Lexingtonlow-cost sensorsMassachusetts, United States
    751.5×
  194. 192FairbanksAlaska, United States
    751.5×
  195. 195MidrandGauteng, South Africa
    751.5×
  196. 195Sha TinSha Tin, Hong Kong
    751.5×
  197. 195OurenseGalicia, Spain
    751.5×
  198. 195AshburnVirginia, United States
    751.5×
  199. 199VolosThessaly, Greece
    751.5×
  200. 199CauquenesMaule Region, Chile
    751.5×

Top 200 of 2,059 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, January 24, 2024, smogrank.com/history/2024-01-24 (accessed 3 Oct 2026).

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