SmogRank / History / January 27, 2024

Most polluted cities on January 27, 2024

2,021 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 346.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 27, 2024. All episodes.

← N'Djamena 346.0 µg/m³ 300 µg/m³15 WHO 24-hour guideline
Every city ranked for January 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. 1N'DjamenaN’Djaména, Chad
    500+23.1×
  2. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    27113.1×
  3. 3DelhiDelhi, India
    26912.9×
  4. 4Ulan BatorUlaanbaatar, Mongolia
    23410.6×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    23310.5×
  6. 5KolkataWest Bengal, India
    23310.5×
  7. 7Abujalow-cost sensorsFCT, Nigeria
    2199.6×
  8. 8TlaquepaqueJalisco, Mexico
    2088.9×
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    1988.2×
  10. 10SarajevoFederation of B&H, Bosnia and Herzegovina
    1887.2×
  11. 11SalorTashkent Region, Uzbekistan
    1826.7×
  12. 12Karachilow-cost sensorsSindh, Pakistan
    1816.6×
  13. 13Banja LukaSrpska, Bosnia and Herzegovina
    1766.0×
  14. 14Kampalalow-cost sensorsCentral Region, Uganda
    1695.4×
  15. 15Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1685.3×
  16. 16ShenyangLiaoning, China
    1655.1×
  17. 17Almatylow-cost sensorsAlmaty, Kazakhstan
    1645.0×
  18. 18PljevljaPljevlja, Montenegro
    1624.8×
  19. 19HyderabadTelangana, India
    1614.7×
  20. 20Kathmandulow-cost sensorsBagmati Province, Nepal
    1614.6×
  21. 21PesaroThe Marches, Italy
    1604.5×
  22. 22MumbaiMaharashtra, India
    1594.5×
  23. 23Samut SakhonSamut Sakhon, Thailand
    1554.1×
  24. 24TurinPiedmont, Italy
    1513.7×
  25. 25RatchaburiRatchaburi, Thailand
    1513.7×
  26. 26KigaliKigali, Rwanda
    1513.7×
  27. 27BeneventoCampania, Italy
    1483.6×
  28. 28PhetchaburiPhetchaburi, Thailand
    1403.4×
  29. 29Lat KrabangBangkok, Thailand
    1393.4×
  30. 30CapannoriTuscany, Italy
    1383.4×
  31. 31HanoiHanoi, Vietnam
    1383.4×
  32. 32SukhothaiSukhothai, Thailand
    1333.2×
  33. 33BitolaBitola, North Macedonia
    1323.2×
  34. 34Khlong Sam WaBangkok, Thailand
    1313.2×
  35. 35Nong KhaemBangkok, Thailand
    1303.2×
  36. 36LampangLampang, Thailand
    1293.1×
  37. 37Laem ChabangChon Buri, Thailand
    1283.1×
  38. 38Hua HinPrachuap Khiri Khan, Thailand
    1273.1×
  39. 39KanchanaburiKanchanaburi, Thailand
    1273.1×
  40. 40Bang Bo DistrictSamut Prakan, Thailand
    1263.1×
  41. 41Bang NaBangkok, Thailand
    1253.0×
  42. 42NaplesCampania, Italy
    1233.0×
  43. 43PinetownKwaZulu-Natal, South Africa
    1202.9×
  44. 44Wan ChaiWan Chai, Hong Kong
    1192.9×
  45. 45Ban Samae DamBangkok, Thailand
    1182.8×
  46. 46TetovoTetovo, North Macedonia
    1182.8×
  47. 46Lak SiBangkok, Thailand
    1182.8×
  48. 48AranyaprathetSa Kaeo, Thailand
    1172.8×
  49. 49Nong ChokBangkok, Thailand
    1162.8×
  50. 49Khan Na YaoBangkok, Thailand
    1162.8×
  51. 51Bueng KumBangkok, Thailand
    1152.7×
  52. 51Saphan SungBangkok, Thailand
    1152.7×
  53. 53Si Maha PhotPrachin Buri, Thailand
    1152.7×
  54. 53RayongRayong, Thailand
    1152.7×
  55. 55Bang KapiBangkok, Thailand
    1142.7×
  56. 56BangkokBangkok, Thailand
    1142.7×
  57. 57Ban ChangRayong, Thailand
    1122.7×
  58. 58TratTrat, Thailand
    1122.7×
  59. 59JesiThe Marches, Italy
    1112.6×
  60. 60Ban Khlong PrawetBangkok, Thailand
    1112.6×
  61. 61Phra PradaengSamut Prakan, Thailand
    1102.6×
  62. 62Chai NatChai Nat, Thailand
    1102.6×
  63. 63Samut PrakanSamut Prakan, Thailand
    1102.6×
  64. 64Mueang NonthaburiNonthaburi, Thailand
    1092.6×
  65. 64San Tung Chung HangIslands, Hong Kong
    1092.6×
  66. 66Nakhon PathomNakhon Pathom, Thailand
    1092.6×
  67. 67Khlong LuangPathum Thani, Thailand
    1082.6×
  68. 68Mae SaiChiang Rai, Thailand
    1082.6×
  69. 69PodgoricaPodgorica, Montenegro
    1082.6×
  70. 70AlessandriaPiedmont, Italy
    1072.5×
  71. 71ChennaiTamil Nadu, India
    1062.5×
  72. 72Mollet del VallèsCatalonia, Spain
    1062.5×
  73. 73Tuen MunTuen Mun, Hong Kong
    1052.5×
  74. 74Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1052.5×
  75. 75BarcelonaCatalonia, Spain
    1052.5×
  76. 76Suphan BuriSuphan Buri, Thailand
    1032.4×
  77. 77Ban Talat BuengChon Buri, Thailand
    1012.4×
  78. 78Falconara MarittimaThe Marches, Italy
    1012.4×
  79. 79PátraWest Greece, Greece
    1012.4×
  80. 79MurciaMurcia, Spain
    1012.4×
  81. 79La OrotavaCanary Islands, Spain
    1012.4×
  82. 82VictoriaCentral and Western, Hong Kong
    1002.4×
  83. 83ManlleuCatalonia, Spain
    992.3×
  84. 84OrkneyNorth West, South Africa
    992.3×
  85. 85Sai MaiBangkok, Thailand
    992.3×
  86. 86OurenseGalicia, Spain
    992.3×
  87. 87Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    982.3×
  88. 88AnconaThe Marches, Italy
    972.3×
  89. 89BucharestBucharest, Romania
    972.3×
  90. 90SaraburiSaraburi, Thailand
    962.2×
  91. 90Nakhon RatchasimaNakhon Ratchasima, Thailand
    962.2×
  92. 92AugustówPodlasie, Poland
    962.2×
  93. 93Nakhon SawanNakhon Sawan, Thailand
    962.2×
  94. 94LamphunLamphun, Thailand
    952.2×
  95. 94HualpénBiobio, Chile
    952.2×
  96. 96LleidaCatalonia, Spain
    952.2×
  97. 97GuangzhouGuangdong, China
    952.2×
  98. 98Lop BuriLopburi, Thailand
    942.1×
  99. 99Tin Shui WaiYuen Long, Hong Kong
    942.1×
  100. 100Chiang RaiChiang Rai, Thailand
    932.1×
  101. 101Santa Cruz de la PalmaCanary Islands, Spain
    932.1×
  102. 102PhraePhrae, Thailand
    932.1×
  103. 103YangonYangon, Myanmar
    922.1×
  104. 104Sau Mau PingKwun Tong District, Hong Kong
    922.1×
  105. 104ValenciaValencia, Spain
    922.1×
  106. 104TorreviejaValencia, Spain
    922.1×
  107. 104Granadilla de AbonaCanary Islands, Spain
    922.1×
  108. 104CartagenaMurcia, Spain
    922.1×
  109. 109Mong KokYau Tsim Mong District, Hong Kong
    922.1×
  110. 110BakuBaki, Azerbaijan
    912.1×
  111. 111Kamphaeng PhetKamphaeng Phet, Thailand
    912.0×
  112. 112Tsuen WanTsuen Wan, Hong Kong
    912.0×
  113. 113Sing BuriSing Buri, Thailand
    902.0×
  114. 114Sham Shui PoSham Shui Po District, Hong Kong
    892.0×
  115. 115UttaraditUttaradit, Thailand
    892.0×
  116. 116DushanbeDushanbe, Tajikistan
    892.0×
  117. 117San CarlosÑuble, Chile
    892.0×
  118. 118Tai PoTai Po, Hong Kong
    881.9×
  119. 119Chiang MaiChiang Mai, Thailand
    881.9×
  120. 120TarbesOccitanie, France
    881.9×
  121. 121Vilanova i la GeltrúCatalonia, Spain
    881.9×
  122. 122NišCentral Serbia, Serbia
    871.9×
  123. 122ChanthaburiChanthaburi, Thailand
    871.9×
  124. 124VigoGalicia, Spain
    871.9×
  125. 125CairoCairo, Egypt
    871.9×
  126. 125NanNan, Thailand
    871.9×
  127. 127PhayaoPhayao, Thailand
    861.9×
  128. 128Sainte-Geneviève-des-BoisÎle-de-France, France
    861.9×
  129. 128BorgomaneroPiedmont, Italy
    861.9×
  130. 130Sha TinSha Tin, Hong Kong
    861.9×
  131. 131Ciudad RealCastille-La Mancha, Spain
    861.8×
  132. 132KavadarciKavadarci, North Macedonia
    851.8×
  133. 133SkopjeGrad Skopje, North Macedonia
    851.8×
  134. 134Santa Cruz de TenerifeCanary Islands, Spain
    851.8×
  135. 135Barrio de PeralMurcia, Spain
    831.8×
  136. 136Nakhon NayokNakhon Nayok, Thailand
    831.7×
  137. 137PhichitPhichit, Thailand
    821.7×
  138. 138AthensAttica, Greece
    821.7×
  139. 139LazarevacCentral Serbia, Serbia
    821.7×
  140. 140ZgierzŁódź Voivodeship, Poland
    811.7×
  141. 141VelesVeles, North Macedonia
    811.7×
  142. 141TarragonaCatalonia, Spain
    811.7×
  143. 143AlgiersAlgiers, Algeria
    801.7×
  144. 144ColomboWestern Province, Sri Lanka
    801.6×
  145. 144BailénAndalusia, Spain
    801.6×
  146. 146Addis AbabaAddis Ababa, Ethiopia
    801.6×
  147. 146OviedoAsturias, Spain
    801.6×
  148. 148PhetchabunPhetchabun, Thailand
    801.6×
  149. 148WaregemFlanders, Belgium
    801.6×
  150. 148Puente AltoSantiago Metropolitan, Chile
    801.6×
  151. 151CelayaGuanajuato, Mexico
    791.6×
  152. 152CalahorraLa Rioja, Spain
    781.6×
  153. 152BogotáBogota D.C., Colombia
    781.6×
  154. 154LourdesOccitanie, France
    781.6×
  155. 155PietermaritzburgKwaZulu-Natal, South Africa
    781.6×
  156. 155PhuketPhuket, Thailand
    781.6×
  157. 155Nakhon Si ThammaratNakhon Si Thammarat, Thailand
    781.6×
  158. 158MiskolcBorsod-Abaúj-Zemplén, Hungary
    781.6×
  159. 158IzegemFlanders, Belgium
    781.6×
  160. 158ValladolidCastille and León, Spain
    781.6×
  161. 161San IsidroCanary Islands, Spain
    771.5×
  162. 161ParedesPorto, Portugal
    771.5×
  163. 163OlivetCentre-Val de Loire, France
    771.5×
  164. 163GijónAsturias, Spain
    771.5×
  165. 165FréjusProvence-Alpes-Côte d'Azur, France
    771.5×
  166. 166KalasinKalasin, Thailand
    771.5×
  167. 167CandelariaCanary Islands, Spain
    761.5×
  168. 168TrangTrang, Thailand
    751.5×
  169. 168AronaCanary Islands, Spain
    751.5×
  170. 168SallanchesAuvergne-Rhône-Alpes, France
    751.5×
  171. 168Puerto MonttLos Lagos Region, Chile
    751.5×
  172. 168IrapuatoGuanajuato, Mexico
    751.5×
  173. 173BeauvaisHauts-de-France, France
    751.5×
  174. 173Ceglie MessapicaApulia, Italy
    751.5×
  175. 175ChaiyaphumChaiyaphum, Thailand
    741.4×
  176. 175RengoO'Higgins Region, Chile
    741.4×
  177. 177CasertaCampania, Italy
    741.4×
  178. 177SantiagoSantiago Metropolitan, Chile
    741.4×
  179. 179MukdahanMukdahan, Thailand
    741.4×
  180. 179CoulommiersÎle-de-France, France
    741.4×
  181. 181CastresOccitanie, France
    741.4×
  182. 182LugoGalicia, Spain
    741.4×
  183. 182GironaCatalonia, Spain
    741.4×
  184. 182FerrolGalicia, Spain
    741.4×
  185. 185Botevgradlow-cost sensorsSofia, Bulgaria
    741.4×
  186. 185NacimientoBiobio, Chile
    741.4×
  187. 187EvatonGauteng, South Africa
    731.4×
  188. 187Silao de la VictoriaGuanajuato, Mexico
    731.4×
  189. 189VereenigingGauteng, South Africa
    731.4×
  190. 189CuranilahueBiobio, Chile
    731.4×
  191. 191JakartaJakarta, Indonesia
    731.4×
  192. 191NarónGalicia, Spain
    731.4×
  193. 191SalamancaGuanajuato, Mexico
    731.4×
  194. 194NarathiwatNarathiwat, Thailand
    721.4×
  195. 194MelunÎle-de-France, France
    721.4×
  196. 194Gasteiz / VitoriaBasque Country, Spain
    721.4×
  197. 197SevillaAndalusia, Spain
    721.4×
  198. 198Buri RamBuriram, Thailand
    721.4×
  199. 199YalaYala, Thailand
    721.4×
  200. 199RoveretoTrentino-Alto Adige, Italy
    721.4×

Top 200 of 2,021 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 27, 2024, smogrank.com/history/2024-01-27 (accessed 3 Oct 2026).

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