SmogRank / History / January 23, 2024

Most polluted cities on January 23, 2024

2,074 cities ranked by their average PM2.5 over the day; the worst was Dhaka, Bangladesh, at 280.0 µg/m³. Each city's own local calendar day.

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

← Dhaka 280.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 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. 1Dhakalow-cost sensorsDhaka Division, Bangladesh
    41018.7×
  2. 2DelhiDelhi, India
    35616.9×
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    34216.4×
  4. 4KolkataWest Bengal, India
    31215.4×
  5. 5Ga-RankuwaNorth West, South Africa
    31015.3×
  6. 6Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    30615.2×
  7. 7SarajevoFederation of B&H, Bosnia and Herzegovina
    28914.3×
  8. 7PljevljaPljevlja, Montenegro
    28914.3×
  9. 9Islamabadlow-cost sensorsIslamabad, Pakistan
    28013.7×
  10. 10Ulan BatorUlaanbaatar, Mongolia
    26912.9×
  11. 11N'DjamenaN’Djaména, Chad
    25111.7×
  12. 12Abujalow-cost sensorsFCT, Nigeria
    24011.0×
  13. 13BitolaBitola, North Macedonia
    1857.0×
  14. 14Karachilow-cost sensorsSindh, Pakistan
    1826.6×
  15. 15TetovoTetovo, North Macedonia
    1776.1×
  16. 16PristinaPristina, Kosovo
    1735.8×
  17. 17LazarevacCentral Serbia, Serbia
    1725.7×
  18. 18KigaliKigali, Rwanda
    1705.5×
  19. 19SalorTashkent Region, Uzbekistan
    1675.2×
  20. 20Almatylow-cost sensorsAlmaty, Kazakhstan
    1665.1×
  21. 21PančevoVojvodina, Serbia
    1655.0×
  22. 22ZemunCentral Serbia, Serbia
    1634.8×
  23. 23KavadarciKavadarci, North Macedonia
    1624.7×
  24. 24Kathmandulow-cost sensorsBagmati Province, Nepal
    1614.7×
  25. 25ObrenovacCentral Serbia, Serbia
    1614.6×
  26. 26KanchanaburiKanchanaburi, Thailand
    1614.6×
  27. 27NišCentral Serbia, Serbia
    1594.5×
  28. 28DejCluj County, Romania
    1594.5×
  29. 29DushanbeDushanbe, Tajikistan
    1594.4×
  30. 30SkopjeGrad Skopje, North Macedonia
    1594.4×
  31. 31AranyaprathetSa Kaeo, Thailand
    1574.3×
  32. 32LampangLampang, Thailand
    1554.1×
  33. 32Khlong LuangPathum Thani, Thailand
    1554.1×
  34. 34Si Maha PhotPrachin Buri, Thailand
    1554.0×
  35. 35SremčicaCentral Serbia, Serbia
    1554.0×
  36. 36SukhothaiSukhothai, Thailand
    1544.0×
  37. 37YangonYangon, Myanmar
    1544.0×
  38. 38Nong KhaemBangkok, Thailand
    1543.9×
  39. 39Khlong Sam WaBangkok, Thailand
    1533.9×
  40. 40Lak SiBangkok, Thailand
    1523.8×
  41. 41Samut SakhonSamut Sakhon, Thailand
    1523.8×
  42. 42Cluj-NapocaCluj County, Romania
    1503.7×
  43. 43Lat KrabangBangkok, Thailand
    1503.7×
  44. 44Khan Na YaoBangkok, Thailand
    1493.7×
  45. 45Suphan BuriSuphan Buri, Thailand
    1483.6×
  46. 46Lop BuriLopburi, Thailand
    1463.6×
  47. 47Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1443.5×
  48. 48MiskolcBorsod-Abaúj-Zemplén, Hungary
    1423.5×
  49. 49KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    1413.5×
  50. 50Nong ChokBangkok, Thailand
    1413.5×
  51. 51MumbaiMaharashtra, India
    1403.4×
  52. 51Mueang NonthaburiNonthaburi, Thailand
    1403.4×
  53. 53BelgradeCentral Serbia, Serbia
    1393.4×
  54. 54KošiceKošice Region, Slovakia
    1383.4×
  55. 55Sing BuriSing Buri, Thailand
    1373.3×
  56. 56IlindenIlinden, North Macedonia
    1373.3×
  57. 57SofiaSofia-Capital, Bulgaria
    1363.3×
  58. 58Bang NaBangkok, Thailand
    1343.3×
  59. 59ShenyangLiaoning, China
    1343.3×
  60. 60SaraburiSaraburi, Thailand
    1333.2×
  61. 61Ban Samae DamBangkok, Thailand
    1333.2×
  62. 61Bueng KumBangkok, Thailand
    1333.2×
  63. 63Nakhon PathomNakhon Pathom, Thailand
    1333.2×
  64. 64PartizánskeTrenčín Region, Slovakia
    1323.2×
  65. 65RatchaburiRatchaburi, Thailand
    1323.2×
  66. 66Saphan SungBangkok, Thailand
    1313.2×
  67. 67HyderabadTelangana, India
    1313.2×
  68. 68ManamaManama, Bahrain
    1293.1×
  69. 69Sai MaiBangkok, Thailand
    1283.1×
  70. 70Bang KapiBangkok, Thailand
    1273.1×
  71. 71PhraePhrae, Thailand
    1263.0×
  72. 72HandlováTrenčín Region, Slovakia
    1263.0×
  73. 73BangkokBangkok, Thailand
    1253.0×
  74. 74Bang Bo DistrictSamut Prakan, Thailand
    1243.0×
  75. 75PrievidzaTrenčín Region, Slovakia
    1233.0×
  76. 76AlessandriaPiedmont, Italy
    1222.9×
  77. 77NitraNitra Region, Slovakia
    1222.9×
  78. 78Phra PradaengSamut Prakan, Thailand
    1212.9×
  79. 79Ban Khlong PrawetBangkok, Thailand
    1212.9×
  80. 80PodgoricaPodgorica, Montenegro
    1202.9×
  81. 81Nakhon SawanNakhon Sawan, Thailand
    1202.9×
  82. 82PhetchabunPhetchabun, Thailand
    1182.8×
  83. 83TratTrat, Thailand
    1182.8×
  84. 84TrenčínTrenčín Region, Slovakia
    1182.8×
  85. 85ChaiyaphumChaiyaphum, Thailand
    1182.8×
  86. 86Chai NatChai Nat, Thailand
    1172.8×
  87. 87Spišská Nová VesKošice Region, Slovakia
    1172.8×
  88. 87Haskovolow-cost sensorsHaskovo, Bulgaria
    1172.8×
  89. 89Gabrovolow-cost sensorsGabrovo, Bulgaria
    1162.8×
  90. 90Laem ChabangChon Buri, Thailand
    1152.7×
  91. 91KochaniKochani, North Macedonia
    1132.7×
  92. 92Samut PrakanSamut Prakan, Thailand
    1132.7×
  93. 93VelesVeles, North Macedonia
    1122.7×
  94. 94JeddahMecca Region, Saudi Arabia
    1112.6×
  95. 94TrnavaTrnava Region, Slovakia
    1112.6×
  96. 96NanNan, Thailand
    1102.6×
  97. 96ŽilinaŽilina Region, Slovakia
    1102.6×
  98. 98LancasterPennsylvania, United States
    1092.6×
  99. 99Sevlievolow-cost sensorsGabrovo, Bulgaria
    1072.5×
  100. 100LamphunLamphun, Thailand
    1072.5×
  101. 101PhichitPhichit, Thailand
    1042.5×
  102. 101TurinPiedmont, Italy
    1042.5×
  103. 103Vranov nad TopľouPrešov Region, Slovakia
    1042.5×
  104. 103UttaraditUttaradit, Thailand
    1042.5×
  105. 105Ban ChangRayong, Thailand
    1042.4×
  106. 106PřerovOlomouc Region, Czechia
    1032.4×
  107. 107ColomboWestern Province, Sri Lanka
    1022.4×
  108. 108OlomoucOlomouc Region, Czechia
    1022.4×
  109. 109Ban Talat BuengChon Buri, Thailand
    1012.4×
  110. 110Nakhon NayokNakhon Nayok, Thailand
    1002.4×
  111. 111ValdemoroMadrid, Spain
    992.3×
  112. 112HumennéPrešov Region, Slovakia
    992.3×
  113. 112ChennaiTamil Nadu, India
    992.3×
  114. 114AstanaAstana, Kazakhstan
    992.3×
  115. 114ZlínZlín, Czechia
    992.3×
  116. 116Las Palmas de Gran CanariaCanary Islands, Spain
    982.3×
  117. 117Mae SaiChiang Rai, Thailand
    982.3×
  118. 118WolfsbergCarinthia, Austria
    972.3×
  119. 119RayongRayong, Thailand
    972.3×
  120. 119LoeiLoei, Thailand
    972.3×
  121. 121Buri RamBuriram, Thailand
    972.2×
  122. 122HualpénBiobio, Chile
    962.2×
  123. 123Şabāḩ as SālimMubārak al Kabīr, Kuwait
    962.2×
  124. 124Novi SadVojvodina, Serbia
    952.2×
  125. 125SurinSurin, Thailand
    952.2×
  126. 126Kamphaeng PhetKamphaeng Phet, Thailand
    942.1×
  127. 127Addis AbabaAddis Ababa, Ethiopia
    942.1×
  128. 128ŽideniceSouth Moravian, Czechia
    932.1×
  129. 129BrnoSouth Moravian, Czechia
    932.1×
  130. 130CarlislePennsylvania, United States
    932.1×
  131. 131Red DeerAlberta, Canada
    932.1×
  132. 132ChanthaburiChanthaburi, Thailand
    922.1×
  133. 133LleidaCatalonia, Spain
    922.1×
  134. 134ThessaloníkiCentral Macedonia, Greece
    922.1×
  135. 135EvatonGauteng, South Africa
    912.0×
  136. 135BensalemPennsylvania, United States
    912.0×
  137. 137SenicaTrnava Region, Slovakia
    912.0×
  138. 138ManlleuCatalonia, Spain
    902.0×
  139. 139DębicaSubcarpathia, Poland
    892.0×
  140. 140GrazStyria, Austria
    892.0×
  141. 141YakimaWashington, United States
    881.9×
  142. 142CapannoriTuscany, Italy
    881.9×
  143. 143AugustówPodlasie, Poland
    881.9×
  144. 143KalasinKalasin, Thailand
    881.9×
  145. 145Skarżysko-KamiennaŚwiętokrzyskie, Poland
    881.9×
  146. 145EdmontonAlberta, Canada
    881.9×
  147. 147HarrisburgPennsylvania, United States
    881.9×
  148. 148MartinŽilina Region, Slovakia
    871.9×
  149. 148PesaroThe Marches, Italy
    871.9×
  150. 148East RidgeTennessee, United States
    871.9×
  151. 151SantiagoSantiago Metropolitan, Chile
    871.9×
  152. 152BritsNorth West, South Africa
    871.9×
  153. 153Santa Cruz de TenerifeCanary Islands, Spain
    871.9×
  154. 153DěčínÚstí nad Labem Region, Czechia
    871.9×
  155. 155Hua HinPrachuap Khiri Khan, Thailand
    871.9×
  156. 156Klagenfurt am WörtherseeCarinthia, Austria
    861.9×
  157. 157Chiang RaiChiang Rai, Thailand
    861.9×
  158. 157DunaújvárosFejér, Hungary
    861.9×
  159. 157ZnojmoSouth Moravian, Czechia
    861.9×
  160. 160Chiang MaiChiang Mai, Thailand
    861.9×
  161. 160BurnsvilleMinnesota, United States
    861.9×
  162. 162Grande PrairieAlberta, Canada
    861.8×
  163. 163Mollet del VallèsCatalonia, Spain
    851.8×
  164. 164ZgierzŁódź Voivodeship, Poland
    851.8×
  165. 164HagerstownMaryland, United States
    851.8×
  166. 164PendletonOregon, United States
    851.8×
  167. 167DziałdowoWarmia-Masuria, Poland
    851.8×
  168. 168Ubon RatchathaniUbon Ratchathani, Thailand
    851.8×
  169. 168KroměřížZlín, Czechia
    851.8×
  170. 170Khon KaenKhon Kaen, Thailand
    841.8×
  171. 171AgüimesCanary Islands, Spain
    841.8×
  172. 171VeszprémVeszprém, Hungary
    841.8×
  173. 173TeldeCanary Islands, Spain
    841.8×
  174. 173ZvolenBanská Bystrica Region, Slovakia
    841.8×
  175. 175MukdahanMukdahan, Thailand
    831.8×
  176. 175NacimientoBiobio, Chile
    831.8×
  177. 175LexingtonNorth Carolina, United States
    831.8×
  178. 175FairbanksAlaska, United States
    831.8×
  179. 179BeneventoCampania, Italy
    831.8×
  180. 179EtwatwaGauteng, South Africa
    831.8×
  181. 181LyonAuvergne-Rhône-Alpes, France
    831.7×
  182. 181YorkPennsylvania, United States
    831.7×
  183. 183ArucasCanary Islands, Spain
    821.7×
  184. 183Banská BystricaBanská Bystrica Region, Slovakia
    821.7×
  185. 183RengoO'Higgins Region, Chile
    821.7×
  186. 183Puente AltoSantiago Metropolitan, Chile
    821.7×
  187. 183CelayaGuanajuato, Mexico
    821.7×
  188. 188SzegedCsongrád, Hungary
    821.7×
  189. 188Valašské MeziříčíZlín, Czechia
    821.7×
  190. 188RancaguaO'Higgins Region, Chile
    821.7×
  191. 191HanoiHanoi, Vietnam
    821.7×
  192. 192KatowiceSilesia, Poland
    821.7×
  193. 193GuangzhouGuangdong, China
    811.7×
  194. 193BratislavaBratislava Region, Slovakia
    811.7×
  195. 195SunnysideWashington, United States
    811.7×
  196. 196MadridMadrid, Spain
    811.7×
  197. 197AlgiersAlgiers, Algeria
    811.7×
  198. 198Žiar nad HronomBanská Bystrica Region, Slovakia
    801.7×
  199. 198Prince GeorgeBritish Columbia, Canada
    801.7×
  200. 200YasothonYasothon, Thailand
    801.6×

Top 200 of 2,074 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 23, 2024, smogrank.com/history/2024-01-23 (accessed 3 Oct 2026).

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