SmogRank / History / March 23, 2024

Most polluted cities on March 23, 2024

1,706 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 241.0 µg/m³. Each city's own local calendar day.

← N'Djamena 241.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for March 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. 1N'DjamenaN’Djaména, Chad
    33216.1×
  2. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    1927.6×
  3. 3DelhiDelhi, India
    1756.0×
  4. 4Lahorelow-cost sensorsPunjab, Pakistan
    1725.7×
  5. 5BeijingBeijing, China
    1655.1×
  6. 6KolkataWest Bengal, India
    1634.9×
  7. 7ShenyangLiaoning, China
    1634.8×
  8. 8KanchanaburiKanchanaburi, Thailand
    1594.5×
  9. 9CoyhaiqueAysén, Chile
    1594.4×
  10. 10KalasinKalasin, Thailand
    1574.3×
  11. 11YasothonYasothon, Thailand
    1564.2×
  12. 12MukdahanMukdahan, Thailand
    1564.2×
  13. 13JakartaJakarta, Indonesia
    1533.9×
  14. 14Kathmandulow-cost sensorsBagmati Province, Nepal
    1503.7×
  15. 15Roi EtRoi Et, Thailand
    1463.6×
  16. 16SurinSurin, Thailand
    1423.5×
  17. 17Amnat CharoenAmnat Charoen, Thailand
    1423.5×
  18. 18Lop BuriLopburi, Thailand
    1413.5×
  19. 19LoeiLoei, Thailand
    1383.4×
  20. 20Ubon RatchathaniUbon Ratchathani, Thailand
    1383.4×
  21. 21Si Sa KetSi Sa Ket, Thailand
    1373.3×
  22. 22MumbaiMaharashtra, India
    1313.2×
  23. 23Mae SotTak, Thailand
    1293.1×
  24. 24Nakhon RatchasimaNakhon Ratchasima, Thailand
    1293.1×
  25. 25Khon KaenKhon Kaen, Thailand
    1273.1×
  26. 26Chai NatChai Nat, Thailand
    1263.0×
  27. 27Novi PazarCentral Serbia, Serbia
    1263.0×
  28. 28Sing BuriSing Buri, Thailand
    1233.0×
  29. 29HyderabadTelangana, India
    1202.9×
  30. 30ShanghaiShanghai, China
    1202.9×
  31. 31HanoiHanoi, Vietnam
    1192.9×
  32. 32Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1192.8×
  33. 33Guatemala CityGuatemala, Guatemala
    1182.8×
  34. 34KigaliKigali, Rwanda
    1182.8×
  35. 35Islamabadlow-cost sensorsIslamabad, Pakistan
    1172.8×
  36. 36ChaiyaphumChaiyaphum, Thailand
    1172.8×
  37. 36RabinalBaja Verapaz, Guatemala
    1172.8×
  38. 38Si Maha PhotPrachin Buri, Thailand
    1162.8×
  39. 39Kampalalow-cost sensorsCentral Region, Uganda
    1152.8×
  40. 40UttaraditUttaradit, Thailand
    1142.7×
  41. 41Buri RamBuriram, Thailand
    1132.7×
  42. 42LampangLampang, Thailand
    1122.7×
  43. 43PhetchabunPhetchabun, Thailand
    1112.6×
  44. 44Sakon NakhonSakon Nakhon, Thailand
    1102.6×
  45. 44PyeongtaekGyeonggi-do, South Korea
    1102.6×
  46. 46Chiang MaiChiang Mai, Thailand
    1102.6×
  47. 47Udon ThaniUdon Thani, Thailand
    1102.6×
  48. 48NanNan, Thailand
    1092.6×
  49. 49Vientianelow-cost sensorsVientiane Prefecture, Laos
    1092.6×
  50. 50BaghdadBaghdad, Iraq
    1082.6×
  51. 50Nong KhaemBangkok, Thailand
    1082.6×
  52. 52AshgabatAshgabat, Turkmenistan
    1072.5×
  53. 53SeonghwanChungcheongnam-do, South Korea
    1072.5×
  54. 54YangonYangon, Myanmar
    1062.5×
  55. 55SaraburiSaraburi, Thailand
    1052.5×
  56. 56Khlong LuangPathum Thani, Thailand
    1042.5×
  57. 57Nong Bua LamphuNong Bua Lamphu, Thailand
    1032.4×
  58. 58LamphunLamphun, Thailand
    1032.4×
  59. 58PhichitPhichit, Thailand
    1032.4×
  60. 58CelayaGuanajuato, Mexico
    1032.4×
  61. 61TangjinChungcheongnam-do, South Korea
    1002.3×
  62. 62Nakhon SawanNakhon Sawan, Thailand
    992.3×
  63. 63JinchengFukien, Taiwan
    982.3×
  64. 64SukhothaiSukhothai, Thailand
    982.3×
  65. 64Kamphaeng PhetKamphaeng Phet, Thailand
    982.3×
  66. 66Nakhon NayokNakhon Nayok, Thailand
    972.3×
  67. 66AsanChungcheongnam-do, South Korea
    972.3×
  68. 68Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    972.3×
  69. 68YesanChungcheongnam-do, South Korea
    972.3×
  70. 70PančevoVojvodina, Serbia
    972.2×
  71. 71Prachin BuriPrachin Buri, Thailand
    962.2×
  72. 72ZemunCentral Serbia, Serbia
    962.2×
  73. 72AstanaAstana, Kazakhstan
    962.2×
  74. 72AnseongGyeonggi-do, South Korea
    962.2×
  75. 75PirotCentral Serbia, Serbia
    962.2×
  76. 76BelmopanCayo District, Belize
    952.2×
  77. 77PhraePhrae, Thailand
    942.2×
  78. 78JungpyongNorth Chungcheong, South Korea
    942.2×
  79. 78Chinch'ŏnNorth Chungcheong, South Korea
    942.2×
  80. 80AranyaprathetSa Kaeo, Thailand
    932.1×
  81. 81PubalGyeonggi-do, South Korea
    922.1×
  82. 82SarajevoFederation of B&H, Bosnia and Herzegovina
    922.1×
  83. 82Saphan SungBangkok, Thailand
    922.1×
  84. 84Bang Khun ThianBangkok, Thailand
    922.1×
  85. 85YeojuGyeonggi-do, South Korea
    922.1×
  86. 85GunsanJeollabuk-do, South Korea
    922.1×
  87. 87Mae SaiChiang Rai, Thailand
    922.1×
  88. 88Puerto AysénAysén, Chile
    912.1×
  89. 89Karachilow-cost sensorsSindh, Pakistan
    912.0×
  90. 89Suphan BuriSuphan Buri, Thailand
    912.0×
  91. 89Sai MaiBangkok, Thailand
    912.0×
  92. 92SangjuGyeongsangbuk-do, South Korea
    902.0×
  93. 92Cheongju-siNorth Chungcheong, South Korea
    902.0×
  94. 94PhayaoPhayao, Thailand
    902.0×
  95. 94Samut SakhonSamut Sakhon, Thailand
    902.0×
  96. 96Icheon-siGyeonggi-do, South Korea
    902.0×
  97. 97Mueang NonthaburiNonthaburi, Thailand
    902.0×
  98. 98Nong ChokBangkok, Thailand
    892.0×
  99. 98Hwaseong-siGyeonggi-do, South Korea
    892.0×
  100. 100Nakhon PathomNakhon Pathom, Thailand
    892.0×
  101. 101ErlinTaiwan, Taiwan
    892.0×
  102. 101OsanGyeonggi-do, South Korea
    892.0×
  103. 103ĆuprijaCentral Serbia, Serbia
    892.0×
  104. 103KoesanNorth Chungcheong, South Korea
    892.0×
  105. 105BangkokBangkok, Thailand
    881.9×
  106. 105Khan Na YaoBangkok, Thailand
    881.9×
  107. 107Phra PradaengSamut Prakan, Thailand
    881.9×
  108. 108HongseongChungcheongnam-do, South Korea
    881.9×
  109. 108HaenamJeollanam-do, South Korea
    881.9×
  110. 108CheonanChungcheongnam-do, South Korea
    881.9×
  111. 111SmederevoCentral Serbia, Serbia
    881.9×
  112. 112ChanthaburiChanthaburi, Thailand
    881.9×
  113. 112YeongdongNorth Chungcheong, South Korea
    881.9×
  114. 114CairoCairo, Egypt
    871.9×
  115. 115ChennaiTamil Nadu, India
    871.9×
  116. 116Bueng KumBangkok, Thailand
    871.9×
  117. 117Bang KapiBangkok, Thailand
    861.9×
  118. 118KraljevoCentral Serbia, Serbia
    861.9×
  119. 119HwadoGyeonggi-do, South Korea
    851.8×
  120. 120TratTrat, Thailand
    851.8×
  121. 121PhuketPhuket, Thailand
    851.8×
  122. 121IksanJeollabuk-do, South Korea
    851.8×
  123. 123ValjevoCentral Serbia, Serbia
    851.8×
  124. 124KinzanChungcheongnam-do, South Korea
    841.8×
  125. 125LazarevacCentral Serbia, Serbia
    841.8×
  126. 125Ansan-siGyeonggi-do, South Korea
    841.8×
  127. 125SaijōEhime, Japan
    841.8×
  128. 128WŏnjuGangwon-do, South Korea
    831.7×
  129. 128YeongamJeollanam-do, South Korea
    831.7×
  130. 130SeoulSeoul, South Korea
    821.7×
  131. 131YeongjuGyeongsangbuk-do, South Korea
    821.7×
  132. 132ShulinTaipei, Taiwan
    821.7×
  133. 132GwangmyeongGyeonggi-do, South Korea
    821.7×
  134. 134ChungjuNorth Chungcheong, South Korea
    821.7×
  135. 135GimcheonGyeongsangbuk-do, South Korea
    821.7×
  136. 135Accralow-cost sensorsGreater Accra, Ghana
    821.7×
  137. 137BelgradeCentral Serbia, Serbia
    811.7×
  138. 137GongjuChungcheongnam-do, South Korea
    811.7×
  139. 137AndongGyeongsangbuk-do, South Korea
    811.7×
  140. 137SejongSejong-si, South Korea
    811.7×
  141. 141Anyang-siGyeonggi-do, South Korea
    811.7×
  142. 141NiihamaEhime, Japan
    811.7×
  143. 141HualpénBiobio, Chile
    811.7×
  144. 144ColomboWestern Province, Sri Lanka
    811.7×
  145. 145PhetchaburiPhetchaburi, Thailand
    801.7×
  146. 145Ban ChangRayong, Thailand
    801.7×
  147. 145MungyeongGyeongsangbuk-do, South Korea
    801.7×
  148. 145GwangjuGyeonggi-do, South Korea
    801.7×
  149. 145KimjeJeollabuk-do, South Korea
    801.7×
  150. 150Hua HinPrachuap Khiri Khan, Thailand
    801.7×
  151. 150Samut PrakanSamut Prakan, Thailand
    801.7×
  152. 150IncheonIncheon, South Korea
    801.7×
  153. 150JeonjuJeollabuk-do, South Korea
    801.7×
  154. 154SuwonGyeonggi-do, South Korea
    801.6×
  155. 155TongyeongGyeongsangnam-do, South Korea
    801.6×
  156. 155JangheungJeollanam-do, South Korea
    801.6×
  157. 157Puente AltoSantiago Metropolitan, Chile
    801.6×
  158. 158Yangp'yŏngGyeonggi-do, South Korea
    791.6×
  159. 158NamsaJeollabuk-do, South Korea
    791.6×
  160. 160ManamaManama, Bahrain
    791.6×
  161. 160MunsanGyeonggi-do, South Korea
    791.6×
  162. 160GoseongGyeongsangnam-do, South Korea
    791.6×
  163. 160Seongnam-siGyeonggi-do, South Korea
    791.6×
  164. 164DamyangJeollanam-do, South Korea
    781.6×
  165. 164Bucheon-siGyeonggi-do, South Korea
    781.6×
  166. 166WanjuJeollabuk-do, South Korea
    781.6×
  167. 167Chiang RaiChiang Rai, Thailand
    781.6×
  168. 167ImsilJeollabuk-do, South Korea
    781.6×
  169. 169KragujevacCentral Serbia, Serbia
    781.6×
  170. 169YeonggwangJeollanam-do, South Korea
    781.6×
  171. 169TaoyuanTaiwan, Taiwan
    781.6×
  172. 172HanamGyeonggi-do, South Korea
    781.6×
  173. 172NaesŏGyeongsangnam-do, South Korea
    781.6×
  174. 174TaibaoTaiwan, Taiwan
    771.6×
  175. 174Ponca CityOklahoma, United States
    771.6×
  176. 174JeongeupJeollabuk-do, South Korea
    771.6×
  177. 177GumiGyeongsangbuk-do, South Korea
    771.5×
  178. 177Gimpo-siGyeonggi-do, South Korea
    771.5×
  179. 179LęborkPomerania, Poland
    771.5×
  180. 179ShikokuchūōEhime, Japan
    771.5×
  181. 181ObrenovacCentral Serbia, Serbia
    771.5×
  182. 181NonsanChungcheongnam-do, South Korea
    771.5×
  183. 181AlgiersAlgiers, Algeria
    771.5×
  184. 181KrakówLesser Poland, Poland
    771.5×
  185. 185NeiliTaiwan, Taiwan
    771.5×
  186. 185BuanJeollabuk-do, South Korea
    771.5×
  187. 185MiryangGyeongsangnam-do, South Korea
    771.5×
  188. 185Jeju CityJeju-do, South Korea
    771.5×
  189. 189Bang Bo DistrictSamut Prakan, Thailand
    771.5×
  190. 189HsinchuTaiwan, Taiwan
    771.5×
  191. 189Koch'angJeollabuk-do, South Korea
    771.5×
  192. 192BoryeongChungcheongnam-do, South Korea
    761.5×
  193. 192MasanGwangju, South Korea
    761.5×
  194. 194RanongRanong province, Thailand
    761.5×
  195. 195Columbialow-cost sensorsMissouri, United States
    761.5×
  196. 196ZhudongTaiwan, Taiwan
    761.5×
  197. 196ChinjuGyeongsangnam-do, South Korea
    761.5×
  198. 198DaejeonDaejeon, South Korea
    761.5×
  199. 198Goyang-siGyeonggi-do, South Korea
    761.5×
  200. 198JangseongJeollanam-do, South Korea
    761.5×

Top 200 of 1,706 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, March 23, 2024, smogrank.com/history/2024-03-23 (accessed 3 Oct 2026).

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