SmogRank / History / April 27, 2024

Most polluted cities on April 27, 2024

2,313 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 169.0 µg/m³. Each city's own local calendar day.

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

← N'Djamena 169.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for April 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
    24411.3×
  2. 2Kathmandulow-cost sensorsBagmati Province, Nepal
    1957.9×
  3. 3HualpénBiobio, Chile
    1705.5×
  4. 4Ubon RatchathaniUbon Ratchathani, Thailand
    1675.2×
  5. 5Santa Anita - Los FicusLima region, Peru
    1655.1×
  6. 6BeijingBeijing, China
    1645.0×
  7. 7Chiang MaiChiang Mai, Thailand
    1624.8×
  8. 8OsornoLos Lagos Region, Chile
    1614.6×
  9. 9TalcahuanoBiobio, Chile
    1614.6×
  10. 10NanNan, Thailand
    1604.6×
  11. 11HanoiHanoi, Vietnam
    1604.5×
  12. 12Vientianelow-cost sensorsVientiane Prefecture, Laos
    1574.3×
  13. 13BaghdadBaghdad, Iraq
    1564.2×
  14. 13Dhakalow-cost sensorsDhaka Division, Bangladesh
    1564.2×
  15. 15NacimientoBiobio, Chile
    1554.1×
  16. 16LampangLampang, Thailand
    1554.1×
  17. 17Los ÁngelesBiobio, Chile
    1513.7×
  18. 18HyderabadTelangana, India
    1513.7×
  19. 19PhayaoPhayao, Thailand
    1493.7×
  20. 20Puerto VarasLos Lagos Region, Chile
    1473.6×
  21. 21UttaraditUttaradit, Thailand
    1463.6×
  22. 22MukdahanMukdahan, Thailand
    1453.6×
  23. 23DelhiDelhi, India
    1393.4×
  24. 24PhraePhrae, Thailand
    1383.4×
  25. 25Mae SaiChiang Rai, Thailand
    1373.3×
  26. 25Ciudad JuárezChihuahua, Mexico
    1373.3×
  27. 27LamphunLamphun, Thailand
    1363.3×
  28. 28KalasinKalasin, Thailand
    1333.2×
  29. 29San CarlosÑuble, Chile
    1313.2×
  30. 30Lahorelow-cost sensorsPunjab, Pakistan
    1283.1×
  31. 31HualquiBiobio, Chile
    1243.0×
  32. 32La UniónLos Ríos Region, Chile
    1243.0×
  33. 32ChillánÑuble, Chile
    1243.0×
  34. 34Mae SotTak, Thailand
    1212.9×
  35. 35Chiang RaiChiang Rai, Thailand
    1192.8×
  36. 35LoeiLoei, Thailand
    1192.8×
  37. 37AstanaAstana, Kazakhstan
    1182.8×
  38. 38Kamphaeng PhetKamphaeng Phet, Thailand
    1182.8×
  39. 39SeonghwanChungcheongnam-do, South Korea
    1172.8×
  40. 40PyeongtaekGyeonggi-do, South Korea
    1162.8×
  41. 41RengoO'Higgins Region, Chile
    1152.8×
  42. 42YangonYangon, Myanmar
    1152.7×
  43. 43KolkataWest Bengal, India
    1142.7×
  44. 44YasothonYasothon, Thailand
    1142.7×
  45. 45SukhothaiSukhothai, Thailand
    1132.7×
  46. 46Puerto MonttLos Lagos Region, Chile
    1122.7×
  47. 47PhetchabunPhetchabun, Thailand
    1112.6×
  48. 48JakartaJakarta, Indonesia
    1072.5×
  49. 49ConcepciónBiobio, Chile
    1072.5×
  50. 50Udon ThaniUdon Thani, Thailand
    1062.5×
  51. 50ShikokuchūōEhime, Japan
    1062.5×
  52. 52Sakon NakhonSakon Nakhon, Thailand
    1052.5×
  53. 53MissionTexas, United States
    1042.5×
  54. 54ShenyangLiaoning, China
    1032.4×
  55. 55Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1032.4×
  56. 56Guatemala CityGuatemala, Guatemala
    1022.4×
  57. 57Nong Bua LamphuNong Bua Lamphu, Thailand
    1022.4×
  58. 58RabinalBaja Verapaz, Guatemala
    992.3×
  59. 59PubalGyeonggi-do, South Korea
    992.3×
  60. 60LimaLima Province, Peru
    982.3×
  61. 61Puerto AysénAysén, Chile
    982.3×
  62. 62PhichitPhichit, Thailand
    972.3×
  63. 62ToméBiobio, Chile
    972.3×
  64. 64AnseongGyeonggi-do, South Korea
    962.2×
  65. 65EdinburgTexas, United States
    952.2×
  66. 66OsanGyeonggi-do, South Korea
    942.1×
  67. 67UlsanUlsan, South Korea
    942.1×
  68. 68Villa Poeta José Gálvez BarrenecheaLima region, Peru
    942.1×
  69. 69Eagle PassTexas, United States
    932.1×
  70. 70CheonanChungcheongnam-do, South Korea
    922.1×
  71. 71Addis AbabaAddis Ababa, Ethiopia
    922.1×
  72. 71YeojuGyeonggi-do, South Korea
    922.1×
  73. 73PohangGyeongsangbuk-do, South Korea
    922.1×
  74. 73ValdiviaLos Ríos Region, Chile
    922.1×
  75. 75KanchanaburiKanchanaburi, Thailand
    912.0×
  76. 76AlessandriaPiedmont, Italy
    912.0×
  77. 77CairoCairo, Egypt
    902.0×
  78. 77GwangmyeongGyeonggi-do, South Korea
    902.0×
  79. 79Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    902.0×
  80. 80HayangGyeongsangbuk-do, South Korea
    902.0×
  81. 80CoyhaiqueAysén, Chile
    902.0×
  82. 82San Pedro de la PazBiobio, Chile
    902.0×
  83. 83SuwonGyeonggi-do, South Korea
    892.0×
  84. 84JungpyongNorth Chungcheong, South Korea
    892.0×
  85. 84VillarricaAraucania, Chile
    892.0×
  86. 86Jacobo HunterArequipa, Peru
    892.0×
  87. 87Live OakTexas, United States
    881.9×
  88. 88MumbaiMaharashtra, India
    881.9×
  89. 89KimhaeGyeongsangnam-do, South Korea
    881.9×
  90. 90AntananarivoAnalamanga, Madagascar
    871.9×
  91. 90WaegwanGyeongsangbuk-do, South Korea
    871.9×
  92. 92Cheongju-siNorth Chungcheong, South Korea
    871.9×
  93. 93Khon KaenKhon Kaen, Thailand
    871.9×
  94. 93HwawŏnDaegu, South Korea
    871.9×
  95. 95YeonilGyeongsangbuk-do, South Korea
    871.9×
  96. 95EisenGyeongsangbuk-do, South Korea
    871.9×
  97. 97Bucheon-siGyeonggi-do, South Korea
    861.9×
  98. 98TangjinChungcheongnam-do, South Korea
    861.9×
  99. 98SangjuGyeongsangbuk-do, South Korea
    861.9×
  100. 98BusanBusan, South Korea
    861.9×
  101. 101Puente AltoSantiago Metropolitan, Chile
    861.9×
  102. 102Roi EtRoi Et, Thailand
    851.8×
  103. 103Nakhon SawanNakhon Sawan, Thailand
    851.8×
  104. 104GijangBusan, South Korea
    851.8×
  105. 105Anyang-siGyeonggi-do, South Korea
    851.8×
  106. 106RatchaburiRatchaburi, Thailand
    841.8×
  107. 106DaeguDaegu, South Korea
    841.8×
  108. 106Donghae CityGangwon-do, South Korea
    841.8×
  109. 109Gyeongsan-siGyeongsangbuk-do, South Korea
    841.8×
  110. 109CuranilahueBiobio, Chile
    841.8×
  111. 109CoronelBiobio, Chile
    841.8×
  112. 112SaijōEhime, Japan
    841.8×
  113. 113KoesanNorth Chungcheong, South Korea
    841.8×
  114. 113Icheon-siGyeonggi-do, South Korea
    841.8×
  115. 113NiihamaEhime, Japan
    841.8×
  116. 116Chai NatChai Nat, Thailand
    831.8×
  117. 116ŻywiecSilesia, Poland
    831.8×
  118. 118WŏnjuGangwon-do, South Korea
    831.8×
  119. 119YeongjuGyeongsangbuk-do, South Korea
    831.8×
  120. 119Chinch'ŏnNorth Chungcheong, South Korea
    831.8×
  121. 121Si Sa KetSi Sa Ket, Thailand
    831.7×
  122. 122ChaiyaphumChaiyaphum, Thailand
    831.7×
  123. 123SadoNiigata, Japan
    821.7×
  124. 124Sing BuriSing Buri, Thailand
    821.7×
  125. 124San ClementeIca, Peru
    821.7×
  126. 126Karachilow-cost sensorsSindh, Pakistan
    811.7×
  127. 126SokchoGangwon-do, South Korea
    811.7×
  128. 126ChiguayanteBiobio, Chile
    811.7×
  129. 129IksanJeollabuk-do, South Korea
    811.7×
  130. 129Kan’onjichōKagawa, Japan
    811.7×
  131. 129KujiIwate, Japan
    811.7×
  132. 129TemucoAraucania, Chile
    811.7×
  133. 133Ansan-siGyeonggi-do, South Korea
    811.7×
  134. 134AsanChungcheongnam-do, South Korea
    801.7×
  135. 135Gimpo-siGyeonggi-do, South Korea
    801.7×
  136. 136Lop BuriLopburi, Thailand
    801.6×
  137. 137RēzekneRēzekne, Latvia
    801.6×
  138. 138AndongGyeongsangbuk-do, South Korea
    801.6×
  139. 139JeddahMecca Region, Saudi Arabia
    791.6×
  140. 139MungyeongGyeongsangbuk-do, South Korea
    791.6×
  141. 139NaesŏGyeongsangnam-do, South Korea
    791.6×
  142. 139HachinoheAomori, Japan
    791.6×
  143. 139AomoriAomori, Japan
    791.6×
  144. 139CauquenesMaule Region, Chile
    791.6×
  145. 145ChangwonGyeongsangnam-do, South Korea
    791.6×
  146. 145HirosakiAomori, Japan
    791.6×
  147. 147ChinjuGyeongsangnam-do, South Korea
    791.6×
  148. 147CopiapóAtacama, Chile
    791.6×
  149. 149ŁukówLublin, Poland
    791.6×
  150. 149DushanbeDushanbe, Tajikistan
    791.6×
  151. 149YangsanGyeongsangnam-do, South Korea
    791.6×
  152. 149Hongch’ŏnGangwon-do, South Korea
    791.6×
  153. 153Bang NaBangkok, Thailand
    781.6×
  154. 154YesanChungcheongnam-do, South Korea
    781.6×
  155. 155GumiGyeongsangbuk-do, South Korea
    781.6×
  156. 156PhuketPhuket, Thailand
    781.6×
  157. 156Hua HinPrachuap Khiri Khan, Thailand
    781.6×
  158. 158MiyakoIwate, Japan
    771.6×
  159. 158ChangnyeongGyeongsangnam-do, South Korea
    771.6×
  160. 160GoseongGyeongsangnam-do, South Korea
    771.5×
  161. 160CelayaGuanajuato, Mexico
    771.5×
  162. 162Nakhon RatchasimaNakhon Ratchasima, Thailand
    771.5×
  163. 162GuangzhouGuangdong, China
    771.5×
  164. 162ChungjuNorth Chungcheong, South Korea
    771.5×
  165. 162Corpus ChristiTexas, United States
    771.5×
  166. 166MiryangGyeongsangnam-do, South Korea
    771.5×
  167. 167PhetchaburiPhetchaburi, Thailand
    771.5×
  168. 167GunsanJeollabuk-do, South Korea
    771.5×
  169. 167IncheonIncheon, South Korea
    771.5×
  170. 167AustinTexas, United States
    771.5×
  171. 171SantyokuGangwon-do, South Korea
    771.5×
  172. 171SarajevoFederation of B&H, Bosnia and Herzegovina
    771.5×
  173. 171San AntonioTexas, United States
    771.5×
  174. 174RanongRanong province, Thailand
    761.5×
  175. 175UngsangGyeongsangnam-do, South Korea
    761.5×
  176. 175Abujalow-cost sensorsFCT, Nigeria
    761.5×
  177. 175Khlong Sam WaBangkok, Thailand
    761.5×
  178. 178YecheonGyeongsangbuk-do, South Korea
    761.5×
  179. 178YokoteAkita, Japan
    761.5×
  180. 180HongseongChungcheongnam-do, South Korea
    761.5×
  181. 180HanamGyeonggi-do, South Korea
    761.5×
  182. 180ŌdateAkita, Japan
    761.5×
  183. 183San Luis de la PazGuanajuato, Mexico
    751.5×
  184. 184Si Maha PhotPrachin Buri, Thailand
    751.5×
  185. 184CoquimboCoquimbo Region, Chile
    751.5×
  186. 186GimcheonGyeongsangbuk-do, South Korea
    751.5×
  187. 186KureHiroshima, Japan
    751.5×
  188. 186HwadoGyeonggi-do, South Korea
    751.5×
  189. 186QuillotaValparaiso, Chile
    751.5×
  190. 190QuinteroValparaiso, Chile
    751.5×
  191. 191HigashihiroshimaHiroshima, Japan
    751.5×
  192. 192ShanghaiShanghai, China
    741.4×
  193. 192ZentsujichóKagawa, Japan
    741.4×
  194. 194DallasTexas, United States
    741.4×
  195. 195HadongGyeongsangnam-do, South Korea
    741.4×
  196. 196YangguGangwon-do, South Korea
    741.4×
  197. 196GwangyangJeollanam-do, South Korea
    741.4×
  198. 198SaraburiSaraburi, Thailand
    731.4×
  199. 198Yangp'yŏngGyeonggi-do, South Korea
    731.4×
  200. 198TakeharaHiroshima, Japan
    731.4×

Top 200 of 2,313 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, April 27, 2024, smogrank.com/history/2024-04-27 (accessed 3 Oct 2026).

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