SmogRank / History / April 19, 2024

Most polluted cities on April 19, 2024

2,265 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 178.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during April 19, 2024. All episodes.

← N'Djamena 178.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for April 19, 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
    25311.9×
  2. 2SaltilloCoahuila, Mexico
    1917.5×
  3. 3Kathmandulow-cost sensorsBagmati Province, Nepal
    1806.4×
  4. 4Chiang MaiChiang Mai, Thailand
    1735.8×
  5. 5NanNan, Thailand
    1735.7×
  6. 6PhayaoPhayao, Thailand
    1685.4×
  7. 7LamphunLamphun, Thailand
    1685.3×
  8. 8LampangLampang, Thailand
    1685.3×
  9. 9UttaraditUttaradit, Thailand
    1624.8×
  10. 9TlaquepaqueJalisco, Mexico
    1624.8×
  11. 11Santa Anita - Los FicusLima region, Peru
    1614.7×
  12. 12PhraePhrae, Thailand
    1584.4×
  13. 13NakatsuOita, Japan
    1574.3×
  14. 14Ubon RatchathaniUbon Ratchathani, Thailand
    1564.2×
  15. 15Dhakalow-cost sensorsDhaka Division, Bangladesh
    1544.0×
  16. 16Maebaru-chūōFukuoka, Japan
    1544.0×
  17. 17HyderabadTelangana, India
    1533.9×
  18. 18Chiang RaiChiang Rai, Thailand
    1533.9×
  19. 19SinhyeonGyeongsangnam-do, South Korea
    1533.9×
  20. 20GyeongjuGyeongsangbuk-do, South Korea
    1523.8×
  21. 21BusanBusan, South Korea
    1523.8×
  22. 22Mae SaiChiang Rai, Thailand
    1523.8×
  23. 22KalasinKalasin, Thailand
    1523.8×
  24. 24SaseboNagasaki, Japan
    1513.7×
  25. 25TsushimaNagasaki, Japan
    1513.7×
  26. 26GijangBusan, South Korea
    1503.7×
  27. 27TongyeongGyeongsangnam-do, South Korea
    1493.7×
  28. 28MukdahanMukdahan, Thailand
    1493.7×
  29. 29Kamphaeng PhetKamphaeng Phet, Thailand
    1483.6×
  30. 30GotōNagasaki, Japan
    1463.6×
  31. 31KolkataWest Bengal, India
    1463.6×
  32. 32UlsanUlsan, South Korea
    1453.6×
  33. 33SukhothaiSukhothai, Thailand
    1443.5×
  34. 34GoseongGyeongsangnam-do, South Korea
    1413.5×
  35. 35IlindenIlinden, North Macedonia
    1413.4×
  36. 36KimhaeGyeongsangnam-do, South Korea
    1403.4×
  37. 37BaghdadBaghdad, Iraq
    1383.4×
  38. 37FukuokaFukuoka, Japan
    1383.4×
  39. 39MatsuuraNagasaki, Japan
    1363.3×
  40. 40NagasakiNagasaki, Japan
    1363.3×
  41. 41AshgabatAshgabat, Turkmenistan
    1363.3×
  42. 42Imarichō-kōSaga, Japan
    1343.3×
  43. 43Kanzakimachi-kanzakiSaga, Japan
    1333.2×
  44. 44KourouGuyane, French Guiana
    1313.2×
  45. 45Vientianelow-cost sensorsVientiane Prefecture, Laos
    1293.1×
  46. 45SaikaiNagasaki, Japan
    1293.1×
  47. 47DelhiDelhi, India
    1283.1×
  48. 48MiryangGyeongsangnam-do, South Korea
    1273.1×
  49. 49TogitsuNagasaki, Japan
    1273.1×
  50. 50SagaSaga, Japan
    1263.1×
  51. 51ŌmutaFukuoka, Japan
    1253.0×
  52. 52Mae SotTak, Thailand
    1243.0×
  53. 52Ureshinomachi-shimojukuSaga, Japan
    1243.0×
  54. 54ChangwonGyeongsangnam-do, South Korea
    1243.0×
  55. 54KaratsuSaga, Japan
    1243.0×
  56. 56KitakyushuFukuoka, Japan
    1243.0×
  57. 56KandaFukuoka, Japan
    1243.0×
  58. 58TakuSaga, Japan
    1233.0×
  59. 59SaikiOita, Japan
    1233.0×
  60. 60Sakon NakhonSakon Nakhon, Thailand
    1222.9×
  61. 60ItoshimaFukuoka, Japan
    1222.9×
  62. 62UngsangGyeongsangnam-do, South Korea
    1212.9×
  63. 63ChinjuGyeongsangnam-do, South Korea
    1212.9×
  64. 64WakasugiFukuoka, Japan
    1212.9×
  65. 65PohangGyeongsangbuk-do, South Korea
    1202.9×
  66. 66PhetchabunPhetchabun, Thailand
    1202.9×
  67. 67HayangGyeongsangbuk-do, South Korea
    1202.9×
  68. 67GeojeGyeongsangnam-do, South Korea
    1202.9×
  69. 69NaesŏGyeongsangnam-do, South Korea
    1202.9×
  70. 69ShikokuchūōEhime, Japan
    1202.9×
  71. 71YangsanGyeongsangnam-do, South Korea
    1192.9×
  72. 71ShenyangLiaoning, China
    1192.9×
  73. 73Amnat CharoenAmnat Charoen, Thailand
    1182.8×
  74. 73SekimachiGifu, Japan
    1182.8×
  75. 75KashimaSaga, Japan
    1182.8×
  76. 76WaegwanGyeongsangbuk-do, South Korea
    1172.8×
  77. 76NagatoYamaguchi, Japan
    1172.8×
  78. 78ObitaNagasaki, Japan
    1172.8×
  79. 79ShimonosekiYamaguchi, Japan
    1172.8×
  80. 79KogaFukuoka, Japan
    1172.8×
  81. 81SaijōEhime, Japan
    1172.8×
  82. 82HanoiHanoi, Vietnam
    1162.8×
  83. 83ShanghaiShanghai, China
    1152.8×
  84. 84YukuhashiFukuoka, Japan
    1152.7×
  85. 85UkihaFukuoka, Japan
    1152.7×
  86. 86Ciudad JuárezChihuahua, Mexico
    1142.7×
  87. 87EisenGyeongsangbuk-do, South Korea
    1132.7×
  88. 87NakamaFukuoka, Japan
    1132.7×
  89. 89YeonilGyeongsangbuk-do, South Korea
    1132.7×
  90. 89HwawŏnDaegu, South Korea
    1132.7×
  91. 91IkiNagasaki, Japan
    1132.7×
  92. 92SendaiKagoshima, Japan
    1122.7×
  93. 93YokkaichiMie, Japan
    1122.7×
  94. 93KasugaFukuoka, Japan
    1122.7×
  95. 95PhichitPhichit, Thailand
    1122.7×
  96. 96Gyeongsan-siGyeongsangbuk-do, South Korea
    1102.6×
  97. 97KaniGifu, Japan
    1102.6×
  98. 98Sing BuriSing Buri, Thailand
    1102.6×
  99. 98HikariYamaguchi, Japan
    1102.6×
  100. 100TosuSaga, Japan
    1092.6×
  101. 100NiihamaEhime, Japan
    1092.6×
  102. 102IyoEhime, Japan
    1082.6×
  103. 103CairoCairo, Egypt
    1082.6×
  104. 104YasothonYasothon, Thailand
    1082.6×
  105. 104MotosuGifu, Japan
    1082.6×
  106. 104HigashigōSaga, Japan
    1082.6×
  107. 107CoyhaiqueAysén, Chile
    1072.5×
  108. 108ŌmuraNagasaki, Japan
    1072.5×
  109. 108AmamiKagoshima, Japan
    1072.5×
  110. 110KushikinoKagoshima, Japan
    1072.5×
  111. 111IizukaFukuoka, Japan
    1072.5×
  112. 112Nakhon SawanNakhon Sawan, Thailand
    1062.5×
  113. 112SokchoGangwon-do, South Korea
    1062.5×
  114. 112Tanushimarumachi-toyokiFukuoka, Japan
    1062.5×
  115. 115DaeguDaegu, South Korea
    1062.5×
  116. 116OnodaYamaguchi, Japan
    1062.5×
  117. 116IzumiKagoshima, Japan
    1062.5×
  118. 118BuzenFukuoka, Japan
    1052.5×
  119. 119KanchanaburiKanchanaburi, Thailand
    1052.5×
  120. 119TakeoSaga, Japan
    1052.5×
  121. 121LoeiLoei, Thailand
    1042.5×
  122. 121HwadoGyeonggi-do, South Korea
    1042.5×
  123. 121HashimaGifu, Japan
    1042.5×
  124. 121MunakataFukuoka, Japan
    1042.5×
  125. 125YeojuGyeonggi-do, South Korea
    1042.5×
  126. 125KogaFukuoka, Japan
    1042.5×
  127. 127UbeYamaguchi, Japan
    1042.4×
  128. 128OgōriFukuoka, Japan
    1032.4×
  129. 129HagiYamaguchi, Japan
    1032.4×
  130. 130KudamatsuYamaguchi, Japan
    1032.4×
  131. 131MasudaShimane, Japan
    1022.4×
  132. 131HamadaShimane, Japan
    1022.4×
  133. 133IsahayaNagasaki, Japan
    1022.4×
  134. 133Donghae CityGangwon-do, South Korea
    1022.4×
  135. 135ImabariEhime, Japan
    1012.4×
  136. 136Roi EtRoi Et, Thailand
    1012.4×
  137. 137YeongjuGyeongsangbuk-do, South Korea
    1012.4×
  138. 137SuzakaNagano, Japan
    1012.4×
  139. 139Chai NatChai Nat, Thailand
    1002.4×
  140. 139FukuyamaHiroshima, Japan
    1002.4×
  141. 141GuadalajaraJalisco, Mexico
    1002.4×
  142. 142OwariasahiAichi, Japan
    1002.3×
  143. 143SalamancaGuanajuato, Mexico
    992.3×
  144. 143SeogwipoJeju-do, South Korea
    992.3×
  145. 145AndongGyeongsangbuk-do, South Korea
    992.3×
  146. 145GuanajuatoGuanajuato, Mexico
    992.3×
  147. 147Udon ThaniUdon Thani, Thailand
    992.3×
  148. 148Kaseda-shirakameKagoshima, Japan
    992.3×
  149. 148KagoshimaKagoshima, Japan
    992.3×
  150. 148HitaOita, Japan
    992.3×
  151. 151Khon KaenKhon Kaen, Thailand
    992.3×
  152. 151TokiGifu, Japan
    992.3×
  153. 151Villa Poeta José Gálvez BarrenecheaLima region, Peru
    992.3×
  154. 154CelayaGuanajuato, Mexico
    982.3×
  155. 155BeijingBeijing, China
    982.3×
  156. 155TamanoOkayama, Japan
    982.3×
  157. 155YameFukuoka, Japan
    982.3×
  158. 158Icheon-siGyeonggi-do, South Korea
    972.3×
  159. 159KurashikiOkayama, Japan
    972.3×
  160. 159IzumoShimane, Japan
    972.3×
  161. 159GōtsuchōShimane, Japan
    972.3×
  162. 162NyūzenToyama, Japan
    972.3×
  163. 162HadongGyeongsangnam-do, South Korea
    972.3×
  164. 164SadoNiigata, Japan
    972.2×
  165. 165Abujalow-cost sensorsFCT, Nigeria
    972.2×
  166. 166RatchaburiRatchaburi, Thailand
    962.2×
  167. 166ChaiyaphumChaiyaphum, Thailand
    962.2×
  168. 166PubalGyeonggi-do, South Korea
    962.2×
  169. 169ZhushanTaiwan, Taiwan
    962.2×
  170. 170TaharaAichi, Japan
    962.2×
  171. 171Nakhon RatchasimaNakhon Ratchasima, Thailand
    952.2×
  172. 171KurumeFukuoka, Japan
    952.2×
  173. 173San CarlosÑuble, Chile
    952.2×
  174. 174KameyamaMie, Japan
    952.2×
  175. 175NōgataFukuoka, Japan
    952.2×
  176. 176Nong Bua LamphuNong Bua Lamphu, Thailand
    942.2×
  177. 176Puerto AysénAysén, Chile
    942.2×
  178. 178PhetchaburiPhetchaburi, Thailand
    942.2×
  179. 178ŌgakiGifu, Japan
    942.2×
  180. 180GwangyangJeollanam-do, South Korea
    942.1×
  181. 181Suphan BuriSuphan Buri, Thailand
    942.1×
  182. 181SeonghwanChungcheongnam-do, South Korea
    942.1×
  183. 183MunsanGyeonggi-do, South Korea
    942.1×
  184. 183Goyang-siGyeonggi-do, South Korea
    942.1×
  185. 183KaminokawaTochigi, Japan
    942.1×
  186. 183RabinalBaja Verapaz, Guatemala
    942.1×
  187. 187Ōdachō-ōdaShimane, Japan
    932.1×
  188. 187NagoOkinawa, Japan
    932.1×
  189. 189MagongTaiwan, Taiwan
    932.1×
  190. 190ToyohashiAichi, Japan
    932.1×
  191. 191OsanGyeonggi-do, South Korea
    932.1×
  192. 191Guri-siGyeonggi-do, South Korea
    932.1×
  193. 191ToyamaToyama, Japan
    932.1×
  194. 191YawatahamaEhime, Japan
    932.1×
  195. 191MineYamaguchi, Japan
    932.1×
  196. 196YecheonGyeongsangbuk-do, South Korea
    922.1×
  197. 196Hwaseong-siGyeonggi-do, South Korea
    922.1×
  198. 198Ansan-siGyeonggi-do, South Korea
    922.1×
  199. 199ErlinTaiwan, Taiwan
    922.1×
  200. 199Ganghwa-gunIncheon, South Korea
    922.1×

Top 200 of 2,265 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 19, 2024, smogrank.com/history/2024-04-19 (accessed 3 Oct 2026).

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