SmogRank / History / April 17, 2024

Most polluted cities on April 17, 2024

2,308 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 121.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during April 17, 2024. All episodes.

← N'Djamena 121.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for April 17, 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
    1978.1×
  2. 2Kathmandulow-cost sensorsBagmati Province, Nepal
    1725.7×
  3. 3Santa Anita - Los FicusLima region, Peru
    1675.2×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    1645.0×
  5. 5GyeongjuGyeongsangbuk-do, South Korea
    1614.6×
  6. 6Ubon RatchathaniUbon Ratchathani, Thailand
    1614.6×
  7. 7Donghae CityGangwon-do, South Korea
    1614.6×
  8. 8SokchoGangwon-do, South Korea
    1604.6×
  9. 9KalasinKalasin, Thailand
    1584.4×
  10. 10SantyokuGangwon-do, South Korea
    1584.3×
  11. 11KolkataWest Bengal, India
    1574.3×
  12. 12YasothonYasothon, Thailand
    1574.3×
  13. 13BeijingBeijing, China
    1564.2×
  14. 14GangneungGangwon-do, South Korea
    1554.1×
  15. 15MukdahanMukdahan, Thailand
    1554.0×
  16. 16YeongjuGyeongsangbuk-do, South Korea
    1513.7×
  17. 17Icheon-siGyeonggi-do, South Korea
    1483.6×
  18. 18PohangGyeongsangbuk-do, South Korea
    1453.6×
  19. 19Amnat CharoenAmnat Charoen, Thailand
    1443.5×
  20. 19PubalGyeonggi-do, South Korea
    1443.5×
  21. 21UngsangGyeongsangnam-do, South Korea
    1433.5×
  22. 22Vientianelow-cost sensorsVientiane Prefecture, Laos
    1423.5×
  23. 22YecheonGyeongsangbuk-do, South Korea
    1423.5×
  24. 24AndongGyeongsangbuk-do, South Korea
    1423.5×
  25. 25HayangGyeongsangbuk-do, South Korea
    1413.5×
  26. 26YeonilGyeongsangbuk-do, South Korea
    1393.4×
  27. 27GumiGyeongsangbuk-do, South Korea
    1393.4×
  28. 28YeojuGyeonggi-do, South Korea
    1383.4×
  29. 29EisenGyeongsangbuk-do, South Korea
    1363.3×
  30. 30Chinch'ŏnNorth Chungcheong, South Korea
    1353.3×
  31. 31GijangBusan, South Korea
    1353.3×
  32. 32HwadoGyeonggi-do, South Korea
    1343.3×
  33. 33Cheongsong gunGyeongsangbuk-do, South Korea
    1343.3×
  34. 34NanNan, Thailand
    1343.3×
  35. 35UlsanUlsan, South Korea
    1333.2×
  36. 36MungyeongGyeongsangbuk-do, South Korea
    1333.2×
  37. 36MiryangGyeongsangnam-do, South Korea
    1333.2×
  38. 38YangsanGyeongsangnam-do, South Korea
    1333.2×
  39. 39HyderabadTelangana, India
    1323.2×
  40. 40Chiang MaiChiang Mai, Thailand
    1313.2×
  41. 40YesanChungcheongnam-do, South Korea
    1313.2×
  42. 42Gyeongsan-siGyeongsangbuk-do, South Korea
    1313.2×
  43. 43CairoCairo, Egypt
    1303.2×
  44. 43Cheongju-siNorth Chungcheong, South Korea
    1303.2×
  45. 45DamyangJeollanam-do, South Korea
    1303.1×
  46. 45T’aebaekGangwon-do, South Korea
    1303.1×
  47. 47Hongch’ŏnGangwon-do, South Korea
    1293.1×
  48. 48BusanBusan, South Korea
    1283.1×
  49. 49KinzanChungcheongnam-do, South Korea
    1283.1×
  50. 50WaegwanGyeongsangbuk-do, South Korea
    1273.1×
  51. 51YŏnmuChungcheongnam-do, South Korea
    1263.0×
  52. 52SangjuGyeongsangbuk-do, South Korea
    1253.0×
  53. 53WŏnjuGangwon-do, South Korea
    1243.0×
  54. 54SeonghwanChungcheongnam-do, South Korea
    1243.0×
  55. 55KimhaeGyeongsangnam-do, South Korea
    1233.0×
  56. 56CheonanChungcheongnam-do, South Korea
    1233.0×
  57. 57JungpyongNorth Chungcheong, South Korea
    1233.0×
  58. 58YangonYangon, Myanmar
    1233.0×
  59. 59TangjinChungcheongnam-do, South Korea
    1222.9×
  60. 60KoesanNorth Chungcheong, South Korea
    1222.9×
  61. 61UttaraditUttaradit, Thailand
    1222.9×
  62. 62DaeguDaegu, South Korea
    1212.9×
  63. 62SeoulSeoul, South Korea
    1212.9×
  64. 64PyeongtaekGyeonggi-do, South Korea
    1212.9×
  65. 65JumunjinGangwon-do, South Korea
    1202.9×
  66. 66ChungjuNorth Chungcheong, South Korea
    1202.9×
  67. 67Abujalow-cost sensorsFCT, Nigeria
    1192.9×
  68. 68Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1192.8×
  69. 68YeongdongNorth Chungcheong, South Korea
    1192.8×
  70. 68OsornoLos Lagos Region, Chile
    1192.8×
  71. 71PhayaoPhayao, Thailand
    1182.8×
  72. 72ChangsuJeollabuk-do, South Korea
    1172.8×
  73. 73Mae SaiChiang Rai, Thailand
    1172.8×
  74. 73OkcheonNorth Chungcheong, South Korea
    1172.8×
  75. 75KunwiGyeongsangbuk-do, South Korea
    1172.8×
  76. 76BaghdadBaghdad, Iraq
    1162.8×
  77. 77OsanGyeonggi-do, South Korea
    1162.8×
  78. 77KosongGangwon-do, South Korea
    1162.8×
  79. 79YokkaichiMie, Japan
    1162.8×
  80. 80LampangLampang, Thailand
    1152.8×
  81. 80IksanJeollabuk-do, South Korea
    1152.8×
  82. 80HwawŏnDaegu, South Korea
    1152.8×
  83. 83NonsanChungcheongnam-do, South Korea
    1152.7×
  84. 83Anyang-siGyeonggi-do, South Korea
    1152.7×
  85. 85Karachilow-cost sensorsSindh, Pakistan
    1152.7×
  86. 85Udon ThaniUdon Thani, Thailand
    1152.7×
  87. 85GimcheonGyeongsangbuk-do, South Korea
    1152.7×
  88. 88Roi EtRoi Et, Thailand
    1142.7×
  89. 89NamsaJeollabuk-do, South Korea
    1142.7×
  90. 90HanoiHanoi, Vietnam
    1132.7×
  91. 91Guri-siGyeonggi-do, South Korea
    1132.7×
  92. 91ChangwonGyeongsangnam-do, South Korea
    1132.7×
  93. 93PhraePhrae, Thailand
    1132.7×
  94. 94HaenamJeollanam-do, South Korea
    1122.7×
  95. 95Puerto VarasLos Lagos Region, Chile
    1112.6×
  96. 96GunsanJeollabuk-do, South Korea
    1112.6×
  97. 97Bucheon-siGyeonggi-do, South Korea
    1102.6×
  98. 98Goyang-siGyeonggi-do, South Korea
    1102.6×
  99. 98Koch'angJeollabuk-do, South Korea
    1102.6×
  100. 98KimjeJeollabuk-do, South Korea
    1102.6×
  101. 101NeietsuGangwon-do, South Korea
    1102.6×
  102. 101Ciudad JuárezChihuahua, Mexico
    1102.6×
  103. 103NaesŏGyeongsangnam-do, South Korea
    1102.6×
  104. 104GongjuChungcheongnam-do, South Korea
    1092.6×
  105. 105GaigeturiJeju-do, South Korea
    1082.6×
  106. 106MasanGwangju, South Korea
    1082.6×
  107. 106JeonjuJeollabuk-do, South Korea
    1082.6×
  108. 108LamphunLamphun, Thailand
    1082.5×
  109. 109KameyamaMie, Japan
    1072.5×
  110. 109GwangmyeongGyeonggi-do, South Korea
    1072.5×
  111. 111Chiang RaiChiang Rai, Thailand
    1072.5×
  112. 111WanjuJeollabuk-do, South Korea
    1072.5×
  113. 113Jeju CityJeju-do, South Korea
    1072.5×
  114. 114Yangp'yŏngGyeonggi-do, South Korea
    1062.5×
  115. 115YangjuGyeonggi-do, South Korea
    1062.5×
  116. 115GapyeongGyeonggi-do, South Korea
    1062.5×
  117. 117JangheungJeollanam-do, South Korea
    1062.5×
  118. 118Jinan-gunJeollabuk-do, South Korea
    1052.5×
  119. 118KōtariKyoto, Japan
    1052.5×
  120. 120GwangjuGwangju, South Korea
    1052.5×
  121. 120KyotoKyoto, Japan
    1052.5×
  122. 120SinhyeonGyeongsangnam-do, South Korea
    1052.5×
  123. 123CelayaGuanajuato, Mexico
    1042.5×
  124. 124AnseongGyeonggi-do, South Korea
    1042.4×
  125. 125JangseongJeollanam-do, South Korea
    1042.4×
  126. 126DelhiDelhi, India
    1032.4×
  127. 127HongseongChungcheongnam-do, South Korea
    1032.4×
  128. 128SukhothaiSukhothai, Thailand
    1032.4×
  129. 129La UniónLos Ríos Region, Chile
    1022.4×
  130. 129TsushimaNagasaki, Japan
    1022.4×
  131. 131JakartaJakarta, Indonesia
    1022.4×
  132. 132ImsilJeollabuk-do, South Korea
    1022.4×
  133. 133Khon KaenKhon Kaen, Thailand
    1012.4×
  134. 134Nakhon RatchasimaNakhon Ratchasima, Thailand
    1012.4×
  135. 134DaejeonDaejeon, South Korea
    1012.4×
  136. 134YawataKyoto, Japan
    1012.4×
  137. 137Mae SotTak, Thailand
    1002.4×
  138. 138BuanJeollabuk-do, South Korea
    1002.4×
  139. 139SandachōHyōgo, Japan
    992.3×
  140. 139YeongamJeollanam-do, South Korea
    992.3×
  141. 141Nong Bua LamphuNong Bua Lamphu, Thailand
    992.3×
  142. 141TongyeongGyeongsangnam-do, South Korea
    992.3×
  143. 143SejongSejong-si, South Korea
    982.3×
  144. 144Si Sa KetSi Sa Ket, Thailand
    982.3×
  145. 145Kamphaeng PhetKamphaeng Phet, Thailand
    982.3×
  146. 145CheorwonGangwon-do, South Korea
    982.3×
  147. 147ValdiviaLos Ríos Region, Chile
    972.3×
  148. 148SuzukaMie, Japan
    972.2×
  149. 149LoeiLoei, Thailand
    972.2×
  150. 149Hwaseong-siGyeonggi-do, South Korea
    972.2×
  151. 151ChaiyaphumChaiyaphum, Thailand
    962.2×
  152. 151Puerto MonttLos Lagos Region, Chile
    962.2×
  153. 153HanamGyeonggi-do, South Korea
    962.2×
  154. 154BuyeoChungcheongnam-do, South Korea
    962.2×
  155. 154UjiKyoto, Japan
    962.2×
  156. 154SinanJeollanam-do, South Korea
    962.2×
  157. 157SugaiKyoto, Japan
    962.2×
  158. 158PhetchabunPhetchabun, Thailand
    962.2×
  159. 158VillarricaAraucania, Chile
    962.2×
  160. 160NangenJeollabuk-do, South Korea
    952.2×
  161. 160KusatsuShiga, Japan
    952.2×
  162. 162Uijeongbu-siGyeonggi-do, South Korea
    952.2×
  163. 163GoseongGyeongsangnam-do, South Korea
    942.2×
  164. 163Seongnam-siGyeonggi-do, South Korea
    942.2×
  165. 163Guatemala CityGuatemala, Guatemala
    942.2×
  166. 166Lop BuriLopburi, Thailand
    942.2×
  167. 167Nakhon SawanNakhon Sawan, Thailand
    942.1×
  168. 167NantanKyoto, Japan
    942.1×
  169. 169MokpoJeollanam-do, South Korea
    942.1×
  170. 169KameokaKyoto, Japan
    942.1×
  171. 169RabinalBaja Verapaz, Guatemala
    942.1×
  172. 169JōyōKyoto, Japan
    942.1×
  173. 173ChinjuGyeongsangnam-do, South Korea
    932.1×
  174. 174San CarlosÑuble, Chile
    932.1×
  175. 175Sing BuriSing Buri, Thailand
    932.1×
  176. 175SuwonGyeonggi-do, South Korea
    932.1×
  177. 177PhichitPhichit, Thailand
    932.1×
  178. 178GwangyangJeollanam-do, South Korea
    932.1×
  179. 179SurinSurin, Thailand
    922.1×
  180. 180RatchaburiRatchaburi, Thailand
    922.1×
  181. 181GwangjuGyeonggi-do, South Korea
    922.1×
  182. 181HadongGyeongsangnam-do, South Korea
    922.1×
  183. 183Chai NatChai Nat, Thailand
    922.1×
  184. 183KuryeJeollanam-do, South Korea
    922.1×
  185. 185GeojeGyeongsangnam-do, South Korea
    912.1×
  186. 186JeddahMecca Region, Saudi Arabia
    912.0×
  187. 186SantiagoSantiago Metropolitan, Chile
    912.0×
  188. 188ToyonakaOsaka, Japan
    902.0×
  189. 189MumbaiMaharashtra, India
    902.0×
  190. 189Ansan-siGyeonggi-do, South Korea
    902.0×
  191. 191TaharaAichi, Japan
    902.0×
  192. 191NacimientoBiobio, Chile
    902.0×
  193. 193AsanChungcheongnam-do, South Korea
    902.0×
  194. 193JeongeupJeollabuk-do, South Korea
    902.0×
  195. 195Si Maha PhotPrachin Buri, Thailand
    902.0×
  196. 196Villa Poeta José Gálvez BarrenecheaLima region, Peru
    892.0×
  197. 196KizugawaKyoto, Japan
    892.0×
  198. 198NajuJeollanam-do, South Korea
    892.0×
  199. 198HualpénBiobio, Chile
    892.0×
  200. 200Gimpo-siGyeonggi-do, South Korea
    892.0×

Top 200 of 2,308 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 17, 2024, smogrank.com/history/2024-04-17 (accessed 3 Oct 2026).

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