SmogRank / History / April 8, 2024

Most polluted cities on April 8, 2024

2,203 cities ranked by their average PM2.5 over the day; the worst was Piedras Negras, Mexico, at 986.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during April 8, 2024. All episodes.

← Piedras Negras 986.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for April 8, 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. 1Piedras NegrasCoahuila, Mexico
    500+65.7×
  2. 2Mae SaiChiang Rai, Thailand
    2169.4×
  3. 3Chiang MaiChiang Mai, Thailand
    2068.7×
  4. 4Kathmandulow-cost sensorsBagmati Province, Nepal
    1927.6×
  5. 5N'DjamenaN’Djaména, Chad
    1917.5×
  6. 6LamphunLamphun, Thailand
    1806.5×
  7. 7LampangLampang, Thailand
    1786.3×
  8. 7Chiang RaiChiang Rai, Thailand
    1786.3×
  9. 9Dhakalow-cost sensorsDhaka Division, Bangladesh
    1756.0×
  10. 10Vientianelow-cost sensorsVientiane Prefecture, Laos
    1735.8×
  11. 11PhayaoPhayao, Thailand
    1735.8×
  12. 12NanNan, Thailand
    1735.7×
  13. 13Ubon RatchathaniUbon Ratchathani, Thailand
    1695.5×
  14. 14ShenyangLiaoning, China
    1685.3×
  15. 15LoeiLoei, Thailand
    1645.0×
  16. 16UttaraditUttaradit, Thailand
    1624.7×
  17. 17PhraePhrae, Thailand
    1604.6×
  18. 18Kamphaeng PhetKamphaeng Phet, Thailand
    1604.5×
  19. 19SukhothaiSukhothai, Thailand
    1604.5×
  20. 20KalasinKalasin, Thailand
    1594.5×
  21. 21MukdahanMukdahan, Thailand
    1594.5×
  22. 22Amnat CharoenAmnat Charoen, Thailand
    1584.4×
  23. 23YasothonYasothon, Thailand
    1544.0×
  24. 24PhichitPhichit, Thailand
    1544.0×
  25. 25Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1523.8×
  26. 26HyderabadTelangana, India
    1453.6×
  27. 27Udon ThaniUdon Thani, Thailand
    1423.5×
  28. 28Sakon NakhonSakon Nakhon, Thailand
    1373.3×
  29. 29KolkataWest Bengal, India
    1333.2×
  30. 29Lexingtonlow-cost sensorsMassachusetts, United States
    1333.2×
  31. 31Roi EtRoi Et, Thailand
    1333.2×
  32. 32KanchanaburiKanchanaburi, Thailand
    1323.2×
  33. 33Chai NatChai Nat, Thailand
    1283.1×
  34. 34PhetchabunPhetchabun, Thailand
    1283.1×
  35. 35DziałdowoWarmia-Masuria, Poland
    1273.1×
  36. 36YeojuGyeonggi-do, South Korea
    1263.0×
  37. 37Nong Bua LamphuNong Bua Lamphu, Thailand
    1263.0×
  38. 37JungpyongNorth Chungcheong, South Korea
    1263.0×
  39. 39Lop BuriLopburi, Thailand
    1253.0×
  40. 39PubalGyeonggi-do, South Korea
    1253.0×
  41. 41Nakhon SawanNakhon Sawan, Thailand
    1212.9×
  42. 42Addis AbabaAddis Ababa, Ethiopia
    1152.7×
  43. 43KoesanNorth Chungcheong, South Korea
    1142.7×
  44. 44Si Sa KetSi Sa Ket, Thailand
    1142.7×
  45. 45Khon KaenKhon Kaen, Thailand
    1132.7×
  46. 45BeijingBeijing, China
    1132.7×
  47. 47Mae SotTak, Thailand
    1122.7×
  48. 48Chinch'ŏnNorth Chungcheong, South Korea
    1112.6×
  49. 49BaghdadBaghdad, Iraq
    1102.6×
  50. 49Icheon-siGyeonggi-do, South Korea
    1102.6×
  51. 51UlsanUlsan, South Korea
    1092.6×
  52. 52LorcaMurcia, Spain
    1092.6×
  53. 53Guatemala CityGuatemala, Guatemala
    1082.6×
  54. 54Cheongju-siNorth Chungcheong, South Korea
    1082.6×
  55. 55Karachilow-cost sensorsSindh, Pakistan
    1082.5×
  56. 56PohangGyeongsangbuk-do, South Korea
    1072.5×
  57. 57Islamabadlow-cost sensorsIslamabad, Pakistan
    1072.5×
  58. 58Sing BuriSing Buri, Thailand
    1062.5×
  59. 59Suphan BuriSuphan Buri, Thailand
    1052.5×
  60. 60WŏnjuGangwon-do, South Korea
    1052.5×
  61. 61KigaliKigali, Rwanda
    1042.5×
  62. 61KinzanChungcheongnam-do, South Korea
    1042.5×
  63. 61ChungjuNorth Chungcheong, South Korea
    1042.5×
  64. 64Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1022.4×
  65. 64OkcheonNorth Chungcheong, South Korea
    1022.4×
  66. 66Yangp'yŏngGyeonggi-do, South Korea
    1022.4×
  67. 66GeojeGyeongsangnam-do, South Korea
    1022.4×
  68. 68YeongdongNorth Chungcheong, South Korea
    1012.4×
  69. 69SangjuGyeongsangbuk-do, South Korea
    1012.4×
  70. 70Ponca CityOklahoma, United States
    1002.4×
  71. 71MungyeongGyeongsangbuk-do, South Korea
    1002.3×
  72. 72Victoria de DurangoDurango, Mexico
    992.3×
  73. 73SeonghwanChungcheongnam-do, South Korea
    992.3×
  74. 74ChaiyaphumChaiyaphum, Thailand
    992.3×
  75. 75Nakhon RatchasimaNakhon Ratchasima, Thailand
    992.3×
  76. 76SokchoGangwon-do, South Korea
    982.3×
  77. 77AnseongGyeonggi-do, South Korea
    982.3×
  78. 78HayangGyeongsangbuk-do, South Korea
    982.3×
  79. 79YeonilGyeongsangbuk-do, South Korea
    972.3×
  80. 80YangonYangon, Myanmar
    972.3×
  81. 81SurinSurin, Thailand
    972.2×
  82. 82UngsangGyeongsangnam-do, South Korea
    962.2×
  83. 83GimcheonGyeongsangbuk-do, South Korea
    962.2×
  84. 84Hongch’ŏnGangwon-do, South Korea
    962.2×
  85. 85Kuala LumpurKuala Lumpur, Malaysia
    952.2×
  86. 86IncheonIncheon, South Korea
    952.2×
  87. 87YŏnmuChungcheongnam-do, South Korea
    952.2×
  88. 87HwadoGyeonggi-do, South Korea
    952.2×
  89. 89PyeongtaekGyeonggi-do, South Korea
    942.2×
  90. 90GyeongjuGyeongsangbuk-do, South Korea
    942.1×
  91. 90GwangjuGyeonggi-do, South Korea
    942.1×
  92. 90SalamancaGuanajuato, Mexico
    942.1×
  93. 93les EscaldesEscaldes-Engordany, Andorra
    932.1×
  94. 94GangneungGangwon-do, South Korea
    932.1×
  95. 94LawrencevilleGeorgia, United States
    932.1×
  96. 96EisenGyeongsangbuk-do, South Korea
    932.1×
  97. 96DaejeonDaejeon, South Korea
    932.1×
  98. 98GumiGyeongsangbuk-do, South Korea
    922.1×
  99. 99ShikokuchūōEhime, Japan
    922.1×
  100. 100CelayaGuanajuato, Mexico
    912.1×
  101. 101YesanChungcheongnam-do, South Korea
    912.0×
  102. 102YeongjuGyeongsangbuk-do, South Korea
    912.0×
  103. 102Donghae CityGangwon-do, South Korea
    912.0×
  104. 104GainesvilleGeorgia, United States
    912.0×
  105. 105YeosuJeollanam-do, South Korea
    902.0×
  106. 106KimhaeGyeongsangnam-do, South Korea
    902.0×
  107. 107NonsanChungcheongnam-do, South Korea
    902.0×
  108. 107MiryangGyeongsangnam-do, South Korea
    902.0×
  109. 107GongjuChungcheongnam-do, South Korea
    902.0×
  110. 107IksanJeollabuk-do, South Korea
    902.0×
  111. 107Hwaseong-siGyeonggi-do, South Korea
    902.0×
  112. 107TemucoAraucania, Chile
    902.0×
  113. 113ChangwonGyeongsangnam-do, South Korea
    902.0×
  114. 114SuncheonJeollanam-do, South Korea
    902.0×
  115. 114BusanBusan, South Korea
    902.0×
  116. 114NamsaJeollabuk-do, South Korea
    902.0×
  117. 117PhuketPhuket, Thailand
    892.0×
  118. 118RanongRanong province, Thailand
    892.0×
  119. 118Jeju CityJeju-do, South Korea
    892.0×
  120. 120RatchaburiRatchaburi, Thailand
    892.0×
  121. 120KimjeJeollabuk-do, South Korea
    892.0×
  122. 120Ansan-siGyeonggi-do, South Korea
    892.0×
  123. 120HanamGyeonggi-do, South Korea
    892.0×
  124. 120SejongSejong-si, South Korea
    892.0×
  125. 125TangjinChungcheongnam-do, South Korea
    892.0×
  126. 125ChinjuGyeongsangnam-do, South Korea
    892.0×
  127. 125GwangmyeongGyeonggi-do, South Korea
    892.0×
  128. 128SuwonGyeonggi-do, South Korea
    892.0×
  129. 129Gyeongsan-siGyeongsangbuk-do, South Korea
    881.9×
  130. 129WabuGyeonggi-do, South Korea
    881.9×
  131. 131DamyangJeollanam-do, South Korea
    881.9×
  132. 131AsanChungcheongnam-do, South Korea
    881.9×
  133. 131TehuacánPuebla, Mexico
    881.9×
  134. 134YangjuGyeonggi-do, South Korea
    881.9×
  135. 134Gimpo-siGyeonggi-do, South Korea
    881.9×
  136. 134KoperUrban Municipality of Koper, Slovenia
    881.9×
  137. 137OsanGyeonggi-do, South Korea
    881.9×
  138. 137Guri-siGyeonggi-do, South Korea
    881.9×
  139. 139Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    871.9×
  140. 140SeoulSeoul, South Korea
    871.9×
  141. 140JeonjuJeollabuk-do, South Korea
    871.9×
  142. 142AshgabatAshgabat, Turkmenistan
    871.9×
  143. 142GunsanJeollabuk-do, South Korea
    871.9×
  144. 142Ganghwa-gunIncheon, South Korea
    871.9×
  145. 142MurciaMurcia, Spain
    871.9×
  146. 142Barrio de PeralMurcia, Spain
    871.9×
  147. 147HwacheonGangwon-do, South Korea
    871.9×
  148. 147GaigeturiJeju-do, South Korea
    871.9×
  149. 149Bucheon-siGyeonggi-do, South Korea
    871.9×
  150. 149HongseongChungcheongnam-do, South Korea
    871.9×
  151. 151NaesŏGyeongsangnam-do, South Korea
    861.9×
  152. 152SantiagoSantiago Metropolitan, Chile
    861.9×
  153. 153Buri RamBuriram, Thailand
    861.8×
  154. 153WanjuJeollabuk-do, South Korea
    861.8×
  155. 153CuricóMaule Region, Chile
    861.8×
  156. 156KwangyangJeollanam-do, South Korea
    851.8×
  157. 157GijangBusan, South Korea
    851.8×
  158. 158TongyeongGyeongsangnam-do, South Korea
    851.8×
  159. 158SaijōEhime, Japan
    851.8×
  160. 160SantyokuGangwon-do, South Korea
    851.8×
  161. 160NiihamaEhime, Japan
    851.8×
  162. 160RabinalBaja Verapaz, Guatemala
    851.8×
  163. 163ImsilJeollabuk-do, South Korea
    851.8×
  164. 163Seongnam-siGyeonggi-do, South Korea
    851.8×
  165. 165ErlinTaiwan, Taiwan
    841.8×
  166. 165YangsanGyeongsangnam-do, South Korea
    841.8×
  167. 165GapyeongGyeonggi-do, South Korea
    841.8×
  168. 165MissionTexas, United States
    841.8×
  169. 169Prachin BuriPrachin Buri, Thailand
    841.8×
  170. 169Puerto AysénAysén, Chile
    841.8×
  171. 171Wan ChaiWan Chai, Hong Kong
    841.8×
  172. 171YangguGangwon-do, South Korea
    841.8×
  173. 171CheorwonGangwon-do, South Korea
    841.8×
  174. 171CholulaPuebla, Mexico
    841.8×
  175. 171CoyhaiqueAysén, Chile
    841.8×
  176. 176DaeguDaegu, South Korea
    841.8×
  177. 177CheonanChungcheongnam-do, South Korea
    841.8×
  178. 177JangheungJeollanam-do, South Korea
    841.8×
  179. 179SaraburiSaraburi, Thailand
    831.8×
  180. 179Anyang-siGyeonggi-do, South Korea
    831.8×
  181. 179AlgiersAlgiers, Algeria
    831.8×
  182. 182ShanghaiShanghai, China
    831.8×
  183. 182Phenix CityAlabama, United States
    831.8×
  184. 184MantuaLombardy, Italy
    831.7×
  185. 184Khlong Sam WaBangkok, Thailand
    831.7×
  186. 186Bang NaBangkok, Thailand
    821.7×
  187. 186AndongGyeongsangbuk-do, South Korea
    821.7×
  188. 186ChangnyeongGyeongsangnam-do, South Korea
    821.7×
  189. 189WaegwanGyeongsangbuk-do, South Korea
    821.7×
  190. 189QuinteroValparaiso, Chile
    821.7×
  191. 191Goyang-siGyeonggi-do, South Korea
    821.7×
  192. 191BeneventoCampania, Italy
    821.7×
  193. 191TalaganteSantiago Metropolitan, Chile
    821.7×
  194. 191Puente AltoSantiago Metropolitan, Chile
    821.7×
  195. 195YecheonGyeongsangbuk-do, South Korea
    821.7×
  196. 196Khlong LuangPathum Thani, Thailand
    811.7×
  197. 196MasanGwangju, South Korea
    811.7×
  198. 196HaenamJeollanam-do, South Korea
    811.7×
  199. 196HualquiBiobio, Chile
    811.7×
  200. 200Nakhon NayokNakhon Nayok, Thailand
    811.7×

Top 200 of 2,203 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 8, 2024, smogrank.com/history/2024-04-08 (accessed 3 Oct 2026).

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