SmogRank / History / April 2, 2024

Most polluted cities on April 2, 2024

2,194 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 239.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during April 2, 2024. All episodes.

← N'Djamena 239.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for April 2, 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
    32815.9×
  2. 2Mae SaiChiang Rai, Thailand
    2209.7×
  3. 3Vientianelow-cost sensorsVientiane Prefecture, Laos
    2028.5×
  4. 4NanNan, Thailand
    1917.5×
  5. 5PhayaoPhayao, Thailand
    1897.3×
  6. 5LampangLampang, Thailand
    1897.3×
  7. 7Chiang MaiChiang Mai, Thailand
    1836.7×
  8. 8Kathmandulow-cost sensorsBagmati Province, Nepal
    1816.6×
  9. 9UttaraditUttaradit, Thailand
    1786.3×
  10. 10PhraePhrae, Thailand
    1735.8×
  11. 11LamphunLamphun, Thailand
    1735.8×
  12. 12Lahorelow-cost sensorsPunjab, Pakistan
    1705.5×
  13. 13SukhothaiSukhothai, Thailand
    1695.4×
  14. 14Chiang RaiChiang Rai, Thailand
    1695.4×
  15. 15LoeiLoei, Thailand
    1695.4×
  16. 16KanchanaburiKanchanaburi, Thailand
    1665.1×
  17. 17Kamphaeng PhetKamphaeng Phet, Thailand
    1665.1×
  18. 18Mae SotTak, Thailand
    1624.8×
  19. 19Dhakalow-cost sensorsDhaka Division, Bangladesh
    1614.6×
  20. 19Udon ThaniUdon Thani, Thailand
    1614.6×
  21. 21Suphan BuriSuphan Buri, Thailand
    1604.6×
  22. 22KalasinKalasin, Thailand
    1604.5×
  23. 23PhichitPhichit, Thailand
    1594.4×
  24. 24Chai NatChai Nat, Thailand
    1584.3×
  25. 25ShenyangLiaoning, China
    1584.3×
  26. 26PhetchabunPhetchabun, Thailand
    1574.3×
  27. 27MukdahanMukdahan, Thailand
    1554.1×
  28. 27JakartaJakarta, Indonesia
    1554.1×
  29. 29DelhiDelhi, India
    1533.9×
  30. 30OsornoLos Lagos Region, Chile
    1533.9×
  31. 31Lop BuriLopburi, Thailand
    1523.8×
  32. 32Nong Bua LamphuNong Bua Lamphu, Thailand
    1523.8×
  33. 33BeijingBeijing, China
    1523.8×
  34. 34Sing BuriSing Buri, Thailand
    1493.7×
  35. 35ChaiyaphumChaiyaphum, Thailand
    1473.6×
  36. 36San Salvador TizatlalliMéxico, Mexico
    1463.6×
  37. 37KolkataWest Bengal, India
    1433.5×
  38. 37HanoiHanoi, Vietnam
    1433.5×
  39. 39Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1423.5×
  40. 40Sakon NakhonSakon Nakhon, Thailand
    1423.5×
  41. 41Nakhon SawanNakhon Sawan, Thailand
    1423.5×
  42. 41TolucaMéxico, Mexico
    1423.5×
  43. 43HyderabadTelangana, India
    1403.4×
  44. 44CairoCairo, Egypt
    1353.3×
  45. 45Roi EtRoi Et, Thailand
    1353.3×
  46. 46Khon KaenKhon Kaen, Thailand
    1323.2×
  47. 46Puerto AysénAysén, Chile
    1323.2×
  48. 48MumbaiMaharashtra, India
    1313.2×
  49. 49Puerto VarasLos Lagos Region, Chile
    1303.2×
  50. 50KigaliKigali, Rwanda
    1293.1×
  51. 51YasothonYasothon, Thailand
    1253.0×
  52. 52Amnat CharoenAmnat Charoen, Thailand
    1243.0×
  53. 53RēzekneRēzekne, Latvia
    1222.9×
  54. 54Nakhon RatchasimaNakhon Ratchasima, Thailand
    1212.9×
  55. 55TemucoAraucania, Chile
    1182.8×
  56. 56Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1162.8×
  57. 57RatchaburiRatchaburi, Thailand
    1162.8×
  58. 58Islamabadlow-cost sensorsIslamabad, Pakistan
    1112.6×
  59. 59Nakhon PathomNakhon Pathom, Thailand
    1112.6×
  60. 60CártamaAndalusia, Spain
    1102.6×
  61. 61VilniusVilnius, Lithuania
    1082.6×
  62. 62BaghdadBaghdad, Iraq
    1062.5×
  63. 63Guatemala CityGuatemala, Guatemala
    1042.5×
  64. 64SaraburiSaraburi, Thailand
    1042.4×
  65. 65CoyhaiqueAysén, Chile
    1032.4×
  66. 66PubalGyeonggi-do, South Korea
    1022.4×
  67. 67JinchengFukien, Taiwan
    1022.4×
  68. 68Wan ChaiWan Chai, Hong Kong
    1012.4×
  69. 69Ubon RatchathaniUbon Ratchathani, Thailand
    1012.4×
  70. 70ManamaManama, Bahrain
    992.3×
  71. 71Khlong LuangPathum Thani, Thailand
    992.3×
  72. 72Mueang NonthaburiNonthaburi, Thailand
    982.3×
  73. 72CelayaGuanajuato, Mexico
    982.3×
  74. 74GuangzhouGuangdong, China
    972.3×
  75. 75PhetchaburiPhetchaburi, Thailand
    972.3×
  76. 76SalorTashkent Region, Uzbekistan
    972.3×
  77. 77Nong KhaemBangkok, Thailand
    972.2×
  78. 78RanongRanong province, Thailand
    962.2×
  79. 79Tuen MunTuen Mun, Hong Kong
    962.2×
  80. 80Los ÁngelesBiobio, Chile
    952.2×
  81. 81Addis AbabaAddis Ababa, Ethiopia
    952.2×
  82. 81Hua HinPrachuap Khiri Khan, Thailand
    952.2×
  83. 83San Francisco TlalcilalcalpanMéxico, Mexico
    942.1×
  84. 84Si Maha PhotPrachin Buri, Thailand
    942.1×
  85. 85AthensAttica, Greece
    932.1×
  86. 86Mong KokYau Tsim Mong District, Hong Kong
    922.1×
  87. 87SeonghwanChungcheongnam-do, South Korea
    922.1×
  88. 88Nakhon NayokNakhon Nayok, Thailand
    922.1×
  89. 88Ciudad RealCastille-La Mancha, Spain
    922.1×
  90. 90BakuBaki, Azerbaijan
    912.1×
  91. 90Karachilow-cost sensorsSindh, Pakistan
    912.1×
  92. 90ChillánÑuble, Chile
    912.1×
  93. 93YesanChungcheongnam-do, South Korea
    912.0×
  94. 94ThessaloníkiCentral Macedonia, Greece
    912.0×
  95. 94Bang NaBangkok, Thailand
    912.0×
  96. 96HwadoGyeonggi-do, South Korea
    902.0×
  97. 97Ban Samae DamBangkok, Thailand
    892.0×
  98. 97AsanChungcheongnam-do, South Korea
    892.0×
  99. 99Bang KapiBangkok, Thailand
    892.0×
  100. 100BangkokBangkok, Thailand
    881.9×
  101. 100Icheon-siGyeonggi-do, South Korea
    881.9×
  102. 102YangjuGyeonggi-do, South Korea
    881.9×
  103. 102NacimientoBiobio, Chile
    881.9×
  104. 104YangonYangon, Myanmar
    881.9×
  105. 105Ciudad Benito JuárezNuevo León, Mexico
    881.9×
  106. 106Saphan SungBangkok, Thailand
    871.9×
  107. 107YeojuGyeonggi-do, South Korea
    871.9×
  108. 108PyeongtaekGyeonggi-do, South Korea
    871.9×
  109. 109Samut SakhonSamut Sakhon, Thailand
    861.9×
  110. 110SalamancaGuanajuato, Mexico
    861.9×
  111. 111Buri RamBuriram, Thailand
    861.9×
  112. 111Tsuen WanTsuen Wan, Hong Kong
    861.9×
  113. 111UlsanUlsan, South Korea
    861.9×
  114. 114CuranilahueBiobio, Chile
    861.9×
  115. 115AsprópyrgosAttica, Greece
    861.8×
  116. 115RigaRiga, Latvia
    861.8×
  117. 115Phra PradaengSamut Prakan, Thailand
    861.8×
  118. 118IksanJeollabuk-do, South Korea
    851.8×
  119. 119MiskolcBorsod-Abaúj-Zemplén, Hungary
    851.8×
  120. 119BelmopanCayo District, Belize
    851.8×
  121. 121San CarlosÑuble, Chile
    851.8×
  122. 122CoronelBiobio, Chile
    851.8×
  123. 123KaunasKaunas, Lithuania
    851.8×
  124. 124DushanbeDushanbe, Tajikistan
    841.8×
  125. 124Sham Shui PoSham Shui Po District, Hong Kong
    841.8×
  126. 126YeongjuGyeongsangbuk-do, South Korea
    841.8×
  127. 126JungpyongNorth Chungcheong, South Korea
    841.8×
  128. 128Puerto MonttLos Lagos Region, Chile
    841.8×
  129. 129Sai MaiBangkok, Thailand
    841.8×
  130. 130Kwai ChungKwai Tsing District, Hong Kong
    841.8×
  131. 130Hwaseong-siGyeonggi-do, South Korea
    841.8×
  132. 132WabuGyeonggi-do, South Korea
    831.8×
  133. 132RancaguaO'Higgins Region, Chile
    831.8×
  134. 134Khan Na YaoBangkok, Thailand
    831.8×
  135. 135Tin Shui WaiYuen Long, Hong Kong
    831.7×
  136. 135Chinch'ŏnNorth Chungcheong, South Korea
    831.7×
  137. 137Puente AltoSantiago Metropolitan, Chile
    831.7×
  138. 138Prachin BuriPrachin Buri, Thailand
    821.7×
  139. 138SeosanChungcheongnam-do, South Korea
    821.7×
  140. 138QuinteroValparaiso, Chile
    821.7×
  141. 141Sau Mau PingKwun Tong District, Hong Kong
    821.7×
  142. 142Tai PoTai Po, Hong Kong
    821.7×
  143. 143PohangGyeongsangbuk-do, South Korea
    821.7×
  144. 144Nong ChokBangkok, Thailand
    811.7×
  145. 144San Tung Chung HangIslands, Hong Kong
    811.7×
  146. 144AnseongGyeonggi-do, South Korea
    811.7×
  147. 147CuricóMaule Region, Chile
    811.7×
  148. 148ShulinTaipei, Taiwan
    801.7×
  149. 148Ulan BatorUlaanbaatar, Mongolia
    801.7×
  150. 148SantiagoSantiago Metropolitan, Chile
    801.7×
  151. 151JeddahMecca Region, Saudi Arabia
    801.7×
  152. 151SejongSejong-si, South Korea
    801.7×
  153. 153PátraWest Greece, Greece
    801.6×
  154. 153RengoO'Higgins Region, Chile
    801.6×
  155. 155BuanJeollabuk-do, South Korea
    801.6×
  156. 155KimjeJeollabuk-do, South Korea
    801.6×
  157. 155TaoyuanTaiwan, Taiwan
    801.6×
  158. 158Sha TinSha Tin, Hong Kong
    791.6×
  159. 158HongseongChungcheongnam-do, South Korea
    791.6×
  160. 160NonsanChungcheongnam-do, South Korea
    791.6×
  161. 160Ganghwa-gunIncheon, South Korea
    791.6×
  162. 162GrajewoPodlasie, Poland
    791.6×
  163. 163Samut PrakanSamut Prakan, Thailand
    791.6×
  164. 163YeonilGyeongsangbuk-do, South Korea
    791.6×
  165. 165SurinSurin, Thailand
    781.6×
  166. 165GunsanJeollabuk-do, South Korea
    781.6×
  167. 167NamsaJeollabuk-do, South Korea
    781.6×
  168. 168SeoulSeoul, South Korea
    781.6×
  169. 168NamyangjuGyeonggi-do, South Korea
    781.6×
  170. 170Cheongju-siNorth Chungcheong, South Korea
    781.6×
  171. 170CheonanChungcheongnam-do, South Korea
    781.6×
  172. 170HanamGyeonggi-do, South Korea
    781.6×
  173. 170TalaganteSantiago Metropolitan, Chile
    781.6×
  174. 174BiałystokPodlasie, Poland
    781.6×
  175. 175SangjuGyeongsangbuk-do, South Korea
    771.6×
  176. 175TalcaMaule Region, Chile
    771.6×
  177. 177Guri-siGyeonggi-do, South Korea
    771.5×
  178. 177GumiGyeongsangbuk-do, South Korea
    771.5×
  179. 179Hat YaiSongkhla, Thailand
    761.5×
  180. 179ConcónValparaiso, Chile
    761.5×
  181. 181Si Sa KetSi Sa Ket, Thailand
    761.5×
  182. 181Ban Khlong PrawetBangkok, Thailand
    761.5×
  183. 181IncheonIncheon, South Korea
    761.5×
  184. 184WŏnjuGangwon-do, South Korea
    761.5×
  185. 184YŏnmuChungcheongnam-do, South Korea
    761.5×
  186. 186Gimpo-siGyeonggi-do, South Korea
    761.5×
  187. 187Viña del MarValparaiso, Chile
    761.5×
  188. 187TalcahuanoBiobio, Chile
    761.5×
  189. 187MissionTexas, United States
    761.5×
  190. 190HsinchuTaiwan, Taiwan
    751.5×
  191. 190WaegwanGyeongsangbuk-do, South Korea
    751.5×
  192. 190GwangjuGyeonggi-do, South Korea
    751.5×
  193. 193Bang Bo DistrictSamut Prakan, Thailand
    751.5×
  194. 193Goyang-siGyeonggi-do, South Korea
    751.5×
  195. 193CoquimboCoquimbo Region, Chile
    751.5×
  196. 196DaxiTaiwan, Taiwan
    751.5×
  197. 196San Luis de la PazGuanajuato, Mexico
    751.5×
  198. 198PueblaPuebla, Mexico
    751.5×
  199. 199HayangGyeongsangbuk-do, South Korea
    751.5×
  200. 200Şabāḩ as SālimMubārak al Kabīr, Kuwait
    741.4×

Top 200 of 2,194 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 2, 2024, smogrank.com/history/2024-04-02 (accessed 3 Oct 2026).

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