SmogRank / History / April 5, 2024

Most polluted cities on April 5, 2024

2,221 cities ranked by their average PM2.5 over the day; the worst was Piedras Negras, Mexico, at 938.0 µg/m³. Each city's own local calendar day.

← Piedras Negras 938.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for April 5, 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+62.5×
  2. 2N'DjamenaN’Djaména, Chad
    31815.6×
  3. 3Mae SaiChiang Rai, Thailand
    26312.5×
  4. 4Vientianelow-cost sensorsVientiane Prefecture, Laos
    1947.8×
  5. 4Ponca CityOklahoma, United States
    1947.8×
  6. 6LampangLampang, Thailand
    1917.5×
  7. 7Chiang MaiChiang Mai, Thailand
    1917.5×
  8. 7NanNan, Thailand
    1917.5×
  9. 9PhayaoPhayao, Thailand
    1897.3×
  10. 10Chiang RaiChiang Rai, Thailand
    1897.3×
  11. 11LoeiLoei, Thailand
    1887.2×
  12. 12LamphunLamphun, Thailand
    1796.4×
  13. 13ShenyangLiaoning, China
    1756.0×
  14. 14Kathmandulow-cost sensorsBagmati Province, Nepal
    1715.6×
  15. 15Udon ThaniUdon Thani, Thailand
    1705.5×
  16. 16DerbyKansas, United States
    1695.5×
  17. 17KalasinKalasin, Thailand
    1695.4×
  18. 18WichitaKansas, United States
    1695.4×
  19. 19PhraePhrae, Thailand
    1685.3×
  20. 20UttaraditUttaradit, Thailand
    1645.0×
  21. 21Lahorelow-cost sensorsPunjab, Pakistan
    1644.9×
  22. 22Dhakalow-cost sensorsDhaka Division, Bangladesh
    1644.9×
  23. 23MukdahanMukdahan, Thailand
    1634.8×
  24. 24SukhothaiSukhothai, Thailand
    1624.8×
  25. 24Kamphaeng PhetKamphaeng Phet, Thailand
    1624.8×
  26. 26Nong Bua LamphuNong Bua Lamphu, Thailand
    1604.6×
  27. 27PhichitPhichit, Thailand
    1574.3×
  28. 28PhetchabunPhetchabun, Thailand
    1574.2×
  29. 29Puerto MonttLos Lagos Region, Chile
    1554.1×
  30. 30ChaiyaphumChaiyaphum, Thailand
    1554.1×
  31. 31CelayaGuanajuato, Mexico
    1544.0×
  32. 32Nakhon SawanNakhon Sawan, Thailand
    1543.9×
  33. 33Roi EtRoi Et, Thailand
    1533.9×
  34. 34YasothonYasothon, Thailand
    1533.9×
  35. 35Chai NatChai Nat, Thailand
    1533.9×
  36. 36KolkataWest Bengal, India
    1523.8×
  37. 37Khon KaenKhon Kaen, Thailand
    1523.8×
  38. 38KanchanaburiKanchanaburi, Thailand
    1503.7×
  39. 39Amnat CharoenAmnat Charoen, Thailand
    1493.7×
  40. 40BeijingBeijing, China
    1473.6×
  41. 41OsornoLos Lagos Region, Chile
    1443.5×
  42. 42Lop BuriLopburi, Thailand
    1433.5×
  43. 43Nakhon RatchasimaNakhon Ratchasima, Thailand
    1423.5×
  44. 44Ubon RatchathaniUbon Ratchathani, Thailand
    1423.5×
  45. 45CairoCairo, Egypt
    1413.4×
  46. 46AstanaAstana, Kazakhstan
    1403.4×
  47. 47Sing BuriSing Buri, Thailand
    1353.3×
  48. 48Puerto VarasLos Lagos Region, Chile
    1343.3×
  49. 49Mae SotTak, Thailand
    1283.1×
  50. 50Suphan BuriSuphan Buri, Thailand
    1253.0×
  51. 51HyderabadTelangana, India
    1202.9×
  52. 52BaghdadBaghdad, Iraq
    1152.7×
  53. 53HualquiBiobio, Chile
    1132.7×
  54. 54HanoiHanoi, Vietnam
    1122.7×
  55. 55Buri RamBuriram, Thailand
    1112.6×
  56. 56TulsaOklahoma, United States
    1082.6×
  57. 57Islamabadlow-cost sensorsIslamabad, Pakistan
    1042.5×
  58. 58Karachilow-cost sensorsSindh, Pakistan
    1012.4×
  59. 59Si Maha PhotPrachin Buri, Thailand
    1012.4×
  60. 60Si Sa KetSi Sa Ket, Thailand
    982.3×
  61. 61SurinSurin, Thailand
    982.3×
  62. 62ShanghaiShanghai, China
    972.3×
  63. 63RatchaburiRatchaburi, Thailand
    972.2×
  64. 63Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    972.2×
  65. 63JenksOklahoma, United States
    972.2×
  66. 66La UniónLos Ríos Region, Chile
    962.2×
  67. 67Hua HinPrachuap Khiri Khan, Thailand
    942.1×
  68. 68TemucoAraucania, Chile
    932.1×
  69. 69SalamancaGuanajuato, Mexico
    932.1×
  70. 70Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    922.1×
  71. 70SalorTashkent Region, Uzbekistan
    922.1×
  72. 72SaraburiSaraburi, Thailand
    912.1×
  73. 73Khlong Sam WaBangkok, Thailand
    912.0×
  74. 74Wan ChaiWan Chai, Hong Kong
    902.0×
  75. 75PhetchaburiPhetchaburi, Thailand
    892.0×
  76. 75MumbaiMaharashtra, India
    892.0×
  77. 77Khlong LuangPathum Thani, Thailand
    892.0×
  78. 78Bang NaBangkok, Thailand
    892.0×
  79. 79Prachin BuriPrachin Buri, Thailand
    892.0×
  80. 80Nakhon NayokNakhon Nayok, Thailand
    881.9×
  81. 80Mong KokYau Tsim Mong District, Hong Kong
    881.9×
  82. 80Oklahoma CityOklahoma, United States
    881.9×
  83. 83KaohsiungTakao, Taiwan
    871.9×
  84. 84SantiagoSantiago Metropolitan, Chile
    871.9×
  85. 85Şabāḩ as SālimMubārak al Kabīr, Kuwait
    861.9×
  86. 86Surat ThaniSurat Thani, Thailand
    851.8×
  87. 86PhuketPhuket, Thailand
    851.8×
  88. 88YangonYangon, Myanmar
    851.8×
  89. 89AshgabatAshgabat, Turkmenistan
    841.8×
  90. 90RanongRanong province, Thailand
    831.8×
  91. 91Ban Samae DamBangkok, Thailand
    831.8×
  92. 91EdmondOklahoma, United States
    831.8×
  93. 93JeddahMecca Region, Saudi Arabia
    831.7×
  94. 93QuinteroValparaiso, Chile
    831.7×
  95. 95ZhushanTaiwan, Taiwan
    821.7×
  96. 96Puente AltoSantiago Metropolitan, Chile
    821.7×
  97. 97Tuen MunTuen Mun, Hong Kong
    821.7×
  98. 98Santa Anita - Los FicusLima region, Peru
    821.7×
  99. 99TainanTaiwan, Taiwan
    811.7×
  100. 99FengshanTakao, Taiwan
    811.7×
  101. 99Sham Shui PoSham Shui Po District, Hong Kong
    811.7×
  102. 102Nong KhaemBangkok, Thailand
    811.7×
  103. 102Nakhon PathomNakhon Pathom, Thailand
    811.7×
  104. 102Villa Poeta José Gálvez BarrenecheaLima region, Peru
    811.7×
  105. 105ChaozhouTaiwan, Taiwan
    811.7×
  106. 105Abujalow-cost sensorsFCT, Nigeria
    811.7×
  107. 105Khan Na YaoBangkok, Thailand
    811.7×
  108. 108GulfportMississippi, United States
    811.7×
  109. 109YongkangTaiwan, Taiwan
    801.7×
  110. 109Ganghwa-gunIncheon, South Korea
    801.7×
  111. 111Mueang NonthaburiNonthaburi, Thailand
    801.6×
  112. 111Nong ChokBangkok, Thailand
    801.6×
  113. 113Kampalalow-cost sensorsCentral Region, Uganda
    801.6×
  114. 114KigaliKigali, Rwanda
    791.6×
  115. 115AbasoloGuanajuato, Mexico
    791.6×
  116. 116Phra PradaengSamut Prakan, Thailand
    791.6×
  117. 116HwadoGyeonggi-do, South Korea
    791.6×
  118. 118BangkokBangkok, Thailand
    791.6×
  119. 119ĆuprijaCentral Serbia, Serbia
    781.6×
  120. 119Chiayi CityTaiwan, Taiwan
    781.6×
  121. 119IrapuatoGuanajuato, Mexico
    781.6×
  122. 122NacimientoBiobio, Chile
    781.6×
  123. 123SarajevoFederation of B&H, Bosnia and Herzegovina
    781.6×
  124. 124Hwaseong-siGyeonggi-do, South Korea
    771.6×
  125. 125Hat YaiSongkhla, Thailand
    771.5×
  126. 125YeojuGyeonggi-do, South Korea
    771.5×
  127. 127BuanJeollabuk-do, South Korea
    771.5×
  128. 127TalaganteSantiago Metropolitan, Chile
    771.5×
  129. 129SeonghwanChungcheongnam-do, South Korea
    771.5×
  130. 130DouliuTaiwan, Taiwan
    761.5×
  131. 130Sai MaiBangkok, Thailand
    761.5×
  132. 132PuliTaiwan, Taiwan
    761.5×
  133. 133Tsuen WanTsuen Wan, Hong Kong
    761.5×
  134. 133DamyangJeollanam-do, South Korea
    761.5×
  135. 133ToméBiobio, Chile
    761.5×
  136. 133Ciudad JuárezChihuahua, Mexico
    761.5×
  137. 137Bang Bo DistrictSamut Prakan, Thailand
    761.5×
  138. 138HongseongChungcheongnam-do, South Korea
    761.5×
  139. 138JangseongJeollanam-do, South Korea
    761.5×
  140. 140GunsanJeollabuk-do, South Korea
    751.5×
  141. 140Gimpo-siGyeonggi-do, South Korea
    751.5×
  142. 142GwangjuGwangju, South Korea
    751.5×
  143. 143Bang KapiBangkok, Thailand
    751.5×
  144. 143RabinalBaja Verapaz, Guatemala
    751.5×
  145. 143CuricóMaule Region, Chile
    751.5×
  146. 143ConcónValparaiso, Chile
    751.5×
  147. 143CoyhaiqueAysén, Chile
    751.5×
  148. 148BoryeongChungcheongnam-do, South Korea
    751.5×
  149. 148IksanJeollabuk-do, South Korea
    751.5×
  150. 148Viña del MarValparaiso, Chile
    751.5×
  151. 151GimcheonGyeongsangbuk-do, South Korea
    741.4×
  152. 151IncheonIncheon, South Korea
    741.4×
  153. 151Icheon-siGyeonggi-do, South Korea
    741.4×
  154. 151GwangmyeongGyeonggi-do, South Korea
    741.4×
  155. 155YesanChungcheongnam-do, South Korea
    741.4×
  156. 156Ban Khlong PrawetBangkok, Thailand
    741.4×
  157. 156León de los AldamaGuanajuato, Mexico
    741.4×
  158. 158Ban ChangRayong, Thailand
    741.4×
  159. 158CoronelBiobio, Chile
    741.4×
  160. 158Saphan SungBangkok, Thailand
    741.4×
  161. 161Taesal-liChungcheongnam-do, South Korea
    741.4×
  162. 162HualpénBiobio, Chile
    731.4×
  163. 162SinanJeollanam-do, South Korea
    731.4×
  164. 164Ban Talat BuengChon Buri, Thailand
    731.4×
  165. 164TaibaoTaiwan, Taiwan
    731.4×
  166. 164Kwai ChungKwai Tsing District, Hong Kong
    731.4×
  167. 164Goyang-siGyeonggi-do, South Korea
    731.4×
  168. 164IshinomakiMiyagi, Japan
    731.4×
  169. 164CuranilahueBiobio, Chile
    731.4×
  170. 164MooreOklahoma, United States
    731.4×
  171. 171SuwonGyeonggi-do, South Korea
    731.4×
  172. 171Ansan-siGyeonggi-do, South Korea
    731.4×
  173. 173Samut SakhonSamut Sakhon, Thailand
    731.4×
  174. 173YeongjuGyeongsangbuk-do, South Korea
    731.4×
  175. 173JangheungJeollanam-do, South Korea
    731.4×
  176. 173CoquimboCoquimbo Region, Chile
    731.4×
  177. 177AricaArica y Parinacota Region, Chile
    731.4×
  178. 178Samut PrakanSamut Prakan, Thailand
    721.4×
  179. 178AranyaprathetSa Kaeo, Thailand
    721.4×
  180. 178MasanGwangju, South Korea
    721.4×
  181. 181AntananarivoAnalamanga, Madagascar
    721.4×
  182. 181Guri-siGyeonggi-do, South Korea
    721.4×
  183. 183Tai PoTai Po, Hong Kong
    721.4×
  184. 183TocopillaAntofagasta, Chile
    721.4×
  185. 185TrangTrang, Thailand
    721.4×
  186. 185GumiGyeongsangbuk-do, South Korea
    721.4×
  187. 185PubalGyeonggi-do, South Korea
    721.4×
  188. 188SeoulSeoul, South Korea
    721.3×
  189. 188JeongeupJeollabuk-do, South Korea
    721.3×
  190. 190DushanbeDushanbe, Tajikistan
    711.3×
  191. 190Yangp'yŏngGyeonggi-do, South Korea
    711.3×
  192. 192AsanChungcheongnam-do, South Korea
    711.3×
  193. 192AntofagastaAntofagasta, Chile
    711.3×
  194. 194San Tung Chung HangIslands, Hong Kong
    711.3×
  195. 194SokchoGangwon-do, South Korea
    711.3×
  196. 194SangjuGyeongsangbuk-do, South Korea
    711.3×
  197. 194PyeongtaekGyeonggi-do, South Korea
    711.3×
  198. 194Bucheon-siGyeonggi-do, South Korea
    711.3×
  199. 199Tin Shui WaiYuen Long, Hong Kong
    711.3×
  200. 199MunsanGyeonggi-do, South Korea
    711.3×

Top 200 of 2,221 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 5, 2024, smogrank.com/history/2024-04-05 (accessed 3 Oct 2026).

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