SmogRank / History / April 12, 2024

Most polluted cities on April 12, 2024

2,101 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 149.0 µg/m³. Each city's own local calendar day.

← Coyhaique 149.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for April 12, 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. 1CoyhaiqueAysén, Chile
    2249.9×
  2. 2N'DjamenaN’Djaména, Chad
    2098.9×
  3. 3BeijingBeijing, China
    2078.8×
  4. 4Kathmandulow-cost sensorsBagmati Province, Nepal
    1816.6×
  5. 5Dhakalow-cost sensorsDhaka Division, Bangladesh
    1796.3×
  6. 6Ubon RatchathaniUbon Ratchathani, Thailand
    1756.0×
  7. 7DelhiDelhi, India
    1735.8×
  8. 8HualpénBiobio, Chile
    1725.7×
  9. 9KalasinKalasin, Thailand
    1675.2×
  10. 10SurinSurin, Thailand
    1604.6×
  11. 11KolkataWest Bengal, India
    1604.5×
  12. 12YasothonYasothon, Thailand
    1594.5×
  13. 13Si Sa KetSi Sa Ket, Thailand
    1584.3×
  14. 14KanchanaburiKanchanaburi, Thailand
    1564.2×
  15. 15MukdahanMukdahan, Thailand
    1564.2×
  16. 16Vientianelow-cost sensorsVientiane Prefecture, Laos
    1554.1×
  17. 17Roi EtRoi Et, Thailand
    1544.0×
  18. 18Chai NatChai Nat, Thailand
    1544.0×
  19. 19Amnat CharoenAmnat Charoen, Thailand
    1544.0×
  20. 20Buri RamBuriram, Thailand
    1533.9×
  21. 21Nakhon RatchasimaNakhon Ratchasima, Thailand
    1523.8×
  22. 22Kamphaeng PhetKamphaeng Phet, Thailand
    1513.7×
  23. 23Khon KaenKhon Kaen, Thailand
    1493.7×
  24. 24La OrotavaCanary Islands, Spain
    1443.5×
  25. 25Sing BuriSing Buri, Thailand
    1443.5×
  26. 26CártamaAndalusia, Spain
    1413.5×
  27. 27Nakhon SawanNakhon Sawan, Thailand
    1403.4×
  28. 28La UniónLos Ríos Region, Chile
    1373.3×
  29. 29Suphan BuriSuphan Buri, Thailand
    1363.3×
  30. 30ChaiyaphumChaiyaphum, Thailand
    1363.3×
  31. 31Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1353.3×
  32. 32NacimientoBiobio, Chile
    1343.2×
  33. 33Nakhon NayokNakhon Nayok, Thailand
    1333.2×
  34. 34Udon ThaniUdon Thani, Thailand
    1333.2×
  35. 35Lop BuriLopburi, Thailand
    1323.2×
  36. 36PhichitPhichit, Thailand
    1313.2×
  37. 37Mae SaiChiang Rai, Thailand
    1293.1×
  38. 37YangonYangon, Myanmar
    1293.1×
  39. 39TalcahuanoBiobio, Chile
    1293.1×
  40. 40Si Maha PhotPrachin Buri, Thailand
    1273.1×
  41. 40Puerto MonttLos Lagos Region, Chile
    1273.1×
  42. 42Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1243.0×
  43. 43Bang NaBangkok, Thailand
    1222.9×
  44. 44SaraburiSaraburi, Thailand
    1222.9×
  45. 45TemucoAraucania, Chile
    1212.9×
  46. 46KigaliKigali, Rwanda
    1212.9×
  47. 47SukhothaiSukhothai, Thailand
    1202.9×
  48. 48RatchaburiRatchaburi, Thailand
    1202.9×
  49. 49LoeiLoei, Thailand
    1192.9×
  50. 50Khlong LuangPathum Thani, Thailand
    1182.8×
  51. 51Sakon NakhonSakon Nakhon, Thailand
    1172.8×
  52. 51AranyaprathetSa Kaeo, Thailand
    1172.8×
  53. 51Los ÁngelesBiobio, Chile
    1172.8×
  54. 54LampangLampang, Thailand
    1162.8×
  55. 55BangkokBangkok, Thailand
    1162.8×
  56. 56UttaraditUttaradit, Thailand
    1152.7×
  57. 57Mueang NonthaburiNonthaburi, Thailand
    1152.7×
  58. 57Puerto AysénAysén, Chile
    1152.7×
  59. 59Nong Bua LamphuNong Bua Lamphu, Thailand
    1142.7×
  60. 60TratTrat, Thailand
    1142.7×
  61. 61CuranilahueBiobio, Chile
    1142.7×
  62. 62Nong KhaemBangkok, Thailand
    1122.7×
  63. 63Chiang MaiChiang Mai, Thailand
    1112.6×
  64. 63NanNan, Thailand
    1112.6×
  65. 65Bang Khun ThianBangkok, Thailand
    1102.6×
  66. 66GuangzhouGuangdong, China
    1092.6×
  67. 67Phra PradaengSamut Prakan, Thailand
    1082.6×
  68. 67PhetchabunPhetchabun, Thailand
    1082.6×
  69. 69Chiang RaiChiang Rai, Thailand
    1082.6×
  70. 70HanoiHanoi, Vietnam
    1082.6×
  71. 71Mae SotTak, Thailand
    1072.5×
  72. 72Lahorelow-cost sensorsPunjab, Pakistan
    1062.5×
  73. 73Ban Samae DamBangkok, Thailand
    1062.5×
  74. 74Bang KapiBangkok, Thailand
    1062.5×
  75. 75PhraePhrae, Thailand
    1052.5×
  76. 76Bang Bo DistrictSamut Prakan, Thailand
    1032.4×
  77. 77PhayaoPhayao, Thailand
    1022.4×
  78. 78SarajevoFederation of B&H, Bosnia and Herzegovina
    1002.3×
  79. 79Samut SakhonSamut Sakhon, Thailand
    992.3×
  80. 79Samut PrakanSamut Prakan, Thailand
    992.3×
  81. 79OsornoLos Lagos Region, Chile
    992.3×
  82. 82HyderabadTelangana, India
    992.3×
  83. 83ZhushanTaiwan, Taiwan
    992.3×
  84. 84Nakhon PathomNakhon Pathom, Thailand
    992.3×
  85. 85HualquiBiobio, Chile
    972.3×
  86. 86Santa Anita - Los FicusLima region, Peru
    972.3×
  87. 87SalorTashkent Region, Uzbekistan
    972.3×
  88. 88PhetchaburiPhetchaburi, Thailand
    972.2×
  89. 88ValdiviaLos Ríos Region, Chile
    972.2×
  90. 88TaoyuanTaiwan, Taiwan
    972.2×
  91. 91ChillánÑuble, Chile
    972.2×
  92. 92ShulinTaipei, Taiwan
    962.2×
  93. 92NeiliTaiwan, Taiwan
    962.2×
  94. 94Puerto VarasLos Lagos Region, Chile
    952.2×
  95. 94CoronelBiobio, Chile
    952.2×
  96. 96LamphunLamphun, Thailand
    942.2×
  97. 97San CarlosÑuble, Chile
    942.1×
  98. 98TaipeiTaiwan, Taiwan
    932.1×
  99. 99ZhudongTaiwan, Taiwan
    932.1×
  100. 100New Taipei CityTaipei, Taiwan
    932.1×
  101. 101ShenyangLiaoning, China
    922.1×
  102. 102Wan ChaiWan Chai, Hong Kong
    922.1×
  103. 103DaxiTaiwan, Taiwan
    922.1×
  104. 103PuliTaiwan, Taiwan
    922.1×
  105. 105DouliuTaiwan, Taiwan
    912.0×
  106. 106NantouTaiwan, Taiwan
    912.0×
  107. 107ToufenTaiwan, Taiwan
    902.0×
  108. 108Puente AltoSantiago Metropolitan, Chile
    902.0×
  109. 109HsinchuTaiwan, Taiwan
    902.0×
  110. 109XizhiTaipei, Taiwan
    902.0×
  111. 111Villa Poeta José Gálvez BarrenecheaLima region, Peru
    892.0×
  112. 112CairoCairo, Egypt
    881.9×
  113. 113XizhouTaiwan, Taiwan
    881.9×
  114. 114Ciudad JuárezChihuahua, Mexico
    871.9×
  115. 115San Pedro de la PazBiobio, Chile
    871.9×
  116. 116TaichungTaiwan, Taiwan
    861.9×
  117. 116ZhubeiTaiwan, Taiwan
    861.9×
  118. 118ChanthaburiChanthaburi, Thailand
    861.9×
  119. 118RancaguaO'Higgins Region, Chile
    861.9×
  120. 120Hua HinPrachuap Khiri Khan, Thailand
    861.8×
  121. 120QuillotaValparaiso, Chile
    861.8×
  122. 122Laem ChabangChon Buri, Thailand
    851.8×
  123. 122MaspalomasCanary Islands, Spain
    851.8×
  124. 124Ban Khlong PrawetBangkok, Thailand
    851.8×
  125. 125Abujalow-cost sensorsFCT, Nigeria
    851.8×
  126. 126ĆuprijaCentral Serbia, Serbia
    851.8×
  127. 127AntananarivoAnalamanga, Madagascar
    851.8×
  128. 127Santa Cruz de TenerifeCanary Islands, Spain
    851.8×
  129. 127UžiceCentral Serbia, Serbia
    851.8×
  130. 127Guatemala CityGuatemala, Guatemala
    851.8×
  131. 131Karachilow-cost sensorsSindh, Pakistan
    841.8×
  132. 131SanzhiTaipei, Taiwan
    841.8×
  133. 133JinchengFukien, Taiwan
    841.8×
  134. 134ErlinTaiwan, Taiwan
    831.8×
  135. 135MiaoliTaiwan, Taiwan
    831.8×
  136. 136VillarricaAraucania, Chile
    831.8×
  137. 136ToméBiobio, Chile
    831.8×
  138. 138YongkangTaiwan, Taiwan
    831.7×
  139. 138ConcepciónBiobio, Chile
    831.7×
  140. 140Islamabadlow-cost sensorsIslamabad, Pakistan
    821.7×
  141. 141BuziTaiwan, Taiwan
    821.7×
  142. 142Ban Talat BuengChon Buri, Thailand
    821.7×
  143. 143Chiayi CityTaiwan, Taiwan
    811.7×
  144. 143RabinalBaja Verapaz, Guatemala
    811.7×
  145. 145FengshanTakao, Taiwan
    801.7×
  146. 145Tuen MunTuen Mun, Hong Kong
    801.7×
  147. 147ValjevoCentral Serbia, Serbia
    801.6×
  148. 148SkellefteåVästerbotten, Sweden
    801.6×
  149. 149ChanghuaTaiwan, Taiwan
    801.6×
  150. 149CelayaGuanajuato, Mexico
    801.6×
  151. 151Tin Shui WaiYuen Long, Hong Kong
    801.6×
  152. 151Mong KokYau Tsim Mong District, Hong Kong
    801.6×
  153. 153SatunSatun, Thailand
    791.6×
  154. 153Ban ChangRayong, Thailand
    791.6×
  155. 153ChiguayanteBiobio, Chile
    791.6×
  156. 156ConcónValparaiso, Chile
    791.6×
  157. 157KaohsiungTakao, Taiwan
    791.6×
  158. 158Novi PazarCentral Serbia, Serbia
    781.6×
  159. 158FontanaCalifornia, United States
    781.6×
  160. 160RengoO'Higgins Region, Chile
    781.6×
  161. 161BeigangTaiwan, Taiwan
    771.5×
  162. 162PhuketPhuket, Thailand
    771.5×
  163. 163TaibaoTaiwan, Taiwan
    771.5×
  164. 163SantiagoSantiago Metropolitan, Chile
    771.5×
  165. 165ErlunTaiwan, Taiwan
    771.5×
  166. 165QuinteroValparaiso, Chile
    771.5×
  167. 167TainanTaiwan, Taiwan
    761.5×
  168. 168San Tung Chung HangIslands, Hong Kong
    761.5×
  169. 169RuseRuse, Bulgaria
    761.5×
  170. 169Jastrzębie ZdrójSilesia, Poland
    761.5×
  171. 171Kwai ChungKwai Tsing District, Hong Kong
    761.5×
  172. 171SalamancaGuanajuato, Mexico
    761.5×
  173. 173BelgradeCentral Serbia, Serbia
    751.5×
  174. 173MumbaiMaharashtra, India
    751.5×
  175. 173Tai PoTai Po, Hong Kong
    751.5×
  176. 176KraljevoCentral Serbia, Serbia
    751.5×
  177. 176Bielsko-BialaSilesia, Poland
    751.5×
  178. 178Addis AbabaAddis Ababa, Ethiopia
    751.5×
  179. 178KragujevacCentral Serbia, Serbia
    751.5×
  180. 180NišCentral Serbia, Serbia
    751.5×
  181. 181KeelungTaiwan, Taiwan
    741.4×
  182. 181Sham Shui PoSham Shui Po District, Hong Kong
    741.4×
  183. 183ZemunCentral Serbia, Serbia
    741.4×
  184. 183Ulan BatorUlaanbaatar, Mongolia
    741.4×
  185. 183CuricóMaule Region, Chile
    741.4×
  186. 186LazarevacCentral Serbia, Serbia
    741.4×
  187. 186Tsuen WanTsuen Wan, Hong Kong
    741.4×
  188. 188RayongRayong, Thailand
    731.4×
  189. 188AntofagastaAntofagasta, Chile
    731.4×
  190. 188León de los AldamaGuanajuato, Mexico
    731.4×
  191. 191AstanaAstana, Kazakhstan
    731.4×
  192. 191Sau Mau PingKwun Tong District, Hong Kong
    731.4×
  193. 193JakartaJakarta, Indonesia
    731.4×
  194. 194XinyingTaiwan, Taiwan
    731.4×
  195. 195ÖstersundJämtland, Sweden
    721.4×
  196. 195AostaAosta Valley, Italy
    721.4×
  197. 197Viña del MarValparaiso, Chile
    721.4×
  198. 198SmederevoCentral Serbia, Serbia
    721.4×
  199. 199VictoriaCentral and Western, Hong Kong
    711.3×
  200. 199Granadilla de AbonaCanary Islands, Spain
    711.3×

Top 200 of 2,101 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 12, 2024, smogrank.com/history/2024-04-12 (accessed 3 Oct 2026).

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