SmogRank / History / April 22, 2024

Most polluted cities on April 22, 2024

2,402 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 156.0 µg/m³. Each city's own local calendar day.

← Coyhaique 156.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for April 22, 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
    23110.4×
  2. 2Kathmandulow-cost sensorsBagmati Province, Nepal
    1947.8×
  3. 3Ubon RatchathaniUbon Ratchathani, Thailand
    1766.1×
  4. 4TlaquepaqueJalisco, Mexico
    1735.8×
  5. 5BeijingBeijing, China
    1725.7×
  6. 6KalasinKalasin, Thailand
    1675.2×
  7. 7Vientianelow-cost sensorsVientiane Prefecture, Laos
    1655.0×
  8. 8NanNan, Thailand
    1624.8×
  9. 9PhayaoPhayao, Thailand
    1614.6×
  10. 10Mae SaiChiang Rai, Thailand
    1614.6×
  11. 11UttaraditUttaradit, Thailand
    1594.5×
  12. 12Dhakalow-cost sensorsDhaka Division, Bangladesh
    1574.3×
  13. 13Chiang MaiChiang Mai, Thailand
    1554.1×
  14. 14MukdahanMukdahan, Thailand
    1554.1×
  15. 15LampangLampang, Thailand
    1533.9×
  16. 16Sing BuriSing Buri, Thailand
    1523.8×
  17. 16LoeiLoei, Thailand
    1523.8×
  18. 18PhraePhrae, Thailand
    1523.8×
  19. 19Nakhon SawanNakhon Sawan, Thailand
    1523.8×
  20. 20PhichitPhichit, Thailand
    1513.7×
  21. 21Kamphaeng PhetKamphaeng Phet, Thailand
    1513.7×
  22. 22N'DjamenaN’Djaména, Chad
    1473.6×
  23. 22OsornoLos Lagos Region, Chile
    1473.6×
  24. 24PhetchabunPhetchabun, Thailand
    1463.6×
  25. 25Santa Anita - Los FicusLima region, Peru
    1463.6×
  26. 26KolkataWest Bengal, India
    1423.5×
  27. 26Lop BuriLopburi, Thailand
    1423.5×
  28. 28SukhothaiSukhothai, Thailand
    1423.5×
  29. 29YasothonYasothon, Thailand
    1413.4×
  30. 30RatchaburiRatchaburi, Thailand
    1393.4×
  31. 30Amnat CharoenAmnat Charoen, Thailand
    1393.4×
  32. 32Sakon NakhonSakon Nakhon, Thailand
    1393.4×
  33. 33Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1383.4×
  34. 33JakartaJakarta, Indonesia
    1383.4×
  35. 35ÖstersundJämtland, Sweden
    1373.4×
  36. 36ChaiyaphumChaiyaphum, Thailand
    1363.3×
  37. 37Udon ThaniUdon Thani, Thailand
    1353.3×
  38. 38Suphan BuriSuphan Buri, Thailand
    1343.3×
  39. 39LamphunLamphun, Thailand
    1333.2×
  40. 40Chiang RaiChiang Rai, Thailand
    1313.2×
  41. 41Puerto VarasLos Lagos Region, Chile
    1313.2×
  42. 42Chai NatChai Nat, Thailand
    1303.2×
  43. 43SaraburiSaraburi, Thailand
    1263.0×
  44. 43Roi EtRoi Et, Thailand
    1263.0×
  45. 43Khon KaenKhon Kaen, Thailand
    1263.0×
  46. 46Nakhon PathomNakhon Pathom, Thailand
    1222.9×
  47. 47Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1212.9×
  48. 47PhetchaburiPhetchaburi, Thailand
    1212.9×
  49. 49Nong Bua LamphuNong Bua Lamphu, Thailand
    1202.9×
  50. 50Nakhon RatchasimaNakhon Ratchasima, Thailand
    1202.9×
  51. 51ToméBiobio, Chile
    1192.9×
  52. 52Nong KhaemBangkok, Thailand
    1172.8×
  53. 52La UniónLos Ríos Region, Chile
    1172.8×
  54. 54Nong ChokBangkok, Thailand
    1162.8×
  55. 55Phra PradaengSamut Prakan, Thailand
    1162.8×
  56. 56Bang NaBangkok, Thailand
    1162.8×
  57. 57HyderabadTelangana, India
    1162.8×
  58. 58Ban Samae DamBangkok, Thailand
    1142.7×
  59. 59Khlong Sam WaBangkok, Thailand
    1132.7×
  60. 60Khlong LuangPathum Thani, Thailand
    1132.7×
  61. 61Samut PrakanSamut Prakan, Thailand
    1122.7×
  62. 61BangkokBangkok, Thailand
    1122.7×
  63. 63Nakhon NayokNakhon Nayok, Thailand
    1112.6×
  64. 63NacimientoBiobio, Chile
    1112.6×
  65. 65Mae SotTak, Thailand
    1112.6×
  66. 66KanchanaburiKanchanaburi, Thailand
    1102.6×
  67. 67Hua HinPrachuap Khiri Khan, Thailand
    1092.6×
  68. 68Samut SakhonSamut Sakhon, Thailand
    1092.6×
  69. 69Si Maha PhotPrachin Buri, Thailand
    1072.5×
  70. 70DelhiDelhi, India
    1072.5×
  71. 70WangarattaVictoria, Australia
    1072.5×
  72. 72Mueang NonthaburiNonthaburi, Thailand
    1062.5×
  73. 73HanoiHanoi, Vietnam
    1042.5×
  74. 74Lak SiBangkok, Thailand
    1042.4×
  75. 75Jacobo HunterArequipa, Peru
    1032.4×
  76. 76Puerto AysénAysén, Chile
    1032.4×
  77. 77BaghdadBaghdad, Iraq
    1032.4×
  78. 78Si Sa KetSi Sa Ket, Thailand
    1022.4×
  79. 79Bang KapiBangkok, Thailand
    1022.4×
  80. 80Bang Bo DistrictSamut Prakan, Thailand
    1012.4×
  81. 81Puerto MonttLos Lagos Region, Chile
    992.3×
  82. 82Sai MaiBangkok, Thailand
    982.3×
  83. 83CuranilahueBiobio, Chile
    982.3×
  84. 84Lat KrabangBangkok, Thailand
    962.2×
  85. 85Karachilow-cost sensorsSindh, Pakistan
    932.1×
  86. 86ShulinTaipei, Taiwan
    922.1×
  87. 87BakuBaki, Azerbaijan
    912.1×
  88. 88Ban ChangRayong, Thailand
    912.0×
  89. 89YangonYangon, Myanmar
    892.0×
  90. 89GuangzhouGuangdong, China
    892.0×
  91. 91ZhushanTaiwan, Taiwan
    892.0×
  92. 91RancaguaO'Higgins Region, Chile
    892.0×
  93. 93Ban Talat BuengChon Buri, Thailand
    892.0×
  94. 94ShenyangLiaoning, China
    892.0×
  95. 95TaipeiTaiwan, Taiwan
    881.9×
  96. 96MiaoliTaiwan, Taiwan
    881.9×
  97. 96TemucoAraucania, Chile
    881.9×
  98. 98SalamancaGuanajuato, Mexico
    881.9×
  99. 99YuanlinTaiwan, Taiwan
    871.9×
  100. 100Abujalow-cost sensorsFCT, Nigeria
    871.9×
  101. 101AntananarivoAnalamanga, Madagascar
    871.9×
  102. 102JeddahMecca Region, Saudi Arabia
    861.9×
  103. 102Ban Khlong PrawetBangkok, Thailand
    861.9×
  104. 102Guatemala CityGuatemala, Guatemala
    861.9×
  105. 105AlessandriaPiedmont, Italy
    861.9×
  106. 105TaoyuanTaiwan, Taiwan
    861.9×
  107. 107RayongRayong, Thailand
    861.8×
  108. 107RengoO'Higgins Region, Chile
    861.8×
  109. 107HualpénBiobio, Chile
    861.8×
  110. 110FontanaCalifornia, United States
    851.8×
  111. 111CelayaGuanajuato, Mexico
    851.8×
  112. 111New Taipei CityTaipei, Taiwan
    851.8×
  113. 113SarajevoFederation of B&H, Bosnia and Herzegovina
    851.8×
  114. 114XizhouTaiwan, Taiwan
    851.8×
  115. 115Novi PazarCentral Serbia, Serbia
    841.8×
  116. 116ToufenTaiwan, Taiwan
    841.8×
  117. 116BuziTaiwan, Taiwan
    841.8×
  118. 118ValjevoCentral Serbia, Serbia
    841.8×
  119. 119HsinchuTaiwan, Taiwan
    831.8×
  120. 119HualquiBiobio, Chile
    831.8×
  121. 121ZhudongTaiwan, Taiwan
    831.8×
  122. 121ChanghuaTaiwan, Taiwan
    831.8×
  123. 123SurinSurin, Thailand
    831.7×
  124. 123ErlinTaiwan, Taiwan
    831.7×
  125. 125PhuketPhuket, Thailand
    831.7×
  126. 126NeiliTaiwan, Taiwan
    821.7×
  127. 127Buri RamBuriram, Thailand
    821.7×
  128. 127DaxiTaiwan, Taiwan
    821.7×
  129. 127ValdiviaLos Ríos Region, Chile
    821.7×
  130. 130ErlunTaiwan, Taiwan
    821.7×
  131. 130Puente AltoSantiago Metropolitan, Chile
    821.7×
  132. 132BeigangTaiwan, Taiwan
    821.7×
  133. 132XizhiTaipei, Taiwan
    821.7×
  134. 134TaibaoTaiwan, Taiwan
    811.7×
  135. 135NantouTaiwan, Taiwan
    811.7×
  136. 135ZhubeiTaiwan, Taiwan
    811.7×
  137. 137San CarlosÑuble, Chile
    801.7×
  138. 138DouliuTaiwan, Taiwan
    801.7×
  139. 139SalorTashkent Region, Uzbekistan
    801.6×
  140. 139TaichungTaiwan, Taiwan
    801.6×
  141. 139RabinalBaja Verapaz, Guatemala
    801.6×
  142. 142Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    801.6×
  143. 143ChanthaburiChanthaburi, Thailand
    801.6×
  144. 143La Crescenta-Montroselow-cost sensorsCalifornia, United States
    801.6×
  145. 145Los ÁngelesBiobio, Chile
    791.6×
  146. 145ChillánÑuble, Chile
    791.6×
  147. 147TangjinChungcheongnam-do, South Korea
    791.6×
  148. 148ShanghaiShanghai, China
    791.6×
  149. 149ColomboWestern Province, Sri Lanka
    781.6×
  150. 149SantiagoSantiago Metropolitan, Chile
    781.6×
  151. 151CuricóMaule Region, Chile
    781.6×
  152. 151AricaArica y Parinacota Region, Chile
    781.6×
  153. 153Wan ChaiWan Chai, Hong Kong
    781.6×
  154. 153BurbankCalifornia, United States
    781.6×
  155. 155Hat YaiSongkhla, Thailand
    781.6×
  156. 155SanzhiTaipei, Taiwan
    781.6×
  157. 155TocopillaAntofagasta, Chile
    781.6×
  158. 158PuliTaiwan, Taiwan
    771.6×
  159. 158CoronelBiobio, Chile
    771.6×
  160. 160Chiayi CityTaiwan, Taiwan
    771.5×
  161. 161YongkangTaiwan, Taiwan
    771.5×
  162. 161ShikokuchūōEhime, Japan
    771.5×
  163. 163UžiceCentral Serbia, Serbia
    771.5×
  164. 163TalcahuanoBiobio, Chile
    771.5×
  165. 165XinyingTaiwan, Taiwan
    761.5×
  166. 165Los AngelesCalifornia, United States
    761.5×
  167. 167KigaliKigali, Rwanda
    761.5×
  168. 167TratTrat, Thailand
    761.5×
  169. 167YesanChungcheongnam-do, South Korea
    761.5×
  170. 167AntofagastaAntofagasta, Chile
    761.5×
  171. 171Ulu BedokSingapore
    761.5×
  172. 172FengshanTakao, Taiwan
    751.5×
  173. 172AyaseKanagawa, Japan
    751.5×
  174. 174ĆuprijaCentral Serbia, Serbia
    751.5×
  175. 174Surat ThaniSurat Thani, Thailand
    751.5×
  176. 174SatunSatun, Thailand
    751.5×
  177. 174TakasakiGunma, Japan
    751.5×
  178. 178AstanaAstana, Kazakhstan
    751.5×
  179. 178TainanTaiwan, Taiwan
    751.5×
  180. 180NiihamaEhime, Japan
    741.4×
  181. 181AshgabatAshgabat, Turkmenistan
    741.4×
  182. 182DushanbeDushanbe, Tajikistan
    741.4×
  183. 182KeelungTaiwan, Taiwan
    741.4×
  184. 184RiversideCalifornia, United States
    741.4×
  185. 185GimcheonGyeongsangbuk-do, South Korea
    741.4×
  186. 186TetovoTetovo, North Macedonia
    731.4×
  187. 186JangheungJeollanam-do, South Korea
    731.4×
  188. 188AranyaprathetSa Kaeo, Thailand
    731.4×
  189. 188YilanTaiwan, Taiwan
    731.4×
  190. 188MinamirinkanKanagawa, Japan
    731.4×
  191. 191ChimboteAncash, Peru
    731.4×
  192. 191TalaganteSantiago Metropolitan, Chile
    731.4×
  193. 193SangjuGyeongsangbuk-do, South Korea
    731.4×
  194. 194YeongjuGyeongsangbuk-do, South Korea
    731.4×
  195. 194Agouralow-cost sensorsCalifornia, United States
    731.4×
  196. 196YeojuGyeonggi-do, South Korea
    721.4×
  197. 197IgusaSaitama, Japan
    721.4×
  198. 197VillarricaAraucania, Chile
    721.4×
  199. 197Santa ClaritaCalifornia, United States
    721.4×
  200. 197IrumaSaitama, Japan
    721.4×

Top 200 of 2,402 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 22, 2024, smogrank.com/history/2024-04-22 (accessed 3 Oct 2026).

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