SmogRank / History / April 29, 2023

Most polluted cities on April 29, 2023

1,474 cities ranked by their average PM2.5 over the day; the worst was Belmopan, Belize, at 87.1 µg/m³. Each city's own local calendar day.

← Belmopan 87.1 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for April 29, 2023, 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. 1BelmopanCayo District, Belize
    1735.8×
  2. 2BamakoBamako, Mali
    1705.5×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    1705.5×
  4. 4Kathmandulow-cost sensorsBagmati Province, Nepal
    1705.5×
  5. 5Ubon RatchathaniUbon Ratchathani, Thailand
    1665.2×
  6. 6DelhiDelhi, India
    1604.5×
  7. 7Kampalalow-cost sensorsCentral Region, Uganda
    1574.2×
  8. 8Poza Rica de HidalgoVeracruz, Mexico
    1564.2×
  9. 9Ban HouakhouaBokeo, Laos
    1533.9×
  10. 10NanNan, Thailand
    1533.9×
  11. 11Ga-RankuwaNorth West, South Africa
    1493.7×
  12. 12Lahorelow-cost sensorsPunjab, Pakistan
    1393.4×
  13. 13ShanghaiShanghai, China
    1353.3×
  14. 14Chiang RaiChiang Rai, Thailand
    1343.3×
  15. 15Tha BoNong Khai, Thailand
    1313.2×
  16. 16SukhothaiSukhothai, Thailand
    1313.2×
  17. 16Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1313.2×
  18. 18Mae SaiChiang Rai, Thailand
    1303.2×
  19. 19Chiang MaiChiang Mai, Thailand
    1283.1×
  20. 20UttaraditUttaradit, Thailand
    1273.1×
  21. 21Novi PazarCentral Serbia, Serbia
    1243.0×
  22. 22PhayaoPhayao, Thailand
    1222.9×
  23. 23CelayaGuanajuato, Mexico
    1212.9×
  24. 24LampangLampang, Thailand
    1202.9×
  25. 24CoyhaiqueAysén, Chile
    1202.9×
  26. 26PhraePhrae, Thailand
    1202.9×
  27. 27Suphan BuriSuphan Buri, Thailand
    1192.9×
  28. 28Sing BuriSing Buri, Thailand
    1182.8×
  29. 29KalasinKalasin, Thailand
    1162.8×
  30. 30MukdahanMukdahan, Thailand
    1142.7×
  31. 31PhetchabunPhetchabun, Thailand
    1122.7×
  32. 32Chai NatChai Nat, Thailand
    1112.6×
  33. 33CholulaPuebla, Mexico
    1112.6×
  34. 34LoeiLoei, Thailand
    1092.6×
  35. 35PristinaPristina, Kosovo
    1092.6×
  36. 35San Mateo AtencoMéxico, Mexico
    1092.6×
  37. 37Si Sa KetSi Sa Ket, Thailand
    1082.6×
  38. 38Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1082.5×
  39. 39BloemfonteinFree State, South Africa
    1072.5×
  40. 40LamphunLamphun, Thailand
    1072.5×
  41. 41TolucaMéxico, Mexico
    1072.5×
  42. 42PakxanBolikhamsai, Laos
    1062.5×
  43. 43Mae SotTak, Thailand
    1062.5×
  44. 44Lop BuriLopburi, Thailand
    1042.5×
  45. 45Bang NaBangkok, Thailand
    1032.4×
  46. 46Islamabadlow-cost sensorsIslamabad, Pakistan
    1032.4×
  47. 47PhichitPhichit, Thailand
    1032.4×
  48. 48Nakhon SawanNakhon Sawan, Thailand
    1012.4×
  49. 48Pachuca de SotoHidalgo, Mexico
    1012.4×
  50. 50ValjevoCentral Serbia, Serbia
    1012.4×
  51. 50Puerto AysénAysén, Chile
    1012.4×
  52. 52Kamphaeng PhetKamphaeng Phet, Thailand
    992.3×
  53. 53Khlong Sam WaBangkok, Thailand
    992.3×
  54. 54Addis AbabaAddis Ababa, Ethiopia
    982.3×
  55. 54Roi EtRoi Et, Thailand
    982.3×
  56. 56Udon ThaniUdon Thani, Thailand
    982.3×
  57. 57XonacatlánMéxico, Mexico
    982.3×
  58. 58GuadalajaraJalisco, Mexico
    972.3×
  59. 59YangonYangon, Myanmar
    962.2×
  60. 60Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    962.2×
  61. 61San Francisco TlalcilalcalpanMéxico, Mexico
    952.2×
  62. 61MexicaliBaja California, Mexico
    952.2×
  63. 63KigaliKigali, Rwanda
    952.2×
  64. 63ZapopanJalisco, Mexico
    952.2×
  65. 65ThembisaGauteng, South Africa
    942.2×
  66. 65Si Maha PhotPrachin Buri, Thailand
    942.2×
  67. 67PirotCentral Serbia, Serbia
    942.1×
  68. 68Khan Na YaoBangkok, Thailand
    942.1×
  69. 69ChaiyaphumChaiyaphum, Thailand
    932.1×
  70. 70Nong ChokBangkok, Thailand
    932.1×
  71. 71RabinalBaja Verapaz, Guatemala
    932.1×
  72. 71Guatemala CityGuatemala, Guatemala
    932.1×
  73. 73BaghdadBaghdad, Iraq
    932.1×
  74. 74Bueng KumBangkok, Thailand
    922.1×
  75. 75Khlong LuangPathum Thani, Thailand
    922.1×
  76. 76Nong Bua LamphuNong Bua Lamphu, Thailand
    922.1×
  77. 77Nong KhaemBangkok, Thailand
    912.0×
  78. 78Sakon NakhonSakon Nakhon, Thailand
    902.0×
  79. 79Puente AltoSantiago Metropolitan, Chile
    902.0×
  80. 80Saphan SungBangkok, Thailand
    892.0×
  81. 81Ban Samae DamBangkok, Thailand
    881.9×
  82. 82Nakhon RatchasimaNakhon Ratchasima, Thailand
    881.9×
  83. 82Lak SiBangkok, Thailand
    881.9×
  84. 84Lat KrabangBangkok, Thailand
    871.9×
  85. 85Wan ChaiWan Chai, Hong Kong
    871.9×
  86. 86SalamancaGuanajuato, Mexico
    861.9×
  87. 87San Juan del RíoQuerétaro, Mexico
    861.8×
  88. 88SantiagoSantiago Metropolitan, Chile
    851.8×
  89. 89Sai MaiBangkok, Thailand
    851.8×
  90. 90Karachilow-cost sensorsSindh, Pakistan
    841.8×
  91. 91Bang KapiBangkok, Thailand
    841.8×
  92. 91Ciudad NezahualcoyotlMéxico, Mexico
    841.8×
  93. 93KhartoumKhartoum, Sudan
    841.8×
  94. 94RengoO'Higgins Region, Chile
    831.8×
  95. 95RatchaburiRatchaburi, Thailand
    831.8×
  96. 95Naucalpan de JuárezMéxico, Mexico
    831.8×
  97. 95CuranilahueBiobio, Chile
    831.8×
  98. 98Mexico CityMexico City, Mexico
    831.7×
  99. 99BangkokBangkok, Thailand
    821.7×
  100. 99Puerto VarasLos Lagos Region, Chile
    821.7×
  101. 101LazarevacCentral Serbia, Serbia
    821.7×
  102. 101Ban ChangRayong, Thailand
    821.7×
  103. 103RancaguaO'Higgins Region, Chile
    811.7×
  104. 104HanoiHanoi, Vietnam
    811.7×
  105. 104Samut PrakanSamut Prakan, Thailand
    811.7×
  106. 104AranyaprathetSa Kaeo, Thailand
    811.7×
  107. 107SaraburiSaraburi, Thailand
    811.7×
  108. 107CuernavacaMorelos, Mexico
    811.7×
  109. 109KragujevacCentral Serbia, Serbia
    811.7×
  110. 109ČačakCentral Serbia, Serbia
    811.7×
  111. 111BogotáBogota D.C., Colombia
    811.7×
  112. 111Santiago de QuerétaroQuerétaro, Mexico
    811.7×
  113. 113Almatylow-cost sensorsAlmaty, Kazakhstan
    801.6×
  114. 113AntofagastaAntofagasta, Chile
    801.6×
  115. 115AlessandriaPiedmont, Italy
    801.6×
  116. 116Mueang NonthaburiNonthaburi, Thailand
    791.6×
  117. 117DushanbeDushanbe, Tajikistan
    791.6×
  118. 117RayongRayong, Thailand
    791.6×
  119. 117Silao de la VictoriaGuanajuato, Mexico
    791.6×
  120. 120TlaxcalaTlaxcala, Mexico
    791.6×
  121. 120TalaganteSantiago Metropolitan, Chile
    791.6×
  122. 122Bang Bo DistrictSamut Prakan, Thailand
    791.6×
  123. 123Ban Khlong PrawetBangkok, Thailand
    791.6×
  124. 124SmederevoCentral Serbia, Serbia
    781.6×
  125. 125GuangzhouGuangdong, China
    781.6×
  126. 126Puerto MonttLos Lagos Region, Chile
    781.6×
  127. 127Hat YaiSongkhla, Thailand
    771.5×
  128. 128NišCentral Serbia, Serbia
    771.5×
  129. 128Surat ThaniSurat Thani, Thailand
    771.5×
  130. 128Laem ChabangChon Buri, Thailand
    771.5×
  131. 131AricaArica y Parinacota Region, Chile
    771.5×
  132. 132Ban Talat BuengChon Buri, Thailand
    771.5×
  133. 133YalaYala, Thailand
    761.5×
  134. 133KortrijkFlanders, Belgium
    761.5×
  135. 135CopiapóAtacama, Chile
    761.5×
  136. 136Hua HinPrachuap Khiri Khan, Thailand
    761.5×
  137. 136CoquimboCoquimbo Region, Chile
    761.5×
  138. 138JohannesburgGauteng, South Africa
    761.5×
  139. 138Buri RamBuriram, Thailand
    761.5×
  140. 138RoubaixHauts-de-France, France
    761.5×
  141. 138ToruńKujawsko-Pomorskie, Poland
    761.5×
  142. 142La UniónLos Ríos Region, Chile
    751.5×
  143. 142GlendoraCalifornia, United States
    751.5×
  144. 144IrapuatoGuanajuato, Mexico
    751.5×
  145. 144AbasoloGuanajuato, Mexico
    751.5×
  146. 146Samut SakhonSamut Sakhon, Thailand
    751.5×
  147. 146Phra PradaengSamut Prakan, Thailand
    751.5×
  148. 146PueblaPuebla, Mexico
    751.5×
  149. 146Los AngelesCalifornia, United States
    751.5×
  150. 150Nakhon PathomNakhon Pathom, Thailand
    751.5×
  151. 151Mong KokYau Tsim Mong District, Hong Kong
    741.4×
  152. 151MenenFlanders, Belgium
    741.4×
  153. 153GdyniaPomerania, Poland
    741.4×
  154. 154MonsWallonia, Belgium
    741.4×
  155. 154EvergemFlanders, Belgium
    741.4×
  156. 154SolingenNorth Rhine-Westphalia, Germany
    741.4×
  157. 154SzczecinWest Pomerania, Poland
    741.4×
  158. 158ĆuprijaCentral Serbia, Serbia
    741.4×
  159. 159Sau Mau PingKwun Tong District, Hong Kong
    741.4×
  160. 159OsornoLos Lagos Region, Chile
    741.4×
  161. 161IzegemFlanders, Belgium
    741.4×
  162. 161WłocławekKujawsko-Pomorskie, Poland
    741.4×
  163. 163Lagoslow-cost sensorsLagos, Nigeria
    731.4×
  164. 163QuillotaValparaiso, Chile
    731.4×
  165. 163Ciudad JuárezChihuahua, Mexico
    731.4×
  166. 166BelfastNorthern Ireland, United Kingdom
    731.4×
  167. 166KölnNorth Rhine-Westphalia, Germany
    731.4×
  168. 168TrnavaTrnava Region, Slovakia
    731.4×
  169. 169ShenyangLiaoning, China
    731.4×
  170. 169SenicaTrnava Region, Slovakia
    731.4×
  171. 169KrakówLesser Poland, Poland
    731.4×
  172. 169ValdiviaLos Ríos Region, Chile
    731.4×
  173. 173DüsseldorfNorth Rhine-Westphalia, Germany
    721.4×
  174. 174ChanthaburiChanthaburi, Thailand
    721.4×
  175. 175TournaiWallonia, Belgium
    721.4×
  176. 175HualpénBiobio, Chile
    721.4×
  177. 177PhuketPhuket, Thailand
    721.3×
  178. 178RoeselareFlanders, Belgium
    711.3×
  179. 179BonnNorth Rhine-Westphalia, Germany
    711.3×
  180. 179San Luis de la PazGuanajuato, Mexico
    711.3×
  181. 179León de los AldamaGuanajuato, Mexico
    711.3×
  182. 179Lomitalow-cost sensorsCalifornia, United States
    711.3×
  183. 183BéthuneHauts-de-France, France
    711.3×
  184. 184BergheimNorth Rhine-Westphalia, Germany
    711.3×
  185. 185NacimientoBiobio, Chile
    711.3×
  186. 186TokozaGauteng, South Africa
    711.3×
  187. 187MiddelburgMpumalanga, South Africa
    701.3×
  188. 187KoblenzRheinland-Pfalz, Germany
    701.3×
  189. 189PrešovPrešov Region, Slovakia
    701.3×
  190. 190Vranov nad TopľouPrešov Region, Slovakia
    701.3×
  191. 190AarschotFlanders, Belgium
    701.3×
  192. 192PoznańGreater Poland, Poland
    701.3×
  193. 192San JoséSan José, Costa Rica
    701.3×
  194. 192CoronelBiobio, Chile
    701.3×
  195. 192Jurupa ValleyCalifornia, United States
    701.3×
  196. 196San Miguel de AllendeGuanajuato, Mexico
    701.3×
  197. 197GdańskPomerania, Poland
    691.3×
  198. 197BurgosCastille and León, Spain
    691.3×
  199. 197Carsonlow-cost sensorsCalifornia, United States
    691.3×
  200. 200AcharnésAttica, Greece
    691.3×

Top 200 of 1,474 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

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SmogRank, most polluted cities, PM2.5, April 29, 2023, smogrank.com/history/2023-04-29 (accessed 2 Oct 2026).

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