SmogRank / History / April 28, 2024

Most polluted cities on April 28, 2024

2,309 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 119.0 µg/m³. Each city's own local calendar day.

← N'Djamena 119.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for April 28, 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
    1967.9×
  2. 2BaghdadBaghdad, Iraq
    1776.2×
  3. 3PhayaoPhayao, Thailand
    1745.9×
  4. 4Kathmandulow-cost sensorsBagmati Province, Nepal
    1715.6×
  5. 5NanNan, Thailand
    1705.5×
  6. 6LampangLampang, Thailand
    1624.8×
  7. 7Dhakalow-cost sensorsDhaka Division, Bangladesh
    1614.7×
  8. 8Ubon RatchathaniUbon Ratchathani, Thailand
    1604.6×
  9. 9Santa Anita - Los FicusLima region, Peru
    1604.6×
  10. 10Chiang MaiChiang Mai, Thailand
    1604.5×
  11. 11NacimientoBiobio, Chile
    1604.5×
  12. 12HualpénBiobio, Chile
    1594.4×
  13. 13Mae SaiChiang Rai, Thailand
    1574.3×
  14. 14UttaraditUttaradit, Thailand
    1574.3×
  15. 15Los ÁngelesBiobio, Chile
    1554.1×
  16. 16Vientianelow-cost sensorsVientiane Prefecture, Laos
    1554.1×
  17. 17HanoiHanoi, Vietnam
    1533.9×
  18. 18KalasinKalasin, Thailand
    1533.9×
  19. 19LamphunLamphun, Thailand
    1533.8×
  20. 20Chiang RaiChiang Rai, Thailand
    1523.8×
  21. 21PhraePhrae, Thailand
    1523.8×
  22. 22Lahorelow-cost sensorsPunjab, Pakistan
    1503.7×
  23. 23SukhothaiSukhothai, Thailand
    1423.5×
  24. 24MukdahanMukdahan, Thailand
    1403.4×
  25. 25RengoO'Higgins Region, Chile
    1403.4×
  26. 26Kamphaeng PhetKamphaeng Phet, Thailand
    1393.4×
  27. 27Mae SotTak, Thailand
    1383.4×
  28. 28HyderabadTelangana, India
    1373.4×
  29. 29ChillánÑuble, Chile
    1363.3×
  30. 30DelhiDelhi, India
    1333.2×
  31. 31LoeiLoei, Thailand
    1333.2×
  32. 32TalcahuanoBiobio, Chile
    1313.2×
  33. 33Ciudad JuárezChihuahua, Mexico
    1253.0×
  34. 34San CarlosÑuble, Chile
    1243.0×
  35. 35Sakon NakhonSakon Nakhon, Thailand
    1222.9×
  36. 36KolkataWest Bengal, India
    1212.9×
  37. 37Udon ThaniUdon Thani, Thailand
    1212.9×
  38. 38PhetchabunPhetchabun, Thailand
    1142.7×
  39. 39JakartaJakarta, Indonesia
    1142.7×
  40. 40Şabāḩ as SālimMubārak al Kabīr, Kuwait
    1122.7×
  41. 40MumbaiMaharashtra, India
    1122.7×
  42. 42YasothonYasothon, Thailand
    1122.7×
  43. 42HualquiBiobio, Chile
    1122.7×
  44. 44PhichitPhichit, Thailand
    1122.7×
  45. 45Nong Bua LamphuNong Bua Lamphu, Thailand
    1092.6×
  46. 46TalaganteSantiago Metropolitan, Chile
    1052.5×
  47. 47Amnat CharoenAmnat Charoen, Thailand
    1052.5×
  48. 48YangonYangon, Myanmar
    1052.5×
  49. 49ChaiyaphumChaiyaphum, Thailand
    1032.4×
  50. 50VillarricaAraucania, Chile
    1022.4×
  51. 51Khon KaenKhon Kaen, Thailand
    992.3×
  52. 52CuranilahueBiobio, Chile
    972.2×
  53. 53UlsanUlsan, South Korea
    962.2×
  54. 54KanchanaburiKanchanaburi, Thailand
    952.2×
  55. 55Roi EtRoi Et, Thailand
    952.2×
  56. 56Puente AltoSantiago Metropolitan, Chile
    942.1×
  57. 57MissionTexas, United States
    932.1×
  58. 58PohangGyeongsangbuk-do, South Korea
    932.1×
  59. 59Chai NatChai Nat, Thailand
    922.1×
  60. 60Puerto AysénAysén, Chile
    922.1×
  61. 61Nakhon SawanNakhon Sawan, Thailand
    912.1×
  62. 61LimaLima Province, Peru
    912.1×
  63. 63CoyhaiqueAysén, Chile
    912.0×
  64. 64CauquenesMaule Region, Chile
    902.0×
  65. 65SantiagoSantiago Metropolitan, Chile
    902.0×
  66. 66HayangGyeongsangbuk-do, South Korea
    902.0×
  67. 67ConcepciónBiobio, Chile
    902.0×
  68. 68QuillotaValparaiso, Chile
    892.0×
  69. 68OsornoLos Lagos Region, Chile
    892.0×
  70. 70ChinjuGyeongsangnam-do, South Korea
    881.9×
  71. 71RancaguaO'Higgins Region, Chile
    881.9×
  72. 72QuinteroValparaiso, Chile
    881.9×
  73. 73RatchaburiRatchaburi, Thailand
    881.9×
  74. 73Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    881.9×
  75. 73ShikokuchūōEhime, Japan
    881.9×
  76. 76Sing BuriSing Buri, Thailand
    871.9×
  77. 76AlessandriaPiedmont, Italy
    871.9×
  78. 78Nakhon RatchasimaNakhon Ratchasima, Thailand
    871.9×
  79. 78NaesŏGyeongsangnam-do, South Korea
    871.9×
  80. 80WaegwanGyeongsangbuk-do, South Korea
    871.9×
  81. 80Gyeongsan-siGyeongsangbuk-do, South Korea
    871.9×
  82. 82ToméBiobio, Chile
    871.9×
  83. 82EdinburgTexas, United States
    871.9×
  84. 84CairoCairo, Egypt
    861.9×
  85. 85EisenGyeongsangbuk-do, South Korea
    851.8×
  86. 86AstanaAstana, Kazakhstan
    851.8×
  87. 87YeonilGyeongsangbuk-do, South Korea
    851.8×
  88. 87Guatemala CityGuatemala, Guatemala
    851.8×
  89. 89ChiguayanteBiobio, Chile
    851.8×
  90. 90GijangBusan, South Korea
    841.8×
  91. 90NakanojōGunma, Japan
    841.8×
  92. 92Puerto MonttLos Lagos Region, Chile
    841.8×
  93. 93MiryangGyeongsangnam-do, South Korea
    841.8×
  94. 93RabinalBaja Verapaz, Guatemala
    841.8×
  95. 95ChangwonGyeongsangnam-do, South Korea
    831.8×
  96. 96Lop BuriLopburi, Thailand
    821.7×
  97. 96Kan’onjichōKagawa, Japan
    821.7×
  98. 98TalcaMaule Region, Chile
    821.7×
  99. 98ChangnyeongGyeongsangnam-do, South Korea
    821.7×
  100. 100KimhaeGyeongsangnam-do, South Korea
    821.7×
  101. 101TangjinChungcheongnam-do, South Korea
    821.7×
  102. 102Puerto VarasLos Lagos Region, Chile
    821.7×
  103. 103YeojuGyeonggi-do, South Korea
    821.7×
  104. 103BusanBusan, South Korea
    821.7×
  105. 103La UniónLos Ríos Region, Chile
    821.7×
  106. 103CuricóMaule Region, Chile
    821.7×
  107. 103Villa Poeta José Gálvez BarrenecheaLima region, Peru
    821.7×
  108. 103CelayaGuanajuato, Mexico
    821.7×
  109. 109PhuketPhuket, Thailand
    811.7×
  110. 110Hua HinPrachuap Khiri Khan, Thailand
    811.7×
  111. 110ShibataNiigata, Japan
    811.7×
  112. 112TemucoAraucania, Chile
    811.7×
  113. 113DaeguDaegu, South Korea
    811.7×
  114. 114Donghae CityGangwon-do, South Korea
    801.7×
  115. 115HwawŏnDaegu, South Korea
    801.7×
  116. 116KasaokaOkayama, Japan
    801.6×
  117. 116SarajevoFederation of B&H, Bosnia and Herzegovina
    801.6×
  118. 118Suphan BuriSuphan Buri, Thailand
    801.6×
  119. 118CopiapóAtacama, Chile
    801.6×
  120. 118San Pedro de la PazBiobio, Chile
    801.6×
  121. 121GoseongGyeongsangnam-do, South Korea
    801.6×
  122. 121SaijōEhime, Japan
    801.6×
  123. 123SokchoGangwon-do, South Korea
    791.6×
  124. 123Abujalow-cost sensorsFCT, Nigeria
    791.6×
  125. 125AndongGyeongsangbuk-do, South Korea
    791.6×
  126. 126ShanghaiShanghai, China
    781.6×
  127. 126Jacobo HunterArequipa, Peru
    781.6×
  128. 128GwangmyeongGyeonggi-do, South Korea
    781.6×
  129. 129TongyeongGyeongsangnam-do, South Korea
    771.5×
  130. 129HadongGyeongsangnam-do, South Korea
    771.5×
  131. 131SangjuGyeongsangbuk-do, South Korea
    771.5×
  132. 132YeongjuGyeongsangbuk-do, South Korea
    771.5×
  133. 132GumiGyeongsangbuk-do, South Korea
    771.5×
  134. 134Nakhon PathomNakhon Pathom, Thailand
    771.5×
  135. 134GyeongjuGyeongsangbuk-do, South Korea
    771.5×
  136. 134IncheonIncheon, South Korea
    771.5×
  137. 137YangsanGyeongsangnam-do, South Korea
    761.5×
  138. 138Addis AbabaAddis Ababa, Ethiopia
    761.5×
  139. 138Bucheon-siGyeonggi-do, South Korea
    761.5×
  140. 138CoronelBiobio, Chile
    761.5×
  141. 141GwangyangJeollanam-do, South Korea
    761.5×
  142. 141ŻywiecSilesia, Poland
    761.5×
  143. 141BelmopanCayo District, Belize
    761.5×
  144. 144PhetchaburiPhetchaburi, Thailand
    761.5×
  145. 144SinhyeonGyeongsangnam-do, South Korea
    761.5×
  146. 144CoquimboCoquimbo Region, Chile
    761.5×
  147. 147NiihamaEhime, Japan
    751.5×
  148. 148UngsangGyeongsangnam-do, South Korea
    751.5×
  149. 148WangarattaVictoria, Australia
    751.5×
  150. 150Nong KhaemBangkok, Thailand
    751.5×
  151. 150TsurusakiOita, Japan
    751.5×
  152. 150GeojeGyeongsangnam-do, South Korea
    751.5×
  153. 153Cheongsong gunGyeongsangbuk-do, South Korea
    741.4×
  154. 154KwangyangJeollanam-do, South Korea
    741.4×
  155. 154MarugameKagawa, Japan
    741.4×
  156. 154ConcónValparaiso, Chile
    741.4×
  157. 154Corpus ChristiTexas, United States
    741.4×
  158. 158YecheonGyeongsangbuk-do, South Korea
    741.4×
  159. 158Goyang-siGyeonggi-do, South Korea
    741.4×
  160. 160FukuyamaHiroshima, Japan
    741.4×
  161. 160GdańskPomerania, Poland
    741.4×
  162. 162BakuBaki, Azerbaijan
    741.4×
  163. 162Gimpo-siGyeonggi-do, South Korea
    741.4×
  164. 164WŏnjuGangwon-do, South Korea
    741.4×
  165. 164YamagataYamagata, Japan
    741.4×
  166. 166SaraburiSaraburi, Thailand
    731.4×
  167. 166SuncheonJeollanam-do, South Korea
    731.4×
  168. 166TsuruokaYamagata, Japan
    731.4×
  169. 166NakatsuOita, Japan
    731.4×
  170. 170SeoulSeoul, South Korea
    731.4×
  171. 170GimcheonGyeongsangbuk-do, South Korea
    731.4×
  172. 172JeddahMecca Region, Saudi Arabia
    731.4×
  173. 172ZentsujichóKagawa, Japan
    731.4×
  174. 172Khlong Sam WaBangkok, Thailand
    731.4×
  175. 175Si Maha PhotPrachin Buri, Thailand
    721.4×
  176. 175Bang NaBangkok, Thailand
    721.4×
  177. 177Nakhon NayokNakhon Nayok, Thailand
    721.4×
  178. 177MungyeongGyeongsangbuk-do, South Korea
    721.4×
  179. 179Khlong LuangPathum Thani, Thailand
    721.4×
  180. 179ChocopeLa Libertad, Peru
    721.4×
  181. 181RanongRanong province, Thailand
    721.4×
  182. 181Kameda-honchōNiigata, Japan
    721.4×
  183. 181Viña del MarValparaiso, Chile
    721.4×
  184. 184Si Sa KetSi Sa Ket, Thailand
    711.3×
  185. 184Phra PradaengSamut Prakan, Thailand
    711.3×
  186. 184HwadoGyeonggi-do, South Korea
    711.3×
  187. 184AyaseKanagawa, Japan
    711.3×
  188. 188TakasakiGunma, Japan
    711.3×
  189. 188IgusaSaitama, Japan
    711.3×
  190. 188TocopillaAntofagasta, Chile
    711.3×
  191. 188AntofagastaAntofagasta, Chile
    711.3×
  192. 192SatunSatun, Thailand
    711.3×
  193. 193TakeharaHiroshima, Japan
    711.3×
  194. 194La SerenaCoquimbo Region, Chile
    711.3×
  195. 195BeijingBeijing, China
    701.3×
  196. 195SakataYamagata, Japan
    701.3×
  197. 195NyūzenToyama, Japan
    701.3×
  198. 195Kodamachō-kodamaminamiSaitama, Japan
    701.3×
  199. 199YesanChungcheongnam-do, South Korea
    701.3×
  200. 200ŁukówLublin, Poland
    701.3×

Top 200 of 2,309 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 28, 2024, smogrank.com/history/2024-04-28 (accessed 3 Oct 2026).

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