SmogRank / History / May 23, 2024

Most polluted cities on May 23, 2024

2,256 cities ranked by their average PM2.5 over the day; the worst was Santa Anita - Los Ficus, Peru, at 120.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 23, 2024. All episodes.

← Santa Anita - Los Ficus 120.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 23, 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. 1Santa Anita - Los FicusLima region, Peru
    1968.0×
  2. 2Dhakalow-cost sensorsDhaka Division, Bangladesh
    1927.6×
  3. 3N'DjamenaN’Djaména, Chad
    1867.1×
  4. 4ValdiviaLos Ríos Region, Chile
    1846.8×
  5. 5Lahorelow-cost sensorsPunjab, Pakistan
    1755.9×
  6. 6CoyhaiqueAysén, Chile
    1725.7×
  7. 7CuranilahueBiobio, Chile
    1705.5×
  8. 8OsornoLos Lagos Region, Chile
    1695.4×
  9. 9NacimientoBiobio, Chile
    1685.3×
  10. 10Puerto AysénAysén, Chile
    1675.2×
  11. 11BeijingBeijing, China
    1645.0×
  12. 12CairoCairo, Egypt
    1634.8×
  13. 13VillarricaAraucania, Chile
    1624.7×
  14. 14San CarlosÑuble, Chile
    1604.6×
  15. 15La UniónLos Ríos Region, Chile
    1594.5×
  16. 16ChillánÑuble, Chile
    1594.4×
  17. 17Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1584.3×
  18. 18CoronelBiobio, Chile
    1574.3×
  19. 19TalcaMaule Region, Chile
    1544.0×
  20. 20TalcahuanoBiobio, Chile
    1533.9×
  21. 21Guatemala CityGuatemala, Guatemala
    1503.7×
  22. 22CauquenesMaule Region, Chile
    1473.6×
  23. 23DelhiDelhi, India
    1463.6×
  24. 24Puerto VarasLos Lagos Region, Chile
    1383.4×
  25. 25RabinalBaja Verapaz, Guatemala
    1353.3×
  26. 26San Francisco De BorjaLima region, Peru
    1353.3×
  27. 27Los ÁngelesBiobio, Chile
    1353.3×
  28. 28MonterreyNuevo León, Mexico
    1273.1×
  29. 29Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1253.0×
  30. 30HanoiHanoi, Vietnam
    1243.0×
  31. 31Islamabadlow-cost sensorsIslamabad, Pakistan
    1212.9×
  32. 32YesanChungcheongnam-do, South Korea
    1192.9×
  33. 33TemucoAraucania, Chile
    1192.9×
  34. 34ConcepciónBiobio, Chile
    1172.8×
  35. 34LimaLima Province, Peru
    1172.8×
  36. 36CuricóMaule Region, Chile
    1132.7×
  37. 37ChiguayanteBiobio, Chile
    1122.7×
  38. 38BaghdadBaghdad, Iraq
    1112.6×
  39. 39Addis AbabaAddis Ababa, Ethiopia
    1092.6×
  40. 40Live OakTexas, United States
    1082.5×
  41. 41Kathmandulow-cost sensorsBagmati Province, Nepal
    1072.5×
  42. 42ToméBiobio, Chile
    1062.5×
  43. 43MissionTexas, United States
    1062.5×
  44. 44CallaoCallao, Peru
    1032.4×
  45. 45AsanChungcheongnam-do, South Korea
    1032.4×
  46. 46UlsanUlsan, South Korea
    1032.4×
  47. 47ShikokuchūōEhime, Japan
    1012.4×
  48. 48SeonghwanChungcheongnam-do, South Korea
    1002.3×
  49. 49Corpus ChristiTexas, United States
    992.3×
  50. 50SangjuGyeongsangbuk-do, South Korea
    962.2×
  51. 51GuangzhouGuangdong, China
    942.2×
  52. 52UngsangGyeongsangnam-do, South Korea
    942.2×
  53. 52San Pedro de la PazBiobio, Chile
    942.2×
  54. 54YeojuGyeonggi-do, South Korea
    932.1×
  55. 55JungpyongNorth Chungcheong, South Korea
    922.1×
  56. 56BelmopanCayo District, Belize
    912.1×
  57. 57IrapuatoGuanajuato, Mexico
    912.0×
  58. 58Cheongju-siNorth Chungcheong, South Korea
    912.0×
  59. 59PubalGyeonggi-do, South Korea
    902.0×
  60. 60GijangBusan, South Korea
    902.0×
  61. 61ChocopeLa Libertad, Peru
    892.0×
  62. 62JeddahMecca Region, Saudi Arabia
    881.9×
  63. 62TangjinChungcheongnam-do, South Korea
    881.9×
  64. 64Puerto MonttLos Lagos Region, Chile
    881.9×
  65. 65San Luis de la PazGuanajuato, Mexico
    881.9×
  66. 66Chinch'ŏnNorth Chungcheong, South Korea
    881.9×
  67. 67IksanJeollabuk-do, South Korea
    871.9×
  68. 68YeonggwangJeollanam-do, South Korea
    861.9×
  69. 68KimhaeGyeongsangnam-do, South Korea
    861.9×
  70. 70Şabāḩ as SālimMubārak al Kabīr, Kuwait
    861.9×
  71. 70WanjuJeollabuk-do, South Korea
    861.9×
  72. 70HayangGyeongsangbuk-do, South Korea
    861.9×
  73. 70NiihamaEhime, Japan
    861.9×
  74. 70Villa Poeta José Gálvez BarrenecheaLima region, Peru
    861.9×
  75. 75YeongjuGyeongsangbuk-do, South Korea
    861.8×
  76. 75BusanBusan, South Korea
    861.8×
  77. 75OkcheonNorth Chungcheong, South Korea
    861.8×
  78. 75GimcheonGyeongsangbuk-do, South Korea
    861.8×
  79. 75GeojeGyeongsangnam-do, South Korea
    861.8×
  80. 80QuillotaValparaiso, Chile
    851.8×
  81. 81WaegwanGyeongsangbuk-do, South Korea
    851.8×
  82. 81SaijōEhime, Japan
    851.8×
  83. 83KoesanNorth Chungcheong, South Korea
    851.8×
  84. 84SalorTashkent Region, Uzbekistan
    851.8×
  85. 85MatsuyamaEhime, Japan
    851.8×
  86. 86YangsanGyeongsangnam-do, South Korea
    851.8×
  87. 87Silao de la VictoriaGuanajuato, Mexico
    841.8×
  88. 88ChangwonGyeongsangnam-do, South Korea
    841.8×
  89. 88SejongSejong-si, South Korea
    841.8×
  90. 90CelayaGuanajuato, Mexico
    841.8×
  91. 90ChangnyeongGyeongsangnam-do, South Korea
    841.8×
  92. 92KimjeJeollabuk-do, South Korea
    831.8×
  93. 93YeongdongNorth Chungcheong, South Korea
    831.8×
  94. 93KureHiroshima, Japan
    831.8×
  95. 93RancaguaO'Higgins Region, Chile
    831.8×
  96. 96MiryangGyeongsangnam-do, South Korea
    821.7×
  97. 97DamyangJeollanam-do, South Korea
    821.7×
  98. 98GoseongGyeongsangnam-do, South Korea
    821.7×
  99. 98AustinTexas, United States
    821.7×
  100. 100WŏnjuGangwon-do, South Korea
    821.7×
  101. 100GumiGyeongsangbuk-do, South Korea
    821.7×
  102. 100CheonanChungcheongnam-do, South Korea
    821.7×
  103. 100Maebaru-chūōFukuoka, Japan
    821.7×
  104. 104DaejeonDaejeon, South Korea
    821.7×
  105. 104BuanJeollabuk-do, South Korea
    821.7×
  106. 104León de los AldamaGuanajuato, Mexico
    821.7×
  107. 107GongjuChungcheongnam-do, South Korea
    811.7×
  108. 108ChinjuGyeongsangnam-do, South Korea
    811.7×
  109. 108HadongGyeongsangnam-do, South Korea
    811.7×
  110. 110AndongGyeongsangbuk-do, South Korea
    811.7×
  111. 110ObitaNagasaki, Japan
    811.7×
  112. 112PohangGyeongsangbuk-do, South Korea
    811.7×
  113. 113ŌmuraNagasaki, Japan
    811.7×
  114. 113AntofagastaAntofagasta, Chile
    811.7×
  115. 115NamsaJeollabuk-do, South Korea
    801.7×
  116. 115Koch'angJeollabuk-do, South Korea
    801.7×
  117. 117YecheonGyeongsangbuk-do, South Korea
    801.6×
  118. 117ChungjuNorth Chungcheong, South Korea
    801.6×
  119. 119Icheon-siGyeonggi-do, South Korea
    801.6×
  120. 119JeongeupJeollabuk-do, South Korea
    801.6×
  121. 121Karachilow-cost sensorsSindh, Pakistan
    801.6×
  122. 121MungyeongGyeongsangbuk-do, South Korea
    801.6×
  123. 121ŌmutaFukuoka, Japan
    801.6×
  124. 124VilniusVilnius, Lithuania
    791.6×
  125. 124MukdahanMukdahan, Thailand
    791.6×
  126. 124TakeharaHiroshima, Japan
    791.6×
  127. 127MilduraVictoria, Australia
    791.6×
  128. 128GwangyangJeollanam-do, South Korea
    791.6×
  129. 128YŏnmuChungcheongnam-do, South Korea
    791.6×
  130. 130IyoEhime, Japan
    781.6×
  131. 131Gyeongsan-siGyeongsangbuk-do, South Korea
    781.6×
  132. 131FukuokaFukuoka, Japan
    781.6×
  133. 133Yangp'yŏngGyeonggi-do, South Korea
    781.6×
  134. 133JeonjuJeollabuk-do, South Korea
    781.6×
  135. 135ImsilJeollabuk-do, South Korea
    781.6×
  136. 135NaesŏGyeongsangnam-do, South Korea
    781.6×
  137. 135San AntonioTexas, United States
    781.6×
  138. 138HongseongChungcheongnam-do, South Korea
    781.6×
  139. 138TalaganteSantiago Metropolitan, Chile
    781.6×
  140. 140GwangjuGwangju, South Korea
    771.5×
  141. 140IkedachōTokushima, Japan
    771.5×
  142. 142HwasunJeollanam-do, South Korea
    771.5×
  143. 142TogitsuNagasaki, Japan
    771.5×
  144. 142GuanajuatoGuanajuato, Mexico
    771.5×
  145. 145DushanbeDushanbe, Tajikistan
    771.5×
  146. 145PyeongtaekGyeonggi-do, South Korea
    771.5×
  147. 145NonsanChungcheongnam-do, South Korea
    771.5×
  148. 148TaibaoTaiwan, Taiwan
    771.5×
  149. 148YeonilGyeongsangbuk-do, South Korea
    771.5×
  150. 148HwawŏnDaegu, South Korea
    771.5×
  151. 151BeigangTaiwan, Taiwan
    761.5×
  152. 151MokpoJeollanam-do, South Korea
    761.5×
  153. 153AguascalientesAguascalientes, Mexico
    761.5×
  154. 153BoseongJeollanam-do, South Korea
    761.5×
  155. 155DaeguDaegu, South Korea
    761.5×
  156. 156NanNan, Thailand
    761.5×
  157. 156NajuJeollanam-do, South Korea
    761.5×
  158. 156IsahayaNagasaki, Japan
    761.5×
  159. 156HiroshimaHiroshima, Japan
    761.5×
  160. 156YeosuJeollanam-do, South Korea
    761.5×
  161. 156HigashihiroshimaHiroshima, Japan
    761.5×
  162. 162MumbaiMaharashtra, India
    761.5×
  163. 162ErlunTaiwan, Taiwan
    761.5×
  164. 162JangseongJeollanam-do, South Korea
    761.5×
  165. 165IwakuniYamaguchi, Japan
    751.5×
  166. 166ŌtakeHiroshima, Japan
    751.5×
  167. 166Imarichō-kōSaga, Japan
    751.5×
  168. 168MiharaHiroshima, Japan
    751.5×
  169. 168ImabariEhime, Japan
    751.5×
  170. 168San MarcosTexas, United States
    751.5×
  171. 171KinzanChungcheongnam-do, South Korea
    751.5×
  172. 172EisenGyeongsangbuk-do, South Korea
    741.4×
  173. 173JangheungJeollanam-do, South Korea
    741.4×
  174. 173SaseboNagasaki, Japan
    741.4×
  175. 175OsanGyeonggi-do, South Korea
    741.4×
  176. 175ChimboteAncash, Peru
    741.4×
  177. 175SantiagoSantiago Metropolitan, Chile
    741.4×
  178. 175San Miguel de AllendeGuanajuato, Mexico
    741.4×
  179. 179SuncheonJeollanam-do, South Korea
    741.4×
  180. 180Hongch’ŏnGangwon-do, South Korea
    741.4×
  181. 180Abujalow-cost sensorsFCT, Nigeria
    741.4×
  182. 182YeongamJeollanam-do, South Korea
    741.4×
  183. 183HwadoGyeonggi-do, South Korea
    731.4×
  184. 184HaenamJeollanam-do, South Korea
    731.4×
  185. 184TongyeongGyeongsangnam-do, South Korea
    731.4×
  186. 184ChangsuJeollabuk-do, South Korea
    731.4×
  187. 187MasanGwangju, South Korea
    731.4×
  188. 187KunwiGyeongsangbuk-do, South Korea
    731.4×
  189. 187GainesvilleGeorgia, United States
    731.4×
  190. 190Tanushimarumachi-toyokiFukuoka, Japan
    731.4×
  191. 191Hondomachi-hondoKumamoto, Japan
    721.4×
  192. 191TocopillaAntofagasta, Chile
    721.4×
  193. 193BoryeongChungcheongnam-do, South Korea
    721.4×
  194. 193KurumeFukuoka, Japan
    721.4×
  195. 193HoustonTexas, United States
    721.4×
  196. 196TainanTaiwan, Taiwan
    721.4×
  197. 196HigashigōSaga, Japan
    721.4×
  198. 198BeolgyoJeollanam-do, South Korea
    721.3×
  199. 198YanaiYamaguchi, Japan
    721.3×
  200. 198KasaokaOkayama, Japan
    721.3×

Top 200 of 2,256 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, May 23, 2024, smogrank.com/history/2024-05-23 (accessed 3 Oct 2026).

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