SmogRank / History / May 26, 2025

Most polluted cities on May 26, 2025

2,439 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 86.2 µg/m³. Each city's own local calendar day.

← Coyhaique 86.2 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for May 26, 2025, 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
    1735.7×
  2. 2DushanbeDushanbe, Tajikistan
    1544.0×
  3. 3Santa Anita - Los FicusLima region, Peru
    1403.4×
  4. 4OsornoLos Lagos Region, Chile
    1373.3×
  5. 5ManamaManama, Bahrain
    1353.3×
  6. 6KigaliKigali, Rwanda
    1333.2×
  7. 7SalamancaCastille and León, Spain
    1313.2×
  8. 8Puerto AysénAysén, Chile
    1253.0×
  9. 9DelhiDelhi, India
    1202.9×
  10. 10Dubailow-cost sensorsDubai, United Arab Emirates
    1132.7×
  11. 11RengoO'Higgins Region, Chile
    1132.7×
  12. 12Puerto MonttLos Lagos Region, Chile
    1122.7×
  13. 13JakartaJakarta, Indonesia
    1102.6×
  14. 14NacimientoBiobio, Chile
    1072.5×
  15. 15La UniónLos Ríos Region, Chile
    1042.4×
  16. 16GuangzhouGuangdong, China
    1032.4×
  17. 17AguascalientesAguascalientes, Mexico
    1032.4×
  18. 18Ban Talat BuengChon Buri, Thailand
    1002.4×
  19. 19CuranilahueBiobio, Chile
    992.3×
  20. 20Islamabadlow-cost sensorsIslamabad, Pakistan
    962.2×
  21. 21ValdiviaLos Ríos Region, Chile
    952.2×
  22. 22TocopillaAntofagasta, Chile
    942.2×
  23. 23TalaganteSantiago Metropolitan, Chile
    922.1×
  24. 24SantiagoSantiago Metropolitan, Chile
    912.0×
  25. 25ShenyangLiaoning, China
    912.0×
  26. 26Goyang-siGyeonggi-do, South Korea
    902.0×
  27. 27VillarricaAraucania, Chile
    902.0×
  28. 28Hacienda Santa FeJalisco, Mexico
    902.0×
  29. 29TlaquepaqueJalisco, Mexico
    892.0×
  30. 30Gimpo-siGyeonggi-do, South Korea
    881.9×
  31. 31RancaguaO'Higgins Region, Chile
    881.9×
  32. 32Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    881.9×
  33. 33JinchengFukien, Taiwan
    871.9×
  34. 34La SerenaCoquimbo Region, Chile
    871.9×
  35. 35Istanbullow-cost sensorsIstanbul, Turkey
    871.9×
  36. 36Puente AltoSantiago Metropolitan, Chile
    861.9×
  37. 36León de los AldamaGuanajuato, Mexico
    861.9×
  38. 38SeonghwanChungcheongnam-do, South Korea
    861.9×
  39. 38LinaresMaule Region, Chile
    861.9×
  40. 38AntofagastaAntofagasta, Chile
    861.9×
  41. 41Ansan-siGyeonggi-do, South Korea
    861.8×
  42. 41CholulaPuebla, Mexico
    861.8×
  43. 43IncheonIncheon, South Korea
    851.8×
  44. 44AricaArica y Parinacota Region, Chile
    851.8×
  45. 45HualquiBiobio, Chile
    851.8×
  46. 46CuricóMaule Region, Chile
    851.8×
  47. 46Ciudad Benito JuárezNuevo León, Mexico
    851.8×
  48. 48Hwaseong-siGyeonggi-do, South Korea
    851.8×
  49. 48QuilpuéValparaiso, Chile
    851.8×
  50. 50CoronelBiobio, Chile
    841.8×
  51. 51Ganghwa-gunIncheon, South Korea
    841.8×
  52. 52CoquimboCoquimbo Region, Chile
    831.8×
  53. 53Bucheon-siGyeonggi-do, South Korea
    831.8×
  54. 54NairobiNairobi County, Kenya
    821.7×
  55. 54GuadalajaraJalisco, Mexico
    821.7×
  56. 56SeoulSeoul, South Korea
    811.7×
  57. 56ConcónValparaiso, Chile
    811.7×
  58. 58Wan ChaiWan Chai, Hong Kong
    811.7×
  59. 59IksanJeollabuk-do, South Korea
    811.7×
  60. 59GwangmyeongGyeonggi-do, South Korea
    811.7×
  61. 61TangjinChungcheongnam-do, South Korea
    811.7×
  62. 62MonterreyNuevo León, Mexico
    801.7×
  63. 63CauquenesMaule Region, Chile
    801.6×
  64. 64SalamancaGuanajuato, Mexico
    791.6×
  65. 65SuwonGyeonggi-do, South Korea
    791.6×
  66. 66GumiGyeongsangbuk-do, South Korea
    791.6×
  67. 67PubalGyeonggi-do, South Korea
    791.6×
  68. 67ChillánÑuble, Chile
    791.6×
  69. 69PyeongtaekGyeonggi-do, South Korea
    781.6×
  70. 70Guri-siGyeonggi-do, South Korea
    781.6×
  71. 71HualpénBiobio, Chile
    771.6×
  72. 71EdinburgTexas, United States
    771.6×
  73. 73Anyang-siGyeonggi-do, South Korea
    771.5×
  74. 74OsanGyeonggi-do, South Korea
    771.5×
  75. 74MunsanGyeonggi-do, South Korea
    771.5×
  76. 74KwangyangJeollanam-do, South Korea
    771.5×
  77. 78SantyokuGangwon-do, South Korea
    771.5×
  78. 78HongseongChungcheongnam-do, South Korea
    771.5×
  79. 80HwadoGyeonggi-do, South Korea
    761.5×
  80. 80QuinteroValparaiso, Chile
    761.5×
  81. 82Santa AnitaJalisco, Mexico
    751.5×
  82. 83ZapopanJalisco, Mexico
    751.5×
  83. 84ShakopeeMinnesota, United States
    751.5×
  84. 85San Francisco De BorjaLima region, Peru
    751.5×
  85. 86Tuen MunTuen Mun, Hong Kong
    741.4×
  86. 86Viña del MarValparaiso, Chile
    741.4×
  87. 86San CarlosÑuble, Chile
    741.4×
  88. 89YesanChungcheongnam-do, South Korea
    741.4×
  89. 90CheonanChungcheongnam-do, South Korea
    741.4×
  90. 90TemucoAraucania, Chile
    741.4×
  91. 92BoryeongChungcheongnam-do, South Korea
    741.4×
  92. 92AsanChungcheongnam-do, South Korea
    741.4×
  93. 92TalcaMaule Region, Chile
    741.4×
  94. 95GunsanJeollabuk-do, South Korea
    741.4×
  95. 95Eagle PassTexas, United States
    741.4×
  96. 97San AntonioTexas, United States
    731.4×
  97. 98Uijeongbu-siGyeonggi-do, South Korea
    731.4×
  98. 98SeosanChungcheongnam-do, South Korea
    731.4×
  99. 100Brownsvillelow-cost sensorsTexas, United States
    731.4×
  100. 101JungpyongNorth Chungcheong, South Korea
    731.4×
  101. 101CopiapóAtacama, Chile
    731.4×
  102. 103MinneapolisMinnesota, United States
    731.4×
  103. 103HadongGyeongsangnam-do, South Korea
    731.4×
  104. 105MéridaYucatán, Mexico
    721.4×
  105. 106KinzanChungcheongnam-do, South Korea
    721.4×
  106. 107PohangGyeongsangbuk-do, South Korea
    721.4×
  107. 107Les AbymesGuadeloupe, Guadeloupe
    721.4×
  108. 109Los ÁngelesBiobio, Chile
    721.4×
  109. 110WabuGyeonggi-do, South Korea
    711.3×
  110. 111YangjuGyeonggi-do, South Korea
    711.3×
  111. 112AnseongGyeonggi-do, South Korea
    711.3×
  112. 112MissionTexas, United States
    711.3×
  113. 114NamsaJeollabuk-do, South Korea
    711.3×
  114. 114Icheon-siGyeonggi-do, South Korea
    711.3×
  115. 114YŏnmuChungcheongnam-do, South Korea
    711.3×
  116. 114NamyangjuGyeonggi-do, South Korea
    711.3×
  117. 114TalcahuanoBiobio, Chile
    711.3×
  118. 114JeongeupJeollabuk-do, South Korea
    711.3×
  119. 120Mong KokYau Tsim Mong District, Hong Kong
    711.3×
  120. 120WaegwanGyeongsangbuk-do, South Korea
    711.3×
  121. 120Corpus ChristiTexas, United States
    711.3×
  122. 123YeojuGyeonggi-do, South Korea
    701.3×
  123. 123SangjuGyeongsangbuk-do, South Korea
    701.3×
  124. 125NajuJeollanam-do, South Korea
    701.3×
  125. 125Seongnam-siGyeonggi-do, South Korea
    701.3×
  126. 125Le LamentinMartinique, Martinique
    701.3×
  127. 128Khlong LuangPathum Thani, Thailand
    701.3×
  128. 128HanamGyeonggi-do, South Korea
    701.3×
  129. 128Naucalpan de JuárezMéxico, Mexico
    701.3×
  130. 131WŏnjuGangwon-do, South Korea
    701.3×
  131. 131BuanJeollabuk-do, South Korea
    701.3×
  132. 133BurnsvilleMinnesota, United States
    701.3×
  133. 134Silao de la VictoriaGuanajuato, Mexico
    691.3×
  134. 134Ciudad General EscobedoNuevo León, Mexico
    691.3×
  135. 136Bang Bo DistrictSamut Prakan, Thailand
    691.3×
  136. 136Tin Shui WaiYuen Long, Hong Kong
    691.3×
  137. 136San Tung Chung HangIslands, Hong Kong
    691.3×
  138. 136WanjuJeollabuk-do, South Korea
    691.3×
  139. 136MungyeongGyeongsangbuk-do, South Korea
    691.3×
  140. 136GwangjuGyeonggi-do, South Korea
    691.3×
  141. 142NangenJeollabuk-do, South Korea
    691.3×
  142. 143Sham Shui PoSham Shui Po District, Hong Kong
    691.2×
  143. 143Saint MichaelMinnesota, United States
    691.2×
  144. 145VranjeCentral Serbia, Serbia
    691.2×
  145. 145ChiguayanteBiobio, Chile
    691.2×
  146. 147KaohsiungTakao, Taiwan
    691.2×
  147. 148BlaineMinnesota, United States
    681.2×
  148. 148SejongSejong-si, South Korea
    681.2×
  149. 150CheorwonGangwon-do, South Korea
    681.2×
  150. 150ChangsuJeollabuk-do, South Korea
    681.2×
  151. 150Fort-de-FranceMartinique, Martinique
    681.2×
  152. 153Sau Mau PingKwun Tong District, Hong Kong
    681.2×
  153. 153NonsanChungcheongnam-do, South Korea
    681.2×
  154. 155Yangp'yŏngGyeonggi-do, South Korea
    681.2×
  155. 155ChinjuGyeongsangnam-do, South Korea
    681.2×
  156. 155HwawŏnDaegu, South Korea
    681.2×
  157. 158SuncheonJeollanam-do, South Korea
    681.2×
  158. 158ConcepciónBiobio, Chile
    681.2×
  159. 158MexicaliBaja California, Mexico
    681.2×
  160. 161YeonilGyeongsangbuk-do, South Korea
    671.2×
  161. 161HayangGyeongsangbuk-do, South Korea
    671.2×
  162. 161TepicNayarit, Mexico
    671.2×
  163. 164UlsanUlsan, South Korea
    671.2×
  164. 164CalamaAntofagasta, Chile
    671.2×
  165. 164Live OakTexas, United States
    671.2×
  166. 167Tai PoTai Po, Hong Kong
    671.2×
  167. 167FanlingNorth District, Hong Kong
    671.2×
  168. 167Cheongju-siNorth Chungcheong, South Korea
    671.2×
  169. 167ToméBiobio, Chile
    671.2×
  170. 171Nong Bua LamphuNong Bua Lamphu, Thailand
    671.2×
  171. 171YongkangTaiwan, Taiwan
    671.2×
  172. 171Kwai ChungKwai Tsing District, Hong Kong
    671.2×
  173. 171DaejeonDaejeon, South Korea
    671.2×
  174. 171GwangyangJeollanam-do, South Korea
    671.2×
  175. 171Santiago de QuerétaroQuerétaro, Mexico
    671.2×
  176. 177DaeguDaegu, South Korea
    671.2×
  177. 178Taesal-liChungcheongnam-do, South Korea
    661.2×
  178. 179Chiayi CityTaiwan, Taiwan
    661.2×
  179. 180KimjeJeollabuk-do, South Korea
    661.1×
  180. 180Apple ValleyMinnesota, United States
    661.1×
  181. 180Pasadenalow-cost sensorsCalifornia, United States
    661.1×
  182. 183KanchanaburiKanchanaburi, Thailand
    661.1×
  183. 184AshgabatAshgabat, Turkmenistan
    661.1×
  184. 184Tsuen WanTsuen Wan, Hong Kong
    661.1×
  185. 184KoesanNorth Chungcheong, South Korea
    661.1×
  186. 184JumunjinGangwon-do, South Korea
    661.1×
  187. 188OkcheonNorth Chungcheong, South Korea
    661.1×
  188. 188GoseongGyeongsangnam-do, South Korea
    661.1×
  189. 188GimcheonGyeongsangbuk-do, South Korea
    661.1×
  190. 191FengshanTakao, Taiwan
    651.1×
  191. 191ChungjuNorth Chungcheong, South Korea
    651.1×
  192. 191Donghae CityGangwon-do, South Korea
    651.1×
  193. 194YecheonGyeongsangbuk-do, South Korea
    651.1×
  194. 194BuyeoChungcheongnam-do, South Korea
    651.1×
  195. 194MiryangGyeongsangnam-do, South Korea
    651.1×
  196. 194GangneungGangwon-do, South Korea
    651.1×
  197. 198Bang NaBangkok, Thailand
    651.1×
  198. 198SokchoGangwon-do, South Korea
    651.1×
  199. 198Chinch'ŏnNorth Chungcheong, South Korea
    651.1×

Top 200 of 2,439 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 26, 2025, smogrank.com/history/2025-05-26 (accessed 2 Oct 2026).

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