SmogRank / History / August 24, 2025

Most polluted cities on August 24, 2025

2,504 cities ranked by their average PM2.5 over the day; the worst was Saltillo, Mexico, at 366.0 µg/m³. Each city's own local calendar day.

← Saltillo 366.0 WHO 24-hour guideline
Every city ranked for August 24, 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1SaltilloCoahuila, Mexico
    500+24.4×
  2. 2DhaulpurRajasthan, India
    26712.8×
  3. 3SuratGujarat, India
    2119.1×
  4. 4AurangābādBihar, India
    1685.3×
  5. 5HualpénBiobio, Chile
    1624.8×
  6. 6DushanbeDushanbe, Tajikistan
    1624.8×
  7. 7Beitbridgelow-cost sensorsMatabeleland South Province, Zimbabwe
    1594.4×
  8. 8TalcahuanoBiobio, Chile
    1554.1×
  9. 9KigaliKigali, Rwanda
    1533.9×
  10. 10PatancheruTelangana, India
    1453.5×
  11. 11CuddaloreTamil Nadu, India
    1413.5×
  12. 12Dubailow-cost sensorsDubai, United Arab Emirates
    1413.4×
  13. 13Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1403.4×
  14. 14VirārMaharashtra, India
    1403.4×
  15. 15TalcaMaule Region, Chile
    1383.4×
  16. 16NacimientoBiobio, Chile
    1353.3×
  17. 16LewistonIdaho, United States
    1353.3×
  18. 18PonferradaCastille and León, Spain
    1323.2×
  19. 19ChillánÑuble, Chile
    1273.1×
  20. 20San CarlosÑuble, Chile
    1253.0×
  21. 21Faisalabadlow-cost sensorsPunjab, Pakistan
    1243.0×
  22. 22TalaganteSantiago Metropolitan, Chile
    1233.0×
  23. 23Iloilolow-cost sensorsWestern Visayas, Philippines
    1212.9×
  24. 24GummidipundiTamil Nadu, India
    1212.9×
  25. 25BendOregon, United States
    1182.8×
  26. 26JakartaJakarta, Indonesia
    1182.8×
  27. 27Istanbullow-cost sensorsIstanbul, Turkey
    1172.8×
  28. 28VijayawadaAndhra Pradesh, India
    1172.8×
  29. 29ChittoorAndhra Pradesh, India
    1152.7×
  30. 30RengoO'Higgins Region, Chile
    1132.7×
  31. 31TirupatiAndhra Pradesh, India
    1122.7×
  32. 31SamāstipurBihar, India
    1122.7×
  33. 33GobindgarhPunjab, India
    1112.6×
  34. 34TocopillaAntofagasta, Chile
    1082.5×
  35. 35MoscowIdaho, United States
    1062.5×
  36. 36RourkelaOdisha, India
    1062.5×
  37. 37AlangadKerala, India
    1052.5×
  38. 38LimaLima Province, Peru
    1042.4×
  39. 39RasapūdipalemAndhra Pradesh, India
    1042.4×
  40. 40KadapaAndhra Pradesh, India
    1032.4×
  41. 41NalbāriAssam, India
    1022.4×
  42. 42QuillotaValparaiso, Chile
    1022.4×
  43. 43ToméBiobio, Chile
    1002.3×
  44. 44SantiagoSantiago Metropolitan, Chile
    992.3×
  45. 45KishanganjBihar, India
    992.3×
  46. 46PullmanWashington, United States
    972.3×
  47. 47Quezon Citylow-cost sensorsNational Capital Region, Philippines
    972.2×
  48. 48Hararelow-cost sensorsHarare, Zimbabwe
    962.2×
  49. 49NagaonAssam, India
    962.2×
  50. 49CoronelBiobio, Chile
    962.2×
  51. 51SangāreddiTelangana, India
    962.2×
  52. 52San Francisco De BorjaLima region, Peru
    952.2×
  53. 53LinaresMaule Region, Chile
    952.2×
  54. 54ChennaiTamil Nadu, India
    942.2×
  55. 54Los ÁngelesBiobio, Chile
    942.2×
  56. 56KalaburagiKarnataka, India
    942.1×
  57. 57Ashaimanlow-cost sensorsGreater Accra, Ghana
    942.1×
  58. 58MangaluruKarnataka, India
    932.1×
  59. 59SaharsaBihar, India
    932.1×
  60. 59AmritsarPunjab, India
    932.1×
  61. 61SerilingampalleTelangana, India
    922.1×
  62. 62RānipetTamil Nadu, India
    922.1×
  63. 62San Pedro de la PazBiobio, Chile
    922.1×
  64. 64ConcepciónBiobio, Chile
    922.1×
  65. 64RedmondOregon, United States
    922.1×
  66. 66QuilpuéValparaiso, Chile
    922.1×
  67. 66QuthbullapurTelangana, India
    922.1×
  68. 68HualquiBiobio, Chile
    912.1×
  69. 69Multanlow-cost sensorsPunjab, Pakistan
    912.0×
  70. 70AnantapurAndhra Pradesh, India
    912.0×
  71. 70CuricóMaule Region, Chile
    912.0×
  72. 72KannurKerala, India
    902.0×
  73. 73RamanathapuramTamil Nadu, India
    902.0×
  74. 73CopiapóAtacama, Chile
    902.0×
  75. 75AjmerRajasthan, India
    892.0×
  76. 76Puerto AysénAysén, Chile
    881.9×
  77. 77Gujranwalalow-cost sensorsPunjab, Pakistan
    871.9×
  78. 77ThrissurKerala, India
    871.9×
  79. 79OsornoLos Lagos Region, Chile
    871.9×
  80. 79VapiGujarat, India
    871.9×
  81. 81Quettalow-cost sensorsBalochistan, Pakistan
    861.9×
  82. 82SatnaMadhya Pradesh, India
    861.9×
  83. 83CoyhaiqueAysén, Chile
    861.8×
  84. 84ThiruvananthapuramKerala, India
    851.8×
  85. 84CuranilahueBiobio, Chile
    851.8×
  86. 86LoniUttar Pradesh, India
    851.8×
  87. 87HyderabadTelangana, India
    841.8×
  88. 88BawānaDelhi, India
    841.8×
  89. 89KamisuIbaraki, Japan
    831.8×
  90. 89KhargharMaharashtra, India
    831.8×
  91. 91UliyazhathuraKerala, India
    831.8×
  92. 92BhiwadiRajasthan, India
    831.7×
  93. 93BegusaraiBihar, India
    831.7×
  94. 94ChāpraBihar, India
    821.7×
  95. 95TiruchirappalliTamil Nadu, India
    821.7×
  96. 95NeelankaraiTamil Nadu, India
    821.7×
  97. 97Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    821.7×
  98. 97AricaArica y Parinacota Region, Chile
    821.7×
  99. 99KuwanaMie, Japan
    811.7×
  100. 100BhāgalpurBihar, India
    811.7×
  101. 100YokkaichiMie, Japan
    811.7×
  102. 100Puerto MonttLos Lagos Region, Chile
    811.7×
  103. 103VillarricaAraucania, Chile
    811.7×
  104. 103Puerto VarasLos Lagos Region, Chile
    811.7×
  105. 105AmaAichi, Japan
    801.7×
  106. 106MatsusakaMie, Japan
    801.6×
  107. 107QuinteroValparaiso, Chile
    801.6×
  108. 107InabeMie, Japan
    801.6×
  109. 109KariyaAichi, Japan
    791.6×
  110. 109OurenseGalicia, Spain
    791.6×
  111. 111Hyderabadlow-cost sensorsSindh, Pakistan
    791.6×
  112. 111Dera Colliery TownshipOdisha, India
    791.6×
  113. 113PocatelloIdaho, United States
    791.6×
  114. 114VelloreTamil Nadu, India
    781.6×
  115. 114UlsanUlsan, South Korea
    781.6×
  116. 114ŌtsukiYamanashi, Japan
    781.6×
  117. 114FukuroiShizuoka, Japan
    781.6×
  118. 118ConcónValparaiso, Chile
    781.6×
  119. 119NandedMaharashtra, India
    781.6×
  120. 120CallaoCallao, Peru
    781.6×
  121. 121Karachilow-cost sensorsSindh, Pakistan
    771.5×
  122. 121CholulaPuebla, Mexico
    771.5×
  123. 123BhiwandiMaharashtra, India
    771.5×
  124. 123ShimodaShizuoka, Japan
    771.5×
  125. 125TaharaAichi, Japan
    771.5×
  126. 125SawaraChiba, Japan
    771.5×
  127. 127Lahorelow-cost sensorsPunjab, Pakistan
    771.5×
  128. 127SaikūMie, Japan
    771.5×
  129. 127ChilliwackBritish Columbia, Canada
    771.5×
  130. 130KakegawaShizuoka, Japan
    771.5×
  131. 130KaizuGifu, Japan
    771.5×
  132. 130AyaseKanagawa, Japan
    771.5×
  133. 133RancaguaO'Higgins Region, Chile
    761.5×
  134. 134IseMie, Japan
    761.5×
  135. 134IchinomiyaAichi, Japan
    761.5×
  136. 134GamagōriAichi, Japan
    761.5×
  137. 134KosaiShizuoka, Japan
    761.5×
  138. 138OnoHyōgo, Japan
    761.5×
  139. 138OkazakiAichi, Japan
    761.5×
  140. 138HamakitaShizuoka, Japan
    761.5×
  141. 138ChibaChiba, Japan
    761.5×
  142. 138AntofagastaAntofagasta, Chile
    761.5×
  143. 138TōkaiAichi, Japan
    761.5×
  144. 144PāliRajasthan, India
    761.5×
  145. 144GotembaShizuoka, Japan
    761.5×
  146. 144TsuchiuraIbaraki, Japan
    761.5×
  147. 147DelhiDelhi, India
    761.5×
  148. 147EisenGyeongsangbuk-do, South Korea
    761.5×
  149. 147TobaMie, Japan
    761.5×
  150. 147ShimaMie, Japan
    761.5×
  151. 147ValdiviaLos Ríos Region, Chile
    761.5×
  152. 152VijayapuraKarnataka, India
    751.5×
  153. 153CoquimboCoquimbo Region, Chile
    751.5×
  154. 154TateyamaChiba, Japan
    751.5×
  155. 154KurihamaKanagawa, Japan
    751.5×
  156. 154Temalow-cost sensorsGreater Accra, Ghana
    751.5×
  157. 157ToyohashiAichi, Japan
    751.5×
  158. 157La UniónLos Ríos Region, Chile
    751.5×
  159. 157La SerenaCoquimbo Region, Chile
    751.5×
  160. 160GorakhpurUttar Pradesh, India
    751.5×
  161. 160NagoyaAichi, Japan
    751.5×
  162. 160Accralow-cost sensorsGreater Accra, Ghana
    751.5×
  163. 163KakamigaharaGifu, Japan
    741.4×
  164. 163AtamiShizuoka, Japan
    741.4×
  165. 163AridaWakayama, Japan
    741.4×
  166. 166TokiGifu, Japan
    741.4×
  167. 166SuzukaMie, Japan
    741.4×
  168. 166ChiguayanteBiobio, Chile
    741.4×
  169. 169PohangGyeongsangbuk-do, South Korea
    741.4×
  170. 169ToyotaAichi, Japan
    741.4×
  171. 169NagahamaShiga, Japan
    741.4×
  172. 169KamakuraKanagawa, Japan
    741.4×
  173. 169IwataShizuoka, Japan
    741.4×
  174. 169KasamaIbaraki, Japan
    741.4×
  175. 169BakersfieldCalifornia, United States
    741.4×
  176. 176SilcharAssam, India
    741.4×
  177. 176NishioAichi, Japan
    741.4×
  178. 176ChiryūAichi, Japan
    741.4×
  179. 176ChigasakiKanagawa, Japan
    741.4×
  180. 176TuxtlaChiapas, Mexico
    741.4×
  181. 181FujiedaShizuoka, Japan
    741.4×
  182. 181MobaraChiba, Japan
    741.4×
  183. 181Medina del CampoCastille and León, Spain
    741.4×
  184. 181FuenlabradaMadrid, Spain
    741.4×
  185. 185TsuMie, Japan
    741.4×
  186. 185AnanTokushima, Japan
    741.4×
  187. 185OmigawaChiba, Japan
    741.4×
  188. 188MorādābādUttar Pradesh, India
    731.4×
  189. 188HigashinozoeHyōgo, Japan
    731.4×
  190. 188Kakogawachō-honmachiHyōgo, Japan
    731.4×
  191. 188KainanWakayama, Japan
    731.4×
  192. 188MóstolesMadrid, Spain
    731.4×
  193. 193SandachōHyōgo, Japan
    731.4×
  194. 193IwadeWakayama, Japan
    731.4×
  195. 193HokotaIbaraki, Japan
    731.4×
  196. 193MinamibōsōChiba, Japan
    731.4×
  197. 197VrindāvanUttar Pradesh, India
    731.4×
  198. 197Icheon-siGyeonggi-do, South Korea
    731.4×
  199. 197TokonameAichi, Japan
    731.4×
  200. 197HashimaGifu, Japan
    731.4×

Top 200 of 2,504 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, August 24, 2025, smogrank.com/history/2025-08-24 (accessed 2 Oct 2026).

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