SmogRank / History / August 20, 2025

Most polluted cities on August 20, 2025

2,585 cities ranked by their average PM2.5 over the day; the worst was Nagapattinam, India, at 426.0 µg/m³. Each city's own local calendar day.

← Nagapattinam 426.0 µg/m³ 400 µg/m³15 WHO 24-hour guideline
Every city ranked for August 20, 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. 1NagapattinamTamil Nadu, India
    500+28.4×
  2. 2SaltilloCoahuila, Mexico
    500+24.4×
  3. 3SingrauliMadhya Pradesh, India
    43119.4×
  4. 4ArāriaBihar, India
    23110.4×
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1614.6×
  6. 6RānipetTamil Nadu, India
    1594.5×
  7. 7DushanbeDushanbe, Tajikistan
    1584.3×
  8. 8ManzanaresCastille-La Mancha, Spain
    1574.3×
  9. 9Multanlow-cost sensorsPunjab, Pakistan
    1564.2×
  10. 10LorcaMurcia, Spain
    1554.1×
  11. 11Faisalabadlow-cost sensorsPunjab, Pakistan
    1523.8×
  12. 12KigaliKigali, Rwanda
    1523.8×
  13. 13PāliRajasthan, India
    1513.7×
  14. 14OotyTamil Nadu, India
    1473.6×
  15. 15Bihār SharīfBihar, India
    1433.5×
  16. 16CaravacaMurcia, Spain
    1423.5×
  17. 17JumillaMurcia, Spain
    1413.5×
  18. 18CuddaloreTamil Nadu, India
    1393.4×
  19. 19GummidipundiTamil Nadu, India
    1343.3×
  20. 20Bahawalpurlow-cost sensorsPunjab, Pakistan
    1323.2×
  21. 21AlcantarillaMurcia, Spain
    1313.2×
  22. 22SamāstipurBihar, India
    1293.1×
  23. 23PatancheruTelangana, India
    1283.1×
  24. 24San Salvador TizatlalliMéxico, Mexico
    1263.0×
  25. 25AlbaceteCastille-La Mancha, Spain
    1253.0×
  26. 26Istanbullow-cost sensorsIstanbul, Turkey
    1243.0×
  27. 27MóstolesMadrid, Spain
    1202.9×
  28. 28BathindaPunjab, India
    1192.9×
  29. 29KadapaAndhra Pradesh, India
    1172.8×
  30. 30UnderaGujarat, India
    1172.8×
  31. 31Molina de SeguraMurcia, Spain
    1152.8×
  32. 32VijayawadaAndhra Pradesh, India
    1152.7×
  33. 33ValdemoroMadrid, Spain
    1132.7×
  34. 34JhānsiUttar Pradesh, India
    1132.7×
  35. 35JakartaJakarta, Indonesia
    1122.7×
  36. 35MurciaMurcia, Spain
    1122.7×
  37. 37ChittoorAndhra Pradesh, India
    1112.6×
  38. 38GobindgarhPunjab, India
    1102.6×
  39. 39OsornoLos Lagos Region, Chile
    1102.6×
  40. 40CoyhaiqueAysén, Chile
    1092.6×
  41. 41Lagoslow-cost sensorsLagos, Nigeria
    1092.6×
  42. 42BhiwadiRajasthan, India
    1082.5×
  43. 43BuxarBihar, India
    1072.5×
  44. 44FuenlabradaMadrid, Spain
    1062.5×
  45. 45NacimientoBiobio, Chile
    1052.5×
  46. 46Sri GanganagarRajasthan, India
    1052.5×
  47. 47RamanathapuramTamil Nadu, India
    1042.5×
  48. 48XonacatlánMéxico, Mexico
    1022.4×
  49. 49Barrio de PeralMurcia, Spain
    1022.4×
  50. 50GūduvāncheriTamil Nadu, India
    1022.4×
  51. 51RoparPunjab, India
    992.3×
  52. 52DhaulpurRajasthan, India
    992.3×
  53. 53Vientianelow-cost sensorsVientiane Prefecture, Laos
    982.3×
  54. 54AlangadKerala, India
    972.3×
  55. 55MuzaffarnagarUttar Pradesh, India
    972.3×
  56. 56TuxtlaChiapas, Mexico
    972.3×
  57. 57NagaonAssam, India
    962.2×
  58. 58Puerto AysénAysén, Chile
    962.2×
  59. 59LimaLima Province, Peru
    962.2×
  60. 60MangaluruKarnataka, India
    952.2×
  61. 61QuthbullapurTelangana, India
    942.1×
  62. 62Collado-VillalbaMadrid, Spain
    942.1×
  63. 63SangāreddiTelangana, India
    932.1×
  64. 63BaddiHimachal Pradesh, India
    932.1×
  65. 65BawānaDelhi, India
    912.0×
  66. 66LudhianaPunjab, India
    912.0×
  67. 66La UniónLos Ríos Region, Chile
    912.0×
  68. 68CuricóMaule Region, Chile
    912.0×
  69. 69LinaresMaule Region, Chile
    902.0×
  70. 70CuranilahueBiobio, Chile
    902.0×
  71. 71Puerto VarasLos Lagos Region, Chile
    902.0×
  72. 71Greater NoidaUttar Pradesh, India
    902.0×
  73. 73AurangābādBihar, India
    892.0×
  74. 74Rawalpindilow-cost sensorsPunjab, Pakistan
    881.9×
  75. 74San CarlosÑuble, Chile
    881.9×
  76. 76KalaburagiKarnataka, India
    871.9×
  77. 76HaenamJeollanam-do, South Korea
    871.9×
  78. 78MadridMadrid, Spain
    871.9×
  79. 79TirupatiAndhra Pradesh, India
    861.9×
  80. 79San Francisco TlalcilalcalpanMéxico, Mexico
    861.9×
  81. 81BaripādaOdisha, India
    861.9×
  82. 82Puerto MonttLos Lagos Region, Chile
    861.8×
  83. 83SatnaMadhya Pradesh, India
    851.8×
  84. 84Puente AltoSantiago Metropolitan, Chile
    851.8×
  85. 85Gujranwalalow-cost sensorsPunjab, Pakistan
    841.8×
  86. 85Ashaimanlow-cost sensorsGreater Accra, Ghana
    841.8×
  87. 87NagaiYamagata, Japan
    841.8×
  88. 88NarelaDelhi, India
    841.8×
  89. 89KannurKerala, India
    831.8×
  90. 89RancaguaO'Higgins Region, Chile
    831.8×
  91. 91ChūruRajasthan, India
    831.8×
  92. 91BegusaraiBihar, India
    831.8×
  93. 91AlgeteMadrid, Spain
    831.8×
  94. 94ChennaiTamil Nadu, India
    831.7×
  95. 95HyderabadTelangana, India
    821.7×
  96. 95SagaeYamagata, Japan
    821.7×
  97. 97ThrissurKerala, India
    821.7×
  98. 97TalaganteSantiago Metropolitan, Chile
    821.7×
  99. 99RasapūdipalemAndhra Pradesh, India
    821.7×
  100. 99ChāpraBihar, India
    821.7×
  101. 101LucknowUttar Pradesh, India
    821.7×
  102. 102RengoO'Higgins Region, Chile
    821.7×
  103. 103Sialkotlow-cost sensorsPunjab, Pakistan
    811.7×
  104. 104Alcalá de HenaresMadrid, Spain
    811.7×
  105. 105JhunjhunūnRajasthan, India
    811.7×
  106. 106SilcharAssam, India
    801.6×
  107. 106RourkelaOdisha, India
    801.6×
  108. 108SakataYamagata, Japan
    801.6×
  109. 109TalcaMaule Region, Chile
    801.6×
  110. 110KishanganjBihar, India
    801.6×
  111. 111CopiapóAtacama, Chile
    791.6×
  112. 112BengaluruKarnataka, India
    791.6×
  113. 113NalbāriAssam, India
    791.6×
  114. 114PonferradaCastille and León, Spain
    791.6×
  115. 114ChillánÑuble, Chile
    791.6×
  116. 116Dubailow-cost sensorsDubai, United Arab Emirates
    791.6×
  117. 116UdaipurRajasthan, India
    791.6×
  118. 118DelhiDelhi, India
    781.6×
  119. 118TsuruokaYamagata, Japan
    781.6×
  120. 118HualquiBiobio, Chile
    781.6×
  121. 121Quezon Citylow-cost sensorsNational Capital Region, Philippines
    781.6×
  122. 121HimimachiToyama, Japan
    781.6×
  123. 121CoronelBiobio, Chile
    781.6×
  124. 124CholulaPuebla, Mexico
    781.6×
  125. 124TocopillaAntofagasta, Chile
    781.6×
  126. 124SantiagoSantiago Metropolitan, Chile
    781.6×
  127. 127LoniUttar Pradesh, India
    771.5×
  128. 127Fukui-shiFukui, Japan
    771.5×
  129. 127CartagenaMurcia, Spain
    771.5×
  130. 127KaiserslauternRheinland-Pfalz, Germany
    771.5×
  131. 131VillenaValencia, Spain
    771.5×
  132. 132CosladaMadrid, Spain
    771.5×
  133. 133TorreviejaValencia, Spain
    771.5×
  134. 133ShonaiYamagata, Japan
    771.5×
  135. 135Quettalow-cost sensorsBalochistan, Pakistan
    761.5×
  136. 135UozuToyama, Japan
    761.5×
  137. 137ŌtsukiYamanashi, Japan
    761.5×
  138. 137VillarricaAraucania, Chile
    761.5×
  139. 139ConcónValparaiso, Chile
    761.5×
  140. 139UliyazhathuraKerala, India
    761.5×
  141. 141KatiharBihar, India
    751.5×
  142. 141VijayapuraKarnataka, India
    751.5×
  143. 143SerilingampalleTelangana, India
    751.5×
  144. 144Tottori-shiTottori, Japan
    751.5×
  145. 144QuinteroValparaiso, Chile
    751.5×
  146. 144CauquenesMaule Region, Chile
    751.5×
  147. 147NajafgarhDelhi, India
    751.5×
  148. 147PartizánskeTrenčín Region, Slovakia
    751.5×
  149. 147ImizuToyama, Japan
    751.5×
  150. 150San Francisco De BorjaLima region, Peru
    751.5×
  151. 151JaipurRajasthan, India
    741.4×
  152. 152Karachilow-cost sensorsSindh, Pakistan
    741.4×
  153. 152Temalow-cost sensorsGreater Accra, Ghana
    741.4×
  154. 152Los ÁngelesBiobio, Chile
    741.4×
  155. 155RājsamandRajasthan, India
    741.4×
  156. 155HigashineYamagata, Japan
    741.4×
  157. 155SadoNiigata, Japan
    741.4×
  158. 158Lahorelow-cost sensorsPunjab, Pakistan
    741.4×
  159. 158ShibataNiigata, Japan
    741.4×
  160. 158NakatsuOita, Japan
    741.4×
  161. 161MuzaffarpurBihar, India
    741.4×
  162. 161TemucoAraucania, Chile
    741.4×
  163. 163MikuniFukui, Japan
    741.4×
  164. 163QuilpuéValparaiso, Chile
    741.4×
  165. 165TsubataIshikawa, Japan
    731.4×
  166. 165Torrejón de ArdozMadrid, Spain
    731.4×
  167. 165SalamancaCastille and León, Spain
    731.4×
  168. 165Aya NagarDelhi, India
    731.4×
  169. 169ShivamoggaKarnataka, India
    731.4×
  170. 169TakaokaToyama, Japan
    731.4×
  171. 169ItoigawaNiigata, Japan
    731.4×
  172. 169CórdobaAndalusia, Spain
    731.4×
  173. 169RangioraCanterbury, New Zealand
    731.4×
  174. 174KanpurUttar Pradesh, India
    731.4×
  175. 174YonezawaYamagata, Japan
    731.4×
  176. 174CallaoCallao, Peru
    731.4×
  177. 174TonamiToyama, Japan
    731.4×
  178. 178JalandharPunjab, India
    731.4×
  179. 178BhiwandiMaharashtra, India
    731.4×
  180. 178MaizuruKyoto, Japan
    731.4×
  181. 178ShiroishiMiyagi, Japan
    731.4×
  182. 178ValdiviaLos Ríos Region, Chile
    731.4×
  183. 183SarajevoFederation of B&H, Bosnia and Herzegovina
    721.4×
  184. 183HualpénBiobio, Chile
    721.4×
  185. 185ShinjōYamagata, Japan
    721.4×
  186. 186MinamiuonumaNiigata, Japan
    721.4×
  187. 187HakuiIshikawa, Japan
    721.3×
  188. 187YamagataYamagata, Japan
    721.3×
  189. 189Islamabadlow-cost sensorsIslamabad, Pakistan
    711.3×
  190. 189IshinomakiMiyagi, Japan
    711.3×
  191. 191BagalkotKarnataka, India
    711.3×
  192. 191SabaeFukui, Japan
    711.3×
  193. 191NyūzenToyama, Japan
    711.3×
  194. 191NiigataNiigata, Japan
    711.3×
  195. 191KomatsuIshikawa, Japan
    711.3×
  196. 191Wadgaon KolhatiMaharashtra, India
    711.3×
  197. 197GhāziābādUttar Pradesh, India
    711.3×
  198. 197VapiGujarat, India
    711.3×
  199. 199AjmerRajasthan, India
    711.3×
  200. 199AntofagastaAntofagasta, Chile
    711.3×

Top 200 of 2,585 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 20, 2025, smogrank.com/history/2025-08-20 (accessed 2 Oct 2026).

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