SmogRank / History / May 9, 2025

Most polluted cities on May 9, 2025

2,734 cities ranked by their average PM2.5 over the day; the worst was Nagaon, India, at 125.0 µg/m³. Each city's own local calendar day.

← Nagaon 125.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 9, 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. 1NagaonAssam, India
    2008.3×
  2. 2RamanathapuramTamil Nadu, India
    1725.7×
  3. 2JhālāwārRajasthan, India
    1725.7×
  4. 4NarelaDelhi, India
    1675.2×
  5. 5BawānaDelhi, India
    1675.2×
  6. 6DushanbeDushanbe, Tajikistan
    1665.1×
  7. 7HājīpurBihar, India
    1655.0×
  8. 8SingrauliMadhya Pradesh, India
    1644.9×
  9. 9NajafgarhDelhi, India
    1634.9×
  10. 10LoniUttar Pradesh, India
    1634.8×
  11. 11CuttackOdisha, India
    1584.3×
  12. 12PatnaBihar, India
    1574.2×
  13. 12DelhiDelhi, India
    1574.2×
  14. 14GhāziābādUttar Pradesh, India
    1564.2×
  15. 15ĀsansolWest Bengal, India
    1554.1×
  16. 16Dera MāndiDelhi, India
    1554.1×
  17. 17Santa Anita - Los FicusLima region, Peru
    1554.1×
  18. 18BegusaraiBihar, India
    1554.1×
  19. 19RourkelaOdisha, India
    1544.0×
  20. 20CholulaPuebla, Mexico
    1543.9×
  21. 21Sri GanganagarRajasthan, India
    1533.9×
  22. 22BhelaiChhattisgarh, India
    1523.8×
  23. 23KanchipuramTamil Nadu, India
    1523.8×
  24. 24BulandshahrUttar Pradesh, India
    1513.7×
  25. 25YasothonYasothon, Thailand
    1503.7×
  26. 26BaddiHimachal Pradesh, India
    1493.7×
  27. 27AurangābādBihar, India
    1453.6×
  28. 28CoyhaiqueAysén, Chile
    1443.5×
  29. 29RājgīrBihar, India
    1413.4×
  30. 30NoidaUttar Pradesh, India
    1403.4×
  31. 31AngulOdisha, India
    1393.4×
  32. 32BikanerRajasthan, India
    1373.3×
  33. 33BhiwadiRajasthan, India
    1363.3×
  34. 34KeonjhargarhOdisha, India
    1343.3×
  35. 35GuwahatiAssam, India
    1313.2×
  36. 36TirupatiAndhra Pradesh, India
    1283.1×
  37. 37RairangpurOdisha, India
    1283.1×
  38. 38MuzaffarnagarUttar Pradesh, India
    1273.1×
  39. 39GobindgarhPunjab, India
    1263.1×
  40. 40UnderaGujarat, India
    1263.0×
  41. 41BārānRajasthan, India
    1263.0×
  42. 42Islamabadlow-cost sensorsIslamabad, Pakistan
    1263.0×
  43. 43Dera Colliery TownshipOdisha, India
    1243.0×
  44. 44DādriUttar Pradesh, India
    1243.0×
  45. 45Dubailow-cost sensorsDubai, United Arab Emirates
    1222.9×
  46. 45GorakhpurUttar Pradesh, India
    1222.9×
  47. 45ChandigarhChandigarh, India
    1222.9×
  48. 48NacimientoBiobio, Chile
    1222.9×
  49. 49LucknowUttar Pradesh, India
    1212.9×
  50. 50Puerto AysénAysén, Chile
    1202.9×
  51. 51PurniaBihar, India
    1192.9×
  52. 52ManamaManama, Bahrain
    1192.9×
  53. 53MohaliPunjab, India
    1192.8×
  54. 54BārmerRajasthan, India
    1182.8×
  55. 55KohimaNagaland, India
    1182.8×
  56. 56AnantapurAndhra Pradesh, India
    1172.8×
  57. 57PithampurMadhya Pradesh, India
    1152.8×
  58. 58DhuleMaharashtra, India
    1152.7×
  59. 59Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1152.7×
  60. 60NandriRajasthan, India
    1142.7×
  61. 61VijayawadaAndhra Pradesh, India
    1142.7×
  62. 62KalyānMaharashtra, India
    1132.7×
  63. 63KhurjaUttar Pradesh, India
    1132.7×
  64. 64RānīganjWest Bengal, India
    1132.7×
  65. 64MangaluruKarnataka, India
    1132.7×
  66. 66MothīhāriBihar, India
    1132.7×
  67. 67BelpaharOdisha, India
    1122.7×
  68. 68CallaoCallao, Peru
    1122.7×
  69. 69NandedMaharashtra, India
    1112.6×
  70. 69BarbilOdisha, India
    1112.6×
  71. 71ShillongMeghalaya, India
    1112.6×
  72. 72KanpurUttar Pradesh, India
    1112.6×
  73. 73MuzaffarpurBihar, India
    1102.6×
  74. 74BhubaneswarOdisha, India
    1102.6×
  75. 75TirumalaAndhra Pradesh, India
    1092.6×
  76. 76HanumāngarhRajasthan, India
    1082.6×
  77. 77JalandharPunjab, India
    1082.5×
  78. 78KigaliKigali, Rwanda
    1072.5×
  79. 78GummidipundiTamil Nadu, India
    1072.5×
  80. 78BhilwaraRajasthan, India
    1072.5×
  81. 81SangāreddiTelangana, India
    1072.5×
  82. 82TiruchirappalliTamil Nadu, India
    1062.5×
  83. 83ByasanagarOdisha, India
    1062.5×
  84. 84DurgapurWest Bengal, India
    1062.5×
  85. 85RasapūdipalemAndhra Pradesh, India
    1062.5×
  86. 85AjmerRajasthan, India
    1062.5×
  87. 85AtlixcoPuebla, Mexico
    1062.5×
  88. 85CuricóMaule Region, Chile
    1062.5×
  89. 89SiwānBihar, India
    1052.5×
  90. 89DūngarpurRajasthan, India
    1052.5×
  91. 91PueblaPuebla, Mexico
    1052.5×
  92. 91AlangadKerala, India
    1052.5×
  93. 93ChennaiTamil Nadu, India
    1042.5×
  94. 94BadlapurMaharashtra, India
    1032.4×
  95. 95JodhpurRajasthan, India
    1022.4×
  96. 96CauquenesMaule Region, Chile
    1022.4×
  97. 97PatiālaPunjab, India
    1012.4×
  98. 98GayaBihar, India
    1012.4×
  99. 99Amnat CharoenAmnat Charoen, Thailand
    1002.4×
  100. 100JaisalmerRajasthan, India
    992.3×
  101. 100KolkataWest Bengal, India
    992.3×
  102. 100BaripādaOdisha, India
    992.3×
  103. 103AmaravatiAndhra Pradesh, India
    992.3×
  104. 104LudhianaPunjab, India
    992.3×
  105. 105SaharsaBihar, India
    982.3×
  106. 105San Francisco De BorjaLima region, Peru
    982.3×
  107. 107TonkRajasthan, India
    972.3×
  108. 108ShrīrāmpurWest Bengal, India
    972.3×
  109. 109DausaRajasthan, India
    972.2×
  110. 110JakartaJakarta, Indonesia
    972.2×
  111. 111SalemTamil Nadu, India
    962.2×
  112. 111ChāndaMaharashtra, India
    962.2×
  113. 113JalorRajasthan, India
    962.2×
  114. 114Ciudad NezahualcoyotlMéxico, Mexico
    962.2×
  115. 114NeelankaraiTamil Nadu, India
    962.2×
  116. 116OsornoLos Lagos Region, Chile
    962.2×
  117. 117JaipurRajasthan, India
    952.2×
  118. 118MahādMaharashtra, India
    952.2×
  119. 119ThrissurKerala, India
    942.2×
  120. 120TambaramTamil Nadu, India
    942.2×
  121. 121UdaipurRajasthan, India
    942.1×
  122. 121Vientianelow-cost sensorsVientiane Prefecture, Laos
    942.1×
  123. 121LimaLima Province, Peru
    942.1×
  124. 124SilcharAssam, India
    932.1×
  125. 125SibsāgarAssam, India
    932.1×
  126. 125ChūruRajasthan, India
    932.1×
  127. 127RatlāmMadhya Pradesh, India
    932.1×
  128. 128HyderabadTelangana, India
    932.1×
  129. 128KannurKerala, India
    932.1×
  130. 130KhannaPunjab, India
    922.1×
  131. 130BhiwandiMaharashtra, India
    922.1×
  132. 130ArāriaBihar, India
    922.1×
  133. 133HāpurUttar Pradesh, India
    912.0×
  134. 134GūduvāncheriTamil Nadu, India
    912.0×
  135. 135TirupparangunramTamil Nadu, India
    902.0×
  136. 135ThanjavurTamil Nadu, India
    902.0×
  137. 135PatancheruTelangana, India
    902.0×
  138. 135QuthbullapurTelangana, India
    902.0×
  139. 139VillarricaAraucania, Chile
    902.0×
  140. 139CuranilahueBiobio, Chile
    902.0×
  141. 141CopiapóAtacama, Chile
    902.0×
  142. 142SamāstipurBihar, India
    892.0×
  143. 143AkolaMaharashtra, India
    892.0×
  144. 144TalaganteSantiago Metropolitan, Chile
    892.0×
  145. 145NanNan, Thailand
    892.0×
  146. 146BuxarBihar, India
    881.9×
  147. 146KalasinKalasin, Thailand
    881.9×
  148. 146Puerto VarasLos Lagos Region, Chile
    881.9×
  149. 149JhunjhunūnRajasthan, India
    881.9×
  150. 149TalcaMaule Region, Chile
    881.9×
  151. 149SerilingampalleTelangana, India
    881.9×
  152. 152ChāpraBihar, India
    881.9×
  153. 153Winterthurlow-cost sensorsZurich, Switzerland
    871.9×
  154. 153TuxtlaChiapas, Mexico
    871.9×
  155. 155ThāneMaharashtra, India
    871.9×
  156. 155NalbāriAssam, India
    871.9×
  157. 155TehuacánPuebla, Mexico
    871.9×
  158. 158SantiagoSantiago Metropolitan, Chile
    871.9×
  159. 158Santiago de QuerétaroQuerétaro, Mexico
    871.9×
  160. 160San Luis de la PazGuanajuato, Mexico
    871.9×
  161. 161DewasMadhya Pradesh, India
    861.9×
  162. 162Puerto MonttLos Lagos Region, Chile
    861.9×
  163. 163Naucalpan de JuárezMéxico, Mexico
    861.8×
  164. 164NagpurMaharashtra, India
    851.8×
  165. 165PāliRajasthan, India
    851.8×
  166. 165AmritsarPunjab, India
    851.8×
  167. 167KadapaAndhra Pradesh, India
    851.8×
  168. 168RajamahendravaramAndhra Pradesh, India
    851.8×
  169. 168DindigulTamil Nadu, India
    851.8×
  170. 168Mexico CityMexico City, Mexico
    851.8×
  171. 171KolhāpurMaharashtra, India
    851.8×
  172. 172SīkarRajasthan, India
    851.8×
  173. 173PrayagrajUttar Pradesh, India
    841.8×
  174. 173Los ÁngelesBiobio, Chile
    841.8×
  175. 175LinaresMaule Region, Chile
    841.8×
  176. 176KhargharMaharashtra, India
    841.8×
  177. 177SiliguriWest Bengal, India
    841.8×
  178. 178MorādābādUttar Pradesh, India
    831.7×
  179. 178San Martin Texmelucan de LabastidaPuebla, Mexico
    831.7×
  180. 180ConcónValparaiso, Chile
    821.7×
  181. 181BhāgalpurBihar, India
    821.7×
  182. 181MukdahanMukdahan, Thailand
    821.7×
  183. 181RengoO'Higgins Region, Chile
    821.7×
  184. 181CoronelBiobio, Chile
    821.7×
  185. 181NavalpattuTamil Nadu, India
    821.7×
  186. 186Mae SaiChiang Rai, Thailand
    821.7×
  187. 187SatnaMadhya Pradesh, India
    811.7×
  188. 188AurangabadMaharashtra, India
    811.7×
  189. 188AricaArica y Parinacota Region, Chile
    811.7×
  190. 188Greater NoidaUttar Pradesh, India
    811.7×
  191. 191BūndiRajasthan, India
    811.7×
  192. 191Samut SakhonSamut Sakhon, Thailand
    811.7×
  193. 193ChillánÑuble, Chile
    811.7×
  194. 193San Luis PotosíSan Luis Potosí, Mexico
    811.7×
  195. 195AmravatiMaharashtra, India
    811.7×
  196. 195AguascalientesAguascalientes, Mexico
    811.7×
  197. 197HualpénBiobio, Chile
    801.7×
  198. 198AriyalūrTamil Nadu, India
    801.6×
  199. 199BhopalMadhya Pradesh, India
    801.6×
  200. 200QuillotaValparaiso, Chile
    801.6×

Top 200 of 2,734 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, May 9, 2025, smogrank.com/history/2025-05-09 (accessed 2 Oct 2026).

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