SmogRank / History / May 4, 2025

Most polluted cities on May 4, 2025

1,840 cities ranked by their average PM2.5 over the day; the worst was Gobindgarh, India, at 235.0 µg/m³. Each city's own local calendar day.

← Gobindgarh 235.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for May 4, 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. 1GobindgarhPunjab, India
    32015.7×
  2. 2KoppalKarnataka, India
    25411.9×
  3. 3Puerto VarasLos Lagos Region, Chile
    23910.9×
  4. 4BawānaDelhi, India
    2038.5×
  5. 5NarelaDelhi, India
    1937.7×
  6. 6LoniUttar Pradesh, India
    1856.9×
  7. 7NajafgarhDelhi, India
    1796.4×
  8. 8DelhiDelhi, India
    1776.1×
  9. 9BathindaPunjab, India
    1695.4×
  10. 10Dera MāndiDelhi, India
    1675.2×
  11. 11GhāziābādUttar Pradesh, India
    1675.2×
  12. 12VillarricaAraucania, Chile
    1665.1×
  13. 13LucknowUttar Pradesh, India
    1665.1×
  14. 13NavalpattuTamil Nadu, India
    1665.1×
  15. 15CoyhaiqueAysén, Chile
    1655.1×
  16. 16Sri GanganagarRajasthan, India
    1655.0×
  17. 17OsornoLos Lagos Region, Chile
    1634.8×
  18. 18LinaresMaule Region, Chile
    1614.6×
  19. 18NoidaUttar Pradesh, India
    1614.6×
  20. 20BulandshahrUttar Pradesh, India
    1564.2×
  21. 21GandhinagarGujarat, India
    1554.1×
  22. 22CuricóMaule Region, Chile
    1554.0×
  23. 23TalcaMaule Region, Chile
    1533.9×
  24. 24BhiwadiRajasthan, India
    1533.9×
  25. 25MuzaffarnagarUttar Pradesh, India
    1533.8×
  26. 26LudhianaPunjab, India
    1523.8×
  27. 27DādriUttar Pradesh, India
    1513.7×
  28. 28HanumāngarhRajasthan, India
    1513.7×
  29. 29SasarāmBihar, India
    1483.6×
  30. 30Vientianelow-cost sensorsVientiane Prefecture, Laos
    1453.6×
  31. 31PatiālaPunjab, India
    1433.5×
  32. 32NacimientoBiobio, Chile
    1403.4×
  33. 33LaturMaharashtra, India
    1383.4×
  34. 34TiruchirappalliTamil Nadu, India
    1383.4×
  35. 35RourkelaOdisha, India
    1383.4×
  36. 36PatnaBihar, India
    1373.3×
  37. 37ValdiviaLos Ríos Region, Chile
    1343.3×
  38. 38HājīpurBihar, India
    1333.2×
  39. 39Dera Colliery TownshipOdisha, India
    1323.2×
  40. 40La UniónLos Ríos Region, Chile
    1313.2×
  41. 41AhmedabadGujarat, India
    1273.1×
  42. 42ManamaManama, Bahrain
    1263.1×
  43. 43KhurjaUttar Pradesh, India
    1263.0×
  44. 43TamanaKumamoto, Japan
    1263.0×
  45. 45RājgīrBihar, India
    1253.0×
  46. 46HualquiBiobio, Chile
    1243.0×
  47. 46CuranilahueBiobio, Chile
    1243.0×
  48. 48PithampurMadhya Pradesh, India
    1243.0×
  49. 49KigaliKigali, Rwanda
    1243.0×
  50. 50MalegaonMaharashtra, India
    1233.0×
  51. 51ShillongMeghalaya, India
    1222.9×
  52. 52TalaganteSantiago Metropolitan, Chile
    1182.8×
  53. 53SerilingampalleTelangana, India
    1172.8×
  54. 54VijayawadaAndhra Pradesh, India
    1162.8×
  55. 55Puerto AysénAysén, Chile
    1162.8×
  56. 56AjmerRajasthan, India
    1152.8×
  57. 56Puerto MonttLos Lagos Region, Chile
    1152.8×
  58. 58ChandigarhChandigarh, India
    1152.7×
  59. 59TemucoAraucania, Chile
    1152.7×
  60. 60NagaonAssam, India
    1132.7×
  61. 61SīkarRajasthan, India
    1132.7×
  62. 62CholulaPuebla, Mexico
    1122.7×
  63. 62SantiagoSantiago Metropolitan, Chile
    1122.7×
  64. 64SingrauliMadhya Pradesh, India
    1112.6×
  65. 65SholapurMaharashtra, India
    1112.6×
  66. 66KanpurUttar Pradesh, India
    1092.6×
  67. 66GuwahatiAssam, India
    1092.6×
  68. 66AngulOdisha, India
    1092.6×
  69. 69NagpurMaharashtra, India
    1092.6×
  70. 69JakartaJakarta, Indonesia
    1092.6×
  71. 71MothīhāriBihar, India
    1092.6×
  72. 72PatancheruTelangana, India
    1082.6×
  73. 73BuxarBihar, India
    1072.5×
  74. 74IrapuatoGuanajuato, Mexico
    1062.5×
  75. 75RasapūdipalemAndhra Pradesh, India
    1062.5×
  76. 76BikanerRajasthan, India
    1052.5×
  77. 77Dubailow-cost sensorsDubai, United Arab Emirates
    1042.5×
  78. 77UdaipurRajasthan, India
    1042.5×
  79. 77Puente AltoSantiago Metropolitan, Chile
    1042.5×
  80. 80JalgaonMaharashtra, India
    1042.4×
  81. 80ChūruRajasthan, India
    1042.4×
  82. 82BhelaiChhattisgarh, India
    1022.4×
  83. 83CoronelBiobio, Chile
    1022.4×
  84. 84Victoria de DurangoDurango, Mexico
    1022.4×
  85. 85TirumalaAndhra Pradesh, India
    1002.4×
  86. 86DhuleMaharashtra, India
    1002.4×
  87. 86JodaOdisha, India
    1002.4×
  88. 88KeonjhargarhOdisha, India
    1002.3×
  89. 88San CarlosÑuble, Chile
    1002.3×
  90. 90Tepeji del Río de OcampoHidalgo, Mexico
    992.3×
  91. 90Mixquiahuala de JuárezHidalgo, Mexico
    992.3×
  92. 90ConcónValparaiso, Chile
    992.3×
  93. 93PurniaBihar, India
    982.3×
  94. 94MangaluruKarnataka, India
    982.3×
  95. 95DushanbeDushanbe, Tajikistan
    972.3×
  96. 96ThrissurKerala, India
    972.2×
  97. 97ĀsansolWest Bengal, India
    962.2×
  98. 97QuillotaValparaiso, Chile
    962.2×
  99. 99MohaliPunjab, India
    962.2×
  100. 100KhannaPunjab, India
    962.2×
  101. 101YadgirKarnataka, India
    952.2×
  102. 102JalandharPunjab, India
    952.2×
  103. 102BāghpatUttar Pradesh, India
    952.2×
  104. 104HāpurUttar Pradesh, India
    942.2×
  105. 105MeerutUttar Pradesh, India
    942.2×
  106. 106RānīganjWest Bengal, India
    942.1×
  107. 106Los ÁngelesBiobio, Chile
    942.1×
  108. 108AmravatiMaharashtra, India
    942.1×
  109. 109RatlāmMadhya Pradesh, India
    932.1×
  110. 109JaisalmerRajasthan, India
    932.1×
  111. 109CoquimboCoquimbo Region, Chile
    932.1×
  112. 112AurangabadMaharashtra, India
    932.1×
  113. 113QuthbullapurTelangana, India
    932.1×
  114. 114SiliguriWest Bengal, India
    932.1×
  115. 114HualpénBiobio, Chile
    932.1×
  116. 116Islamabadlow-cost sensorsIslamabad, Pakistan
    932.1×
  117. 117Greater NoidaUttar Pradesh, India
    922.1×
  118. 118Naucalpan de JuárezMéxico, Mexico
    922.1×
  119. 118RancaguaO'Higgins Region, Chile
    922.1×
  120. 120KannurKerala, India
    912.1×
  121. 121CuttackOdisha, India
    912.0×
  122. 121AtlixcoPuebla, Mexico
    912.0×
  123. 123BarbilOdisha, India
    912.0×
  124. 124RengoO'Higgins Region, Chile
    902.0×
  125. 125KotaRajasthan, India
    902.0×
  126. 126QuinteroValparaiso, Chile
    902.0×
  127. 126QuilpuéValparaiso, Chile
    902.0×
  128. 128AkolaMaharashtra, India
    902.0×
  129. 129TonkRajasthan, India
    902.0×
  130. 130San Martin Texmelucan de LabastidaPuebla, Mexico
    902.0×
  131. 131PrayagrajUttar Pradesh, India
    892.0×
  132. 132ChāpraBihar, India
    892.0×
  133. 133HyderabadTelangana, India
    892.0×
  134. 133BadlapurMaharashtra, India
    892.0×
  135. 135MahādMaharashtra, India
    881.9×
  136. 136ArāriaBihar, India
    881.9×
  137. 137SāngliMaharashtra, India
    881.9×
  138. 137BhiwandiMaharashtra, India
    881.9×
  139. 139BegusaraiBihar, India
    881.9×
  140. 140BārmerRajasthan, India
    871.9×
  141. 141SalemTamil Nadu, India
    871.9×
  142. 142NashikMaharashtra, India
    871.9×
  143. 142BūndiRajasthan, India
    871.9×
  144. 144SilcharAssam, India
    871.9×
  145. 144ChillánÑuble, Chile
    871.9×
  146. 146SatnaMadhya Pradesh, India
    861.9×
  147. 146PueblaPuebla, Mexico
    861.9×
  148. 146AlangadKerala, India
    861.9×
  149. 149SangāreddiTelangana, India
    861.9×
  150. 150MuzaffarpurBihar, India
    861.9×
  151. 150KalyānMaharashtra, India
    861.9×
  152. 150DehradunUttarakhand, India
    861.9×
  153. 153Mexico CityMexico City, Mexico
    861.8×
  154. 154AgraUttar Pradesh, India
    851.8×
  155. 154La SerenaCoquimbo Region, Chile
    851.8×
  156. 156San Juan del RíoQuerétaro, Mexico
    851.8×
  157. 157PāliRajasthan, India
    841.8×
  158. 158DindigulTamil Nadu, India
    841.8×
  159. 158KolkataWest Bengal, India
    841.8×
  160. 158TlaxcalaTlaxcala, Mexico
    841.8×
  161. 161Viña del MarValparaiso, Chile
    831.8×
  162. 162ThanjavurTamil Nadu, India
    831.8×
  163. 162ChennaiTamil Nadu, India
    831.8×
  164. 162GayaBihar, India
    831.8×
  165. 165PuneMaharashtra, India
    831.7×
  166. 166IndoreMadhya Pradesh, India
    821.7×
  167. 167MorādābādUttar Pradesh, India
    821.7×
  168. 167AnkleshwarGujarat, India
    821.7×
  169. 167CelayaGuanajuato, Mexico
    821.7×
  170. 170Santiago de QuerétaroQuerétaro, Mexico
    821.7×
  171. 171Chik BallāpurKarnataka, India
    821.7×
  172. 171TehuacánPuebla, Mexico
    821.7×
  173. 173Wadgaon KolhatiMaharashtra, India
    811.7×
  174. 174JhunjhunūnRajasthan, India
    811.7×
  175. 175DurgapurWest Bengal, India
    811.7×
  176. 176PanvelMaharashtra, India
    811.7×
  177. 177NalbāriAssam, India
    811.7×
  178. 178TulancingoHidalgo, Mexico
    801.7×
  179. 179Silao de la VictoriaGuanajuato, Mexico
    801.7×
  180. 180San Miguel de AllendeGuanajuato, Mexico
    801.6×
  181. 181BengaluruKarnataka, India
    801.6×
  182. 181BrawleyCalifornia, United States
    801.6×
  183. 183Addis AbabaAddis Ababa, Ethiopia
    791.6×
  184. 184Ciudad JuárezChihuahua, Mexico
    791.6×
  185. 184Chrang Chamreh Muoylow-cost sensorsPhnom Penh, Cambodia
    791.6×
  186. 184UliyazhathuraKerala, India
    791.6×
  187. 187JaipurRajasthan, India
    791.6×
  188. 188Pachuca de SotoHidalgo, Mexico
    781.6×
  189. 188ToméBiobio, Chile
    781.6×
  190. 188León de los AldamaGuanajuato, Mexico
    781.6×
  191. 191DausaRajasthan, India
    781.6×
  192. 192RairangpurOdisha, India
    781.6×
  193. 192CauquenesMaule Region, Chile
    781.6×
  194. 194TambaramTamil Nadu, India
    781.6×
  195. 195MungerBihar, India
    771.6×
  196. 195CopiapóAtacama, Chile
    771.6×
  197. 197Hacienda Santa FeJalisco, Mexico
    771.5×
  198. 198AmīnpurTelangana, India
    771.5×
  199. 199Istanbullow-cost sensorsIstanbul, Turkey
    771.5×
  200. 199KolhāpurMaharashtra, India
    771.5×

Top 200 of 1,840 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 4, 2025, smogrank.com/history/2025-05-04 (accessed 3 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.