SmogRank / History / May 19, 2025

Most polluted cities on May 19, 2025

2,475 cities ranked by their average PM2.5 over the day; the worst was Siwān, India, at 223.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 19, 2025. All episodes.

← Siwān 223.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for May 19, 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. 1SiwānBihar, India
    29814.9×
  2. 2HualpénBiobio, Chile
    2119.1×
  3. 3Los ÁngelesBiobio, Chile
    1927.6×
  4. 4KeonjhargarhOdisha, India
    1927.6×
  5. 5CuddaloreTamil Nadu, India
    1877.1×
  6. 6Aya NagarDelhi, India
    1796.3×
  7. 7NacimientoBiobio, Chile
    1786.2×
  8. 8VillarricaAraucania, Chile
    1745.9×
  9. 9BawānaDelhi, India
    1725.7×
  10. 10NarelaDelhi, India
    1715.6×
  11. 11TirupatiAndhra Pradesh, India
    1715.6×
  12. 12MuzaffarnagarUttar Pradesh, India
    1705.5×
  13. 13Dera MāndiDelhi, India
    1695.4×
  14. 14GobindgarhPunjab, India
    1675.2×
  15. 15DushanbeDushanbe, Tajikistan
    1665.1×
  16. 16DelhiDelhi, India
    1655.0×
  17. 17OsornoLos Lagos Region, Chile
    1655.0×
  18. 18TalcahuanoBiobio, Chile
    1655.0×
  19. 19RishīkeshUttarakhand, India
    1634.9×
  20. 20CuranilahueBiobio, Chile
    1634.8×
  21. 21JalandharPunjab, India
    1624.8×
  22. 22Santa Anita - Los FicusLima region, Peru
    1624.8×
  23. 23NajafgarhDelhi, India
    1624.8×
  24. 24PatiālaPunjab, India
    1624.7×
  25. 25BaddiHimachal Pradesh, India
    1614.7×
  26. 26LoniUttar Pradesh, India
    1574.3×
  27. 27NagpurMaharashtra, India
    1564.2×
  28. 27Puerto AysénAysén, Chile
    1564.2×
  29. 29LudhianaPunjab, India
    1564.1×
  30. 30KarauliRajasthan, India
    1554.1×
  31. 31LucknowUttar Pradesh, India
    1544.0×
  32. 31GorakhpurUttar Pradesh, India
    1544.0×
  33. 33HanumāngarhRajasthan, India
    1544.0×
  34. 34VelloreTamil Nadu, India
    1543.9×
  35. 35AmritsarPunjab, India
    1523.8×
  36. 36RājgīrBihar, India
    1523.8×
  37. 37NoidaUttar Pradesh, India
    1523.8×
  38. 38TemucoAraucania, Chile
    1513.7×
  39. 39Dubailow-cost sensorsDubai, United Arab Emirates
    1503.7×
  40. 40San CarlosÑuble, Chile
    1493.7×
  41. 41GhāziābādUttar Pradesh, India
    1483.6×
  42. 42Puerto MonttLos Lagos Region, Chile
    1453.6×
  43. 43SangāreddiTelangana, India
    1433.5×
  44. 44BhiwadiRajasthan, India
    1423.5×
  45. 45KhannaPunjab, India
    1403.4×
  46. 46ChillánÑuble, Chile
    1393.4×
  47. 47CoyhaiqueAysén, Chile
    1373.4×
  48. 48KhurjaUttar Pradesh, India
    1353.3×
  49. 49CoronelBiobio, Chile
    1333.2×
  50. 50Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1323.2×
  51. 51GayaBihar, India
    1313.2×
  52. 52MohaliPunjab, India
    1303.2×
  53. 53JalgaonMaharashtra, India
    1293.1×
  54. 54ManamaManama, Bahrain
    1283.1×
  55. 55PithampurMadhya Pradesh, India
    1283.1×
  56. 56AnantapurAndhra Pradesh, India
    1273.1×
  57. 57AhmedabadGujarat, India
    1253.0×
  58. 58BhiwandiMaharashtra, India
    1233.0×
  59. 59CallaoCallao, Peru
    1233.0×
  60. 60DehradunUttarakhand, India
    1222.9×
  61. 60DādriUttar Pradesh, India
    1222.9×
  62. 62GandhinagarGujarat, India
    1212.9×
  63. 63GwaliorMadhya Pradesh, India
    1212.9×
  64. 64RatlāmMadhya Pradesh, India
    1202.9×
  65. 65SantiagoSantiago Metropolitan, Chile
    1202.9×
  66. 65ChiguayanteBiobio, Chile
    1202.9×
  67. 67BulandshahrUttar Pradesh, India
    1192.9×
  68. 68KanchipuramTamil Nadu, India
    1182.8×
  69. 69KalyānMaharashtra, India
    1182.8×
  70. 70KanpurUttar Pradesh, India
    1172.8×
  71. 71BadlapurMaharashtra, India
    1162.8×
  72. 72LinaresMaule Region, Chile
    1162.8×
  73. 73AjmerRajasthan, India
    1152.8×
  74. 74PāliRajasthan, India
    1152.7×
  75. 74BharatpurRajasthan, India
    1152.7×
  76. 76LimaLima Province, Peru
    1142.7×
  77. 77BhelaiChhattisgarh, India
    1132.7×
  78. 78AgraUttar Pradesh, India
    1132.7×
  79. 78San Pedro de la PazBiobio, Chile
    1132.7×
  80. 80KolhāpurMaharashtra, India
    1122.7×
  81. 81ToméBiobio, Chile
    1122.7×
  82. 82KigaliKigali, Rwanda
    1102.6×
  83. 83La UniónLos Ríos Region, Chile
    1102.6×
  84. 84JakartaJakarta, Indonesia
    1092.6×
  85. 84CholulaPuebla, Mexico
    1092.6×
  86. 86TiruchirappalliTamil Nadu, India
    1082.6×
  87. 87ValdiviaLos Ríos Region, Chile
    1082.6×
  88. 88TalaganteSantiago Metropolitan, Chile
    1072.5×
  89. 89Puente AltoSantiago Metropolitan, Chile
    1062.5×
  90. 90UdaipurRajasthan, India
    1062.5×
  91. 90ChittorgarhRajasthan, India
    1062.5×
  92. 90HualquiBiobio, Chile
    1062.5×
  93. 93Islamabadlow-cost sensorsIslamabad, Pakistan
    1052.5×
  94. 94TonkRajasthan, India
    1042.5×
  95. 95Sawai MadhopurRajasthan, India
    1042.4×
  96. 96MeerutUttar Pradesh, India
    1042.4×
  97. 96MandideepMadhya Pradesh, India
    1042.4×
  98. 98MahādMaharashtra, India
    1032.4×
  99. 99ConcepciónBiobio, Chile
    1032.4×
  100. 100FīrozābādUttar Pradesh, India
    1022.4×
  101. 100AurangabadMaharashtra, India
    1022.4×
  102. 102GarcíaNuevo León, Mexico
    1002.3×
  103. 103Ciudad Benito JuárezNuevo León, Mexico
    992.3×
  104. 104KhargharMaharashtra, India
    992.3×
  105. 105PanvelMaharashtra, India
    992.3×
  106. 106BānswāraRajasthan, India
    982.3×
  107. 107PatancheruTelangana, India
    982.3×
  108. 107BathindaPunjab, India
    982.3×
  109. 109CauquenesMaule Region, Chile
    972.3×
  110. 110Hacienda Santa FeJalisco, Mexico
    972.3×
  111. 111RourkelaOdisha, India
    962.2×
  112. 111PrayagrajUttar Pradesh, India
    962.2×
  113. 111Amnat CharoenAmnat Charoen, Thailand
    962.2×
  114. 114JhānsiUttar Pradesh, India
    962.2×
  115. 114Santa CatarinaNuevo León, Mexico
    962.2×
  116. 116PatnaBihar, India
    962.2×
  117. 117San Francisco De BorjaLima region, Peru
    952.2×
  118. 118Greater NoidaUttar Pradesh, India
    952.2×
  119. 119YasothonYasothon, Thailand
    942.2×
  120. 120Ciudad NezahualcoyotlMéxico, Mexico
    942.1×
  121. 121Pimpri-ChinchwadMaharashtra, India
    932.1×
  122. 122KollamKerala, India
    932.1×
  123. 123VrindāvanUttar Pradesh, India
    932.1×
  124. 123KurayoshiTottori, Japan
    932.1×
  125. 123AtlixcoPuebla, Mexico
    932.1×
  126. 126MangaluruKarnataka, India
    922.1×
  127. 126TalcaMaule Region, Chile
    922.1×
  128. 128AmravatiMaharashtra, India
    912.0×
  129. 129HāpurUttar Pradesh, India
    902.0×
  130. 130BhopalMadhya Pradesh, India
    902.0×
  131. 131SāngliMaharashtra, India
    892.0×
  132. 131CuricóMaule Region, Chile
    892.0×
  133. 131SerilingampalleTelangana, India
    892.0×
  134. 134TehuacánPuebla, Mexico
    892.0×
  135. 134EdinburgTexas, United States
    892.0×
  136. 136ThrissurKerala, India
    892.0×
  137. 137JabalpurMadhya Pradesh, India
    881.9×
  138. 137AurangābādBihar, India
    881.9×
  139. 139MonterreyNuevo León, Mexico
    881.9×
  140. 141MalegaonMaharashtra, India
    881.9×
  141. 142HājīpurBihar, India
    881.9×
  142. 143HyderabadTelangana, India
    871.9×
  143. 144Naucalpan de JuárezMéxico, Mexico
    871.9×
  144. 145NashikMaharashtra, India
    871.9×
  145. 145Mixquiahuala de JuárezHidalgo, Mexico
    871.9×
  146. 147DhaulpurRajasthan, India
    861.9×
  147. 147AlwarRajasthan, India
    861.9×
  148. 149Sri GanganagarRajasthan, India
    861.9×
  149. 149DausaRajasthan, India
    861.9×
  150. 151Mexico CityMexico City, Mexico
    851.8×
  151. 151San Luis de la PazGuanajuato, Mexico
    851.8×
  152. 151Sunland ParkNew Mexico, United States
    851.8×
  153. 151AlangadKerala, India
    851.8×
  154. 155BārānRajasthan, India
    851.8×
  155. 155Villa Poeta José Gálvez BarrenecheaLima region, Peru
    851.8×
  156. 157VijayawadaAndhra Pradesh, India
    851.8×
  157. 157Cadereyta JiménezNuevo León, Mexico
    851.8×
  158. 157AmīnpurTelangana, India
    851.8×
  159. 157Wadgaon KolhatiMaharashtra, India
    851.8×
  160. 161FilderstadtBaden-Wurttemberg, Germany
    841.8×
  161. 162BilāspurChhattisgarh, India
    841.8×
  162. 162Sing BuriSing Buri, Thailand
    841.8×
  163. 162Ciudad General EscobedoNuevo León, Mexico
    841.8×
  164. 165AugustówPodlasie, Poland
    841.8×
  165. 165TlaxcalaTlaxcala, Mexico
    841.8×
  166. 167TirumalaAndhra Pradesh, India
    841.8×
  167. 168DūngarpurRajasthan, India
    831.8×
  168. 168DamohMadhya Pradesh, India
    831.8×
  169. 168TulancingoHidalgo, Mexico
    831.8×
  170. 168MissionTexas, United States
    831.8×
  171. 172ConcónValparaiso, Chile
    831.8×
  172. 173ChennaiTamil Nadu, India
    831.7×
  173. 174SaugorMadhya Pradesh, India
    831.7×
  174. 175Addis AbabaAddis Ababa, Ethiopia
    821.7×
  175. 175San Martin Texmelucan de LabastidaPuebla, Mexico
    821.7×
  176. 177Ban ChangRayong, Thailand
    821.7×
  177. 178GumiGyeongsangbuk-do, South Korea
    821.7×
  178. 178RengoO'Higgins Region, Chile
    821.7×
  179. 178QuinteroValparaiso, Chile
    821.7×
  180. 181SilcharAssam, India
    811.7×
  181. 181ShenyangLiaoning, China
    811.7×
  182. 183ThāneMaharashtra, India
    811.7×
  183. 184RājsamandRajasthan, India
    811.7×
  184. 185KotaRajasthan, India
    811.7×
  185. 185Ciudad JuárezChihuahua, Mexico
    811.7×
  186. 187TambaramTamil Nadu, India
    801.7×
  187. 187JaipurRajasthan, India
    801.7×
  188. 189AkolaMaharashtra, India
    801.6×
  189. 190SalamancaGuanajuato, Mexico
    801.6×
  190. 191QuilpuéValparaiso, Chile
    801.6×
  191. 192CoquimboCoquimbo Region, Chile
    801.6×
  192. 192CopiapóAtacama, Chile
    801.6×
  193. 194PueblaPuebla, Mexico
    791.6×
  194. 195Istanbullow-cost sensorsIstanbul, Turkey
    791.6×
  195. 195KanchanaburiKanchanaburi, Thailand
    791.6×
  196. 197NakatsuOita, Japan
    791.6×
  197. 197Brownsvillelow-cost sensorsTexas, United States
    791.6×
  198. 199LaturMaharashtra, India
    791.6×
  199. 199GummidipundiTamil Nadu, India
    791.6×

Top 200 of 2,475 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 19, 2025, smogrank.com/history/2025-05-19 (accessed 2 Oct 2026).

Download top 10 (PNG)

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