SmogRank / History / April 6, 2025

Most polluted cities on April 6, 2025

2,699 cities ranked by their average PM2.5 over the day; the worst was Loni, India, at 198.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during April 6, 2025. All episodes.

← Loni 198.0 µg/m³ 150 µg/m³15 WHO 24-hour guideline
Every city ranked for April 6, 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. 1LoniUttar Pradesh, India
    27313.2×
  2. 2BawānaDelhi, India
    22910.3×
  3. 3NarelaDelhi, India
    1967.9×
  4. 4CoyhaiqueAysén, Chile
    1937.7×
  5. 6JhānsiUttar Pradesh, India
    1826.6×
  6. 7GhāziābādUttar Pradesh, India
    1816.6×
  7. 8BhelaiChhattisgarh, India
    1816.5×
  8. 9HājīpurBihar, India
    1806.4×
  9. 10AurangābādBihar, India
    1745.9×
  10. 11SasarāmBihar, India
    1745.9×
  11. 12DewasMadhya Pradesh, India
    1735.8×
  12. 13BegusaraiBihar, India
    1715.6×
  13. 14DelhiDelhi, India
    1715.6×
  14. 15BulandshahrUttar Pradesh, India
    1715.6×
  15. 16Mae SaiChiang Rai, Thailand
    1715.6×
  16. 17SiliguriWest Bengal, India
    1705.5×
  17. 18PurniaBihar, India
    1665.2×
  18. 19BāghpatUttar Pradesh, India
    1665.1×
  19. 20PāliRajasthan, India
    1665.1×
  20. 21SingrauliMadhya Pradesh, India
    1655.0×
  21. 22PatnaBihar, India
    1644.9×
  22. 23GangtokSikkim, India
    1644.9×
  23. 24MuzaffarpurBihar, India
    1634.9×
  24. 24MandideepMadhya Pradesh, India
    1634.9×
  25. 26Sri GanganagarRajasthan, India
    1634.8×
  26. 27SāngliMaharashtra, India
    1624.7×
  27. 28Dera MāndiDelhi, India
    1604.6×
  28. 28ĀsansolWest Bengal, India
    1604.6×
  29. 30Chiang RaiChiang Rai, Thailand
    1604.5×
  30. 31MahādMaharashtra, India
    1604.5×
  31. 32VapiGujarat, India
    1604.5×
  32. 33NagpurMaharashtra, India
    1594.5×
  33. 33BuxarBihar, India
    1594.5×
  34. 35MeerutUttar Pradesh, India
    1594.5×
  35. 35JhālāwārRajasthan, India
    1594.5×
  36. 35GobindgarhPunjab, India
    1594.5×
  37. 38KhargharMaharashtra, India
    1594.5×
  38. 39NajafgarhDelhi, India
    1594.5×
  39. 40AngulOdisha, India
    1594.4×
  40. 41Sawai MadhopurRajasthan, India
    1594.4×
  41. 41YasothonYasothon, Thailand
    1594.4×
  42. 43Ubon RatchathaniUbon Ratchathani, Thailand
    1584.4×
  43. 45GwaliorMadhya Pradesh, India
    1574.3×
  44. 46AjmerRajasthan, India
    1574.2×
  45. 47NanNan, Thailand
    1564.2×
  46. 48MalegaonMaharashtra, India
    1564.2×
  47. 49RājgīrBihar, India
    1564.1×
  48. 50AgraUttar Pradesh, India
    1564.1×
  49. 51MungerBihar, India
    1554.1×
  50. 52JalandharPunjab, India
    1554.1×
  51. 53NalbāriAssam, India
    1554.1×
  52. 54Dera Colliery TownshipOdisha, India
    1554.0×
  53. 55MuzaffarnagarUttar Pradesh, India
    1544.0×
  54. 56KohimaNagaland, India
    1544.0×
  55. 57RoparPunjab, India
    1533.9×
  56. 57NoidaUttar Pradesh, India
    1533.9×
  57. 59BhāgalpurBihar, India
    1533.9×
  58. 60ChāndaMaharashtra, India
    1533.9×
  59. 61BettiahBihar, India
    1533.9×
  60. 62LudhianaPunjab, India
    1523.8×
  61. 63LucknowUttar Pradesh, India
    1523.8×
  62. 64GuwahatiAssam, India
    1523.8×
  63. 65Islamabadlow-cost sensorsIslamabad, Pakistan
    1513.7×
  64. 66GandhinagarGujarat, India
    1513.7×
  65. 67GayaBihar, India
    1513.7×
  66. 68SaharsaBihar, India
    1503.7×
  67. 69JaipurRajasthan, India
    1473.6×
  68. 70LaturMaharashtra, India
    1473.6×
  69. 71HāpurUttar Pradesh, India
    1463.6×
  70. 72PithampurMadhya Pradesh, India
    1453.6×
  71. 73JodhpurRajasthan, India
    1453.5×
  72. 74Khon KaenKhon Kaen, Thailand
    1433.5×
  73. 74Puerto MonttLos Lagos Region, Chile
    1433.5×
  74. 76ChittorgarhRajasthan, India
    1423.5×
  75. 76HanoiHanoi, Vietnam
    1423.5×
  76. 76KalasinKalasin, Thailand
    1423.5×
  77. 79Pimpri-ChinchwadMaharashtra, India
    1423.5×
  78. 80TirupatiAndhra Pradesh, India
    1413.4×
  79. 80BadlapurMaharashtra, India
    1413.4×
  80. 82BhiwandiMaharashtra, India
    1413.4×
  81. 82AnantapurAndhra Pradesh, India
    1413.4×
  82. 84Amnat CharoenAmnat Charoen, Thailand
    1403.4×
  83. 85HanumāngarhRajasthan, India
    1403.4×
  84. 86PhayaoPhayao, Thailand
    1393.4×
  85. 87TonkRajasthan, India
    1373.3×
  86. 87SangāreddiTelangana, India
    1373.3×
  87. 87KhannaPunjab, India
    1373.3×
  88. 90ChandigarhChandigarh, India
    1373.3×
  89. 90OsornoLos Lagos Region, Chile
    1373.3×
  90. 92BhiwadiRajasthan, India
    1353.3×
  91. 93Roi EtRoi Et, Thailand
    1353.3×
  92. 94Vientianelow-cost sensorsVientiane Prefecture, Laos
    1343.3×
  93. 95KalyānMaharashtra, India
    1343.3×
  94. 96Wadgaon KolhatiMaharashtra, India
    1343.2×
  95. 97NāgaurRajasthan, India
    1333.2×
  96. 98RānīganjWest Bengal, India
    1323.2×
  97. 98DehradunUttarakhand, India
    1323.2×
  98. 98BoisarMaharashtra, India
    1323.2×
  99. 101PatancheruTelangana, India
    1293.1×
  100. 101AhmedabadGujarat, India
    1293.1×
  101. 103DausaRajasthan, India
    1293.1×
  102. 103BaddiHimachal Pradesh, India
    1293.1×
  103. 105IndoreMadhya Pradesh, India
    1283.1×
  104. 106KeonjhargarhOdisha, India
    1273.1×
  105. 107PanvelMaharashtra, India
    1273.1×
  106. 107MukdahanMukdahan, Thailand
    1273.1×
  107. 109SīkarRajasthan, India
    1273.1×
  108. 109BharatpurRajasthan, India
    1273.1×
  109. 111BaripādaOdisha, India
    1263.0×
  110. 111Puerto VarasLos Lagos Region, Chile
    1263.0×
  111. 113GuangzhouGuangdong, China
    1243.0×
  112. 114KanpurUttar Pradesh, India
    1243.0×
  113. 115KotaRajasthan, India
    1233.0×
  114. 116SholapurMaharashtra, India
    1233.0×
  115. 117AkolaMaharashtra, India
    1233.0×
  116. 118ShillongMeghalaya, India
    1222.9×
  117. 119BelpaharOdisha, India
    1222.9×
  118. 120NashikMaharashtra, India
    1212.9×
  119. 121RishīkeshUttarakhand, India
    1182.8×
  120. 122ThāneMaharashtra, India
    1182.8×
  121. 123PatiālaPunjab, India
    1172.8×
  122. 123AurangabadMaharashtra, India
    1172.8×
  123. 125SerilingampalleTelangana, India
    1172.8×
  124. 126GorakhpurUttar Pradesh, India
    1172.8×
  125. 127ArāriaBihar, India
    1172.8×
  126. 128DurgapurWest Bengal, India
    1162.8×
  127. 129Maha SarakhamMaha Sarakham, Thailand
    1152.7×
  128. 130UdaipurRajasthan, India
    1142.7×
  129. 131SamāstipurBihar, India
    1142.7×
  130. 132VaranasiUttar Pradesh, India
    1122.7×
  131. 132PuneMaharashtra, India
    1122.7×
  132. 132AnkleshwarGujarat, India
    1122.7×
  133. 135BikanerRajasthan, India
    1122.7×
  134. 136PrayagrajUttar Pradesh, India
    1112.6×
  135. 137FīrozābādUttar Pradesh, India
    1112.6×
  136. 138VijayawadaAndhra Pradesh, India
    1092.6×
  137. 138VillarricaAraucania, Chile
    1092.6×
  138. 140RatlāmMadhya Pradesh, India
    1092.6×
  139. 140Nong Bua LamphuNong Bua Lamphu, Thailand
    1092.6×
  140. 142Puerto AysénAysén, Chile
    1092.6×
  141. 143KhurjaUttar Pradesh, India
    1082.6×
  142. 144Udon ThaniUdon Thani, Thailand
    1082.6×
  143. 145Chiang MaiChiang Mai, Thailand
    1082.6×
  144. 146MorādābādUttar Pradesh, India
    1072.5×
  145. 147UjjainMadhya Pradesh, India
    1062.5×
  146. 148Sakon NakhonSakon Nakhon, Thailand
    1062.5×
  147. 148ShenyangLiaoning, China
    1062.5×
  148. 150SrinagarJammu and Kashmir, India
    1052.5×
  149. 151JinchengFukien, Taiwan
    1042.5×
  150. 152Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1042.4×
  151. 153BānswāraRajasthan, India
    1042.4×
  152. 153LoeiLoei, Thailand
    1042.4×
  153. 155BhilwaraRajasthan, India
    1032.4×
  154. 155TlaquepaqueJalisco, Mexico
    1032.4×
  155. 157AmritsarPunjab, India
    1022.4×
  156. 157ByasanagarOdisha, India
    1022.4×
  157. 159NandedMaharashtra, India
    1022.4×
  158. 159BūndiRajasthan, India
    1022.4×
  159. 161OotyTamil Nadu, India
    1012.4×
  160. 162RajākheriMadhya Pradesh, India
    1012.4×
  161. 163Greater NoidaUttar Pradesh, India
    1002.4×
  162. 164BhilaiChhattisgarh, India
    1002.4×
  163. 165LamphunLamphun, Thailand
    1002.3×
  164. 165PhichitPhichit, Thailand
    1002.3×
  165. 165Chai NatChai Nat, Thailand
    1002.3×
  166. 165QuthbullapurTelangana, India
    1002.3×
  167. 169NandriRajasthan, India
    992.3×
  168. 170JhunjhunūnRajasthan, India
    992.3×
  169. 171Victoria de DurangoDurango, Mexico
    992.3×
  170. 172Sing BuriSing Buri, Thailand
    982.3×
  171. 173JabalpurMadhya Pradesh, India
    972.3×
  172. 173BhubaneswarOdisha, India
    972.3×
  173. 173BareillyUttar Pradesh, India
    972.3×
  174. 176PhraePhrae, Thailand
    972.2×
  175. 177ParbhaniMaharashtra, India
    972.2×
  176. 178Nakhon SawanNakhon Sawan, Thailand
    962.2×
  177. 179ChūruRajasthan, India
    962.2×
  178. 180UttaraditUttaradit, Thailand
    962.2×
  179. 181NacimientoBiobio, Chile
    952.2×
  180. 182HyderabadTelangana, India
    942.2×
  181. 182KadapaAndhra Pradesh, India
    942.2×
  182. 184MumbaiMaharashtra, India
    942.1×
  183. 185ChaozhouTaiwan, Taiwan
    942.1×
  184. 186Wan ChaiWan Chai, Hong Kong
    942.1×
  185. 186Tuen MunTuen Mun, Hong Kong
    942.1×
  186. 188KannurKerala, India
    932.1×
  187. 189JalorRajasthan, India
    932.1×
  188. 190KolkataWest Bengal, India
    932.1×
  189. 191AlwarRajasthan, India
    922.1×
  190. 192CholulaPuebla, Mexico
    922.1×
  191. 193GummidipundiTamil Nadu, India
    912.1×
  192. 193Nakhon RatchasimaNakhon Ratchasima, Thailand
    912.1×
  193. 195JodaOdisha, India
    912.0×
  194. 196PratāpgarhRajasthan, India
    912.0×
  195. 197San Tung Chung HangIslands, Hong Kong
    902.0×
  196. 198Mae SotTak, Thailand
    902.0×
  197. 198DhaulpurRajasthan, India
    902.0×
  198. 200SurinSurin, Thailand
    892.0×

Top 200 of 2,699 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, April 6, 2025, smogrank.com/history/2025-04-06 (accessed 2 Oct 2026).

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