SmogRank / History / March 20, 2025

Most polluted cities on March 20, 2025

2,591 cities ranked by their average PM2.5 over the day; the worst was Thiruvananthapuram, India, at 767.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during March 20, 2025. All episodes.

← Thiruvananthapuram 767.0 µg/m³ 700 µg/m³15 WHO 24-hour guideline
Every city ranked for March 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. 1ThiruvananthapuramKerala, India
    500+51.1×
  2. 2Gadag-BetageriKarnataka, India
    29114.4×
  3. 3AriyalūrTamil Nadu, India
    27913.6×
  4. 4LoniUttar Pradesh, India
    23610.7×
  5. 5NalbāriAssam, India
    2028.5×
  6. 6BawānaDelhi, India
    1988.1×
  7. 7TiruchirappalliTamil Nadu, India
    1978.1×
  8. 8RamanathapuramTamil Nadu, India
    1897.3×
  9. 9Victoria de DurangoDurango, Mexico
    1877.1×
  10. 10HassanKarnataka, India
    1867.0×
  11. 11HājīpurBihar, India
    1846.9×
  12. 12BhiwadiRajasthan, India
    1836.7×
  13. 13SiliguriWest Bengal, India
    1816.6×
  14. 14GhāziābādUttar Pradesh, India
    1816.5×
  15. 15ShillongMeghalaya, India
    1816.5×
  16. 16Kathmandulow-cost sensorsBagmati Province, Nepal
    1806.5×
  17. 17Dhakalow-cost sensorsDhaka Division, Bangladesh
    1786.3×
  18. 18GuwahatiAssam, India
    1745.9×
  19. 19NarelaDelhi, India
    1715.6×
  20. 20MuzaffarnagarUttar Pradesh, India
    1715.6×
  21. 21TiruppurTamil Nadu, India
    1715.6×
  22. 22KikindaVojvodina, Serbia
    1705.5×
  23. 23KohimaNagaland, India
    1705.5×
  24. 24NajafgarhDelhi, India
    1705.5×
  25. 25Dera MāndiDelhi, India
    1695.4×
  26. 26NegotinCentral Serbia, Serbia
    1695.4×
  27. 27GorakhpurUttar Pradesh, India
    1695.4×
  28. 28GurugramHaryana, India
    1695.4×
  29. 29Charkhi DādriHaryana, India
    1675.2×
  30. 30OotyTamil Nadu, India
    1655.1×
  31. 31ŠabacCentral Serbia, Serbia
    1645.0×
  32. 32Ban ChangRayong, Thailand
    1614.7×
  33. 33KeonjhargarhOdisha, India
    1614.6×
  34. 34BarbilOdisha, India
    1604.6×
  35. 35PatnaBihar, India
    1604.6×
  36. 36PrayagrajUttar Pradesh, India
    1604.6×
  37. 37BegusaraiBihar, India
    1604.6×
  38. 38BulandshahrUttar Pradesh, India
    1604.5×
  39. 39PančevoVojvodina, Serbia
    1594.5×
  40. 40N'DjamenaN’Djaména, Chad
    1594.4×
  41. 41MexicaliBaja California, Mexico
    1574.3×
  42. 42PurniaBihar, India
    1574.3×
  43. 43AlgiersAlgiers, Algeria
    1574.3×
  44. 44DewasMadhya Pradesh, India
    1574.2×
  45. 45Dubailow-cost sensorsDubai, United Arab Emirates
    1564.2×
  46. 45Vientianelow-cost sensorsVientiane Prefecture, Laos
    1564.2×
  47. 47MothīhāriBihar, India
    1564.2×
  48. 48AugustówPodlasie, Poland
    1564.2×
  49. 48ĀsansolWest Bengal, India
    1564.2×
  50. 50DelhiDelhi, India
    1554.1×
  51. 51SasarāmBihar, India
    1554.1×
  52. 52MahādMaharashtra, India
    1544.0×
  53. 53DhaulpurRajasthan, India
    1544.0×
  54. 54LeskovacCentral Serbia, Serbia
    1533.9×
  55. 54IrapuatoGuanajuato, Mexico
    1533.9×
  56. 56RourkelaOdisha, India
    1533.9×
  57. 57Sri GanganagarRajasthan, India
    1533.9×
  58. 58NagaonAssam, India
    1523.8×
  59. 58GangtokSikkim, India
    1523.8×
  60. 60GuadalajaraJalisco, Mexico
    1523.8×
  61. 61OtwockMazovia, Poland
    1513.7×
  62. 62RoparPunjab, India
    1513.7×
  63. 62PāliRajasthan, India
    1513.7×
  64. 64RānīganjWest Bengal, India
    1513.7×
  65. 65KhargharMaharashtra, India
    1513.7×
  66. 66ZemunCentral Serbia, Serbia
    1503.7×
  67. 66KrotoszynGreater Poland, Poland
    1503.7×
  68. 68Czechowice-DziedziceSilesia, Poland
    1493.7×
  69. 69San Luis de la PazGuanajuato, Mexico
    1483.6×
  70. 70LoznicaCentral Serbia, Serbia
    1483.6×
  71. 71JodaOdisha, India
    1463.6×
  72. 72SukhothaiSukhothai, Thailand
    1453.6×
  73. 73ObrenovacCentral Serbia, Serbia
    1443.5×
  74. 74San Salvador TizatlalliMéxico, Mexico
    1443.5×
  75. 75GwaliorMadhya Pradesh, India
    1433.5×
  76. 76KielceŚwiętokrzyskie, Poland
    1433.5×
  77. 77MangaluruKarnataka, India
    1423.5×
  78. 77BilāspurChhattisgarh, India
    1423.5×
  79. 79LoeiLoei, Thailand
    1413.5×
  80. 80BadlapurMaharashtra, India
    1413.4×
  81. 80Banja LukaSrpska, Bosnia and Herzegovina
    1413.4×
  82. 82LazarevacCentral Serbia, Serbia
    1413.4×
  83. 83Bang Pakonglow-cost sensorsChachoengsao, Thailand
    1403.4×
  84. 84Khon KaenKhon Kaen, Thailand
    1403.4×
  85. 85Nong KhaemBangkok, Thailand
    1403.4×
  86. 85ShenyangLiaoning, China
    1403.4×
  87. 87AjmerRajasthan, India
    1393.4×
  88. 88SmederevoCentral Serbia, Serbia
    1393.4×
  89. 89San Juan del RíoQuerétaro, Mexico
    1393.4×
  90. 90BharatpurRajasthan, India
    1383.4×
  91. 91Roi EtRoi Et, Thailand
    1373.3×
  92. 92KalasinKalasin, Thailand
    1363.3×
  93. 93KalyānMaharashtra, India
    1353.3×
  94. 93TolucaMéxico, Mexico
    1353.3×
  95. 95LucknowUttar Pradesh, India
    1353.3×
  96. 96JalgaonMaharashtra, India
    1343.3×
  97. 97RatchaburiRatchaburi, Thailand
    1343.2×
  98. 97BuxarBihar, India
    1343.2×
  99. 99BhelaiChhattisgarh, India
    1333.2×
  100. 99Mixquiahuala de JuárezHidalgo, Mexico
    1333.2×
  101. 101MeerutUttar Pradesh, India
    1333.2×
  102. 102LudhianaPunjab, India
    1323.2×
  103. 102HanumāngarhRajasthan, India
    1323.2×
  104. 102WłocławekKujawsko-Pomorskie, Poland
    1323.2×
  105. 105SaharsaBihar, India
    1323.2×
  106. 106PoznańGreater Poland, Poland
    1313.2×
  107. 107HāpurUttar Pradesh, India
    1313.2×
  108. 107BoisarMaharashtra, India
    1313.2×
  109. 109AgraUttar Pradesh, India
    1303.1×
  110. 110KanpurUttar Pradesh, India
    1293.1×
  111. 111MandideepMadhya Pradesh, India
    1293.1×
  112. 112PuneMaharashtra, India
    1293.1×
  113. 113Khlong LuangPathum Thani, Thailand
    1293.1×
  114. 113TocopillaAntofagasta, Chile
    1293.1×
  115. 115YasothonYasothon, Thailand
    1283.1×
  116. 116PithampurMadhya Pradesh, India
    1283.1×
  117. 117XonacatlánMéxico, Mexico
    1283.1×
  118. 118HanoiHanoi, Vietnam
    1273.1×
  119. 118UttaraditUttaradit, Thailand
    1273.1×
  120. 118BelpaharOdisha, India
    1273.1×
  121. 121DādriUttar Pradesh, India
    1273.1×
  122. 122TumkūrKarnataka, India
    1263.1×
  123. 123Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1263.0×
  124. 123Gorzów WielkopolskiLubusz, Poland
    1263.0×
  125. 125ProkupljeCentral Serbia, Serbia
    1253.0×
  126. 126Lop BuriLopburi, Thailand
    1253.0×
  127. 127BydgoszczKujawsko-Pomorskie, Poland
    1253.0×
  128. 128PhetchabunPhetchabun, Thailand
    1243.0×
  129. 129Skarżysko-KamiennaŚwiętokrzyskie, Poland
    1243.0×
  130. 129BettiahBihar, India
    1243.0×
  131. 131Wadgaon KolhatiMaharashtra, India
    1243.0×
  132. 132ĆuprijaCentral Serbia, Serbia
    1233.0×
  133. 133Nakhon SawanNakhon Sawan, Thailand
    1233.0×
  134. 134Ban PhaeoSamut Sakhon, Thailand
    1222.9×
  135. 135PhetchaburiPhetchaburi, Thailand
    1222.9×
  136. 135Mae SotTak, Thailand
    1222.9×
  137. 137Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    1212.9×
  138. 137MuzaffarpurBihar, India
    1212.9×
  139. 139Sing BuriSing Buri, Thailand
    1212.9×
  140. 140GayaBihar, India
    1212.9×
  141. 140Barrio de PeralMurcia, Spain
    1212.9×
  142. 142Nakhon RatchasimaNakhon Ratchasima, Thailand
    1202.9×
  143. 142MunsanGyeonggi-do, South Korea
    1202.9×
  144. 142CheorwonGangwon-do, South Korea
    1202.9×
  145. 142ValjevoCentral Serbia, Serbia
    1202.9×
  146. 146Maha SarakhamMaha Sarakham, Thailand
    1192.9×
  147. 147LublinLublin, Poland
    1192.9×
  148. 147Sawai MadhopurRajasthan, India
    1192.9×
  149. 149LamphunLamphun, Thailand
    1192.9×
  150. 149ŁaskŁódź Voivodeship, Poland
    1192.9×
  151. 151ThāneMaharashtra, India
    1192.8×
  152. 151BhiwandiMaharashtra, India
    1192.8×
  153. 151PhichitPhichit, Thailand
    1192.8×
  154. 154Chiang MaiChiang Mai, Thailand
    1182.8×
  155. 154Samut SakhonSamut Sakhon, Thailand
    1182.8×
  156. 154CartagenaMurcia, Spain
    1182.8×
  157. 157Nakhon PathomNakhon Pathom, Thailand
    1172.8×
  158. 157Chai NatChai Nat, Thailand
    1172.8×
  159. 157San Francisco TlalcilalcalpanMéxico, Mexico
    1172.8×
  160. 160UdaipurRajasthan, India
    1172.8×
  161. 160SingrauliMadhya Pradesh, India
    1172.8×
  162. 162DejCluj County, Romania
    1162.8×
  163. 163Si Maha PhotPrachin Buri, Thailand
    1162.8×
  164. 163NonsanChungcheongnam-do, South Korea
    1162.8×
  165. 165GuanajuatoGuanajuato, Mexico
    1162.8×
  166. 166Buri RamBuriram, Thailand
    1152.7×
  167. 166Ban Talat BuengChon Buri, Thailand
    1152.7×
  168. 168Kamphaeng PhetKamphaeng Phet, Thailand
    1152.7×
  169. 168NagpurMaharashtra, India
    1152.7×
  170. 170LaturMaharashtra, India
    1142.7×
  171. 171Amnat CharoenAmnat Charoen, Thailand
    1142.7×
  172. 171BuyeoChungcheongnam-do, South Korea
    1142.7×
  173. 171RajākheriMadhya Pradesh, India
    1142.7×
  174. 174Kampalalow-cost sensorsCentral Region, Uganda
    1142.7×
  175. 175GwangjuGyeonggi-do, South Korea
    1142.7×
  176. 176SurinSurin, Thailand
    1132.7×
  177. 177WawerMazovia, Poland
    1132.7×
  178. 178DurgapurWest Bengal, India
    1132.7×
  179. 178ChaiyaphumChaiyaphum, Thailand
    1132.7×
  180. 180GummidipundiTamil Nadu, India
    1122.7×
  181. 181SangāreddiTelangana, India
    1122.7×
  182. 181ChittorgarhRajasthan, India
    1122.7×
  183. 183BhāgalpurBihar, India
    1122.7×
  184. 184NišCentral Serbia, Serbia
    1122.7×
  185. 184BelgradeCentral Serbia, Serbia
    1122.7×
  186. 184ToruńKujawsko-Pomorskie, Poland
    1122.7×
  187. 184KaliszGreater Poland, Poland
    1122.7×
  188. 188JaipurRajasthan, India
    1112.6×
  189. 188BhilaiChhattisgarh, India
    1112.6×
  190. 188YeojuGyeonggi-do, South Korea
    1112.6×
  191. 188KinzanChungcheongnam-do, South Korea
    1112.6×
  192. 192AnkleshwarGujarat, India
    1112.6×
  193. 192Nakhon LuangPhra Nakhon Si Ayutthaya, Thailand
    1112.6×
  194. 192SeonghwanChungcheongnam-do, South Korea
    1112.6×
  195. 192ŚwiecieKujawsko-Pomorskie, Poland
    1112.6×
  196. 196Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1112.6×
  197. 196MurciaMurcia, Spain
    1112.6×
  198. 198MukdahanMukdahan, Thailand
    1112.6×
  199. 198LubańLower Silesia, Poland
    1112.6×
  200. 200Gimpo-siGyeonggi-do, South Korea
    1102.6×

Top 200 of 2,591 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, March 20, 2025, smogrank.com/history/2025-03-20 (accessed 2 Oct 2026).

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