SmogRank / History / March 25, 2025

Most polluted cities on March 25, 2025

2,460 cities ranked by their average PM2.5 over the day; the worst was Rourkela, India, at 165.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during March 25, 2025. All episodes.

← Rourkela 165.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for March 25, 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. 1RourkelaOdisha, India
    24011.0×
  2. 2GhāziābādUttar Pradesh, India
    23310.5×
  3. 3Cheongsong gunGyeongsangbuk-do, South Korea
    23010.3×
  4. 4Vientianelow-cost sensorsVientiane Prefecture, Laos
    22510.0×
  5. 5SiwānBihar, India
    2199.6×
  6. 5BawānaDelhi, India
    2199.6×
  7. 7NarelaDelhi, India
    2179.5×
  8. 8NalbāriAssam, India
    2088.9×
  9. 9LoeiLoei, Thailand
    2008.3×
  10. 10NanNan, Thailand
    1998.3×
  11. 11GuwahatiAssam, India
    1988.2×
  12. 12HājīpurBihar, India
    1988.1×
  13. 14Charkhi DādriHaryana, India
    1967.9×
  14. 15MuzaffarnagarUttar Pradesh, India
    1937.7×
  15. 16SamāstipurBihar, India
    1927.6×
  16. 17OotyTamil Nadu, India
    1917.5×
  17. 17PhraePhrae, Thailand
    1917.5×
  18. 19Ubon RatchathaniUbon Ratchathani, Thailand
    1897.3×
  19. 20DelhiDelhi, India
    1877.1×
  20. 21DādriUttar Pradesh, India
    1867.1×
  21. 22LucknowUttar Pradesh, India
    1836.7×
  22. 23GurugramHaryana, India
    1786.3×
  23. 24BulandshahrUttar Pradesh, India
    1786.3×
  24. 25RānīganjWest Bengal, India
    1776.2×
  25. 26LampangLampang, Thailand
    1776.1×
  26. 27Khon KaenKhon Kaen, Thailand
    1766.1×
  27. 28SukhothaiSukhothai, Thailand
    1766.0×
  28. 29Dera MāndiDelhi, India
    1756.0×
  29. 30ĀsansolWest Bengal, India
    1756.0×
  30. 31PatnaBihar, India
    1756.0×
  31. 32Nong Bua LamphuNong Bua Lamphu, Thailand
    1745.9×
  32. 33ShrīrāmpurWest Bengal, India
    1735.8×
  33. 34Roi EtRoi Et, Thailand
    1735.8×
  34. 35Udon ThaniUdon Thani, Thailand
    1735.8×
  35. 35KalasinKalasin, Thailand
    1735.8×
  36. 37PurniaBihar, India
    1735.8×
  37. 38Chiang RaiChiang Rai, Thailand
    1725.7×
  38. 39ChaiyaphumChaiyaphum, Thailand
    1715.6×
  39. 40AndongGyeongsangbuk-do, South Korea
    1715.6×
  40. 41PhayaoPhayao, Thailand
    1705.5×
  41. 42MothīhāriBihar, India
    1705.5×
  42. 43AurangābādBihar, India
    1705.5×
  43. 44UttaraditUttaradit, Thailand
    1695.4×
  44. 45Kamphaeng PhetKamphaeng Phet, Thailand
    1695.4×
  45. 46Mae SotTak, Thailand
    1685.3×
  46. 47PhetchabunPhetchabun, Thailand
    1685.3×
  47. 48Maha SarakhamMaha Sarakham, Thailand
    1675.2×
  48. 48Ban ChangRayong, Thailand
    1675.2×
  49. 50Chai NatChai Nat, Thailand
    1675.2×
  50. 51YasothonYasothon, Thailand
    1665.2×
  51. 52NajafgarhDelhi, India
    1665.1×
  52. 53JalgaonMaharashtra, India
    1665.1×
  53. 54AnkleshwarGujarat, India
    1665.1×
  54. 54PhichitPhichit, Thailand
    1665.1×
  55. 56CholulaPuebla, Mexico
    1665.1×
  56. 57Nakhon RatchasimaNakhon Ratchasima, Thailand
    1665.1×
  57. 58RamanathapuramTamil Nadu, India
    1655.1×
  58. 59LamphunLamphun, Thailand
    1655.0×
  59. 60NoidaUttar Pradesh, India
    1655.0×
  60. 60BhiwadiRajasthan, India
    1655.0×
  61. 62Mae SaiChiang Rai, Thailand
    1645.0×
  62. 62Buri RamBuriram, Thailand
    1645.0×
  63. 64SasarāmBihar, India
    1644.9×
  64. 65SiliguriWest Bengal, India
    1644.9×
  65. 65PāliRajasthan, India
    1644.9×
  66. 65SurinSurin, Thailand
    1644.9×
  67. 68VapiGujarat, India
    1644.9×
  68. 69MandideepMadhya Pradesh, India
    1634.9×
  69. 70Lop BuriLopburi, Thailand
    1634.8×
  70. 71AhmedabadGujarat, India
    1624.8×
  71. 72MukdahanMukdahan, Thailand
    1624.7×
  72. 73GayaBihar, India
    1614.7×
  73. 74OtwockMazovia, Poland
    1614.6×
  74. 75Nakhon SawanNakhon Sawan, Thailand
    1604.6×
  75. 76BegusaraiBihar, India
    1604.6×
  76. 76ShenyangLiaoning, China
    1604.6×
  77. 78DehradunUttarakhand, India
    1604.5×
  78. 78Sakon NakhonSakon Nakhon, Thailand
    1604.5×
  79. 80Sing BuriSing Buri, Thailand
    1604.5×
  80. 81Nong KhaemBangkok, Thailand
    1594.5×
  81. 82SaharsaBihar, India
    1594.5×
  82. 83PatiālaPunjab, India
    1594.5×
  83. 84Amnat CharoenAmnat Charoen, Thailand
    1594.5×
  84. 85Prachin BuriPrachin Buri, Thailand
    1594.5×
  85. 86MunsanGyeonggi-do, South Korea
    1594.4×
  86. 87KanpurUttar Pradesh, India
    1594.4×
  87. 88AmritsarPunjab, India
    1584.4×
  88. 89KotaRajasthan, India
    1584.4×
  89. 90Sri GanganagarRajasthan, India
    1584.4×
  90. 91ChandigarhChandigarh, India
    1584.3×
  91. 92Si Maha PhotPrachin Buri, Thailand
    1574.3×
  92. 93CoyhaiqueAysén, Chile
    1574.3×
  93. 94NashikMaharashtra, India
    1574.3×
  94. 95DurgapurWest Bengal, India
    1574.3×
  95. 96KhargharMaharashtra, India
    1574.3×
  96. 97NagpurMaharashtra, India
    1574.2×
  97. 98Islamabadlow-cost sensorsIslamabad, Pakistan
    1564.2×
  98. 99CheorwonGangwon-do, South Korea
    1564.2×
  99. 100Chiang MaiChiang Mai, Thailand
    1564.2×
  100. 101YeojuGyeonggi-do, South Korea
    1564.2×
  101. 102KolkataWest Bengal, India
    1564.1×
  102. 103MeerutUttar Pradesh, India
    1564.1×
  103. 103Si Sa KetSi Sa Ket, Thailand
    1564.1×
  104. 105AngulOdisha, India
    1554.1×
  105. 106KalyānMaharashtra, India
    1554.1×
  106. 107KanchanaburiKanchanaburi, Thailand
    1554.1×
  107. 108BhiwandiMaharashtra, India
    1554.1×
  108. 108Greater NoidaUttar Pradesh, India
    1554.1×
  109. 110TiruchirappalliTamil Nadu, India
    1554.1×
  110. 111WŏnjuGangwon-do, South Korea
    1554.0×
  111. 112Gimpo-siGyeonggi-do, South Korea
    1544.0×
  112. 112ChuncheonGangwon-do, South Korea
    1544.0×
  113. 114Yangp'yŏngGyeonggi-do, South Korea
    1544.0×
  114. 115Goyang-siGyeonggi-do, South Korea
    1544.0×
  115. 116PrayagrajUttar Pradesh, India
    1544.0×
  116. 117Bucheon-siGyeonggi-do, South Korea
    1544.0×
  117. 118SeoulSeoul, South Korea
    1533.9×
  118. 119ChāndaMaharashtra, India
    1533.9×
  119. 119Khlong LuangPathum Thani, Thailand
    1533.9×
  120. 119Uijeongbu-siGyeonggi-do, South Korea
    1533.9×
  121. 122Anyang-siGyeonggi-do, South Korea
    1533.9×
  122. 123SuwonGyeonggi-do, South Korea
    1533.9×
  123. 124Nakhon LuangPhra Nakhon Si Ayutthaya, Thailand
    1533.9×
  124. 125RatchaburiRatchaburi, Thailand
    1523.8×
  125. 126PubalGyeonggi-do, South Korea
    1523.8×
  126. 127HouthalenFlanders, Belgium
    1523.8×
  127. 128HāpurUttar Pradesh, India
    1523.8×
  128. 129SeonghwanChungcheongnam-do, South Korea
    1523.8×
  129. 130NegotinCentral Serbia, Serbia
    1523.8×
  130. 131GummidipundiTamil Nadu, India
    1523.8×
  131. 131Ansan-siGyeonggi-do, South Korea
    1523.8×
  132. 133RoparPunjab, India
    1513.7×
  133. 134YangguGangwon-do, South Korea
    1513.7×
  134. 134Guri-siGyeonggi-do, South Korea
    1513.7×
  135. 134GrimbergenFlanders, Belgium
    1513.7×
  136. 137HongseongChungcheongnam-do, South Korea
    1513.7×
  137. 138GapyeongGyeonggi-do, South Korea
    1513.7×
  138. 138Seongnam-siGyeonggi-do, South Korea
    1513.7×
  139. 138GwangmyeongGyeonggi-do, South Korea
    1513.7×
  140. 141MenenFlanders, Belgium
    1503.7×
  141. 142GorakhpurUttar Pradesh, India
    1503.7×
  142. 143HanoiHanoi, Vietnam
    1493.7×
  143. 143DortmundNorth Rhine-Westphalia, Germany
    1493.7×
  144. 145Hwaseong-siGyeonggi-do, South Korea
    1493.7×
  145. 146TangjinChungcheongnam-do, South Korea
    1493.7×
  146. 146GunsanJeollabuk-do, South Korea
    1493.7×
  147. 148OkcheonNorth Chungcheong, South Korea
    1493.7×
  148. 148KimjeJeollabuk-do, South Korea
    1493.7×
  149. 150Ganghwa-gunIncheon, South Korea
    1483.6×
  150. 151Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1473.6×
  151. 151KinzanChungcheongnam-do, South Korea
    1473.6×
  152. 151NamyangjuGyeonggi-do, South Korea
    1473.6×
  153. 154MungerBihar, India
    1473.6×
  154. 155Sawai MadhopurRajasthan, India
    1473.6×
  155. 155KhannaPunjab, India
    1473.6×
  156. 155YangjuGyeonggi-do, South Korea
    1473.6×
  157. 155HasseltFlanders, Belgium
    1473.6×
  158. 159OsanGyeonggi-do, South Korea
    1463.6×
  159. 160YesanChungcheongnam-do, South Korea
    1463.6×
  160. 160BuanJeollabuk-do, South Korea
    1463.6×
  161. 160HanamGyeonggi-do, South Korea
    1463.6×
  162. 160MaldegemFlanders, Belgium
    1463.6×
  163. 164BettiahBihar, India
    1463.6×
  164. 164BoryeongChungcheongnam-do, South Korea
    1463.6×
  165. 166YŏnmuChungcheongnam-do, South Korea
    1463.6×
  166. 167MahādMaharashtra, India
    1453.6×
  167. 167Icheon-siGyeonggi-do, South Korea
    1453.6×
  168. 167BaddiHimachal Pradesh, India
    1453.6×
  169. 170ShillongMeghalaya, India
    1453.6×
  170. 170ZaventemFlanders, Belgium
    1453.6×
  171. 172PyeongtaekGyeonggi-do, South Korea
    1443.5×
  172. 172MasanGwangju, South Korea
    1443.5×
  173. 172IncheonIncheon, South Korea
    1443.5×
  174. 175AsanChungcheongnam-do, South Korea
    1443.5×
  175. 176SaraburiSaraburi, Thailand
    1443.5×
  176. 177GwangjuGyeonggi-do, South Korea
    1433.5×
  177. 178KeonjhargarhOdisha, India
    1433.5×
  178. 178JaipurRajasthan, India
    1433.5×
  179. 178TongyeongGyeongsangnam-do, South Korea
    1433.5×
  180. 178IzegemFlanders, Belgium
    1433.5×
  181. 178KölnNorth Rhine-Westphalia, Germany
    1433.5×
  182. 183SingrauliMadhya Pradesh, India
    1433.5×
  183. 184Bang Pakonglow-cost sensorsChachoengsao, Thailand
    1433.5×
  184. 185Nakhon PathomNakhon Pathom, Thailand
    1423.5×
  185. 186AarschotFlanders, Belgium
    1423.5×
  186. 187BhilwaraRajasthan, India
    1413.5×
  187. 188Nakhon NayokNakhon Nayok, Thailand
    1413.4×
  188. 189Chinch'ŏnNorth Chungcheong, South Korea
    1403.4×
  189. 189ValenciennesHauts-de-France, France
    1403.4×
  190. 191IksanJeollabuk-do, South Korea
    1403.4×
  191. 191Cheongju-siNorth Chungcheong, South Korea
    1403.4×
  192. 193Novi PazarCentral Serbia, Serbia
    1403.4×
  193. 193PhetchaburiPhetchaburi, Thailand
    1403.4×
  194. 193AranyaprathetSa Kaeo, Thailand
    1403.4×
  195. 193YeonggwangJeollanam-do, South Korea
    1403.4×
  196. 197ChāpraBihar, India
    1393.4×
  197. 198HattingenNorth Rhine-Westphalia, Germany
    1393.4×
  198. 199BéthuneHauts-de-France, France
    1393.4×
  199. 200BadlapurMaharashtra, India
    1393.4×

Top 200 of 2,460 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, March 25, 2025, smogrank.com/history/2025-03-25 (accessed 2 Oct 2026).

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