SmogRank / History / March 31, 2026

Most polluted cities on March 31, 2026

2,334 cities ranked by their average PM2.5 over the day; the worst was Changchun, China, at 159.0 µg/m³. Each city's own local calendar day.

  1. 1Changchunlow-cost sensorsJilin, China
    159.010.6×
  2. 2Chiang Mailow-cost sensorsChiang Mai, Thailand
    148.09.9×
  3. 3BhiwāniHaryana, India
    118.07.9×
  4. 4GurugramHaryana, India
    105.07.0×
  5. 5Vientianelow-cost sensorsVientiane Prefecture, Laos
    103.06.9×
  6. 6NarelaDelhi, India
    77.65.2×
  7. 7Yamuna NagarHaryana, India
    76.95.1×
  8. 8HājīpurBihar, India
    73.94.9×
  9. 9SonīpatHaryana, India
    73.84.9×
  10. 10Dhakalow-cost sensorsDhaka Division, Bangladesh
    71.64.8×
  11. 11FaridabadHaryana, India
    70.34.7×
  12. 12SingrauliMadhya Pradesh, India
    69.24.6×
  13. 13Uttaraditlow-cost sensorsUttaradit, Thailand
    69.04.6×
  14. 14BaddiHimachal Pradesh, India
    65.64.4×
  15. 15PratāpgarhRajasthan, India
    65.24.3×
  16. 16BhiwadiRajasthan, India
    63.64.2×
  17. 17ByasanagarOdisha, India
    63.14.2×
  18. 18BhelaiChhattisgarh, India
    59.44.0×
  19. 19NoidaUttar Pradesh, India
    59.03.9×
  20. 20Pimpri-ChinchwadMaharashtra, India
    57.83.9×
  21. 21Kampalalow-cost sensorsCentral Region, Uganda
    56.53.8×
  22. 22JodaOdisha, India
    51.83.5×
  23. 23LucknowUttar Pradesh, India
    51.53.4×
  24. 23DelhiDelhi, India
    51.53.4×
  25. 25SirsaHaryana, India
    50.33.4×
  26. 26Bahawalpurlow-cost sensorsPunjab, Pakistan
    49.83.3×
  27. 27ThānesarHaryana, India
    49.23.3×
  28. 28PatnaBihar, India
    49.13.3×
  29. 29ArāriaBihar, India
    49.03.3×
  30. 30GhāziābādUttar Pradesh, India
    48.53.2×
  31. 31Rahim Yar Khanlow-cost sensorsPunjab, Pakistan
    48.23.2×
  32. 32AmbālaHaryana, India
    47.83.2×
  33. 33KadapaAndhra Pradesh, India
    47.03.1×
  34. 34PanchkulaHaryana, India
    46.83.1×
  35. 35MuzaffarnagarUttar Pradesh, India
    46.53.1×
  36. 36Kojomkullow-cost sensorsChuy Region, Kyrgyzstan
    46.43.1×
  37. 37KarnālHaryana, India
    46.33.1×
  38. 38ArrahBihar, India
    46.13.1×
  39. 39PuneMaharashtra, India
    46.03.1×
  40. 40GummidipundiTamil Nadu, India
    45.73.0×
  41. 41JīndHaryana, India
    45.43.0×
  42. 42Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    44.83.0×
  43. 43ŻywiecSilesia, Poland
    44.73.0×
  44. 44JalandharPunjab, India
    43.72.9×
  45. 45GayaBihar, India
    43.42.9×
  46. 46BuxarBihar, India
    42.22.8×
  47. 47AngulOdisha, India
    42.12.8×
  48. 48NashikMaharashtra, India
    41.92.8×
  49. 48NajafgarhDelhi, India
    41.92.8×
  50. 50ClosepetKarnataka, India
    41.82.8×
  51. 51BānswāraRajasthan, India
    41.22.7×
  52. 52TirumalaAndhra Pradesh, India
    41.12.7×
  53. 52RourkelaOdisha, India
    41.12.7×
  54. 54RājgīrBihar, India
    40.82.7×
  55. 55Kathmandulow-cost sensorsBagmati Province, Nepal
    40.62.7×
  56. 56Greater NoidaUttar Pradesh, India
    40.22.7×
  57. 57SholapurMaharashtra, India
    39.72.6×
  58. 58JaipurRajasthan, India
    39.22.6×
  59. 59JalgaonMaharashtra, India
    39.12.6×
  60. 60BarbilOdisha, India
    38.92.6×
  61. 61VijayawadaAndhra Pradesh, India
    38.72.6×
  62. 62BegusaraiBihar, India
    37.92.5×
  63. 63KeonjhargarhOdisha, India
    37.82.5×
  64. 64Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    37.62.5×
  65. 65Chrang Chamreh Muoylow-cost sensorsPhnom Penh, Cambodia
    37.32.5×
  66. 66Faisalabadlow-cost sensorsPunjab, Pakistan
    36.82.5×
  67. 66PatiālaPunjab, India
    36.82.5×
  68. 68CuttackOdisha, India
    36.42.4×
  69. 68ChandigarhChandigarh, India
    36.42.4×
  70. 70BhubaneswarOdisha, India
    36.32.4×
  71. 71ChittorgarhRajasthan, India
    35.62.4×
  72. 72KolkataWest Bengal, India
    35.52.4×
  73. 73Rawalpindilow-cost sensorsPunjab, Pakistan
    35.42.4×
  74. 73NaharlagunArunachal Pradesh, India
    35.42.4×
  75. 75Talgharlow-cost sensorsAlmaty Region, Kazakhstan
    35.32.4×
  76. 76MuroranHokkaido, Japan
    35.02.3×
  77. 77ChittoorAndhra Pradesh, India
    34.72.3×
  78. 77Otegen Batyralow-cost sensorsAlmaty Region, Kazakhstan
    34.72.3×
  79. 79Phuntsholinglow-cost sensorsChukha, Bhutan
    34.52.3×
  80. 80HaldiaWest Bengal, India
    34.42.3×
  81. 81AgartalaTripura, India
    33.92.3×
  82. 82BengaluruKarnataka, India
    33.12.2×
  83. 83YadgirKarnataka, India
    33.02.2×
  84. 84JhariaJharkhand, India
    32.72.2×
  85. 84Lebedinovkalow-cost sensorsChuy Region, Kyrgyzstan
    32.72.2×
  86. 86BaripādaOdisha, India
    32.62.2×
  87. 87BāghpatUttar Pradesh, India
    32.52.2×
  88. 87Sukutalow-cost sensorsWestern, Gambia
    32.52.2×
  89. 89AjmerRajasthan, India
    32.42.2×
  90. 89Burundaylow-cost sensorsAlmaty Region, Kazakhstan
    32.42.2×
  91. 91VercelliPiedmont, Italy
    32.22.1×
  92. 91SarajevoFederation of B&H, Bosnia and Herzegovina
    32.22.1×
  93. 93TomakomaiHokkaido, Japan
    32.12.1×
  94. 94CoimbatoreTamil Nadu, India
    32.02.1×
  95. 95KarauliRajasthan, India
    31.92.1×
  96. 95ŁaskŁódź Voivodeship, Poland
    31.92.1×
  97. 97Lahorelow-cost sensorsPunjab, Pakistan
    31.82.1×
  98. 98MeerutUttar Pradesh, India
    31.72.1×
  99. 98Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    31.72.1×
  100. 100ShivamoggaKarnataka, India
    31.52.1×
  101. 101DurgapurWest Bengal, India
    31.12.1×
  102. 102ThāneMaharashtra, India
    30.82.1×
  103. 103TirupatiAndhra Pradesh, India
    30.62.0×
  104. 104HyderabadTelangana, India
    30.52.0×
  105. 105HirosakiAomori, Japan
    30.12.0×
  106. 106San Luis PotosíSan Luis Potosí, Mexico
    29.92.0×
  107. 107Santa Anita - Los FicusLima region, Peru
    29.82.0×
  108. 108ChūruRajasthan, India
    29.72.0×
  109. 109QuthbullapurTelangana, India
    29.62.0×
  110. 110Lagoslow-cost sensorsLagos, Nigeria
    29.32.0×
  111. 111Almatylow-cost sensorsAlmaty, Kazakhstan
    29.11.9×
  112. 112AizawlMizoram, India
    28.81.9×
  113. 112TuxtlaChiapas, Mexico
    28.81.9×
  114. 114KolhāpurMaharashtra, India
    28.71.9×
  115. 114Khlong Luanglow-cost sensorsPathum Thani, Thailand
    28.71.9×
  116. 116NagpurMaharashtra, India
    28.51.9×
  117. 116Banja LukaSrpska, Bosnia and Herzegovina
    28.51.9×
  118. 118CalexicoCalifornia, United States
    28.41.9×
  119. 119GwaliorMadhya Pradesh, India
    28.31.9×
  120. 119AmaravatiAndhra Pradesh, India
    28.31.9×
  121. 121KalyānMaharashtra, India
    27.71.8×
  122. 122NalbāriAssam, India
    27.61.8×
  123. 123ChikmagalūrKarnataka, India
    27.51.8×
  124. 124KanpurUttar Pradesh, India
    27.31.8×
  125. 124AnkleshwarGujarat, India
    27.31.8×
  126. 126Temalow-cost sensorsGreater Accra, Ghana
    27.21.8×
  127. 127UnderaGujarat, India
    27.11.8×
  128. 128MorādābādUttar Pradesh, India
    27.01.8×
  129. 129CallaoCallao, Peru
    26.81.8×
  130. 130SāngliMaharashtra, India
    26.71.8×
  131. 130Sri GanganagarRajasthan, India
    26.71.8×
  132. 132ShillongMeghalaya, India
    26.41.8×
  133. 133IndoreMadhya Pradesh, India
    26.31.8×
  134. 134MahādMaharashtra, India
    26.21.7×
  135. 134AhmedabadGujarat, India
    26.21.7×
  136. 136ChitoseHokkaido, Japan
    25.81.7×
  137. 137AsahikawaHokkaido, Japan
    25.41.7×
  138. 138Queenstown Estatelow-cost sensorsSingapore
    25.31.7×
  139. 138HakodateHokkaido, Japan
    25.31.7×
  140. 140PrayagrajUttar Pradesh, India
    25.11.7×
  141. 141Târgu Mureşlow-cost sensorsMureș County, Romania
    25.01.7×
  142. 141GandhinagarGujarat, India
    25.01.7×
  143. 141BikanerRajasthan, India
    25.01.7×
  144. 141MexicaliBaja California, Mexico
    25.01.7×
  145. 141San Francisco De BorjaLima region, Peru
    25.01.7×
  146. 146Gujranwalalow-cost sensorsPunjab, Pakistan
    24.91.7×
  147. 146Jammulow-cost sensorsJammu and Kashmir, India
    24.91.7×
  148. 148Sai Mailow-cost sensorsBangkok, Thailand
    24.81.7×
  149. 149BhilwaraRajasthan, India
    24.61.6×
  150. 149LimaLima Province, Peru
    24.61.6×
  151. 151PanvelMaharashtra, India
    24.51.6×
  152. 151IshinomakiMiyagi, Japan
    24.51.6×
  153. 151NeelankaraiTamil Nadu, India
    24.51.6×
  154. 154IaşiIași County, Romania
    24.41.6×
  155. 154SilcharAssam, India
    24.41.6×
  156. 154AomoriAomori, Japan
    24.41.6×
  157. 157BitolaBitola, North Macedonia
    24.31.6×
  158. 158BareillyUttar Pradesh, India
    24.21.6×
  159. 159BārānRajasthan, India
    24.11.6×
  160. 159Quezon Citylow-cost sensorsNational Capital Region, Philippines
    24.11.6×
  161. 161Hacienda Santa FeJalisco, Mexico
    24.01.6×
  162. 162JhunjhunūnRajasthan, India
    23.81.6×
  163. 162FengshanTakao, Taiwan
    23.81.6×
  164. 162Columbialow-cost sensorsMissouri, United States
    23.81.6×
  165. 165Quettalow-cost sensorsBalochistan, Pakistan
    23.71.6×
  166. 166Iloilolow-cost sensorsWestern Visayas, Philippines
    23.61.6×
  167. 167GangtokSikkim, India
    23.51.6×
  168. 168Islamabadlow-cost sensorsIslamabad, Pakistan
    23.21.5×
  169. 168Bang Pakonglow-cost sensorsChachoengsao, Thailand
    23.21.5×
  170. 170MiyakoIwate, Japan
    23.11.5×
  171. 171SuceavaSuceava, Romania
    23.01.5×
  172. 171KotaRajasthan, India
    23.01.5×
  173. 173BhāgalpurBihar, India
    22.91.5×
  174. 174LaturMaharashtra, India
    22.81.5×
  175. 174Dakarlow-cost sensorsDakar, Senegal
    22.81.5×
  176. 176Bangkoklow-cost sensorsBangkok, Thailand
    22.71.5×
  177. 176ObihiroHokkaido, Japan
    22.71.5×
  178. 176New Taipei CityTaipei, Taiwan
    22.71.5×
  179. 179ShulinTaipei, Taiwan
    22.51.5×
  180. 179Wan ChaiWan Chai, Hong Kong
    22.51.5×
  181. 181XizhiTaipei, Taiwan
    22.31.5×
  182. 181XonacatlánMéxico, Mexico
    22.31.5×
  183. 183Ban Khlong Prawetlow-cost sensorsBangkok, Thailand
    22.01.5×
  184. 184RānīganjWest Bengal, India
    21.91.5×
  185. 184TaitungTaiwan, Taiwan
    21.91.5×
  186. 186NišCentral Serbia, Serbia
    21.81.5×
  187. 186ChāndaMaharashtra, India
    21.81.5×
  188. 186BrookfieldIllinois, United States
    21.81.5×
  189. 186ŌsakiMiyagi, Japan
    21.81.5×
  190. 190Multanlow-cost sensorsPunjab, Pakistan
    21.61.4×
  191. 191HubballiKarnataka, India
    21.51.4×
  192. 191TaipeiTaiwan, Taiwan
    21.51.4×
  193. 193DūngarpurRajasthan, India
    21.41.4×
  194. 193Singaporelow-cost sensorsSingapore
    21.41.4×
  195. 195OtwockMazovia, Poland
    21.31.4×
  196. 195HachinoheAomori, Japan
    21.31.4×
  197. 197NagaiYamagata, Japan
    21.21.4×
  198. 198JhālāwārRajasthan, India
    21.01.4×
  199. 198AurangabadMaharashtra, India
    21.01.4×
  200. 200SerilingampalleTelangana, India
    20.61.4×

Top 200 of 2,334 shown.

Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+