SmogRank / History / March 22, 2025

Most polluted cities on March 22, 2025

2,602 cities ranked by their average PM2.5 over the day; the worst was Saltillo, Mexico, at 946.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during March 22, 2025. All episodes.

← Saltillo 946.0 µg/m³ 900 µg/m³15 WHO 24-hour guideline
Every city ranked for March 22, 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. 1SaltilloCoahuila, Mexico
    500+63.1×
  2. 2ThiruvananthapuramKerala, India
    500+36.7×
  3. 3LoniUttar Pradesh, India
    27413.3×
  4. 4Dhakalow-cost sensorsDhaka Division, Bangladesh
    24811.5×
  5. 5N'DjamenaN’Djaména, Chad
    23810.9×
  6. 6BawānaDelhi, India
    2159.3×
  7. 7NalbāriAssam, India
    1998.3×
  8. 8JalandharPunjab, India
    1937.7×
  9. 9Vientianelow-cost sensorsVientiane Prefecture, Laos
    1907.4×
  10. 10Dera MāndiDelhi, India
    1877.1×
  11. 11NarelaDelhi, India
    1867.0×
  12. 12OotyTamil Nadu, India
    1836.7×
  13. 13CuddaloreTamil Nadu, India
    1776.2×
  14. 14GuwahatiAssam, India
    1776.1×
  15. 15HanoiHanoi, Vietnam
    1756.0×
  16. 15Ban ChangRayong, Thailand
    1756.0×
  17. 17Charkhi DādriHaryana, India
    1756.0×
  18. 18BāghpatUttar Pradesh, India
    1735.8×
  19. 19LampangLampang, Thailand
    1735.8×
  20. 20PhraePhrae, Thailand
    1735.8×
  21. 21GurugramHaryana, India
    1725.7×
  22. 22GhāziābādUttar Pradesh, India
    1715.6×
  23. 23Mae SotTak, Thailand
    1715.6×
  24. 23NanNan, Thailand
    1715.6×
  25. 25LamphunLamphun, Thailand
    1695.4×
  26. 26LudhianaPunjab, India
    1685.3×
  27. 27HanumāngarhRajasthan, India
    1675.3×
  28. 28MuzaffarnagarUttar Pradesh, India
    1675.3×
  29. 29BhiwadiRajasthan, India
    1675.2×
  30. 30Kampalalow-cost sensorsCentral Region, Uganda
    1665.1×
  31. 31HassanKarnataka, India
    1665.1×
  32. 32UttaraditUttaradit, Thailand
    1655.1×
  33. 33LoeiLoei, Thailand
    1655.0×
  34. 34SukhothaiSukhothai, Thailand
    1634.8×
  35. 35Chiang MaiChiang Mai, Thailand
    1634.8×
  36. 36ZamośćLublin, Poland
    1624.8×
  37. 37BulandshahrUttar Pradesh, India
    1624.8×
  38. 38AurangābādBihar, India
    1614.6×
  39. 39HājīpurBihar, India
    1604.6×
  40. 40Samut SakhonSamut Sakhon, Thailand
    1604.6×
  41. 41Nong KhaemBangkok, Thailand
    1584.4×
  42. 42NagaonAssam, India
    1584.4×
  43. 43SiliguriWest Bengal, India
    1584.4×
  44. 44PhetchaburiPhetchaburi, Thailand
    1584.3×
  45. 45PhetchabunPhetchabun, Thailand
    1584.3×
  46. 46DelhiDelhi, India
    1574.3×
  47. 47PhichitPhichit, Thailand
    1574.3×
  48. 49AhmedabadGujarat, India
    1554.1×
  49. 50Sri GanganagarRajasthan, India
    1554.1×
  50. 51AmritsarPunjab, India
    1544.0×
  51. 52LucknowUttar Pradesh, India
    1544.0×
  52. 53RatchaburiRatchaburi, Thailand
    1544.0×
  53. 54Nakhon PathomNakhon Pathom, Thailand
    1544.0×
  54. 55Ban PhaeoSamut Sakhon, Thailand
    1533.9×
  55. 56Bang Pakonglow-cost sensorsChachoengsao, Thailand
    1533.9×
  56. 57CoyhaiqueAysén, Chile
    1533.9×
  57. 58PāliRajasthan, India
    1533.8×
  58. 59Khlong LuangPathum Thani, Thailand
    1523.8×
  59. 60NajafgarhDelhi, India
    1523.8×
  60. 61NegotinCentral Serbia, Serbia
    1523.8×
  61. 62Ubon RatchathaniUbon Ratchathani, Thailand
    1513.7×
  62. 63Sing BuriSing Buri, Thailand
    1513.7×
  63. 64Nong Bua LamphuNong Bua Lamphu, Thailand
    1513.7×
  64. 65San Salvador TizatlalliMéxico, Mexico
    1513.7×
  65. 66BhiwandiMaharashtra, India
    1503.7×
  66. 67NagpurMaharashtra, India
    1493.7×
  67. 68SholapurMaharashtra, India
    1483.6×
  68. 69LublinLublin, Poland
    1473.6×
  69. 70TiruchirappalliTamil Nadu, India
    1463.6×
  70. 71Mueang NonthaburiNonthaburi, Thailand
    1463.6×
  71. 72HongseongChungcheongnam-do, South Korea
    1453.6×
  72. 73MahādMaharashtra, India
    1443.5×
  73. 74GayaBihar, India
    1433.5×
  74. 74GandhinagarGujarat, India
    1433.5×
  75. 76Kathmandulow-cost sensorsBagmati Province, Nepal
    1433.5×
  76. 76ShenyangLiaoning, China
    1433.5×
  77. 78Kamphaeng PhetKamphaeng Phet, Thailand
    1423.5×
  78. 79DębicaSubcarpathia, Poland
    1423.5×
  79. 80CheorwonGangwon-do, South Korea
    1413.5×
  80. 81Chai NatChai Nat, Thailand
    1413.5×
  81. 81BoryeongChungcheongnam-do, South Korea
    1413.5×
  82. 83PurniaBihar, India
    1413.4×
  83. 84BangkokBangkok, Thailand
    1403.4×
  84. 85ZaječarCentral Serbia, Serbia
    1403.4×
  85. 86MunsanGyeonggi-do, South Korea
    1403.4×
  86. 87Nakhon LuangPhra Nakhon Si Ayutthaya, Thailand
    1393.4×
  87. 87SeosanChungcheongnam-do, South Korea
    1393.4×
  88. 89PhayaoPhayao, Thailand
    1393.4×
  89. 89PuneMaharashtra, India
    1393.4×
  90. 89TangjinChungcheongnam-do, South Korea
    1393.4×
  91. 92SangāreddiTelangana, India
    1393.4×
  92. 93Prachin BuriPrachin Buri, Thailand
    1383.4×
  93. 94Si Maha PhotPrachin Buri, Thailand
    1383.4×
  94. 94MasanGwangju, South Korea
    1383.4×
  95. 94IksanJeollabuk-do, South Korea
    1383.4×
  96. 97Lop BuriLopburi, Thailand
    1373.4×
  97. 98PatnaBihar, India
    1373.3×
  98. 98KalasinKalasin, Thailand
    1373.3×
  99. 98Bucheon-siGyeonggi-do, South Korea
    1373.3×
  100. 101SasarāmBihar, India
    1373.3×
  101. 102Phra PradaengSamut Prakan, Thailand
    1363.3×
  102. 102Buri RamBuriram, Thailand
    1363.3×
  103. 104YasothonYasothon, Thailand
    1363.3×
  104. 105KanchanaburiKanchanaburi, Thailand
    1363.3×
  105. 105LaturMaharashtra, India
    1363.3×
  106. 105KanpurUttar Pradesh, India
    1363.3×
  107. 108NonsanChungcheongnam-do, South Korea
    1353.3×
  108. 109SuwonGyeonggi-do, South Korea
    1353.3×
  109. 110MuzaffarpurBihar, India
    1353.3×
  110. 110SurinSurin, Thailand
    1353.3×
  111. 110Gimpo-siGyeonggi-do, South Korea
    1353.3×
  112. 113ValjevoCentral Serbia, Serbia
    1353.3×
  113. 113PithampurMadhya Pradesh, India
    1353.3×
  114. 115Bang Bo DistrictSamut Prakan, Thailand
    1343.3×
  115. 116Goyang-siGyeonggi-do, South Korea
    1343.3×
  116. 116Anyang-siGyeonggi-do, South Korea
    1343.3×
  117. 118StarachowiceŚwiętokrzyskie, Poland
    1343.2×
  118. 118Samut PrakanSamut Prakan, Thailand
    1343.2×
  119. 118OsanGyeonggi-do, South Korea
    1343.2×
  120. 118PubalGyeonggi-do, South Korea
    1343.2×
  121. 122Ansan-siGyeonggi-do, South Korea
    1333.2×
  122. 123Nakhon SawanNakhon Sawan, Thailand
    1333.2×
  123. 123SeoulSeoul, South Korea
    1333.2×
  124. 123GwangmyeongGyeonggi-do, South Korea
    1333.2×
  125. 126Novi PazarCentral Serbia, Serbia
    1333.2×
  126. 126PratāpgarhRajasthan, India
    1333.2×
  127. 126MeerutUttar Pradesh, India
    1333.2×
  128. 126JalgaonMaharashtra, India
    1333.2×
  129. 126ChandigarhChandigarh, India
    1333.2×
  130. 126BuanJeollabuk-do, South Korea
    1333.2×
  131. 132Hwaseong-siGyeonggi-do, South Korea
    1323.2×
  132. 133KimjeJeollabuk-do, South Korea
    1313.2×
  133. 134Ban Talat BuengChon Buri, Thailand
    1303.2×
  134. 135KłodzkoLower Silesia, Poland
    1303.1×
  135. 136GwangjuGwangju, South Korea
    1293.1×
  136. 136Czechowice-DziedziceSilesia, Poland
    1293.1×
  137. 138RzeszówSubcarpathia, Poland
    1293.1×
  138. 138SeonghwanChungcheongnam-do, South Korea
    1293.1×
  139. 138IncheonIncheon, South Korea
    1293.1×
  140. 141RoparPunjab, India
    1283.1×
  141. 141Cheongsong gunGyeongsangbuk-do, South Korea
    1283.1×
  142. 141MandideepMadhya Pradesh, India
    1283.1×
  143. 144AsanChungcheongnam-do, South Korea
    1283.1×
  144. 145Roi EtRoi Et, Thailand
    1283.1×
  145. 146DādriUttar Pradesh, India
    1283.1×
  146. 146Maha SarakhamMaha Sarakham, Thailand
    1283.1×
  147. 146SejongSejong-si, South Korea
    1283.1×
  148. 149BuyeoChungcheongnam-do, South Korea
    1273.1×
  149. 149Seongnam-siGyeonggi-do, South Korea
    1273.1×
  150. 151KhannaPunjab, India
    1273.1×
  151. 152Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1273.1×
  152. 153Nakhon RatchasimaNakhon Ratchasima, Thailand
    1263.1×
  153. 153GunsanJeollabuk-do, South Korea
    1263.1×
  154. 153AnseongGyeonggi-do, South Korea
    1263.1×
  155. 153CholulaPuebla, Mexico
    1263.1×
  156. 157Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1263.0×
  157. 158Amnat CharoenAmnat Charoen, Thailand
    1263.0×
  158. 158YesanChungcheongnam-do, South Korea
    1263.0×
  159. 160Bang KapiBangkok, Thailand
    1263.0×
  160. 161Hua HinPrachuap Khiri Khan, Thailand
    1253.0×
  161. 161SaraburiSaraburi, Thailand
    1253.0×
  162. 163Udon ThaniUdon Thani, Thailand
    1253.0×
  163. 164YŏnmuChungcheongnam-do, South Korea
    1253.0×
  164. 165YeojuGyeonggi-do, South Korea
    1243.0×
  165. 166ŠabacCentral Serbia, Serbia
    1243.0×
  166. 167YeonggwangJeollanam-do, South Korea
    1233.0×
  167. 168PyeongtaekGyeonggi-do, South Korea
    1233.0×
  168. 169ChaiyaphumChaiyaphum, Thailand
    1222.9×
  169. 170HāpurUttar Pradesh, India
    1222.9×
  170. 170JungpyongNorth Chungcheong, South Korea
    1222.9×
  171. 172JhālāwārRajasthan, India
    1222.9×
  172. 173TongyeongGyeongsangnam-do, South Korea
    1222.9×
  173. 174Mae SaiChiang Rai, Thailand
    1212.9×
  174. 175DamyangJeollanam-do, South Korea
    1212.9×
  175. 176Ganghwa-gunIncheon, South Korea
    1212.9×
  176. 176ChiguayanteBiobio, Chile
    1212.9×
  177. 178NamsaJeollabuk-do, South Korea
    1202.9×
  178. 179ProkupljeCentral Serbia, Serbia
    1192.9×
  179. 180GuadalajaraJalisco, Mexico
    1192.8×
  180. 181KotaRajasthan, India
    1182.8×
  181. 182PatiālaPunjab, India
    1182.8×
  182. 182AranyaprathetSa Kaeo, Thailand
    1182.8×
  183. 182Guri-siGyeonggi-do, South Korea
    1182.8×
  184. 182JeongeupJeollabuk-do, South Korea
    1182.8×
  185. 186Chiang RaiChiang Rai, Thailand
    1182.8×
  186. 186MalegaonMaharashtra, India
    1182.8×
  187. 186Icheon-siGyeonggi-do, South Korea
    1182.8×
  188. 186SinanJeollanam-do, South Korea
    1182.8×
  189. 190Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    1182.8×
  190. 190Yangp'yŏngGyeonggi-do, South Korea
    1182.8×
  191. 192Uijeongbu-siGyeonggi-do, South Korea
    1172.8×
  192. 192Cheongju-siNorth Chungcheong, South Korea
    1172.8×
  193. 194RamanathapuramTamil Nadu, India
    1172.8×
  194. 195GwangjuGyeonggi-do, South Korea
    1162.8×
  195. 195Jastrzębie ZdrójSilesia, Poland
    1162.8×
  196. 197PirotCentral Serbia, Serbia
    1162.8×
  197. 197JaipurRajasthan, India
    1162.8×
  198. 197GorakhpurUttar Pradesh, India
    1162.8×
  199. 200KruševacCentral Serbia, Serbia
    1162.8×

Top 200 of 2,602 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 22, 2025, smogrank.com/history/2025-03-22 (accessed 2 Oct 2026).

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