SmogRank / History / April 15, 2025

Most polluted cities on April 15, 2025

2,457 cities ranked by their average PM2.5 over the day; the worst was Islamabad, Pakistan, at 70.3 µg/m³. Each city's own local calendar day.

← Islamabad 70.3 µg/m³ 70 µg/m³15 WHO 24-hour guideline
Every city ranked for April 15, 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. 1Islamabadlow-cost sensorsIslamabad, Pakistan
    1614.7×
  2. 2OsornoLos Lagos Region, Chile
    1604.5×
  3. 3DelhiDelhi, India
    1574.3×
  4. 4MukdahanMukdahan, Thailand
    1544.0×
  5. 5Tuen MunTuen Mun, Hong Kong
    1533.9×
  6. 6YasothonYasothon, Thailand
    1533.8×
  7. 7Wan ChaiWan Chai, Hong Kong
    1523.8×
  8. 8Mong KokYau Tsim Mong District, Hong Kong
    1523.8×
  9. 9Quezon Citylow-cost sensorsNational Capital Region, Philippines
    1513.7×
  10. 10San Tung Chung HangIslands, Hong Kong
    1483.6×
  11. 11Ubon RatchathaniUbon Ratchathani, Thailand
    1463.6×
  12. 12GuangzhouGuangdong, China
    1443.5×
  13. 13FanlingNorth District, Hong Kong
    1373.3×
  14. 14CholulaPuebla, Mexico
    1353.3×
  15. 15VillarricaAraucania, Chile
    1353.3×
  16. 16Amnat CharoenAmnat Charoen, Thailand
    1343.3×
  17. 17VictoriaCentral and Western, Hong Kong
    1323.2×
  18. 18KalasinKalasin, Thailand
    1293.1×
  19. 19Suphan BuriSuphan Buri, Thailand
    1273.1×
  20. 20AshgabatAshgabat, Turkmenistan
    1263.0×
  21. 20Victoria de DurangoDurango, Mexico
    1263.0×
  22. 22CoyhaiqueAysén, Chile
    1243.0×
  23. 23HualpénBiobio, Chile
    1243.0×
  24. 24Kwai ChungKwai Tsing District, Hong Kong
    1233.0×
  25. 25Sakon NakhonSakon Nakhon, Thailand
    1233.0×
  26. 26ChillánÑuble, Chile
    1222.9×
  27. 27Buri RamBuriram, Thailand
    1212.9×
  28. 28Lop BuriLopburi, Thailand
    1202.9×
  29. 28Tai PoTai Po, Hong Kong
    1202.9×
  30. 30Sau Mau PingKwun Tong District, Hong Kong
    1202.9×
  31. 31CallaoCallao, Peru
    1182.8×
  32. 32Sha TinSha Tin, Hong Kong
    1172.8×
  33. 33NacimientoBiobio, Chile
    1172.8×
  34. 34Roi EtRoi Et, Thailand
    1162.8×
  35. 34La UniónLos Ríos Region, Chile
    1162.8×
  36. 36HualquiBiobio, Chile
    1152.7×
  37. 37SurinSurin, Thailand
    1142.7×
  38. 38Tsuen WanTsuen Wan, Hong Kong
    1132.7×
  39. 39Tin Shui WaiYuen Long, Hong Kong
    1132.7×
  40. 40Dubailow-cost sensorsDubai, United Arab Emirates
    1132.7×
  41. 41Sham Shui PoSham Shui Po District, Hong Kong
    1122.7×
  42. 42TlaquepaqueJalisco, Mexico
    1102.6×
  43. 43San CarlosÑuble, Chile
    1102.6×
  44. 44ShenyangLiaoning, China
    1102.6×
  45. 45JinchengFukien, Taiwan
    1082.6×
  46. 46KanchanaburiKanchanaburi, Thailand
    1082.6×
  47. 47Sing BuriSing Buri, Thailand
    1082.5×
  48. 48Maha SarakhamMaha Sarakham, Thailand
    1072.5×
  49. 49LimaLima Province, Peru
    1062.5×
  50. 50CuranilahueBiobio, Chile
    1062.5×
  51. 51Nakhon RatchasimaNakhon Ratchasima, Thailand
    1052.5×
  52. 52Novi PazarCentral Serbia, Serbia
    1022.4×
  53. 53PueblaPuebla, Mexico
    1002.4×
  54. 54ValdiviaLos Ríos Region, Chile
    992.3×
  55. 55Hacienda Santa FeJalisco, Mexico
    972.3×
  56. 56CuernavacaMorelos, Mexico
    962.2×
  57. 57Zacatepec de HidalgoMorelos, Mexico
    952.2×
  58. 58Puerto AysénAysén, Chile
    932.1×
  59. 59ZaječarCentral Serbia, Serbia
    922.1×
  60. 59ZapopanJalisco, Mexico
    922.1×
  61. 61Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    912.0×
  62. 62Chai NatChai Nat, Thailand
    912.0×
  63. 62LinaresMaule Region, Chile
    912.0×
  64. 64KaohsiungTakao, Taiwan
    902.0×
  65. 65Samut SakhonSamut Sakhon, Thailand
    892.0×
  66. 66Si Sa KetSi Sa Ket, Thailand
    892.0×
  67. 66MagongTaiwan, Taiwan
    892.0×
  68. 68TemucoAraucania, Chile
    881.9×
  69. 69BuziTaiwan, Taiwan
    881.9×
  70. 70San Pawl il-BaħarSaint Paul’s Bay, Malta
    881.9×
  71. 71San Francisco De BorjaLima region, Peru
    881.9×
  72. 72Nakhon LuangPhra Nakhon Si Ayutthaya, Thailand
    871.9×
  73. 72Santa AnitaJalisco, Mexico
    871.9×
  74. 74Los ÁngelesBiobio, Chile
    871.9×
  75. 75TainanTaiwan, Taiwan
    861.9×
  76. 76Istanbullow-cost sensorsIstanbul, Turkey
    861.9×
  77. 77XizhouTaiwan, Taiwan
    861.8×
  78. 78ChaiyaphumChaiyaphum, Thailand
    851.8×
  79. 79ErlunTaiwan, Taiwan
    851.8×
  80. 80GuadalajaraJalisco, Mexico
    851.8×
  81. 81ErlinTaiwan, Taiwan
    841.8×
  82. 81GdyniaPomerania, Poland
    841.8×
  83. 83DouliuTaiwan, Taiwan
    841.8×
  84. 84TaoyuanTaiwan, Taiwan
    841.8×
  85. 85Vientianelow-cost sensorsVientiane Prefecture, Laos
    841.8×
  86. 85FengshanTakao, Taiwan
    841.8×
  87. 87KlaipėdaKlaipėda County, Lithuania
    831.8×
  88. 87Nong KhaemBangkok, Thailand
    831.8×
  89. 89Santa Anita - Los FicusLima region, Peru
    831.8×
  90. 90JakartaJakarta, Indonesia
    831.7×
  91. 90GdańskPomerania, Poland
    831.7×
  92. 92NegotinCentral Serbia, Serbia
    821.7×
  93. 92YongkangTaiwan, Taiwan
    821.7×
  94. 92PuliTaiwan, Taiwan
    821.7×
  95. 92HsinchuTaiwan, Taiwan
    821.7×
  96. 92ZhubeiTaiwan, Taiwan
    821.7×
  97. 92Iloilolow-cost sensorsWestern Visayas, Philippines
    821.7×
  98. 92TepicNayarit, Mexico
    821.7×
  99. 99TaichungTaiwan, Taiwan
    821.7×
  100. 99NantouTaiwan, Taiwan
    821.7×
  101. 101YuanlinTaiwan, Taiwan
    821.7×
  102. 101Chiayi CityTaiwan, Taiwan
    821.7×
  103. 101ChaozhouTaiwan, Taiwan
    821.7×
  104. 104TaipeiTaiwan, Taiwan
    821.7×
  105. 105NeiliTaiwan, Taiwan
    811.7×
  106. 105Silao de la VictoriaGuanajuato, Mexico
    811.7×
  107. 107ZhushanTaiwan, Taiwan
    801.7×
  108. 108BeigangTaiwan, Taiwan
    801.7×
  109. 108ChanghuaTaiwan, Taiwan
    801.7×
  110. 108Puente AltoSantiago Metropolitan, Chile
    801.7×
  111. 111GarcíaNuevo León, Mexico
    801.6×
  112. 112Si Maha PhotPrachin Buri, Thailand
    801.6×
  113. 112XinyingTaiwan, Taiwan
    801.6×
  114. 112MostaIl-Mosta, Malta
    801.6×
  115. 115TaibaoTaiwan, Taiwan
    801.6×
  116. 116ToufenTaiwan, Taiwan
    801.6×
  117. 116New Taipei CityTaipei, Taiwan
    801.6×
  118. 118Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    791.6×
  119. 118ZhudongTaiwan, Taiwan
    791.6×
  120. 118VallettaValletta, Malta
    791.6×
  121. 121UžiceCentral Serbia, Serbia
    791.6×
  122. 122NanNan, Thailand
    791.6×
  123. 123Khlong Sam WaBangkok, Thailand
    781.6×
  124. 124DaxiTaiwan, Taiwan
    781.6×
  125. 125ProkupljeCentral Serbia, Serbia
    781.6×
  126. 125SantiagoSantiago Metropolitan, Chile
    781.6×
  127. 127ŻabbarĦaż-Żabbar, Malta
    771.5×
  128. 127San Luis de la PazGuanajuato, Mexico
    771.5×
  129. 129XizhiTaipei, Taiwan
    771.5×
  130. 129CoronelBiobio, Chile
    771.5×
  131. 131MiaoliTaiwan, Taiwan
    771.5×
  132. 131Ciudad Benito JuárezNuevo León, Mexico
    771.5×
  133. 133ShulinTaipei, Taiwan
    771.5×
  134. 134LoeiLoei, Thailand
    761.5×
  135. 134Saphan SungBangkok, Thailand
    761.5×
  136. 136BorCentral Serbia, Serbia
    761.5×
  137. 136PhetchabunPhetchabun, Thailand
    761.5×
  138. 138HengchunTaiwan, Taiwan
    761.5×
  139. 138Puerto VarasLos Lagos Region, Chile
    761.5×
  140. 140Ban Samae DamBangkok, Thailand
    751.5×
  141. 140YujingTaiwan, Taiwan
    751.5×
  142. 140ConcónValparaiso, Chile
    751.5×
  143. 143Bang Pakonglow-cost sensorsChachoengsao, Thailand
    751.5×
  144. 144RancaguaO'Higgins Region, Chile
    751.5×
  145. 144Puerto MonttLos Lagos Region, Chile
    751.5×
  146. 146ĆuprijaCentral Serbia, Serbia
    751.5×
  147. 147KraljevoCentral Serbia, Serbia
    751.5×
  148. 148Sunland ParkNew Mexico, United States
    741.4×
  149. 149TocopillaAntofagasta, Chile
    741.4×
  150. 150LeskovacCentral Serbia, Serbia
    741.4×
  151. 150TalcahuanoBiobio, Chile
    741.4×
  152. 152Ban ChangRayong, Thailand
    741.4×
  153. 152TehuacánPuebla, Mexico
    741.4×
  154. 154RatchaburiRatchaburi, Thailand
    741.4×
  155. 154QuillotaValparaiso, Chile
    741.4×
  156. 156Lak SiBangkok, Thailand
    731.4×
  157. 157Lat KrabangBangkok, Thailand
    731.4×
  158. 158ToméBiobio, Chile
    731.4×
  159. 158TalcaMaule Region, Chile
    731.4×
  160. 160SaraburiSaraburi, Thailand
    731.4×
  161. 160BangkokBangkok, Thailand
    731.4×
  162. 160YilanTaiwan, Taiwan
    731.4×
  163. 160ElblągWarmia-Masuria, Poland
    731.4×
  164. 164KeelungTaiwan, Taiwan
    731.4×
  165. 164CauquenesMaule Region, Chile
    731.4×
  166. 166Ciudad NezahualcoyotlMéxico, Mexico
    721.4×
  167. 167PoznańGreater Poland, Poland
    721.4×
  168. 168PirotCentral Serbia, Serbia
    721.4×
  169. 168IrapuatoGuanajuato, Mexico
    721.4×
  170. 168Jardines de la SillaNuevo León, Mexico
    721.4×
  171. 171Stodůlkylow-cost sensorsPrague, Czechia
    721.3×
  172. 171SaltilloCoahuila, Mexico
    721.3×
  173. 171San Pedro de la PazBiobio, Chile
    721.3×
  174. 174Udon ThaniUdon Thani, Thailand
    711.3×
  175. 174Nakhon PathomNakhon Pathom, Thailand
    711.3×
  176. 176Tomaszów LubelskiLublin, Poland
    711.3×
  177. 176Accralow-cost sensorsGreater Accra, Ghana
    711.3×
  178. 176CoquimboCoquimbo Region, Chile
    711.3×
  179. 176MonterreyNuevo León, Mexico
    711.3×
  180. 176AguascalientesAguascalientes, Mexico
    711.3×
  181. 181NišCentral Serbia, Serbia
    711.3×
  182. 181DushanbeDushanbe, Tajikistan
    711.3×
  183. 181Khlong LuangPathum Thani, Thailand
    711.3×
  184. 181KinzanChungcheongnam-do, South Korea
    711.3×
  185. 185SmederevoCentral Serbia, Serbia
    711.3×
  186. 185Bang NaBangkok, Thailand
    711.3×
  187. 185Říčanylow-cost sensorsCentral Bohemia, Czechia
    711.3×
  188. 188ValjevoCentral Serbia, Serbia
    711.3×
  189. 189LiepājaLiepaja, Latvia
    701.3×
  190. 189CopiapóAtacama, Chile
    701.3×
  191. 191ŠabacCentral Serbia, Serbia
    701.3×
  192. 191Ciudad JuárezChihuahua, Mexico
    701.3×
  193. 193Phra PradaengSamut Prakan, Thailand
    701.3×
  194. 193ŚwiecieKujawsko-Pomorskie, Poland
    701.3×
  195. 193CuricóMaule Region, Chile
    701.3×
  196. 196SeonghwanChungcheongnam-do, South Korea
    701.3×
  197. 196Khan Na YaoBangkok, Thailand
    701.3×
  198. 198Nong Bua LamphuNong Bua Lamphu, Thailand
    701.3×
  199. 199Tepeji del Río de OcampoHidalgo, Mexico
    691.3×
  200. 199Mixquiahuala de JuárezHidalgo, Mexico
    691.3×

Top 200 of 2,457 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 15, 2025, smogrank.com/history/2025-04-15 (accessed 2 Oct 2026).

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