SmogRank / History / April 14, 2025

Most polluted cities on April 14, 2025

2,427 cities ranked by their average PM2.5 over the day; the worst was Santa Anita, Mexico, at 502.0 µg/m³. Each city's own local calendar day.

← Santa Anita 502.0 µg/m³ 500 µg/m³15 WHO 24-hour guideline
Every city ranked for April 14, 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. 1Santa AnitaJalisco, Mexico
    500+33.5×
  2. 2AguascalientesAguascalientes, Mexico
    1756.0×
  3. 3Wan ChaiWan Chai, Hong Kong
    1715.6×
  4. 4GuangzhouGuangdong, China
    1705.5×
  5. 5Tuen MunTuen Mun, Hong Kong
    1695.4×
  6. 6Mong KokYau Tsim Mong District, Hong Kong
    1695.4×
  7. 7VictoriaCentral and Western, Hong Kong
    1665.1×
  8. 8FanlingNorth District, Hong Kong
    1655.1×
  9. 9San Tung Chung HangIslands, Hong Kong
    1644.9×
  10. 10Sau Mau PingKwun Tong District, Hong Kong
    1594.5×
  11. 11DelhiDelhi, India
    1594.5×
  12. 12Kwai ChungKwai Tsing District, Hong Kong
    1594.4×
  13. 13Tai PoTai Po, Hong Kong
    1584.3×
  14. 14Tin Shui WaiYuen Long, Hong Kong
    1564.1×
  15. 15Sha TinSha Tin, Hong Kong
    1554.1×
  16. 16Tsuen WanTsuen Wan, Hong Kong
    1554.1×
  17. 17Sham Shui PoSham Shui Po District, Hong Kong
    1543.9×
  18. 18Islamabadlow-cost sensorsIslamabad, Pakistan
    1463.6×
  19. 19Quezon Citylow-cost sensorsNational Capital Region, Philippines
    1463.6×
  20. 20NacimientoBiobio, Chile
    1263.0×
  21. 21Zacatepec de HidalgoMorelos, Mexico
    1263.0×
  22. 22LinaresMaule Region, Chile
    1202.9×
  23. 23YasothonYasothon, Thailand
    1172.8×
  24. 24MukdahanMukdahan, Thailand
    1172.8×
  25. 25CuranilahueBiobio, Chile
    1122.7×
  26. 26Victoria de DurangoDurango, Mexico
    1112.6×
  27. 27JinchengFukien, Taiwan
    1102.6×
  28. 28HualpénBiobio, Chile
    1102.6×
  29. 29CoyhaiqueAysén, Chile
    1092.6×
  30. 30CuernavacaMorelos, Mexico
    1082.6×
  31. 30HualquiBiobio, Chile
    1082.6×
  32. 32KalasinKalasin, Thailand
    1052.5×
  33. 33Amnat CharoenAmnat Charoen, Thailand
    1032.4×
  34. 33TemucoAraucania, Chile
    1032.4×
  35. 35LimaLima Province, Peru
    1002.4×
  36. 36Los ÁngelesBiobio, Chile
    992.3×
  37. 37Hacienda Santa FeJalisco, Mexico
    972.3×
  38. 38NegotinCentral Serbia, Serbia
    962.2×
  39. 38Ubon RatchathaniUbon Ratchathani, Thailand
    962.2×
  40. 38VillarricaAraucania, Chile
    962.2×
  41. 41OsornoLos Lagos Region, Chile
    952.2×
  42. 42Buri RamBuriram, Thailand
    932.1×
  43. 43MagongTaiwan, Taiwan
    922.1×
  44. 44San CarlosÑuble, Chile
    922.1×
  45. 45CoronelBiobio, Chile
    912.1×
  46. 46ChillánÑuble, Chile
    912.0×
  47. 47Puerto AysénAysén, Chile
    902.0×
  48. 48TepicNayarit, Mexico
    902.0×
  49. 49ErlunTaiwan, Taiwan
    892.0×
  50. 50SurinSurin, Thailand
    881.9×
  51. 51Dubailow-cost sensorsDubai, United Arab Emirates
    881.9×
  52. 52VranjeCentral Serbia, Serbia
    881.9×
  53. 53Maha SarakhamMaha Sarakham, Thailand
    881.9×
  54. 53PueblaPuebla, Mexico
    881.9×
  55. 55LiepājaLiepaja, Latvia
    881.9×
  56. 55TalcaMaule Region, Chile
    881.9×
  57. 55TlaquepaqueJalisco, Mexico
    881.9×
  58. 58ProkupljeCentral Serbia, Serbia
    871.9×
  59. 58Suphan BuriSuphan Buri, Thailand
    871.9×
  60. 60ErlinTaiwan, Taiwan
    871.9×
  61. 60ChanghuaTaiwan, Taiwan
    871.9×
  62. 62BuziTaiwan, Taiwan
    861.9×
  63. 62Puente AltoSantiago Metropolitan, Chile
    861.9×
  64. 62La UniónLos Ríos Region, Chile
    861.9×
  65. 65ZaječarCentral Serbia, Serbia
    861.9×
  66. 66Roi EtRoi Et, Thailand
    851.8×
  67. 67RancaguaO'Higgins Region, Chile
    851.8×
  68. 68Istanbullow-cost sensorsIstanbul, Turkey
    851.8×
  69. 69CholulaPuebla, Mexico
    841.8×
  70. 70TaipeiTaiwan, Taiwan
    841.8×
  71. 70HsinchuTaiwan, Taiwan
    841.8×
  72. 72Novi PazarCentral Serbia, Serbia
    831.8×
  73. 73KanchanaburiKanchanaburi, Thailand
    831.8×
  74. 73YuanlinTaiwan, Taiwan
    831.8×
  75. 75Sakon NakhonSakon Nakhon, Thailand
    831.8×
  76. 75Nakhon RatchasimaNakhon Ratchasima, Thailand
    831.8×
  77. 77TainanTaiwan, Taiwan
    821.7×
  78. 77CallaoCallao, Peru
    821.7×
  79. 79YongkangTaiwan, Taiwan
    821.7×
  80. 80ValdiviaLos Ríos Region, Chile
    821.7×
  81. 81ZapopanJalisco, Mexico
    821.7×
  82. 81TaoyuanTaiwan, Taiwan
    821.7×
  83. 83BurrianaValencia, Spain
    811.7×
  84. 84ChaiyaphumChaiyaphum, Thailand
    811.7×
  85. 85UžiceCentral Serbia, Serbia
    811.7×
  86. 86SantiagoSantiago Metropolitan, Chile
    801.7×
  87. 87VentspilsVentspils, Latvia
    801.6×
  88. 87ValenciaValencia, Spain
    801.6×
  89. 87MünsterNorth Rhine-Westphalia, Germany
    801.6×
  90. 90TaibaoTaiwan, Taiwan
    801.6×
  91. 90TocopillaAntofagasta, Chile
    801.6×
  92. 92BeigangTaiwan, Taiwan
    801.6×
  93. 92GuadalajaraJalisco, Mexico
    801.6×
  94. 94TaichungTaiwan, Taiwan
    801.6×
  95. 94GdyniaPomerania, Poland
    801.6×
  96. 94TalcahuanoBiobio, Chile
    801.6×
  97. 97NanNan, Thailand
    791.6×
  98. 97ZhubeiTaiwan, Taiwan
    791.6×
  99. 99KaohsiungTakao, Taiwan
    791.6×
  100. 99Pasadenalow-cost sensorsCalifornia, United States
    791.6×
  101. 99New Taipei CityTaipei, Taiwan
    791.6×
  102. 102XizhiTaipei, Taiwan
    791.6×
  103. 103ToufenTaiwan, Taiwan
    781.6×
  104. 103XizhouTaiwan, Taiwan
    781.6×
  105. 103GdańskPomerania, Poland
    781.6×
  106. 106Vientianelow-cost sensorsVientiane Prefecture, Laos
    781.6×
  107. 106CuricóMaule Region, Chile
    781.6×
  108. 108LeskovacCentral Serbia, Serbia
    781.6×
  109. 109XinyingTaiwan, Taiwan
    781.6×
  110. 110WłocławekKujawsko-Pomorskie, Poland
    771.5×
  111. 110Ciudad JuárezChihuahua, Mexico
    771.5×
  112. 112KraljevoCentral Serbia, Serbia
    771.5×
  113. 113FengshanTakao, Taiwan
    771.5×
  114. 113CauquenesMaule Region, Chile
    771.5×
  115. 115TehuacánPuebla, Mexico
    771.5×
  116. 115QuillotaValparaiso, Chile
    771.5×
  117. 115Puerto MonttLos Lagos Region, Chile
    771.5×
  118. 118Yerevanlow-cost sensorsYerevan, Armenia
    771.5×
  119. 118DushanbeDushanbe, Tajikistan
    771.5×
  120. 118Lop BuriLopburi, Thailand
    771.5×
  121. 118HavířovMoravian-Silesian Region, Czechia
    771.5×
  122. 118Ciudad NezahualcoyotlMéxico, Mexico
    771.5×
  123. 123NantouTaiwan, Taiwan
    761.5×
  124. 124NeiliTaiwan, Taiwan
    751.5×
  125. 124San Luis de la PazGuanajuato, Mexico
    751.5×
  126. 126DouliuTaiwan, Taiwan
    751.5×
  127. 127Chiayi CityTaiwan, Taiwan
    741.4×
  128. 127OsnabrückLower Saxony, Germany
    741.4×
  129. 127LoznicaCentral Serbia, Serbia
    741.4×
  130. 127MiyakojimaOkinawa, Japan
    741.4×
  131. 131ShulinTaipei, Taiwan
    741.4×
  132. 131MiaoliTaiwan, Taiwan
    741.4×
  133. 133Chai NatChai Nat, Thailand
    731.4×
  134. 133ChaozhouTaiwan, Taiwan
    731.4×
  135. 133Iloilolow-cost sensorsWestern Visayas, Philippines
    731.4×
  136. 133San Francisco De BorjaLima region, Peru
    731.4×
  137. 137ValjevoCentral Serbia, Serbia
    731.4×
  138. 137TalaganteSantiago Metropolitan, Chile
    731.4×
  139. 139Khlong Sam WaBangkok, Thailand
    731.4×
  140. 140Nong Bua LamphuNong Bua Lamphu, Thailand
    731.4×
  141. 140Puerto VarasLos Lagos Region, Chile
    731.4×
  142. 142AlbanyGeorgia, United States
    721.4×
  143. 143Sing BuriSing Buri, Thailand
    721.4×
  144. 143Mixquiahuala de JuárezHidalgo, Mexico
    721.4×
  145. 143La SerenaCoquimbo Region, Chile
    721.4×
  146. 146CoquimboCoquimbo Region, Chile
    721.4×
  147. 147ZhudongTaiwan, Taiwan
    721.4×
  148. 147CopiapóAtacama, Chile
    721.4×
  149. 149ConcónValparaiso, Chile
    721.3×
  150. 150Si Sa KetSi Sa Ket, Thailand
    711.3×
  151. 150LitvínovÚstí nad Labem Region, Czechia
    711.3×
  152. 152PhichitPhichit, Thailand
    711.3×
  153. 152MalmöSkåne, Sweden
    711.3×
  154. 154HuntsvilleAlabama, United States
    711.3×
  155. 155KruševacCentral Serbia, Serbia
    711.3×
  156. 155Nakhon LuangPhra Nakhon Si Ayutthaya, Thailand
    711.3×
  157. 155GarcíaNuevo León, Mexico
    711.3×
  158. 158DaxiTaiwan, Taiwan
    711.3×
  159. 159ZhushanTaiwan, Taiwan
    711.3×
  160. 159KrotoszynGreater Poland, Poland
    711.3×
  161. 161Samut SakhonSamut Sakhon, Thailand
    701.3×
  162. 161YujingTaiwan, Taiwan
    701.3×
  163. 163RengoO'Higgins Region, Chile
    701.3×
  164. 164DattelnNorth Rhine-Westphalia, Germany
    701.3×
  165. 164TrentoTrentino-Alto Adige, Italy
    701.3×
  166. 166LoeiLoei, Thailand
    701.3×
  167. 166Viña del MarValparaiso, Chile
    701.3×
  168. 168AugustówPodlasie, Poland
    701.3×
  169. 168SanzhiTaipei, Taiwan
    701.3×
  170. 168Banja LukaSrpska, Bosnia and Herzegovina
    701.3×
  171. 168IrapuatoGuanajuato, Mexico
    701.3×
  172. 172Udon ThaniUdon Thani, Thailand
    691.3×
  173. 172HengchunTaiwan, Taiwan
    691.3×
  174. 172PraguePrague, Czechia
    691.3×
  175. 172MonterreyNuevo León, Mexico
    691.3×
  176. 176YilanTaiwan, Taiwan
    691.3×
  177. 177Debrecenlow-cost sensorsHajdú-Bihar, Hungary
    691.2×
  178. 177Stodůlkylow-cost sensorsPrague, Czechia
    691.2×
  179. 177KołobrzegWest Pomerania, Poland
    691.2×
  180. 177AntofagastaAntofagasta, Chile
    691.2×
  181. 177León de los AldamaGuanajuato, Mexico
    691.2×
  182. 177San Pedro de la PazBiobio, Chile
    691.2×
  183. 183EłkWarmia-Masuria, Poland
    691.2×
  184. 183KaliszGreater Poland, Poland
    691.2×
  185. 183ElblągWarmia-Masuria, Poland
    691.2×
  186. 186BielefeldNorth Rhine-Westphalia, Germany
    691.2×
  187. 186RoveretoTrentino-Alto Adige, Italy
    691.2×
  188. 188Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    681.2×
  189. 188Hondomachi-hondoKumamoto, Japan
    681.2×
  190. 190Addis AbabaAddis Ababa, Ethiopia
    681.2×
  191. 190BorkenNorth Rhine-Westphalia, Germany
    681.2×
  192. 192KeelungTaiwan, Taiwan
    681.2×
  193. 192ŠabacCentral Serbia, Serbia
    681.2×
  194. 192ToméBiobio, Chile
    681.2×
  195. 192QuinteroValparaiso, Chile
    681.2×
  196. 192Ciudad Benito JuárezNuevo León, Mexico
    681.2×
  197. 197KlaipėdaKlaipėda County, Lithuania
    681.2×
  198. 197ChennaiTamil Nadu, India
    681.2×
  199. 197ToruńKujawsko-Pomorskie, Poland
    681.2×
  200. 197ChiguayanteBiobio, Chile
    681.2×

Top 200 of 2,427 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 14, 2025, smogrank.com/history/2025-04-14 (accessed 2 Oct 2026).

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