SmogRank / History / July 30, 2025

Most polluted cities on July 30, 2025

2,558 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 160.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 30, 2025. All episodes.

← Coyhaique 160.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for July 30, 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. 1CoyhaiqueAysén, Chile
    23510.7×
  2. 2VillarricaAraucania, Chile
    1937.7×
  3. 3OotyTamil Nadu, India
    1917.5×
  4. 4MarquetteMichigan, United States
    1917.5×
  5. 5SuperiorWisconsin, United States
    1887.2×
  6. 6ArāriaBihar, India
    1826.6×
  7. 7DuluthMinnesota, United States
    1766.1×
  8. 8Green BayWisconsin, United States
    1725.7×
  9. 9Sri GanganagarRajasthan, India
    1705.5×
  10. 10AppletonWisconsin, United States
    1685.3×
  11. 11BathindaPunjab, India
    1655.1×
  12. 12Sault Ste. MarieOntario, Canada
    1624.8×
  13. 13KigaliKigali, Rwanda
    1614.7×
  14. 13CuddaloreTamil Nadu, India
    1614.7×
  15. 15DhaulpurRajasthan, India
    1584.3×
  16. 15BurgosCastille and León, Spain
    1584.3×
  17. 17Greater SudburyOntario, Canada
    1564.2×
  18. 18UnderaGujarat, India
    1564.1×
  19. 19Dubailow-cost sensorsDubai, United Arab Emirates
    1544.0×
  20. 20RengoO'Higgins Region, Chile
    1543.9×
  21. 20Eau ClaireWisconsin, United States
    1543.9×
  22. 22ChāpraBihar, India
    1533.9×
  23. 23West FargoNorth Dakota, United States
    1533.9×
  24. 24Nepeanlow-cost sensorsOntario, Canada
    1523.8×
  25. 25MinneapolisMinnesota, United States
    1473.6×
  26. 26Faisalabadlow-cost sensorsPunjab, Pakistan
    1463.6×
  27. 27BurnsvilleMinnesota, United States
    1463.6×
  28. 28TiruppurTamil Nadu, India
    1453.6×
  29. 29Saint CloudMinnesota, United States
    1453.6×
  30. 30Saint PaulMinnesota, United States
    1453.6×
  31. 31North BayOntario, Canada
    1443.5×
  32. 32RancaguaO'Higgins Region, Chile
    1403.4×
  33. 33NacimientoBiobio, Chile
    1383.4×
  34. 34MankatoMinnesota, United States
    1363.3×
  35. 35BlaineMinnesota, United States
    1363.3×
  36. 36ShakopeeMinnesota, United States
    1353.3×
  37. 37Prince AlbertSaskatchewan, Canada
    1343.3×
  38. 38SasarāmBihar, India
    1293.1×
  39. 39Saint MichaelMinnesota, United States
    1283.1×
  40. 40Apple ValleyMinnesota, United States
    1273.1×
  41. 41Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa
    1263.0×
  42. 42OtwockMazovia, Poland
    1253.0×
  43. 43VapiGujarat, India
    1233.0×
  44. 44PāliRajasthan, India
    1212.9×
  45. 45SantiagoSantiago Metropolitan, Chile
    1212.9×
  46. 45CuricóMaule Region, Chile
    1212.9×
  47. 47PatnaBihar, India
    1212.9×
  48. 48TalaganteSantiago Metropolitan, Chile
    1202.9×
  49. 49Puente AltoSantiago Metropolitan, Chile
    1192.9×
  50. 50HualpénBiobio, Chile
    1182.8×
  51. 51Rouyn-NorandaQuebec, Canada
    1172.8×
  52. 52DushanbeDushanbe, Tajikistan
    1172.8×
  53. 52RochesterMinnesota, United States
    1172.8×
  54. 54OttawaOntario, Canada
    1152.7×
  55. 55Lahorelow-cost sensorsPunjab, Pakistan
    1122.7×
  56. 55LinaresMaule Region, Chile
    1122.7×
  57. 57RasapūdipalemAndhra Pradesh, India
    1112.6×
  58. 58UdaipurRajasthan, India
    1112.6×
  59. 58AberdeenSouth Dakota, United States
    1112.6×
  60. 60ManamaManama, Bahrain
    1112.6×
  61. 61Oconomowoclow-cost sensorsWisconsin, United States
    1102.6×
  62. 62L'Ancienne-LoretteQuebec, Canada
    1092.6×
  63. 63ReginaSaskatchewan, Canada
    1092.6×
  64. 64DausaRajasthan, India
    1082.6×
  65. 65AlangadKerala, India
    1082.5×
  66. 66PithampurMadhya Pradesh, India
    1072.5×
  67. 67BhiwadiRajasthan, India
    1072.5×
  68. 68VijayawadaAndhra Pradesh, India
    1062.5×
  69. 69Gujranwalalow-cost sensorsPunjab, Pakistan
    1032.4×
  70. 70Los ÁngelesBiobio, Chile
    1012.4×
  71. 71AnantapurAndhra Pradesh, India
    1012.4×
  72. 72QuébecQuebec, Canada
    1002.4×
  73. 73TalcaMaule Region, Chile
    1002.4×
  74. 74SangāreddiTelangana, India
    972.3×
  75. 75Addis AbabaAddis Ababa, Ethiopia
    972.3×
  76. 75Multanlow-cost sensorsPunjab, Pakistan
    972.3×
  77. 75HājīpurBihar, India
    972.3×
  78. 78AhmedabadGujarat, India
    972.2×
  79. 79TonkRajasthan, India
    962.2×
  80. 79CornwallOntario, Canada
    962.2×
  81. 81BānswāraRajasthan, India
    962.2×
  82. 82BhiwandiMaharashtra, India
    952.2×
  83. 83ChittorgarhRajasthan, India
    952.2×
  84. 84DorvalQuebec, Canada
    952.2×
  85. 84QuthbullapurTelangana, India
    952.2×
  86. 86AntofagastaAntofagasta, Chile
    952.2×
  87. 87NagaonAssam, India
    942.2×
  88. 87KadapaAndhra Pradesh, India
    942.2×
  89. 87HualquiBiobio, Chile
    942.2×
  90. 90BhelaiChhattisgarh, India
    942.1×
  91. 91WatertownSouth Dakota, United States
    932.1×
  92. 92BaddiHimachal Pradesh, India
    932.1×
  93. 93JaipurRajasthan, India
    932.1×
  94. 93KannurKerala, India
    932.1×
  95. 95Sorel-TracyQuebec, Canada
    932.1×
  96. 95MandideepMadhya Pradesh, India
    932.1×
  97. 97TangjinChungcheongnam-do, South Korea
    932.1×
  98. 98IncheonIncheon, South Korea
    922.1×
  99. 99ThrissurKerala, India
    922.1×
  100. 99RājsamandRajasthan, India
    922.1×
  101. 99BoryeongChungcheongnam-do, South Korea
    922.1×
  102. 102NāgaurRajasthan, India
    912.1×
  103. 103MontréalQuebec, Canada
    912.0×
  104. 104GayaBihar, India
    912.0×
  105. 104JakartaJakarta, Indonesia
    912.0×
  106. 104SaguenayQuebec, Canada
    912.0×
  107. 104ShawiniganQuebec, Canada
    912.0×
  108. 108NalbāriAssam, India
    902.0×
  109. 108AmritsarPunjab, India
    902.0×
  110. 110AjmerRajasthan, India
    902.0×
  111. 110ChillánÑuble, Chile
    902.0×
  112. 110MilwaukeeWisconsin, United States
    902.0×
  113. 113SaharsaBihar, India
    902.0×
  114. 113LudhianaPunjab, India
    902.0×
  115. 115DūngarpurRajasthan, India
    902.0×
  116. 116Bay CityMichigan, United States
    902.0×
  117. 117CuranilahueBiobio, Chile
    892.0×
  118. 118MahādMaharashtra, India
    892.0×
  119. 118NandriRajasthan, India
    892.0×
  120. 120CauquenesMaule Region, Chile
    892.0×
  121. 121Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    881.9×
  122. 122Hwaseong-siGyeonggi-do, South Korea
    881.9×
  123. 122Wadgaon KolhatiMaharashtra, India
    881.9×
  124. 124BarrieOntario, Canada
    881.9×
  125. 125QuilpuéValparaiso, Chile
    881.9×
  126. 126SamāstipurBihar, India
    881.9×
  127. 127Karachilow-cost sensorsSindh, Pakistan
    871.9×
  128. 127GunsanJeollabuk-do, South Korea
    871.9×
  129. 127Puerto AysénAysén, Chile
    871.9×
  130. 130KhannaPunjab, India
    871.9×
  131. 130Ansan-siGyeonggi-do, South Korea
    871.9×
  132. 132MungerBihar, India
    861.9×
  133. 133WaukeshaWisconsin, United States
    861.9×
  134. 134BadlapurMaharashtra, India
    851.8×
  135. 135Taesal-liChungcheongnam-do, South Korea
    851.8×
  136. 135BrookingsSouth Dakota, United States
    851.8×
  137. 135BrossardQuebec, Canada
    851.8×
  138. 138TiruchirappalliTamil Nadu, India
    851.8×
  139. 139Istanbullow-cost sensorsIstanbul, Turkey
    851.8×
  140. 140MadisonWisconsin, United States
    841.8×
  141. 141Gimpo-siGyeonggi-do, South Korea
    841.8×
  142. 142NajafgarhDelhi, India
    841.8×
  143. 142SeosanChungcheongnam-do, South Korea
    841.8×
  144. 142QuillotaValparaiso, Chile
    841.8×
  145. 145Quezon Citylow-cost sensorsNational Capital Region, Philippines
    841.8×
  146. 146DewasMadhya Pradesh, India
    831.8×
  147. 146San Francisco TlalcilalcalpanMéxico, Mexico
    831.8×
  148. 148Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    831.8×
  149. 148PratāpgarhRajasthan, India
    831.8×
  150. 150JalorRajasthan, India
    831.7×
  151. 151KalyānMaharashtra, India
    831.7×
  152. 151ĀsansolWest Bengal, India
    831.7×
  153. 151AllistonOntario, Canada
    831.7×
  154. 154SirohiRajasthan, India
    821.7×
  155. 154SaskatoonSaskatchewan, Canada
    821.7×
  156. 156Sialkotlow-cost sensorsPunjab, Pakistan
    821.7×
  157. 156OsornoLos Lagos Region, Chile
    821.7×
  158. 156WindsorOntario, Canada
    821.7×
  159. 159ThāneMaharashtra, India
    821.7×
  160. 159MuzaffarpurBihar, India
    821.7×
  161. 159GandhinagarGujarat, India
    821.7×
  162. 162Temalow-cost sensorsGreater Accra, Ghana
    821.7×
  163. 163Wan ChaiWan Chai, Hong Kong
    821.7×
  164. 164NewmarketOntario, Canada
    811.7×
  165. 165YesanChungcheongnam-do, South Korea
    811.7×
  166. 167ArrahBihar, India
    801.7×
  167. 167San CarlosÑuble, Chile
    801.7×
  168. 169BawānaDelhi, India
    801.6×
  169. 170GranbyQuebec, Canada
    801.6×
  170. 170Santa Anita - Los FicusLima region, Peru
    801.6×
  171. 172San Francisco De BorjaLima region, Peru
    801.6×
  172. 173DelhiDelhi, India
    801.6×
  173. 173KingstonOntario, Canada
    801.6×
  174. 175ChūruRajasthan, India
    791.6×
  175. 175CallaoCallao, Peru
    791.6×
  176. 175Trois-RivièresQuebec, Canada
    791.6×
  177. 178BuanJeollabuk-do, South Korea
    791.6×
  178. 179MuzaffarnagarUttar Pradesh, India
    791.6×
  179. 180Iloilolow-cost sensorsWestern Visayas, Philippines
    791.6×
  180. 180South MilwaukeeWisconsin, United States
    791.6×
  181. 180SarniaOntario, Canada
    791.6×
  182. 183BellevilleOntario, Canada
    781.6×
  183. 184RānīganjWest Bengal, India
    781.6×
  184. 184HongseongChungcheongnam-do, South Korea
    781.6×
  185. 186KotaRajasthan, India
    781.6×
  186. 187Bahawalpurlow-cost sensorsPunjab, Pakistan
    781.6×
  187. 188PyeongtaekGyeonggi-do, South Korea
    781.6×
  188. 188UliyazhathuraKerala, India
    781.6×
  189. 190AricaArica y Parinacota Region, Chile
    771.5×
  190. 191Grand RapidsMichigan, United States
    771.5×
  191. 192CoronelBiobio, Chile
    771.5×
  192. 193DhuleMaharashtra, India
    771.5×
  193. 193TemucoAraucania, Chile
    771.5×
  194. 195PeterboroughOntario, Canada
    771.5×
  195. 196BhilwaraRajasthan, India
    761.5×
  196. 196XonacatlánMéxico, Mexico
    761.5×
  197. 196ValdiviaLos Ríos Region, Chile
    761.5×
  198. 196Port HuronMichigan, United States
    761.5×
  199. 196MiltonOntario, Canada
    761.5×

Top 200 of 2,558 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, July 30, 2025, smogrank.com/history/2025-07-30 (accessed 3 Oct 2026).

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