SmogRank / History / July 27, 2025

Most polluted cities on July 27, 2025

2,449 cities ranked by their average PM2.5 over the day; the worst was Gujranwala, Pakistan, at 90.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during July 27, 2025. All episodes.

← Gujranwala 90.0 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for July 27, 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. 1Gujranwalalow-cost sensorsPunjab, Pakistan
    1756.0×
  2. 2ManamaManama, Bahrain
    1756.0×
  3. 3RengoO'Higgins Region, Chile
    1735.8×
  4. 4Sri GanganagarRajasthan, India
    1695.4×
  5. 5CoyhaiqueAysén, Chile
    1685.3×
  6. 6Lahorelow-cost sensorsPunjab, Pakistan
    1685.3×
  7. 7RancaguaO'Higgins Region, Chile
    1665.1×
  8. 8OsornoLos Lagos Region, Chile
    1655.1×
  9. 9KigaliKigali, Rwanda
    1645.0×
  10. 10SantiagoSantiago Metropolitan, Chile
    1604.6×
  11. 11Puente AltoSantiago Metropolitan, Chile
    1594.5×
  12. 12TalaganteSantiago Metropolitan, Chile
    1574.3×
  13. 13ArāriaBihar, India
    1564.2×
  14. 14JakartaJakarta, Indonesia
    1564.2×
  15. 15Faisalabadlow-cost sensorsPunjab, Pakistan
    1554.1×
  16. 16Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1533.9×
  17. 17CuricóMaule Region, Chile
    1523.8×
  18. 18Sialkotlow-cost sensorsPunjab, Pakistan
    1523.8×
  19. 19LinaresMaule Region, Chile
    1513.7×
  20. 20Prince AlbertSaskatchewan, Canada
    1493.7×
  21. 21LudhianaPunjab, India
    1483.6×
  22. 22NacimientoBiobio, Chile
    1453.6×
  23. 23Gadag-BetageriKarnataka, India
    1393.4×
  24. 24DushanbeDushanbe, Tajikistan
    1363.3×
  25. 25SangāreddiTelangana, India
    1283.1×
  26. 26OtwockMazovia, Poland
    1273.1×
  27. 27SamāstipurBihar, India
    1273.1×
  28. 28BawānaDelhi, India
    1263.1×
  29. 29Islamabadlow-cost sensorsIslamabad, Pakistan
    1253.0×
  30. 29Puerto MonttLos Lagos Region, Chile
    1253.0×
  31. 31L'Ancienne-LoretteQuebec, Canada
    1243.0×
  32. 32Rawalpindilow-cost sensorsPunjab, Pakistan
    1233.0×
  33. 33AlbanyNew York, United States
    1233.0×
  34. 34QuilpuéValparaiso, Chile
    1222.9×
  35. 35ChillánÑuble, Chile
    1212.9×
  36. 36TalcaMaule Region, Chile
    1182.8×
  37. 37QuébecQuebec, Canada
    1162.8×
  38. 38Lexingtonlow-cost sensorsMassachusetts, United States
    1152.7×
  39. 39Multanlow-cost sensorsPunjab, Pakistan
    1142.7×
  40. 40ValdiviaLos Ríos Region, Chile
    1132.7×
  41. 41RangioraCanterbury, New Zealand
    1112.6×
  42. 42Puerto VarasLos Lagos Region, Chile
    1112.6×
  43. 43HualpénBiobio, Chile
    1092.6×
  44. 44LoniUttar Pradesh, India
    1092.6×
  45. 44KhannaPunjab, India
    1092.6×
  46. 46ShawiniganQuebec, Canada
    1072.5×
  47. 47VijayawadaAndhra Pradesh, India
    1032.4×
  48. 47TirupparangunramTamil Nadu, India
    1032.4×
  49. 49SasarāmBihar, India
    1022.4×
  50. 50Los ÁngelesBiobio, Chile
    1012.4×
  51. 51SpringfieldMassachusetts, United States
    1002.4×
  52. 52Trois-RivièresQuebec, Canada
    1002.4×
  53. 53PittsfieldMassachusetts, United States
    992.3×
  54. 54SewellNew Jersey, United States
    992.3×
  55. 55HartfordConnecticut, United States
    992.3×
  56. 56QuillotaValparaiso, Chile
    992.3×
  57. 57GreenfieldMassachusetts, United States
    982.3×
  58. 58JalandharPunjab, India
    982.3×
  59. 59KeeneNew Hampshire, United States
    972.3×
  60. 60Sorel-TracyQuebec, Canada
    962.2×
  61. 61DorvalQuebec, Canada
    962.2×
  62. 62NarelaDelhi, India
    962.2×
  63. 63ChristchurchCanterbury, New Zealand
    952.2×
  64. 64WaterburyConnecticut, United States
    952.2×
  65. 65New York CityNew York, United States
    952.2×
  66. 66RourkelaOdisha, India
    942.1×
  67. 67TemucoAraucania, Chile
    942.1×
  68. 68BhelaiChhattisgarh, India
    942.1×
  69. 68DanburyConnecticut, United States
    942.1×
  70. 68SherbrookeQuebec, Canada
    942.1×
  71. 71NagaonAssam, India
    932.1×
  72. 71MontréalQuebec, Canada
    932.1×
  73. 73Temalow-cost sensorsGreater Accra, Ghana
    932.1×
  74. 74Dubailow-cost sensorsDubai, United Arab Emirates
    932.1×
  75. 75GranbyQuebec, Canada
    922.1×
  76. 76San CarlosÑuble, Chile
    922.1×
  77. 77New HavenConnecticut, United States
    922.1×
  78. 78AshburtonCanterbury, New Zealand
    922.1×
  79. 79AjmerRajasthan, India
    912.1×
  80. 79North ChicopeeMassachusetts, United States
    912.1×
  81. 81KadapaAndhra Pradesh, India
    912.0×
  82. 81HualquiBiobio, Chile
    912.0×
  83. 83PāliRajasthan, India
    912.0×
  84. 83BaddiHimachal Pradesh, India
    912.0×
  85. 85NalbāriAssam, India
    912.0×
  86. 85Nepeanlow-cost sensorsOntario, Canada
    912.0×
  87. 87PennsaukenNew Jersey, United States
    912.0×
  88. 87PatersonNew Jersey, United States
    912.0×
  89. 89BridgeportConnecticut, United States
    902.0×
  90. 90BrossardQuebec, Canada
    902.0×
  91. 91ConcónValparaiso, Chile
    902.0×
  92. 91Wadgaon KolhatiMaharashtra, India
    902.0×
  93. 93Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada
    902.0×
  94. 94NajafgarhDelhi, India
    892.0×
  95. 95HyderabadTelangana, India
    892.0×
  96. 96GwaliorMadhya Pradesh, India
    892.0×
  97. 97White PlainsNew York, United States
    881.9×
  98. 98DerryNew Hampshire, United States
    881.9×
  99. 98Rouyn-NorandaQuebec, Canada
    881.9×
  100. 100Istanbullow-cost sensorsIstanbul, Turkey
    881.9×
  101. 101AnantapurAndhra Pradesh, India
    881.9×
  102. 101CuranilahueBiobio, Chile
    881.9×
  103. 101HaverhillMassachusetts, United States
    881.9×
  104. 101Fort LeeNew Jersey, United States
    881.9×
  105. 105DrummondvilleQuebec, Canada
    871.9×
  106. 106JaipurRajasthan, India
    871.9×
  107. 107CoronelBiobio, Chile
    871.9×
  108. 108Karachilow-cost sensorsSindh, Pakistan
    861.9×
  109. 109TaupoWaikato Region, New Zealand
    861.9×
  110. 109SaguenayQuebec, Canada
    861.9×
  111. 109RandolphNew Jersey, United States
    861.9×
  112. 112LindenNew Jersey, United States
    861.9×
  113. 113Ganghwa-gunIncheon, South Korea
    861.8×
  114. 113EwingNew Jersey, United States
    861.8×
  115. 115RoparPunjab, India
    851.8×
  116. 115New BrunswickNew Jersey, United States
    851.8×
  117. 115RutlandVermont, United States
    851.8×
  118. 118BrocktonMassachusetts, United States
    851.8×
  119. 118LowellMassachusetts, United States
    851.8×
  120. 118BensalemPennsylvania, United States
    851.8×
  121. 121DelhiDelhi, India
    851.8×
  122. 121ElizabethNew Jersey, United States
    851.8×
  123. 123BayonneNew Jersey, United States
    851.8×
  124. 123NorristownPennsylvania, United States
    851.8×
  125. 125La UniónLos Ríos Region, Chile
    841.8×
  126. 125MilfordMassachusetts, United States
    841.8×
  127. 127MuzaffarnagarUttar Pradesh, India
    841.8×
  128. 127QuinteroValparaiso, Chile
    841.8×
  129. 127CauquenesMaule Region, Chile
    841.8×
  130. 127Jersey CityNew Jersey, United States
    841.8×
  131. 127BhiwadiRajasthan, India
    841.8×
  132. 132WorcesterMassachusetts, United States
    831.8×
  133. 133AriyalūrTamil Nadu, India
    831.8×
  134. 133HolbrookNew York, United States
    831.8×
  135. 133LebanonPennsylvania, United States
    831.8×
  136. 136TrentonNew Jersey, United States
    831.7×
  137. 137TirupatiAndhra Pradesh, India
    821.7×
  138. 137PatnaBihar, India
    821.7×
  139. 137PhiladelphiaPennsylvania, United States
    821.7×
  140. 140RacibórzSilesia, Poland
    821.7×
  141. 141BostonMassachusetts, United States
    821.7×
  142. 142New CityNew York, United States
    821.7×
  143. 143New LondonConnecticut, United States
    821.7×
  144. 143Saint-Jean-sur-RichelieuQuebec, Canada
    821.7×
  145. 145SaskatoonSaskatchewan, Canada
    811.7×
  146. 146TonkRajasthan, India
    811.7×
  147. 146LynnMassachusetts, United States
    811.7×
  148. 148Skarżysko-KamiennaŚwiętokrzyskie, Poland
    811.7×
  149. 148TimaruCanterbury, New Zealand
    811.7×
  150. 148FraminghamMassachusetts, United States
    811.7×
  151. 151NewburghNew York, United States
    801.7×
  152. 152PithampurMadhya Pradesh, India
    801.7×
  153. 153Changchunlow-cost sensorsJilin, China
    801.6×
  154. 154ChesterPennsylvania, United States
    801.6×
  155. 155CallaoCallao, Peru
    801.6×
  156. 156TocopillaAntofagasta, Chile
    791.6×
  157. 157HājīpurBihar, India
    791.6×
  158. 158Bahawalpurlow-cost sensorsPunjab, Pakistan
    791.6×
  159. 158MalegaonMaharashtra, India
    791.6×
  160. 158ChandigarhChandigarh, India
    791.6×
  161. 158Quezon Citylow-cost sensorsNational Capital Region, Philippines
    791.6×
  162. 158PleasantvilleNew Jersey, United States
    791.6×
  163. 158Santa Anita - Los FicusLima region, Peru
    791.6×
  164. 164WilmingtonDelaware, United States
    781.6×
  165. 164QuincyMassachusetts, United States
    781.6×
  166. 166Sept-ÎlesQuebec, Canada
    781.6×
  167. 167Atlantic CityNew Jersey, United States
    781.6×
  168. 168South VinelandNew Jersey, United States
    771.6×
  169. 169PortlandMaine, United States
    771.5×
  170. 170Quettalow-cost sensorsBalochistan, Pakistan
    771.5×
  171. 170KalyānMaharashtra, India
    771.5×
  172. 170NoidaUttar Pradesh, India
    771.5×
  173. 173MéridaYucatán, Mexico
    771.5×
  174. 173Wake Forestlow-cost sensorsNorth Carolina, United States
    771.5×
  175. 173PortsmouthNew Hampshire, United States
    771.5×
  176. 176UdaipurRajasthan, India
    771.5×
  177. 176PanvelMaharashtra, India
    771.5×
  178. 176AricaArica y Parinacota Region, Chile
    771.5×
  179. 176NewarkDelaware, United States
    771.5×
  180. 180ThāneMaharashtra, India
    761.5×
  181. 181KotaRajasthan, India
    761.5×
  182. 181DādriUttar Pradesh, India
    761.5×
  183. 183KhurjaUttar Pradesh, India
    761.5×
  184. 184Greater SudburyOntario, Canada
    761.5×
  185. 185VijayapuraKarnataka, India
    761.5×
  186. 185IncheonIncheon, South Korea
    761.5×
  187. 187Accralow-cost sensorsGreater Accra, Ghana
    751.5×
  188. 187San Francisco De BorjaLima region, Peru
    751.5×
  189. 189GandhinagarGujarat, India
    751.5×
  190. 189BadlapurMaharashtra, India
    751.5×
  191. 189Dunedinlow-cost sensorsOtago, New Zealand
    751.5×
  192. 192KanpurUttar Pradesh, India
    751.5×
  193. 193JalorRajasthan, India
    741.4×
  194. 193ProvidenceRhode Island, United States
    741.4×
  195. 195AugustaMaine, United States
    741.4×
  196. 196San Francisco TlalcilalcalpanMéxico, Mexico
    741.4×
  197. 197OurenseGalicia, Spain
    741.4×
  198. 198BangorMaine, United States
    741.4×
  199. 198LancasterPennsylvania, United States
    741.4×
  200. 200PatiālaPunjab, India
    741.4×

Top 200 of 2,449 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 27, 2025, smogrank.com/history/2025-07-27 (accessed 2 Oct 2026).

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