SmogRank / History / July 17, 2025
Most polluted cities on July 17, 2025
2,513 cities ranked by their average PM2.5 over the day; the worst was Osorno, Chile, at 135.5 µg/m³. Each city's own local calendar day.
- Maharashtra and Karnataka, India, July 202517 to 19 July 2025, 3 days12 cities96Surat
- North-western Canada, July 202514 to 17 July 2025, 4 days10 cities116Saskatoon
Bad-air episodes during July 17, 2025. All episodes.
← Osorno 135.5 µg/m³
100 µg/m³15 WHO 24-hour guideline
- 1OsornoLos Lagos Region, Chile 2119.0×
- 2TemucoAraucania, Chile 2018.4×
- 3VillarricaAraucania, Chile 1867.0×
- 4NacimientoBiobio, Chile 1725.7×
- 5KigaliKigali, Rwanda 1655.1×
- 6SuratGujarat, India 1655.0×
- 7BhelaiChhattisgarh, India 1645.0×
- 8CoronelBiobio, Chile 1614.7×
- 9SantiagoSantiago Metropolitan, Chile 1584.4×
- 10PāliRajasthan, India 1584.3×
- 11La UniónLos Ríos Region, Chile 1564.2×
- 12JodaOdisha, India 1564.2×
- 13Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa 1564.2×
- 14TalaganteSantiago Metropolitan, Chile 1564.1×
- 15Faisalabadlow-cost sensorsPunjab, Pakistan 1554.1×
- 16ValdiviaLos Ríos Region, Chile 1544.0×
- 17CuricóMaule Region, Chile 1544.0×
- 18Dubailow-cost sensorsDubai, United Arab Emirates 1544.0×
- 19SingrauliMadhya Pradesh, India 1533.9×
- 20ManamaManama, Bahrain 1533.9×
- 21Puente AltoSantiago Metropolitan, Chile 1513.7×
- 22HassanKarnataka, India 1493.7×
- 23RancaguaO'Higgins Region, Chile 1473.6×
- 24CoyhaiqueAysén, Chile 1463.6×
- 25Gujranwalalow-cost sensorsPunjab, Pakistan 1453.6×
- 26BānswāraRajasthan, India 1453.6×
- 27HualquiBiobio, Chile 1443.5×
- 28CuranilahueBiobio, Chile 1403.4×
- 29LinaresMaule Region, Chile 1393.4×
- 30DhaulpurRajasthan, India 1373.3×
- 31Lahorelow-cost sensorsPunjab, Pakistan 1343.3×
- 32SaugorMadhya Pradesh, India 1333.2×
- 33RengoO'Higgins Region, Chile 1313.2×
- 34SangāreddiTelangana, India 1293.1×
- 35DushanbeDushanbe, Tajikistan 1253.0×
- 36MalegaonMaharashtra, India 1243.0×
- 37UdaipurRajasthan, India 1233.0×
- 38PithampurMadhya Pradesh, India 1233.0×
- 39Santa LucíaCanary Islands, Spain 1212.9×
- 40GummidipundiTamil Nadu, India 1202.9×
- 41GobindgarhPunjab, India 1192.9×
- 42QuilpuéValparaiso, Chile 1192.9×
- 43JakartaJakarta, Indonesia 1192.9×
- 44Sialkotlow-cost sensorsPunjab, Pakistan 1192.8×
- 45EdmontonAlberta, Canada 1182.8×
- 46CholulaPuebla, Mexico 1162.8×
- 47Ciudad Benito JuárezNuevo León, Mexico 1102.6×
- 48DūngarpurRajasthan, India 1102.6×
- 49ChittoorAndhra Pradesh, India 1102.6×
- 50HualpénBiobio, Chile 1092.6×
- 51SamāstipurBihar, India 1092.6×
- 52NagaonAssam, India 1082.6×
- 53KotaRajasthan, India 1082.6×
- 54Duque de CaxiasRio de Janeiro, Brazil 1082.5×
- 55KadapaAndhra Pradesh, India 1062.5×
- 56GandhinagarGujarat, India 1062.5×
- 57LoniUttar Pradesh, India 1042.4×
- 58AhmedabadGujarat, India 1032.4×
- 58NaharlagunArunachal Pradesh, India 1032.4×
- 60VelloreTamil Nadu, India 1022.4×
- 60JaipurRajasthan, India 1022.4×
- 62Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 1012.4×
- 63AnantapurAndhra Pradesh, India 1012.4×
- 64VijayawadaAndhra Pradesh, India 1002.4×
- 65RājgīrBihar, India 1002.4×
- 65BhiwandiMaharashtra, India 1002.4×
- 67CallaoCallao, Peru 1002.3×
- 68PratāpgarhRajasthan, India 992.3×
- 68GarcíaNuevo León, Mexico 992.3×
- 68Santa Anita - Los FicusLima region, Peru 992.3×
- 71SāngliMaharashtra, India 982.3×
- 72Bahawalpurlow-cost sensorsPunjab, Pakistan 982.3×
- 73CauquenesMaule Region, Chile 982.3×
- 74Puerto VarasLos Lagos Region, Chile 972.3×
- 75AmravatiMaharashtra, India 972.2×
- 75CoquimboCoquimbo Region, Chile 972.2×
- 77MonterreyNuevo León, Mexico 962.2×
- 78RājsamandRajasthan, India 962.2×
- 79JalorRajasthan, India 962.2×
- 79ChiguayanteBiobio, Chile 962.2×
- 81Rawalpindilow-cost sensorsPunjab, Pakistan 952.2×
- 81Cadereyta JiménezNuevo León, Mexico 952.2×
- 83San CarlosÑuble, Chile 952.2×
- 84KhannaPunjab, India 952.2×
- 84VapiGujarat, India 952.2×
- 86AtlixcoPuebla, Mexico 952.2×
- 86Puerto AysénAysén, Chile 952.2×
- 88SirohiRajasthan, India 952.2×
- 89Prince AlbertSaskatchewan, Canada 942.2×
- 90ConcepciónBiobio, Chile 942.2×
- 91Sherwood ParkAlberta, Canada 942.1×
- 92TiruchirappalliTamil Nadu, India 942.1×
- 92NajafgarhDelhi, India 942.1×
- 92QuillotaValparaiso, Chile 942.1×
- 92La SerenaCoquimbo Region, Chile 942.1×
- 96RatlāmMadhya Pradesh, India 932.1×
- 96MahādMaharashtra, India 932.1×
- 98KishanganjBihar, India 932.1×
- 98ConcónValparaiso, Chile 932.1×
- 100ChittorgarhRajasthan, India 932.1×
- 101San Francisco De BorjaLima region, Peru 922.1×
- 102XonacatlánMéxico, Mexico 922.1×
- 103KalaburagiKarnataka, India 922.1×
- 104PanvelMaharashtra, India 912.1×
- 105HyderabadTelangana, India 912.0×
- 106NalbāriAssam, India 912.0×
- 106San Francisco TlalcilalcalpanMéxico, Mexico 912.0×
- 106TalcaMaule Region, Chile 912.0×
- 109KolhāpurMaharashtra, India 902.0×
- 110QuinteroValparaiso, Chile 902.0×
- 110Los ÁngelesBiobio, Chile 902.0×
- 110Wadgaon KolhatiMaharashtra, India 902.0×
- 113ChāndaMaharashtra, India 902.0×
- 114BaddiHimachal Pradesh, India 892.0×
- 115BhāgalpurBihar, India 892.0×
- 116DhuleMaharashtra, India 892.0×
- 117Puerto MonttLos Lagos Region, Chile 892.0×
- 118Addis AbabaAddis Ababa, Ethiopia 892.0×
- 118TalcahuanoBiobio, Chile 892.0×
- 120ChillánÑuble, Chile 881.9×
- 121JaisalmerRajasthan, India 881.9×
- 121TehuacánPuebla, Mexico 881.9×
- 123Accralow-cost sensorsGreater Accra, Ghana 871.9×
- 123TuxtlaChiapas, Mexico 871.9×
- 123St. AlbertAlberta, Canada 871.9×
- 123AlangadKerala, India 871.9×
- 127BārmerRajasthan, India 871.9×
- 127AurangabadMaharashtra, India 871.9×
- 127ToméBiobio, Chile 871.9×
- 130PuneMaharashtra, India 871.9×
- 131Santa CatarinaNuevo León, Mexico 861.9×
- 132RānīganjWest Bengal, India 861.9×
- 133KannurKerala, India 861.9×
- 133San Martin Texmelucan de LabastidaPuebla, Mexico 861.9×
- 135NagpurMaharashtra, India 861.8×
- 135GhāziābādUttar Pradesh, India 861.8×
- 135CopiapóAtacama, Chile 861.8×
- 135LimaLima Province, Peru 861.8×
- 135Red DeerAlberta, Canada 861.8×
- 140IndoreMadhya Pradesh, India 851.8×
- 141RasapūdipalemAndhra Pradesh, India 851.8×
- 141KalyānMaharashtra, India 851.8×
- 143TonkRajasthan, India 851.8×
- 144Istanbullow-cost sensorsIstanbul, Turkey 841.8×
- 145NarelaDelhi, India 841.8×
- 145KohimaNagaland, India 841.8×
- 145Changchunlow-cost sensorsJilin, China 841.8×
- 148BawānaDelhi, India 841.8×
- 149BadlapurMaharashtra, India 841.8×
- 150Tepeji del Río de OcampoHidalgo, Mexico 841.8×
- 151LudhianaPunjab, India 831.8×
- 151NandriRajasthan, India 831.8×
- 153SaharsaBihar, India 831.8×
- 153Fort McMurrayAlberta, Canada 831.8×
- 155JodhpurRajasthan, India 831.8×
- 155AhilyanagarMaharashtra, India 831.8×
- 157San Pedro de la PazBiobio, Chile 821.7×
- 158Karachilow-cost sensorsSindh, Pakistan 821.7×
- 158San Salvador TizatlalliMéxico, Mexico 821.7×
- 160ThrissurKerala, India 821.7×
- 160DewasMadhya Pradesh, India 821.7×
- 162NashikMaharashtra, India 821.7×
- 163AjmerRajasthan, India 821.7×
- 164Hyderabadlow-cost sensorsSindh, Pakistan 811.7×
- 164JalgaonMaharashtra, India 811.7×
- 166TlaxcalaTlaxcala, Mexico 811.7×
- 167Dera Colliery TownshipOdisha, India 801.7×
- 168RourkelaOdisha, India 801.6×
- 169NandedMaharashtra, India 801.6×
- 170DurgapurWest Bengal, India 791.6×
- 171Quettalow-cost sensorsBalochistan, Pakistan 791.6×
- 171Tanushimarumachi-toyokiFukuoka, Japan 791.6×
- 173AriyalūrTamil Nadu, India 781.6×
- 173BhiwadiRajasthan, India 781.6×
- 173ByasanagarOdisha, India 781.6×
- 176BilāspurChhattisgarh, India 781.6×
- 177Villa Poeta José Gálvez BarrenecheaLima region, Peru 781.6×
- 178TulancingoHidalgo, Mexico 771.6×
- 179Naucalpan de JuárezMéxico, Mexico 771.5×
- 180UliyazhathuraKerala, India 771.5×
- 181BoisarMaharashtra, India 771.5×
- 182AkolaMaharashtra, India 771.5×
- 182CelayaGuanajuato, Mexico 771.5×
- 184ĀsansolWest Bengal, India 761.5×
- 185PueblaPuebla, Mexico 761.5×
- 185ReginaSaskatchewan, Canada 761.5×
- 187Viña del MarValparaiso, Chile 761.5×
- 188OurenseGalicia, Spain 751.5×
- 188AricaArica y Parinacota Region, Chile 751.5×
- 188SerilingampalleTelangana, India 751.5×
- 188Pimpri-ChinchwadMaharashtra, India 751.5×
- 192Quezon Citylow-cost sensorsNational Capital Region, Philippines 751.5×
- 192TocopillaAntofagasta, Chile 751.5×
- 194SholapurMaharashtra, India 751.5×
- 194BhopalMadhya Pradesh, India 751.5×
- 196VijayapuraKarnataka, India 741.4×
- 196HitaOita, Japan 741.4×
- 196Aya NagarDelhi, India 741.4×
- 199JalandharPunjab, India 741.4×
- 199DurgChhattisgarh, India 741.4×
Top 200 of 2,513 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
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SmogRank, most polluted cities, PM2.5, July 17, 2025, smogrank.com/history/2025-07-17 (accessed 2 Oct 2026).
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