SmogRank / History / August 24, 2025
Most polluted cities on August 24, 2025
2,504 cities ranked by their average PM2.5 over the day; the worst was Saltillo, Mexico, at 366.0 µg/m³. Each city's own local calendar day.
← Saltillo 366.0
WHO 24-hour guideline
- 1SaltilloCoahuila, Mexico 366.024.4×
- 2DhaulpurRajasthan, India 192.012.8×
- 3SuratGujarat, India 136.09.1×
- 4AurangābādBihar, India 80.05.3×
- 5HualpénBiobio, Chile 71.74.8×
- 6DushanbeDushanbe, Tajikistan 71.34.8×
- 7Beitbridgelow-cost sensorsMatabeleland South Province, Zimbabwe 66.74.4×
- 8TalcahuanoBiobio, Chile 61.04.1×
- 9KigaliKigali, Rwanda 58.83.9×
- 10PatancheruTelangana, India 53.23.5×
- 11CuddaloreTamil Nadu, India 51.93.5×
- 12Dubailow-cost sensorsDubai, United Arab Emirates 51.63.4×
- 13Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo 51.53.4×
- 14VirārMaharashtra, India 51.43.4×
- 15TalcaMaule Region, Chile 50.53.4×
- 16NacimientoBiobio, Chile 49.53.3×
- 16LewistonIdaho, United States 49.53.3×
- 18PonferradaCastille and León, Spain 48.03.2×
- 19ChillánÑuble, Chile 46.23.1×
- 20San CarlosÑuble, Chile 45.33.0×
- 21Faisalabadlow-cost sensorsPunjab, Pakistan 45.03.0×
- 22TalaganteSantiago Metropolitan, Chile 44.53.0×
- 23Iloilolow-cost sensorsWestern Visayas, Philippines 43.82.9×
- 24GummidipundiTamil Nadu, India 43.72.9×
- 25BendOregon, United States 42.52.8×
- 26JakartaJakarta, Indonesia 42.42.8×
- 27Istanbullow-cost sensorsIstanbul, Turkey 42.22.8×
- 28VijayawadaAndhra Pradesh, India 41.82.8×
- 29ChittoorAndhra Pradesh, India 41.22.7×
- 30RengoO'Higgins Region, Chile 40.22.7×
- 31TirupatiAndhra Pradesh, India 40.12.7×
- 31SamāstipurBihar, India 40.12.7×
- 33GobindgarhPunjab, India 39.72.6×
- 34TocopillaAntofagasta, Chile 38.22.5×
- 35MoscowIdaho, United States 37.72.5×
- 36RourkelaOdisha, India 37.62.5×
- 37AlangadKerala, India 37.32.5×
- 38LimaLima Province, Peru 36.72.4×
- 39RasapūdipalemAndhra Pradesh, India 36.62.4×
- 40KadapaAndhra Pradesh, India 36.32.4×
- 41NalbāriAssam, India 35.92.4×
- 42QuillotaValparaiso, Chile 35.82.4×
- 43ToméBiobio, Chile 35.22.3×
- 44SantiagoSantiago Metropolitan, Chile 35.02.3×
- 45KishanganjBihar, India 34.92.3×
- 46PullmanWashington, United States 33.92.3×
- 47Quezon Citylow-cost sensorsNational Capital Region, Philippines 33.72.2×
- 48Hararelow-cost sensorsHarare, Zimbabwe 33.32.2×
- 49NagaonAssam, India 33.22.2×
- 49CoronelBiobio, Chile 33.22.2×
- 51SangāreddiTelangana, India 33.12.2×
- 52San Francisco De BorjaLima region, Peru 32.72.2×
- 53LinaresMaule Region, Chile 32.62.2×
- 54ChennaiTamil Nadu, India 32.32.2×
- 54Los ÁngelesBiobio, Chile 32.32.2×
- 56KalaburagiKarnataka, India 32.22.1×
- 57Ashaimanlow-cost sensorsGreater Accra, Ghana 32.12.1×
- 58MangaluruKarnataka, India 31.62.1×
- 59SaharsaBihar, India 31.52.1×
- 59AmritsarPunjab, India 31.52.1×
- 61SerilingampalleTelangana, India 31.32.1×
- 62RānipetTamil Nadu, India 31.22.1×
- 62San Pedro de la PazBiobio, Chile 31.22.1×
- 64ConcepciónBiobio, Chile 31.12.1×
- 64RedmondOregon, United States 31.12.1×
- 66QuilpuéValparaiso, Chile 31.02.1×
- 66QuthbullapurTelangana, India 31.02.1×
- 68HualquiBiobio, Chile 30.82.1×
- 69Multanlow-cost sensorsPunjab, Pakistan 30.72.0×
- 70AnantapurAndhra Pradesh, India 30.42.0×
- 70CuricóMaule Region, Chile 30.42.0×
- 72KannurKerala, India 30.22.0×
- 73RamanathapuramTamil Nadu, India 30.02.0×
- 73CopiapóAtacama, Chile 30.02.0×
- 75AjmerRajasthan, India 29.32.0×
- 76Puerto AysénAysén, Chile 28.91.9×
- 77Gujranwalalow-cost sensorsPunjab, Pakistan 28.31.9×
- 77ThrissurKerala, India 28.31.9×
- 79OsornoLos Lagos Region, Chile 28.21.9×
- 79VapiGujarat, India 28.21.9×
- 81Quettalow-cost sensorsBalochistan, Pakistan 28.01.9×
- 82SatnaMadhya Pradesh, India 27.91.9×
- 83CoyhaiqueAysén, Chile 27.71.8×
- 84ThiruvananthapuramKerala, India 27.31.8×
- 84CuranilahueBiobio, Chile 27.31.8×
- 86LoniUttar Pradesh, India 27.11.8×
- 87HyderabadTelangana, India 26.81.8×
- 88BawānaDelhi, India 26.71.8×
- 89KamisuIbaraki, Japan 26.41.8×
- 89KhargharMaharashtra, India 26.41.8×
- 91UliyazhathuraKerala, India 26.31.8×
- 92BhiwadiRajasthan, India 26.21.7×
- 93BegusaraiBihar, India 26.11.7×
- 94ChāpraBihar, India 25.91.7×
- 95TiruchirappalliTamil Nadu, India 25.81.7×
- 95NeelankaraiTamil Nadu, India 25.81.7×
- 97Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 25.61.7×
- 97AricaArica y Parinacota Region, Chile 25.61.7×
- 99KuwanaMie, Japan 25.41.7×
- 100BhāgalpurBihar, India 25.31.7×
- 100YokkaichiMie, Japan 25.31.7×
- 100Puerto MonttLos Lagos Region, Chile 25.31.7×
- 103VillarricaAraucania, Chile 25.01.7×
- 103Puerto VarasLos Lagos Region, Chile 25.01.7×
- 105AmaAichi, Japan 24.91.7×
- 106MatsusakaMie, Japan 24.61.6×
- 107QuinteroValparaiso, Chile 24.51.6×
- 107InabeMie, Japan 24.51.6×
- 109KariyaAichi, Japan 24.21.6×
- 109OurenseGalicia, Spain 24.21.6×
- 111Hyderabadlow-cost sensorsSindh, Pakistan 24.01.6×
- 111Dera Colliery TownshipOdisha, India 24.01.6×
- 113PocatelloIdaho, United States 23.91.6×
- 114VelloreTamil Nadu, India 23.81.6×
- 114UlsanUlsan, South Korea 23.81.6×
- 114ŌtsukiYamanashi, Japan 23.81.6×
- 114FukuroiShizuoka, Japan 23.81.6×
- 118ConcónValparaiso, Chile 23.71.6×
- 119NandedMaharashtra, India 23.61.6×
- 120CallaoCallao, Peru 23.41.6×
- 121Karachilow-cost sensorsSindh, Pakistan 23.21.5×
- 121CholulaPuebla, Mexico 23.21.5×
- 123BhiwandiMaharashtra, India 23.11.5×
- 123ShimodaShizuoka, Japan 23.11.5×
- 125TaharaAichi, Japan 23.01.5×
- 125SawaraChiba, Japan 23.01.5×
- 127Lahorelow-cost sensorsPunjab, Pakistan 22.91.5×
- 127SaikūMie, Japan 22.91.5×
- 127ChilliwackBritish Columbia, Canada 22.91.5×
- 130KakegawaShizuoka, Japan 22.81.5×
- 130KaizuGifu, Japan 22.81.5×
- 130AyaseKanagawa, Japan 22.81.5×
- 133RancaguaO'Higgins Region, Chile 22.71.5×
- 134IseMie, Japan 22.61.5×
- 134IchinomiyaAichi, Japan 22.61.5×
- 134GamagōriAichi, Japan 22.61.5×
- 134KosaiShizuoka, Japan 22.61.5×
- 138OnoHyōgo, Japan 22.51.5×
- 138OkazakiAichi, Japan 22.51.5×
- 138HamakitaShizuoka, Japan 22.51.5×
- 138ChibaChiba, Japan 22.51.5×
- 138AntofagastaAntofagasta, Chile 22.51.5×
- 138TōkaiAichi, Japan 22.51.5×
- 144PāliRajasthan, India 22.41.5×
- 144GotembaShizuoka, Japan 22.41.5×
- 144TsuchiuraIbaraki, Japan 22.41.5×
- 147DelhiDelhi, India 22.31.5×
- 147EisenGyeongsangbuk-do, South Korea 22.31.5×
- 147TobaMie, Japan 22.31.5×
- 147ShimaMie, Japan 22.31.5×
- 147ValdiviaLos Ríos Region, Chile 22.31.5×
- 152VijayapuraKarnataka, India 22.21.5×
- 153CoquimboCoquimbo Region, Chile 22.11.5×
- 154TateyamaChiba, Japan 22.01.5×
- 154KurihamaKanagawa, Japan 22.01.5×
- 154Temalow-cost sensorsGreater Accra, Ghana 22.01.5×
- 157ToyohashiAichi, Japan 21.91.5×
- 157La UniónLos Ríos Region, Chile 21.91.5×
- 157La SerenaCoquimbo Region, Chile 21.91.5×
- 160GorakhpurUttar Pradesh, India 21.81.5×
- 160NagoyaAichi, Japan 21.81.5×
- 160Accralow-cost sensorsGreater Accra, Ghana 21.81.5×
- 163KakamigaharaGifu, Japan 21.71.4×
- 163AtamiShizuoka, Japan 21.71.4×
- 163AridaWakayama, Japan 21.71.4×
- 166TokiGifu, Japan 21.61.4×
- 166SuzukaMie, Japan 21.61.4×
- 166ChiguayanteBiobio, Chile 21.61.4×
- 169PohangGyeongsangbuk-do, South Korea 21.51.4×
- 169ToyotaAichi, Japan 21.51.4×
- 169NagahamaShiga, Japan 21.51.4×
- 169KamakuraKanagawa, Japan 21.51.4×
- 169IwataShizuoka, Japan 21.51.4×
- 169KasamaIbaraki, Japan 21.51.4×
- 169BakersfieldCalifornia, United States 21.51.4×
- 176SilcharAssam, India 21.41.4×
- 176NishioAichi, Japan 21.41.4×
- 176ChiryūAichi, Japan 21.41.4×
- 176ChigasakiKanagawa, Japan 21.41.4×
- 176TuxtlaChiapas, Mexico 21.41.4×
- 181FujiedaShizuoka, Japan 21.31.4×
- 181MobaraChiba, Japan 21.31.4×
- 181Medina del CampoCastille and León, Spain 21.31.4×
- 181FuenlabradaMadrid, Spain 21.31.4×
- 185TsuMie, Japan 21.21.4×
- 185AnanTokushima, Japan 21.21.4×
- 185OmigawaChiba, Japan 21.21.4×
- 188MorādābādUttar Pradesh, India 21.11.4×
- 188HigashinozoeHyōgo, Japan 21.11.4×
- 188Kakogawachō-honmachiHyōgo, Japan 21.11.4×
- 188KainanWakayama, Japan 21.11.4×
- 188MóstolesMadrid, Spain 21.11.4×
- 193SandachōHyōgo, Japan 21.01.4×
- 193IwadeWakayama, Japan 21.01.4×
- 193HokotaIbaraki, Japan 21.01.4×
- 193MinamibōsōChiba, Japan 21.01.4×
- 197VrindāvanUttar Pradesh, India 20.91.4×
- 197Icheon-siGyeonggi-do, South Korea 20.91.4×
- 197TokonameAichi, Japan 20.91.4×
- 197HashimaGifu, Japan 20.91.4×
Top 200 of 2,504 shown.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. 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, August 24, 2025, smogrank.com/history/2025-08-24 (accessed 2 Oct 2026).
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