SmogRank / History / week of October 16, 2023
Most polluted cities, week of October 16, 2023
1,708 cities ranked by their average PM2.5 over the 7 days; the worst was Lahore, Pakistan, at 97.6 µg/m³. A city needs measurements on 70% of the days to be ranked.
- Czechia and Austria, October 202319 to 20 October 2023, 2 days20 cities45Bohumín
- Japan, October 202319 October 2023, 1 day8 cities35Tsurusaki
Bad-air episodes during week of October 16, 2023. All episodes.
← Lahore 97.6 µg/m³
90 µg/m³0
- 1Lahorelow-cost sensorsPunjab, Pakistan 181
- 2Dhakalow-cost sensorsDhaka Division, Bangladesh 180
- 3N'DjamenaN’Djaména, Chad 174
- 4DelhiDelhi, India 168
- 5KolkataWest Bengal, India 167
- 6HyderabadTelangana, India 159
- 7MumbaiMaharashtra, India 159
- 8DushanbeDushanbe, Tajikistan 151
- 9HanoiHanoi, Vietnam 150
- 10CairoCairo, Egypt 139
- 11Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 138
- 12SalorTashkent Region, Uzbekistan 134
- 13JakartaJakarta, Indonesia 129
- 14ManamaManama, Bahrain 128
- 15Karachilow-cost sensorsSindh, Pakistan 100
- 16SarajevoFederation of B&H, Bosnia and Herzegovina 99
- 16HualpénBiobio, Chile 99
- 18Nong KhaemBangkok, Thailand 98
- 19Tha BoNong Khai, Thailand 96
- 20Samut SakhonSamut Sakhon, Thailand 96
- 21PristinaPristina, Kosovo 93
- 22Islamabadlow-cost sensorsIslamabad, Pakistan 91
- 23GuangzhouGuangdong, China 91
- 24AntananarivoAnalamanga, Madagascar 90
- 25BangkokBangkok, Thailand 89
- 26Puente AltoSantiago Metropolitan, Chile 88
- 27Puerto VarasLos Lagos Region, Chile 87
- 28Phra PradaengSamut Prakan, Thailand 86
- 28SantiagoSantiago Metropolitan, Chile 86
- 30CoyhaiqueAysén, Chile 85
- 31Kathmandulow-cost sensorsBagmati Province, Nepal 85
- 32Mueang NonthaburiNonthaburi, Thailand 84
- 33Banja LukaSrpska, Bosnia and Herzegovina 84
- 34Bang Bo DistrictSamut Prakan, Thailand 82
- 35Khlong LuangPathum Thani, Thailand 82
- 36TetovoTetovo, North Macedonia 81
- 37Samut PrakanSamut Prakan, Thailand 80
- 38NacimientoBiobio, Chile 80
- 39CoronelBiobio, Chile 79
- 40Abujalow-cost sensorsFCT, Nigeria 79
- 41RancaguaO'Higgins Region, Chile 78
- 42QuillotaValparaiso, Chile 78
- 43San CarlosÑuble, Chile 78
- 44ToméBiobio, Chile 78
- 45Nakhon PathomNakhon Pathom, Thailand 77
- 46TalaganteSantiago Metropolitan, Chile 77
- 47Almatylow-cost sensorsAlmaty, Kazakhstan 76
- 48Addis AbabaAddis Ababa, Ethiopia 75
- 48QuinteroValparaiso, Chile 75
- 50Hradec KrálovéHradec Králové Region, Czechia 75
- 50HualquiBiobio, Chile 75
- 50CuranilahueBiobio, Chile 75
- 53OsornoLos Lagos Region, Chile 75
- 53AntofagastaAntofagasta, Chile 75
- 55CuricóMaule Region, Chile 75
- 56ChiguayanteBiobio, Chile 75
- 57CoquimboCoquimbo Region, Chile 74
- 58Ulu BedokSingapore 74
- 59AricaArica y Parinacota Region, Chile 74
- 60TalcahuanoBiobio, Chile 74
- 61Ang Mo Kio New TownSingapore 74
- 61BohumínMoravian-Silesian Region, Czechia 74
- 61Los ÁngelesBiobio, Chile 74
- 61TijuanaBaja California, Mexico 74
- 65DěčínÚstí nad Labem Region, Czechia 73
- 66Kampalalow-cost sensorsCentral Region, Uganda 73
- 66BerounCentral Bohemia, Czechia 73
- 66TemucoAraucania, Chile 73
- 66San Pedro de la PazBiobio, Chile 73
- 70ValdiviaLos Ríos Region, Chile 72
- 70LotaBiobio, Chile 72
- 72OstravaMoravian-Silesian Region, Czechia 72
- 72CopiapóAtacama, Chile 72
- 74ConcepciónBiobio, Chile 72
- 75ChillánÑuble, Chile 71
- 76CauquenesMaule Region, Chile 71
- 77Quezon Citylow-cost sensorsNational Capital Region, Philippines 71
- 78TalcaMaule Region, Chile 71
- 79SalamancaGuanajuato, Mexico 70
- 80AlgiersAlgiers, Algeria 70
- 80Asunciónlow-cost sensorsAsuncion, Paraguay 70
- 82ShenyangLiaoning, China 70
- 82Viña del MarValparaiso, Chile 70
- 84TocopillaAntofagasta, Chile 70
- 84RengoO'Higgins Region, Chile 70
- 86NišCentral Serbia, Serbia 69
- 86SliemaTas-Sliema, Malta 69
- 86La SerenaCoquimbo Region, Chile 69
- 86ConcónValparaiso, Chile 69
- 90ŻabbarĦaż-Żabbar, Malta 69
- 91Alto HospicioTarapacá, Chile 69
- 92QuilpuéValparaiso, Chile 69
- 93OpavaMoravian-Silesian Region, Czechia 68
- 94KazincbarcikaBorsod-Abaúj-Zemplén, Hungary 68
- 94KladnoCentral Bohemia, Czechia 68
- 94La UniónLos Ríos Region, Chile 68
- 97OlomoucOlomouc Region, Czechia 67
- 98Kuala LumpurKuala Lumpur, Malaysia 67
- 99Puerto MonttLos Lagos Region, Chile 66
- 100ColomboWestern Province, Sri Lanka 66
- 100PardubicePardubice Region, Czechia 66
- 100HavířovMoravian-Silesian Region, Czechia 66
- 100HanfordCalifornia, United States 66
- 104BelgradeCentral Serbia, Serbia 66
- 105SkopjeGrad Skopje, North Macedonia 66
- 105CalamaAntofagasta, Chile 66
- 107Queenstown Estatelow-cost sensorsSingapore 66
- 108AnaheimCalifornia, United States 66
- 109AstanaAstana, Kazakhstan 65
- 109KadaňÚstí nad Labem Region, Czechia 65
- 111Cluj-NapocaCluj County, Romania 65
- 111FontanaCalifornia, United States 65
- 113BeijingBeijing, China 65
- 113BakersfieldCalifornia, United States 65
- 115Puerto AysénAysén, Chile 64
- 115FresnoCalifornia, United States 64
- 117Tanushimarumachi-toyokiFukuoka, Japan 64
- 117Mladá BoleslavCentral Bohemia, Czechia 64
- 117NogalesSonora, Mexico 64
- 120AsprópyrgosAttica, Greece 63
- 120CorcoranCalifornia, United States 63
- 122KumamotoKumamoto, Japan 63
- 122MostÚstí nad Labem Region, Czechia 63
- 124České BudějoviceSouth Bohemian Region, Czechia 63
- 124BirminghamAlabama, United States 63
- 126BakuBaki, Azerbaijan 63
- 126BizenOkayama, Japan 63
- 128TsurusakiOita, Japan 62
- 128PraguePrague, Czechia 62
- 130BucharestBucharest, Romania 62
- 130KasaokaOkayama, Japan 62
- 130Ústí nad LabemÚstí nad Labem Region, Czechia 62
- 130Český TěšínMoravian-Silesian Region, Czechia 62
- 134TraunUpper Austria, Austria 62
- 135CelayaGuanajuato, Mexico 62
- 135Los AngelesCalifornia, United States 62
- 135TurlockCalifornia, United States 62
- 135VisaliaCalifornia, United States 62
- 139TepliceÚstí nad Labem Region, Czechia 61
- 139Novi SadVojvodina, Serbia 61
- 139KōkaShiga, Japan 61
- 142HumennéPrešov Region, Slovakia 61
- 142BitolaBitola, North Macedonia 61
- 142AnsfeldenUpper Austria, Austria 61
- 142LiberecLiberec Region, Czechia 61
- 142GlendaleArizona, United States 61
- 147Uekimachi-mōnoKumamoto, Japan 61
- 147MiyakonojōMiyazaki, Japan 61
- 147IyoEhime, Japan 61
- 147ComptonCalifornia, United States 61
- 147RiversideCalifornia, United States 61
- 152La Línea de la ConcepciónAndalusia, Spain 61
- 152Frýdek-MístekMoravian-Silesian Region, Czechia 61
- 154MaderaCalifornia, United States 61
- 155TamanaKumamoto, Japan 61
- 155KurashikiOkayama, Japan 61
- 155HitaOita, Japan 61
- 155GrazStyria, Austria 61
- 155Ciudad JuárezChihuahua, Mexico 61
- 155Carsonlow-cost sensorsCalifornia, United States 61
- 155Hawthornelow-cost sensorsCalifornia, United States 61
- 162San RoqueAndalusia, Spain 60
- 162MostaIl-Mosta, Malta 60
- 162Valašské MeziříčíZlín, Czechia 60
- 165ŌitaOita, Japan 60
- 165LinzUpper Austria, Austria 60
- 165HernandoMississippi, United States 60
- 168AthensAttica, Greece 60
- 168UtoKumamoto, Japan 60
- 168ZnojmoSouth Moravian, Czechia 60
- 168AlessandriaPiedmont, Italy 60
- 172RuseRuse, Bulgaria 60
- 172PřerovOlomouc Region, Czechia 60
- 172PortervilleCalifornia, United States 60
- 175NakatsuOita, Japan 59
- 175MartinŽilina Region, Slovakia 59
- 177NairobiNairobi County, Kenya 59
- 178SōjaOkayama, Japan 59
- 178Torrancelow-cost sensorsCalifornia, United States 59
- 180IaşiIași County, Romania 59
- 180KošiceKošice Region, Slovakia 59
- 180KurumeFukuoka, Japan 59
- 180Kan’onjichōKagawa, Japan 59
- 180JacksonMississippi, United States 59
- 180Chula VistaCalifornia, United States 59
- 186ŌzuKumamoto, Japan 59
- 186NagaiYamagata, Japan 59
- 186WelsUpper Austria, Austria 59
- 186PassauBavaria, Germany 59
- 186BartlettTennessee, United States 59
- 191Spišská Nová VesKošice Region, Slovakia 58
- 191YanaiYamaguchi, Japan 58
- 191TsuyamaOkayama, Japan 58
- 191SaikiOita, Japan 58
- 191GyálPest County, Hungary 58
- 196HonmachiKumamoto, Japan 58
- 196FukuyamaHiroshima, Japan 58
- 196LitvínovÚstí nad Labem Region, Czechia 58
- 196Inglewoodlow-cost sensorsCalifornia, United States 58
- 200KavadarciKavadarci, North Macedonia 58
Top 200 of 1,708 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, week of October 16, 2023, smogrank.com/history/2023-W42 (accessed 2 Oct 2026).
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