SmogRank / History / July 20, 2024
Most polluted cities on July 20, 2024
2,218 cities ranked by their average PM2.5 over the day; the worst was Edmonton, Canada, at 170.0 µg/m³. Each city's own local calendar day.
- North-western United States and Canada, July 202420 to 24 July 2024, 5 days31 cities203Prince Albert
- Biobio, Chile, July 202420 to 23 July 2024, 4 days15 cities179Temuco
Bad-air episodes during July 20, 2024. All episodes.
← Edmonton 170.0 µg/m³
150 µg/m³15 WHO 24-hour guideline
- 1EdmontonAlberta, Canada 24511.3×
- 2Fort McMurrayAlberta, Canada 22710.1×
- 3Fort St. JohnBritish Columbia, Canada 2219.7×
- 4St. AlbertAlberta, Canada 1968.0×
- 5Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo 1947.8×
- 6Puerto AysénAysén, Chile 1867.0×
- 7HualquiBiobio, Chile 1756.0×
- 8ChillánÑuble, Chile 1745.9×
- 9RancaguaO'Higgins Region, Chile 1735.7×
- 10CoronelBiobio, Chile 1705.5×
- 11Lahorelow-cost sensorsPunjab, Pakistan 1685.4×
- 12NacimientoBiobio, Chile 1685.3×
- 13CuricóMaule Region, Chile 1675.2×
- 14SantiagoSantiago Metropolitan, Chile 1645.0×
- 15TalcaMaule Region, Chile 1644.9×
- 16Prince AlbertSaskatchewan, Canada 1614.7×
- 17Puerto VarasLos Lagos Region, Chile 1594.4×
- 18HualpénBiobio, Chile 1584.4×
- 19ChiguayanteBiobio, Chile 1574.2×
- 20RengoO'Higgins Region, Chile 1574.2×
- 21ToméBiobio, Chile 1564.2×
- 22JakartaJakarta, Indonesia 1564.2×
- 23TemucoAraucania, Chile 1554.1×
- 24Puente AltoSantiago Metropolitan, Chile 1544.0×
- 25LotaBiobio, Chile 1513.7×
- 26ConcepciónBiobio, Chile 1453.6×
- 27CairoCairo, Egypt 1433.5×
- 28CoyhaiqueAysén, Chile 1423.5×
- 29TalcahuanoBiobio, Chile 1413.5×
- 30TalaganteSantiago Metropolitan, Chile 1413.4×
- 31QuilpuéValparaiso, Chile 1393.4×
- 32QuillotaValparaiso, Chile 1373.3×
- 33DelhiDelhi, India 1303.1×
- 34CuranilahueBiobio, Chile 1293.1×
- 35Kampalalow-cost sensorsCentral Region, Uganda 1293.1×
- 36Sherwood ParkAlberta, Canada 1222.9×
- 37Puerto MonttLos Lagos Region, Chile 1222.9×
- 38CauquenesMaule Region, Chile 1182.8×
- 39La UniónLos Ríos Region, Chile 1152.8×
- 40LimaLima Province, Peru 1152.7×
- 41AltamontOregon, United States 1132.7×
- 42OsornoLos Lagos Region, Chile 1062.5×
- 43Viña del MarValparaiso, Chile 1052.5×
- 44San Pedro de la PazBiobio, Chile 1032.4×
- 45Islamabadlow-cost sensorsIslamabad, Pakistan 1022.4×
- 46Addis AbabaAddis Ababa, Ethiopia 1012.4×
- 47MedfordOregon, United States 972.3×
- 48AntananarivoAnalamanga, Madagascar 972.2×
- 49São PauloSão Paulo, Brazil 942.1×
- 49Santa Anita - Los FicusLima region, Peru 942.1×
- 51HanoiHanoi, Vietnam 932.1×
- 51VillarricaAraucania, Chile 932.1×
- 53SarajevoFederation of B&H, Bosnia and Herzegovina 922.1×
- 53QuinteroValparaiso, Chile 922.1×
- 55Asunciónlow-cost sensorsAsuncion, Paraguay 922.1×
- 56ConcónValparaiso, Chile 912.0×
- 57SaskatoonSaskatchewan, Canada 892.0×
- 58ValdiviaLos Ríos Region, Chile 881.9×
- 59AntofagastaAntofagasta, Chile 871.9×
- 59Red DeerAlberta, Canada 871.9×
- 61DushanbeDushanbe, Tajikistan 861.9×
- 62VelesVeles, North Macedonia 851.8×
- 63Şabāḩ as SālimMubārak al Kabīr, Kuwait 831.8×
- 63Grants PassOregon, United States 831.8×
- 65ChikuseiIbaraki, Japan 831.8×
- 66AstanaAstana, Kazakhstan 831.7×
- 66San Francisco De BorjaLima region, Peru 831.7×
- 68BeijingBeijing, China 831.7×
- 68Jacobo HunterArequipa, Peru 831.7×
- 70Karachilow-cost sensorsSindh, Pakistan 821.7×
- 71AshlandOregon, United States 821.7×
- 72MitoIbaraki, Japan 821.7×
- 72TimaruCanterbury, New Zealand 821.7×
- 74KavadarciKavadarci, North Macedonia 811.7×
- 75CatañoCataño, Puerto Rico 811.7×
- 76CopiapóAtacama, Chile 811.7×
- 76Medicine HatAlberta, Canada 811.7×
- 78Le LamentinMartinique, Martinique 801.7×
- 79BendOregon, United States 801.6×
- 80OyamaTochigi, Japan 791.6×
- 80Fort-de-FranceMartinique, Martinique 791.6×
- 82Les AbymesGuadeloupe, Guadeloupe 781.6×
- 82Los ÁngelesBiobio, Chile 781.6×
- 82CallaoCallao, Peru 781.6×
- 85SanoTochigi, Japan 771.6×
- 86TatebayashiGunma, Japan 771.5×
- 87MaputoMaputo City, Mozambique 771.5×
- 88NasukarasuyamaTochigi, Japan 761.5×
- 89CalgaryAlberta, Canada 761.5×
- 90GyōdaSaitama, Japan 761.5×
- 90ReginaSaskatchewan, Canada 761.5×
- 92BoiseIdaho, United States 761.5×
- 93Bang NaBangkok, Thailand 751.5×
- 93MeridianIdaho, United States 751.5×
- 95TakasakiGunma, Japan 741.4×
- 95AricaArica y Parinacota Region, Chile 741.4×
- 97MookaTochigi, Japan 741.4×
- 97AlgiersAlgiers, Algeria 741.4×
- 99BitolaBitola, North Macedonia 741.4×
- 100Villa Poeta José Gálvez BarrenecheaLima region, Peru 741.4×
- 100CranbrookBritish Columbia, Canada 741.4×
- 102MarigotSaint Martin 741.4×
- 103ŌtsukiYamanashi, Japan 741.4×
- 103AirdrieAlberta, Canada 741.4×
- 105Le RobertMartinique, Martinique 731.4×
- 106ShanghaiShanghai, China 731.4×
- 106ChimboteAncash, Peru 731.4×
- 108YauriCuzco Department, Peru 731.4×
- 108Fort LauderdaleFlorida, United States 731.4×
- 110ChocopeLa Libertad, Peru 731.4×
- 110RedmondOregon, United States 731.4×
- 112AshikagaTochigi, Japan 721.4×
- 112SpeyerRheinland-Pfalz, Germany 721.4×
- 112Great FallsMontana, United States 721.4×
- 112YamanashiYamanashi, Japan 721.4×
- 112AyaseKanagawa, Japan 721.4×
- 117TochigiTochigi, Japan 721.4×
- 118Debrecenlow-cost sensorsHajdú-Bihar, Hungary 721.4×
- 119CoquimboCoquimbo Region, Chile 721.3×
- 120IwakiFukushima, Japan 711.3×
- 120UžiceCentral Serbia, Serbia 711.3×
- 122GostivarGostivar, North Macedonia 711.3×
- 123MenumaSaitama, Japan 711.3×
- 123IgusaSaitama, Japan 711.3×
- 125NampaIdaho, United States 711.3×
- 126KōnosuSaitama, Japan 711.3×
- 126KanumaTochigi, Japan 711.3×
- 126KaminokawaTochigi, Japan 711.3×
- 126KodairaTokyo, Japan 711.3×
- 130TsuchiuraIbaraki, Japan 701.3×
- 130HigashikurumeTokyo, Japan 701.3×
- 132HitachiIbaraki, Japan 701.3×
- 133KraljevoCentral Serbia, Serbia 701.3×
- 133GroßostheimBavaria, Germany 701.3×
- 135WillebroekFlanders, Belgium 701.3×
- 135Hitachi-NakaIbaraki, Japan 701.3×
- 137KasamaIbaraki, Japan 701.3×
- 137Prince GeorgeBritish Columbia, Canada 701.3×
- 139Twin FallsIdaho, United States 691.3×
- 140AshgabatAshgabat, Turkmenistan 691.3×
- 140TetovoTetovo, North Macedonia 691.3×
- 140KazoSaitama, Japan 691.3×
- 140ConroeTexas, United States 691.3×
- 144LazarevacCentral Serbia, Serbia 691.3×
- 144NurembergBavaria, Germany 691.3×
- 144Falconara MarittimaThe Marches, Italy 691.3×
- 144Higashi-MatsuyamaSaitama, Japan 691.3×
- 148UtsunomiyaTochigi, Japan 691.2×
- 148ŌmeTokyo, Japan 691.2×
- 148KitaibarakiIbaraki, Japan 691.2×
- 148HitachiomiyaIbaraki, Japan 691.2×
- 152KadaňÚstí nad Labem Region, Czechia 691.2×
- 153Alto HospicioTarapacá, Chile 691.2×
- 154ImaichiTochigi, Japan 681.2×
- 154CoburgBavaria, Germany 681.2×
- 154HigashimurayamaTokyo, Japan 681.2×
- 157TokorozawaSaitama, Japan 681.2×
- 157Kodamachō-kodamaminamiSaitama, Japan 681.2×
- 157AgeoSaitama, Japan 681.2×
- 160Novi PazarCentral Serbia, Serbia 671.2×
- 160CalamaAntofagasta, Chile 671.2×
- 162Shimo-tsumaIbaraki, Japan 671.2×
- 162KawagoeSaitama, Japan 671.2×
- 162TocopillaAntofagasta, Chile 671.2×
- 162RangioraCanterbury, New Zealand 671.2×
- 162BandōIbaraki, Japan 671.2×
- 167KiryūGunma, Japan 671.2×
- 168IwataShizuoka, Japan 671.2×
- 168IrumaSaitama, Japan 671.2×
- 170KumagayaSaitama, Japan 671.2×
- 170MissoulaMontana, United States 671.2×
- 172MorohongōSaitama, Japan 661.2×
- 172RadomskoŁódź Voivodeship, Poland 661.2×
- 174Ciudad General EscobedoNuevo León, Mexico 661.2×
- 175YoriiSaitama, Japan 661.1×
- 175Sakai-nakajimaGunma, Japan 661.1×
- 175AsakaSaitama, Japan 661.1×
- 175KaiserslauternRheinland-Pfalz, Germany 661.1×
- 179TrebišovKošice Region, Slovakia 661.1×
- 179HonjōSaitama, Japan 661.1×
- 179Ludwigshafen am RheinRheinland-Pfalz, Germany 661.1×
- 179Minami-SōmaFukushima, Japan 661.1×
- 183SkopjeGrad Skopje, North Macedonia 661.1×
- 183KanchanaburiKanchanaburi, Thailand 661.1×
- 183ObamaFukui, Japan 661.1×
- 183KamisuIbaraki, Japan 661.1×
- 183MimaTokushima, Japan 661.1×
- 188EisenGyeongsangbuk-do, South Korea 661.1×
- 188SayamaSaitama, Japan 661.1×
- 188IshiokaIbaraki, Japan 661.1×
- 191BakuBaki, Azerbaijan 651.1×
- 191HokotaIbaraki, Japan 651.1×
- 193TomiokaGunma, Japan 651.1×
- 193WeidenBavaria, Germany 651.1×
- 193BambergBavaria, Germany 651.1×
- 193ValjevoCentral Serbia, Serbia 651.1×
- 193AkishimaTokyo, Japan 651.1×
- 198Kathmandulow-cost sensorsBagmati Province, Nepal 651.1×
- 198HanyūSaitama, Japan 651.1×
- 198IwanumaMiyagi, Japan 651.1×
Top 200 of 2,218 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 20, 2024, smogrank.com/history/2024-07-20 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.