516 cities by checked peak, last 7 days

Every city with enough measurements in this window, worst first.

CPCB in India: no readings since 12 Oct (488 monitors). EEA in Spain: no readings since 13 Oct (310 monitors). Their cities show older figures or are missing from this board, not clean.

Ranked by checked peak: each city's worst 6 hours in a row, read by at least 2 monitoring places 3 km or more apart (the second-highest place's average over those hours), so one faulty monitor or smoke over one corner of a city can't set it. 516 of these 2,895 cities are ranked: those measured at 2 or more such places on enough of the days.

=301GijangBusan, South Korea 62
=301GaigeturiJeju-do, South Korea 62
=301ShizuokaShizuoka, Japan 62
=301SabaeFukui, Japan 62
=301KasukabeSaitama, Japan 62
306KurihamaKanagawa, Japan 61
=307SheffieldEngland, United Kingdom 61
=307JōyōKyoto, Japan 61
=309MinatoWakayama, Japan 61
=309HimejiHyōgo, Japan 61
=309ToppenishWashington, United States 61
=312TakamatsuKagawa, Japan 61
=312SandachōHyōgo, Japan 61
=312HigashinozoeHyōgo, Japan 61
=312MiyakonojōMiyazaki, Japan 61
=312FujiedaShizuoka, Japan 61
=312SalzburgSalzburg, Austria 61
=312ParisÎle-de-France, France 61
=319UbeYamaguchi, Japan 61
=319KobeHyōgo, Japan 61
=319KawagoeSaitama, Japan 61
=319KanbaraShizuoka, Japan 61
=319YakimaWashington, United States 61
=324Kitakyushulast full day 11 OctFukuoka, Japan 61
=324HirakataOsaka, Japan 61
=324TorontoOntario, Canada 61
=327Chiang MaiChiang Mai, Thailand 60
=327EvanstonIllinois, United States 60
=329SapporoHokkaido, Japan 60
=329MelbourneVictoria, Australia 60
=329TimaruCanterbury, New Zealand 60
=329AzaminoKanagawa, Japan 60
=333SinhyeonGyeongsangnam-do, South Korea 60
=333YamagataYamagata, Japan 60
=335SakaiOsaka, Japan 60
=335KashiwaChiba, Japan 60
=335MatsuyamaEhime, Japan 60
=335NiceProvence-Alpes-Côte d'Azur, France 60
=335NoboritoKanagawa, Japan 60
340BrusselsBrussels Capital, Belgium 59
=341HadanoKanagawa, Japan 59
=341MagnaUtah, United States 59
=341YamatoKanagawa, Japan 59
=344PortlandOregon, United States 59
=344BothellWashington, United States 59
=346GyeongjuGyeongsangbuk-do, South Korea 59
=346SodegauraChiba, Japan 59
=348AkashiHyōgo, Japan 59
=348OgawamachiSaitama, Japan 59
=348MachidaTokyo, Japan 59
=348FujisawaKanagawa, Japan 59
=348KōriyamaFukushima, Japan 59
=348RouenNormandy, France 59
=348WashingtonDistrict of Columbia, United States 59
=348ShūnanYamaguchi, Japan 59
356Celayalast full day 11 OctGuanajuato, Mexico 58
357Palo AltoCalifornia, United States 58
=358OlpeNorth Rhine-Westphalia, Germany 58
=358BilbaoBasque Country, Spain 58
=358CincinnatiOhio, United States 58
=361KyotoKyoto, Japan 58
=361IchiharaChiba, Japan 58
=361HakodateHokkaido, Japan 58
=361DunedinOtago, New Zealand 58
=365UrayasuChiba, Japan 58
=365Tagajō-shiMiyagi, Japan 58
=365SendaiMiyagi, Japan 58
=368NewcastleNew South Wales, Australia 58
=368ColumbusOhio, United States 58
=370KainanWakayama, Japan 57
=370SakuraChiba, Japan 57
=370NottinghamEngland, United Kingdom 57
=370MorrisvilleNorth Carolina, United States 57
=370SennanOsaka, Japan 57
=375ChibaChiba, Japan 57
=375GladstoneQueensland, Australia 57
=375KnoxvilleTennessee, United States 57
=375PhoenixArizona, United States 57
=379TondabayashichōOsaka, Japan 57
=379NiigataNiigata, Japan 57
=379NagasakiNagasaki, Japan 57
=379TomakomaiHokkaido, Japan 57
=379NewarkDelaware, United States 57
=379San JoseCalifornia, United States 57
=379CalgaryAlberta, Canada 57
=386TakarazukaHyōgo, Japan 57
=386ValenciaValencia, Spain 57
=386LyonAuvergne-Rhône-Alpes, France 57
=386Mango HillQueensland, Australia 57
=390TokushimaTokushima, Japan 56
=390KanazawaIshikawa, Japan 56
=390IwakiFukushima, Japan 56
=390MiddlesbroughEngland, United Kingdom 56
394Frankfurt am MainHesse, Germany 56
=395OyamaTochigi, Japan 56
=395MatsudoChiba, Japan 56
=395TorideIbaraki, Japan 56
=395CharlotteNorth Carolina, United States 56
=395AbingtonPennsylvania, United States 56
=395EugeneOregon, United States 56

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors About these marks

Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.

Good0–50

Moderate51–100

Unhealthy for 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, Turkey and Iran, which publish only on their own websites. We are building the reader for China's network. The networks of Turkey and Iran don't answer requests from outside their countries, so we can't read them. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, all cities ranked by checked peak PM2.5 (µg/m³), last 7 days to 14 Oct 2026, 07:00 UTC: each city's worst 6 hours in a row, read by 2 or more monitoring places 3 km or more apart, cities with a checked peak on 5 or more of the 7 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=7d&by=peak. Ranked on low-cost sensors, with no reference monitor in the city: #1 Burunday, #2 Faisalabad, #3 Otegen Batyra, #4 Multan, #6 Peshawar, #7 Lahore, #8 Gujranwala, #9 Dhaka and #10 Kinshasa. Some readings from Aurassure; Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published.

Download top 10 by average (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Updated 2026-10-14 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Aurassure; Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).