SmogRank / Rankings
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.
- =395SeattleWashington, United States 56
- =395QuébecQuebec, Canada 56
- =395NarashinoChiba, Japan 56
- 404KagoshimaKagoshima, Japan 56
- =405YokosukaKanagawa, Japan 55
- =405IwakuniYamaguchi, Japan 55
- =405NantesPays de la Loire, France 55
- =405TsushimaNagasaki, Japan 55
- =409SendaiKagoshima, Japan 55
- =409OriaBasque Country, Spain 55
- 411StrasbourgGrand Est, France 55
- =412AlbuquerqueNew Mexico, United States 55
- =412Salt Lake CityUtah, United States 55
- 414BurnabyBritish Columbia, Canada 55
- =415SofiaSofia-Capital, Bulgaria 54
- =415Santa MonicaCalifornia, United States 54
- =415Sunland ParkNew Mexico, United States 54
- =418ToyonakaOsaka, Japan 54
- =418KarlsruheBaden-Wurttemberg, Germany 54
- =418EvansvilleIndiana, United States 54
- =421ZürichZurich, Switzerland 54
- =421TatsunoHyōgo, Japan 54
- =423MerateLombardy, Italy 54
- =423BanningCalifornia, United States 54
- =425Kandalast full day 11 OctFukuoka, Japan 53
- =425MarseilleProvence-Alpes-Côte d'Azur, France 53
- =425Spokane ValleyWashington, United States 53
- =428WollongongNew South Wales, Australia 53
- =428JacksonvilleFlorida, United States 53
- =428Des MoinesIowa, United States 53
- =431CampbelltownNew South Wales, Australia 53
- =431GalwayConnacht, Ireland 53
- =431BayonneNew Aquitaine, France 53
- =431New York Citylast full day 11 OctNew York, United States 53
- =431Las VegasNevada, United States 53
- =431VancouverBritish Columbia, Canada 53
- =437CanberraAustralian Capital Territory, Australia 52
- =437Flémalle-HauteWallonia, Belgium 52
- =439StuttgartBaden-Wurttemberg, Germany 52
- =439AmiensHauts-de-France, France 52
- =439PhiladelphiaPennsylvania, United States 52
- =439MoranbahQueensland, Australia 52
- =443AdelaideSouth Australia, Australia 52
- =443MontpellierOccitanie, France 52
- =445ChristchurchCanterbury, New Zealand 52
- =445LiègeWallonia, Belgium 52
- =445RenoNevada, United States 52
- =448BaselBasel-City, Switzerland 52
- =448AustinTexas, United States 52
- =448LangleyBritish Columbia, Canada 52
- =451GabrovoGabrovo, Bulgaria 51
- =451MiyazakiMiyazaki, Japan 51
- =451SaguntoValencia, Spain 51
- =451AshlandKentucky, United States 51
- =451HartfordConnecticut, United States 51
- =456CorkMunster, Ireland 51
- =456Jersey CityNew Jersey, United States 51
- =456MadisonWisconsin, United States 51
- =456AgouraCalifornia, United States 51
- 460La Crescenta-MontroseCalifornia, United States 49
- =461ToulouseOccitanie, France 49
- =461GlendaleArizona, United States 49
- =461DenverColorado, United States 49
- =461North ValleyNew Mexico, United States 49
- 465NonoichiIshikawa, Japan 48
- 466BostonMassachusetts, United States 48
- =467Donostia / San SebastiánBasque Country, Spain 47
- =467RichmondVirginia, United States 47
- =467BendOregon, United States 47
- 470WilmingtonDelaware, United States 47
- 471Chalon-sur-SaôneBourgogne-Franche-Comté, France 45
- 472ZaragozaAragon, Spain 44
- =473SunderlandEngland, United Kingdom 44
- =473EdmontonAlberta, Canada 44
- =475ToursCentre-Val de Loire, France 43
- =475BordeauxNew Aquitaine, France 43
- =475Coos BayOregon, United States 43
- =478Castelló de la PlanaValencia, Spain 42
- =478BergenVestland, Norway 42
- =478Leccolast full day 11 OctLombardy, Italy 42
- =478KitimatBritish Columbia, Canada 42
- =482SouthamptonEngland, United Kingdom 41
- =482Tri-CitiesWashington, United States 41
- 484ArrecifeCanary Islands, Spain 40
- =485LynnMassachusetts, United States 39
- =485MontréalQuebec, Canada 39
- =487Stoke-on-TrentEngland, United Kingdom 39
- =487OviedoAsturias, Spain 39
- =489ManchesterEngland, United Kingdom 38
- =489Fort Leelast full day 11 OctNew Jersey, United States 38
- =489WenatcheeWashington, United States 38
- =492SpokaneWashington, United States 38
- =492OttawaOntario, Canada 38
- 494Fort McMurrayAlberta, Canada 37
- 495BastiaCorsica, France 37
- 496BirminghamEngland, United Kingdom 36
- 497Rivière-des-Prairies–Pointe-aux-TremblesQuebec, Canada 35
- =498EnterpriseNevada, United States 34
- =498FinleyWashington, United States 34
- 500LeixlipLeinster, Ireland 34
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.
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).