All 2,894 cities by PM2.5, last 7 days

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

CPCB in India: no readings since 12 Oct (488 monitors). EEA and Catalonia Medi Ambient I Sostenibilitat in Spain: no readings since 13 Oct (336 monitors). Their cities show older figures or are missing from this board, not clean.

Hide the 297 cities with only 1–2 sensors

These cities have only one or two low-cost sensors, and one cheap unit can read well off, so they take no rank. They sit at their place by value, marked –, and every ranked city keeps its number.

=2328LamarColorado, United States 24 US AQI▲49
=2328OremUtah, United States 24 US AQI▼130
=2328AllistonOntario, Canada 24 US AQI▲398
=2328ShawiniganQuebec, Canada 24 US AQI▲147
=2352SakaiminatoTottori, Japan 24 US AQI▲200
=2352MelbourneVictoria, Australia 24 US AQI▲98
=2352UtielValencia, Spain 24 US AQI
=2352TorreviejaValencia, Spain 24 US AQI
=2352ArrecifeCanary Islands, Spain 24 US AQI
=2352WiganEngland, United Kingdom 24 US AQI▲125
=2352SheffieldEngland, United Kingdom 24 US AQI▲2
=2352DoncasterEngland, United Kingdom 24 US AQI▲37
=2352BrightlingseaEngland, United Kingdom 24 US AQI▲101
=2352Rüsselsheim am MainHesse, Germany 24 US AQI▲102
=2352PortlaoiseLeinster, Ireland 24 US AQI▲134
=2352NavanLeinster, Ireland 24 US AQI▲172
=2352MallowMunster, Ireland 24 US AQI▲173
=2352VerdunGrand Est, France 24 US AQI▲76
=2352Romans-sur-IsèreAuvergne-Rhône-Alpes, France 24 US AQI▼363
=2352MarseilleProvence-Alpes-Côte d'Azur, France 24 US AQI▼27
=2352HarfleurNormandy, France 24 US AQI▼248
=2352ÉvreuxNormandy, France 24 US AQI▼178
=2352CannesProvence-Alpes-Côte d'Azur, France 24 US AQI▼20
=2352Baume-les-DamesBourgogne-Franche-Comté, France 24 US AQI▲110
=2352AvellinoCampania, Italy 24 US AQI▼560
=2352Kennett SquarePennsylvania, United States 24 US AQI▲268
=2352HartfordConnecticut, United States 24 US AQI▲292
=2352BethlehemPennsylvania, United States 24 US AQI▲294
=2352ProvidenceRhode Island, United States 24 US AQI▲219
=2352Weirton HeightsWest Virginia, United States 24 US AQI▲319
=2352LakewoodColorado, United States 24 US AQI▲59
=2352LittletonColorado, United States 24 US AQI▲222
=2352HillsboroOregon, United States 24 US AQI▲157
=2352SilvertonOregon, United States 24 US AQI▼47
=2352LyndenWashington, United States 24 US AQI▲195
=2352DeltaBritish Columbia, Canada 24 US AQI▲93
=2352QuébecQuebec, Canada 24 US AQI▲95
=2352Picnic Point-North LynnwoodWashington, United States 24 US AQI▲165
not rankedWascoIllinois, United States 24 US AQI
not rankedGreenburghNew York, United States 24 US AQI
not rankedAntelopeCalifornia, United States 24 US AQI
=2386SaguntoValencia, Spain 23 US AQI
=2386Caravacalast full day 11 OctMurcia, Spain 23 US AQI
=2386PrestonEngland, United Kingdom 23 US AQI▲194
=2386NottinghamEngland, United Kingdom 23 US AQI▼77
=2386CheltenhamEngland, United Kingdom 23 US AQI▲227
=2386SurseeLucerne, Switzerland 23 US AQI▼102
=2386Eggenstein-LeopoldshafenBaden-Wurttemberg, Germany 23 US AQI▼29
=2386VannesBrittany, France 23 US AQI▼96
=2386ToulouseOccitanie, France 23 US AQI▼95
=2386Saint-ÉtienneAuvergne-Rhône-Alpes, France 23 US AQI▼131
=2386LorientBrittany, France 23 US AQI▼60
=2386La Roche-sur-YonPays de la Loire, France 23 US AQI▲108
=2386La RochelleNew Aquitaine, France 23 US AQI▲109
=2386GapProvence-Alpes-Côte d'Azur, France 23 US AQI▲110
=2386ÉpernayGrand Est, France 23 US AQI▲142
=2386AuxerreBourgogne-Franche-Comté, France 23 US AQI▼166
=2386AlençonNormandy, France 23 US AQI▼20
=2386AvilésAsturias, Spain 23 US AQI
=2386RijekaPrimorje-Gorski Kotar, Croatia 23 US AQI▲299
=2386FilderstadtBaden-Wurttemberg, Germany 23 US AQI▲77
=2386Le RobertMartinique, Martinique 23 US AQI▲144
=2386BearDelaware, United States 23 US AQI▲256
=2386HermitagePennsylvania, United States 23 US AQI▲261
=2386State CollegePennsylvania, United States 23 US AQI▲328
=2386HollisterCalifornia, United States 23 US AQI▲155
=2386VacavilleCalifornia, United States 23 US AQI▲121
=2386FlorenceOregon, United States 23 US AQI▲158
=2386PendletonOregon, United States 23 US AQI▼82
=2386BothellWashington, United States 23 US AQI
=2386EllensburgWashington, United States 23 US AQI▼7
=2386West Vancouverlast full day 11 OctBritish Columbia, Canada 23 US AQI▼4
not rankedJenisonMichigan, United States 23 US AQI
not rankedRacineWisconsin, United States 23 US AQI
not rankedThornton-CleveleysEngland, United Kingdom 23 US AQI
=2417AlmeríaAndalusia, Spain 23 US AQI
=2417Stoke-on-TrentEngland, United Kingdom 23 US AQI▲102
=2417Kingston upon HullEngland, United Kingdom 23 US AQI▲61
=2417GingelomFlanders, Belgium 23 US AQI▼211
=2417TauberbischofsheimBaden-Wurttemberg, Germany 23 US AQI▲67
=2417DublinLeinster, Ireland 23 US AQI▲142
=2417Cluain MealaMunster, Ireland 23 US AQI▲224
=2417ToursCentre-Val de Loire, France 23 US AQI▼96
=2417Saint-NazairePays de la Loire, France 23 US AQI▲176
=2417QuimperBrittany, France 23 US AQI▲72
=2417PerpignanOccitanie, France 23 US AQI▼95
=2417OrléansCentre-Val de Loire, France 23 US AQI▼125
=2417Le MansPays de la Loire, France 23 US AQI▼56
=2417JuignéPays de la Loire, France 23 US AQI▼90
=2417Joué-lès-ToursCentre-Val de Loire, France 23 US AQI▼160
=2417ÉpinalGrand Est, France 23 US AQI▼55
=2417DreuxCentre-Val de Loire, France 23 US AQI▼88
=2417DongesPays de la Loire, France 23 US AQI▼87
=2417CarralGalicia, Spain 23 US AQI
=2417AshburnVirginia, United States 23 US AQI▲269
=2417CharlottesvilleVirginia, United States 23 US AQI▲251
=2417Rose HillVirginia, United States 23 US AQI▲252
=2417SalemVirginia, United States 23 US AQI▲253
=2417LancasterCalifornia, United States 23 US AQI▲125
=2417Las CrucesNew Mexico, United States 23 US AQI▲158

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 1–2 sensors, not ranked 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 mean PM2.5 (µg/m³), last 7 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured 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. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kuala Lumpur, #3 Dhaka, #4 Faisalabad, #5 Kasur, #6 Gujranwala, #7 Lahore, #8 Peshawar, #9 Multan and #10 Jakarta. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Aurassure; Department of Environment, Nepal; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published.

Download top 10 (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 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Aurassure; Department of Environment, Nepal; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).