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.

=1400RosevilleCalifornia, United States 41 US AQI▼2
=1400Hitachi-NakaIbaraki, Japan 41 US AQI▲176
=1400InashikiIbaraki, Japan 41 US AQI▲95
=1400Sunshine CoastQueensland, Australia 41 US AQI▲292
not rankedAbovyanKotayk, Armenia 41 US AQI
not rankedMaleKaafu Atoll, Maldives 41 US AQI
not rankedSanta RitaYoro Department, Honduras 41 US AQI
not rankedJefferson CityMissouri, United States 41 US AQI
=1432IrákleionCrete, Greece 41 US AQI▼132
=1432SninaPrešov Region, Slovakia 41 US AQI▼454
=1432SevlievoGabrovo, Bulgaria 41 US AQI▲70
=1432UenoharaYamanashi, Japan 41 US AQI▲175
=1432MatsutōIshikawa, Japan 41 US AQI▲178
=1432KogaIbaraki, Japan 41 US AQI▲235
=1432IkarugaHyōgo, Japan 41 US AQI▲112
=1432TōganeChiba, Japan 41 US AQI
=1432OmigawaChiba, Japan 41 US AQI▲114
=1432KōzakiChiba, Japan 41 US AQI▲80
=1432MuswellbrookNew South Wales, Australia 41 US AQI▼122
=1432Cartagenalast full day 11 OctMurcia, Spain 41 US AQI
=1432CarlisleEngland, United Kingdom 41 US AQI▼53
=1432Sankt PöltenLower Austria, Austria 41 US AQI▼387
=1432ValenciennesHauts-de-France, France 41 US AQI▼413
=1432BratislavaBratislava Region, Slovakia 41 US AQI▼539
=1432SopotPomerania, Poland 41 US AQI▼74
=1432ZallaBasque Country, Spain 41 US AQI
=1432l'AlcoraValencia, Spain 41 US AQI
=1432Murska SobotaUrban Municipality of Murska Sobota, Slovenia 41 US AQI▼650
=1432DouglasGeorgia, United States 41 US AQI▲133
=1432SavannahGeorgia, United States 41 US AQI▼13
=1432Valley StationKentucky, United States 41 US AQI▲220
=1432LafayetteLouisiana, United States 41 US AQI▲14
=1432SpringfieldOhio, United States 41 US AQI▼40
=1432MissionTexas, United States 41 US AQI▲53
=1432Mission BendTexas, United States 41 US AQI▼177
=1432EvanstonIllinois, United States 41 US AQI▲311
=1432HammondIndiana, United States 41 US AQI▲287
=1432South BendIndiana, United States 41 US AQI▲253
=1432KalamazooMichigan, United States 41 US AQI▲188
=1432La VistaNebraska, United States 41 US AQI▲101
=1432South Lake TahoeCalifornia, United States 41 US AQI▲24
=1432TracyCalifornia, United States 41 US AQI▼7
=1432TacomaWashington, United States 41 US AQI▼170
=1432EstevanSaskatchewan, Canada 41 US AQI▼141
=1432ŌshūIwate, Japan 41 US AQI▲196
=1432MorouraSaga, Japan 41 US AQI▲107
=1432SodegauraChiba, Japan 41 US AQI▲198
=1432Dodong-riGyeongsangbuk-do, South Korea 41 US AQI▲172
not rankedDiourbelDiourbel Region, Senegal 41 US AQI
not rankedBusto ArsizioLombardy, Italy 41 US AQI
not rankedSpringTexas, United States 41 US AQI
not rankedCliveIowa, United States 41 US AQI
not rankedLakevilleMinnesota, United States 41 US AQI
=1472TarnówLesser Poland, Poland 40 US AQI▲31
=1472HokotaIbaraki, Japan 40 US AQI▲139
=1472Sankt ValentinLower Austria, Austria 40 US AQI▼391
=1472KlosterneuburgLower Austria, Austria 40 US AQI▼481
=1472AmstettenLower Austria, Austria 40 US AQI▼324
=1472EnnisMunster, Ireland 40 US AQI▼56
=1472TrnavaTrnava Region, Slovakia 40 US AQI▼580
=1472Chorvátsky Grob - Čierna VodaBratislava Region, Slovakia 40 US AQI▼653
=1472MikulovSouth Moravian, Czechia 40 US AQI▲5
=1472OriaBasque Country, Spain 40 US AQI
=1472ManlleuCatalonia, Spain 40 US AQI
=1472Fort SmithArkansas, United States 40 US AQI▼54
=1472HelotesTexas, United States 40 US AQI▼79
=1472BurnsvilleMinnesota, United States 40 US AQI▼111
=1472WestervilleOhio, United States 40 US AQI▲249
=1472BrookingsSouth Dakota, United States 40 US AQI▼108
=1472FlagstaffArizona, United States 40 US AQI▲150
=1472ConcordCalifornia, United States 40 US AQI▲102
=1472GreshamOregon, United States 40 US AQI▼252
=1472AuburnWashington, United States 40 US AQI▼412
=1472TerraceBritish Columbia, Canada 40 US AQI▲255
=1472MinamiashigaraKanagawa, Japan 40 US AQI▲218
=1472MinamiuonumaNiigata, Japan 40 US AQI▲25
not rankedSan ClementeCalifornia, United States 40 US AQI
=1495GeroGifu, Japan 39 US AQI▲404
=1495Niitsu-honchōNiigata, Japan 39 US AQI▲45
=1495MitaiMiyazaki, Japan 39 US AQI▲46
=1495KanazawaIshikawa, Japan 39 US AQI▲85
=1495ToowoombaQueensland, Australia 39 US AQI▲287
=1495LinzUpper Austria, Austria 39 US AQI▼288
=1495ArrasHauts-de-France, France 39 US AQI▲29
=1495PezinokBratislava Region, Slovakia 39 US AQI▼631
=1495HodonínSouth Moravian, Czechia 39 US AQI▲121
=1495DurangoBasque Country, Spain 39 US AQI
=1495LaivesTrentino-Alto Adige, Italy 39 US AQI▼136
=1495Novo MestoUrban Municipality of Novo Mesto, Slovenia 39 US AQI▼367
=1495BessemerAlabama, United States 39 US AQI▲185
=1495DecaturAlabama, United States 39 US AQI▲214
=1495EvansvilleIndiana, United States 39 US AQI▲156
=1495PennsaukenNew Jersey, United States 39 US AQI▲329
=1495Timberwood ParkTexas, United States 39 US AQI▼47
=1495MuscatineIowa, United States 39 US AQI▲101
=1495Columbia CityIndiana, United States 39 US AQI▲223
=1495DetroitMichigan, United States 39 US AQI▲225
=1495Saint MichaelMinnesota, United States 39 US AQI▼133
=1495BurbankCalifornia, United States 39 US AQI▲105
=1495VallejoCalifornia, United States 39 US AQI▼6

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).