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.

=1958ChambersburgPennsylvania, United States 31 US AQI▲412
=1958HendersonvilleTennessee, United States 31 US AQI▲340
=1958HarrisburgPennsylvania, United States 31 US AQI▲384
=1958PittsburghPennsylvania, United States 31 US AQI▲316
=1958Casa GrandeArizona, United States 31 US AQI▲120
=1958AnthonyNew Mexico, United States 31 US AQI▲49
=1958HobbsNew Mexico, United States 31 US AQI▲121
=1958Fort CollinsColorado, United States 31 US AQI▲10
=1958Columbia FallsMontana, United States 31 US AQI▼151
=1958GlendiveMontana, United States 31 US AQI▲12
=1958SalemOregon, United States 31 US AQI▼149
=1958St. CatharinesOntario, Canada 31 US AQI▲391
=1958Kennedy TownshipPennsylvania, United States 31 US AQI▲285
=1958Albion Park RailNew South Wales, Australia 31 US AQI▲93
=1989GabrovoGabrovo, Bulgaria 30 US AQI▼9
=1989KamaishiIwate, Japan 30 US AQI▲102
=1989ZaanstadNorth Holland, The Netherlands 30 US AQI▼86
=1989VenrayLimburg, The Netherlands 30 US AQI▼473
=1989InnsbruckTyrol, Austria 30 US AQI▲104
=1989HouthalenFlanders, Belgium 30 US AQI▼256
=1989Flémalle-HauteWallonia, Belgium 30 US AQI▼315
=1989RitterhudeLower Saxony, Germany 30 US AQI▼400
=1989LetterkennyUlster, Ireland 30 US AQI▼107
=1989MontbéliardBourgogne-Franche-Comté, France 30 US AQI▲114
=1989ContesProvence-Alpes-Côte d'Azur, France 30 US AQI▲2
=1989AlbertvilleAuvergne-Rhône-Alpes, France 30 US AQI▼104
=1989ChrastavaLiberec Region, Czechia 30 US AQI▲40
=1989HernaniBasque Country, Spain 30 US AQI
=1989AthloneLeinster, Ireland 30 US AQI▲41
=1989BartowFlorida, United States 30 US AQI▲305
=1989Delray BeachFlorida, United States 30 US AQI▲190
=1989Sarasota SpringsFlorida, United States 30 US AQI▲234
=1989HazardKentucky, United States 30 US AQI▲235
=1989ArnoldMissouri, United States 30 US AQI▲46
=1989ClaytonNorth Carolina, United States 30 US AQI▼67
=1989HickoryNorth Carolina, United States 30 US AQI▲158
=1989Roanoke RapidsNorth Carolina, United States 30 US AQI▲159
=1989LoudonTennessee, United States 30 US AQI▲239
=1989PoquosonVirginia, United States 30 US AQI▲161
=1989TaylorMichigan, United States 30 US AQI▲282
=1989BrainerdMinnesota, United States 30 US AQI▼162
=1989Camp VerdeArizona, United States 30 US AQI▲125
=1989GlendaleArizona, United States 30 US AQI▲52
=1989TempeArizona, United States 30 US AQI▲53
=1989GuadalupeCalifornia, United States 30 US AQI▲386
=1989SalinasCalifornia, United States 30 US AQI▲287
=1989San RafaelCalifornia, United States 30 US AQI▲168
=1989North ValleyNew Mexico, United States 30 US AQI▼128
=1989Red BluffCalifornia, United States 30 US AQI▼60
=1989YrekaCalifornia, United States 30 US AQI▼22
=1989MadrasOregon, United States 30 US AQI▲56
=1989StaytonOregon, United States 30 US AQI▼59
=1989ShorelineWashington, United States 30 US AQI▼56
=1989BramptonOntario, Canada 30 US AQI▲428
=1989KamloopsBritish Columbia, Canada 30 US AQI▼54
=1989LangleyBritish Columbia, Canada 30 US AQI▲98
=1989SarniaOntario, Canada 30 US AQI▲430
=1989RangioraCanterbury, New Zealand 30 US AQI▼13
not rankedWoodburyMinnesota, United States 30 US AQI
=2033VentspilsVentspils, Latvia 29 US AQI▲388
=2033RiversdaleWestern Cape, South Africa 29 US AQI▲19
=2033NarrabriNew South Wales, Australia 29 US AQI▲93
=2033DunedinOtago, New Zealand 29 US AQI▲94
=2033Thornaby-on-TeesEngland, United Kingdom 29 US AQI▲21
=2033BradfordEngland, United Kingdom 29 US AQI▲59
=2033BlackpoolEngland, United Kingdom 29 US AQI▲280
=2033WaalreNorth Brabant, The Netherlands 29 US AQI▼421
=2033NoordwijkerhoutSouth Holland, The Netherlands 29 US AQI▲96
=2033LunterenGelderland, The Netherlands 29 US AQI▼482
=2033GalwayConnacht, Ireland 29 US AQI▲181
=2033CalahorraLa Rioja, Spain 29 US AQI
=2033Nova GoricaUrban Municipality of Nova Gorica, Slovenia 29 US AQI▼268
=2033Coconut CreekFlorida, United States 29 US AQI▲228
=2033Pompano BeachFlorida, United States 29 US AQI▲148
=2033Valricolast full day 11 OctFlorida, United States 29 US AQI▲110
=2033AshevilleNorth Carolina, United States 29 US AQI▲303
=2033South VinelandNew Jersey, United States 29 US AQI▲264
=2033Toms RiverNew Jersey, United States 29 US AQI▲193
=2033ElizabethNew Jersey, United States 29 US AQI▲435
=2033AbingtonPennsylvania, United States 29 US AQI▲198
=2033Beaver FallsPennsylvania, United States 29 US AQI▲374
=2033El RioCalifornia, United States 29 US AQI▲82
=2033Spanish SpringsNevada, United States 29 US AQI▼67
=2033Crescent CityCalifornia, United States 29 US AQI▲381
=2033AlbanyOregon, United States 29 US AQI▼25
=2033TalentOregon, United States 29 US AQI▼102
=2033WoodburnOregon, United States 29 US AQI▼23
=2033SmithfieldUtah, United States 29 US AQI▼22
=2033SeattleWashington, United States 29 US AQI▼223
=2033BurnabyBritish Columbia, Canada 29 US AQI▼99
=2033CranbrookBritish Columbia, Canada 29 US AQI▼59
=2033OakvilleOntario, Canada 29 US AQI▲441
=2033Strawberry HillBritish Columbia, Canada 29 US AQI▼20
=2033Dallgow-DöberitzBrandenburg, Germany 29 US AQI▼56
not rankedTielGelderland, The Netherlands 29 US AQI
=2068RostusaMavrovo and Rostuša, North Macedonia 29 US AQI▼437
=2068ManzanaresCastille-La Mancha, Spain 29 US AQI
=2068MaidstoneEngland, United Kingdom 29 US AQI▼127
=2068LondonEngland, United Kingdom 29 US AQI▼13
=2068MaassluisSouth Holland, The Netherlands 29 US AQI▼336

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).