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.

=1855AppletonWisconsin, United States 32 US AQI▲222
=1855BarabooWisconsin, United States 32 US AQI▲148
=1855GreeleyColorado, United States 32 US AQI▲8
=1855PierreSouth Dakota, United States 32 US AQI▲77
=1855Cedar Hillslast full day 11 OctUtah, United States 32 US AQI▲192
=1855RentonWashington, United States 32 US AQI▼129
=1855BrantfordOntario, Canada 32 US AQI▲424
=1855NewmarketOntario, Canada 32 US AQI▲618
not rankedSiavongaSouthern Province, Zambia 32 US AQI
not rankedPetalumaCalifornia, United States 32 US AQI
not rankedVenturaCalifornia, United States 32 US AQI
=1891NonoichiIshikawa, Japan 32 US AQI▲199
=1891TraralgonVictoria, Australia 32 US AQI
=1891CandelariaCanary Islands, Spain 32 US AQI
=1891BurrianaValencia, Spain 32 US AQI
=1891BunyolaBalearic Islands, Spain 32 US AQI
=1891CardiffWales, United Kingdom 32 US AQI▲237
=1891VoitsbergStyria, Austria 32 US AQI▼191
=1891GrimbergenFlanders, Belgium 32 US AQI▼336
=1891DammeFlanders, Belgium 32 US AQI▼372
=1891SulzbachHesse, Germany 32 US AQI▲54
=1891Schwedt (Oder)Brandenburg, Germany 32 US AQI▼157
=1891HeilbronnBaden-Wurttemberg, Germany 32 US AQI▼12
=1891LavalPays de la Loire, France 32 US AQI▲135
=1891DenainHauts-de-France, France 32 US AQI▼329
=1891GyöngyösHeves County, Hungary 32 US AQI▼300
=1891Donostia / San SebastiánBasque Country, Spain 32 US AQI
=1891AmorebietaBasque Country, Spain 32 US AQI
=1891Vareselast full day 11 OctLombardy, Italy 32 US AQI
=1891Biograd na MoruZadar, Croatia 32 US AQI▲101
=1891WashingtonDistrict of Columbia, United States 32 US AQI▲251
=1891MiamiFlorida, United States 32 US AQI▲178
=1891Hunt ValleyMaryland, United States 32 US AQI▲293
=1891ColumbiaMissouri, United States 32 US AQI▲66
=1891RaymoreMissouri, United States 32 US AQI▲67
=1891Winston-SalemNorth Carolina, United States 32 US AQI▲258
=1891LebanonOhio, United States 32 US AQI▲336
=1891PalmyraNew Jersey, United States 32 US AQI▲382
=1891MedinaOhio, United States 32 US AQI▲339
=1891WilkinsburgPennsylvania, United States 32 US AQI▲342
=1891AtascaderoCalifornia, United States 32 US AQI▲301
=1891North AuburnCalifornia, United States 32 US AQI▲263
=1891Twin FallsIdaho, United States 32 US AQI▼58
=1891LockwoodMontana, United States 32 US AQI▼83
=1891AshlandOregon, United States 32 US AQI▼27
=1891ChehalisWashington, United States 32 US AQI▲80
=1891AbbotsfordBritish Columbia, Canada 32 US AQI▲4
=1891LethbridgeAlberta, Canada 32 US AQI▼22
=1891LondonOntario, Canada 32 US AQI▲348
=1891VancouverBritish Columbia, Canada 32 US AQI▼80
not rankedLas Rozas de MadridMadrid, Spain 32 US AQI
not rankedTegucigalpaFrancisco Morazán Department, Honduras 32 US AQI
not rankedParkvilleMaryland, United States 32 US AQI
not rankedNapaCalifornia, United States 32 US AQI
=1930AnamizuIshikawa, Japan 31 US AQI▲88
=1930AdelaideSouth Australia, Australia 31 US AQI▲52
=1930ChristchurchCanterbury, New Zealand 31 US AQI▲10
=1930UlmBaden-Wurttemberg, Germany 31 US AQI▼82
=1930ParisÎle-de-France, France 31 US AQI▼284
=1930MulhouseGrand Est, France 31 US AQI▼79
=1930DoleBourgogne-Franche-Comté, France 31 US AQI▼17
=1930AnnemasseAuvergne-Rhône-Alpes, France 31 US AQI▼46
=1930McDonoughGeorgia, United States 31 US AQI▲334
=1930Highland HeightsKentucky, United States 31 US AQI▲335
=1930DurhamNorth Carolina, United States 31 US AQI▲177
=1930ChesapeakeVirginia, United States 31 US AQI▲143
=1930SavoyIllinois, United States 31 US AQI▲179
=1930EastpointeMichigan, United States 31 US AQI▲181
=1930Port HuronMichigan, United States 31 US AQI▲410
=1930SouthfieldMichigan, United States 31 US AQI▲258
=1930New AlbanyOhio, United States 31 US AQI▲370
=1930NogalesArizona, United States 31 US AQI▼39
=1930SebastopolCalifornia, United States 31 US AQI▲186
=1930SolvangCalifornia, United States 31 US AQI▲187
=1930RenoNevada, United States 31 US AQI▼2
=1930PortlandOregon, United States 31 US AQI▲79
=1930Airway HeightsWashington, United States 31 US AQI▼63
=1930YakimaWashington, United States 31 US AQI▼62
=1930EdmontonAlberta, Canada 31 US AQI▲156
=1930KelownaBritish Columbia, Canada 31 US AQI▲45
=1930KitimatBritish Columbia, Canada 31 US AQI▲195
=1930ReginaSaskatchewan, Canada 31 US AQI▼33
not rankedEast MolineIllinois, United States 31 US AQI
=1958Gorna OryahovitsaVeliko Tarnovo, Bulgaria 31 US AQI▼88
=1958Matsuelast full day 11 OctShimane, Japan 31 US AQI▲23
=1958Happy ValleySouth Australia, Australia 31 US AQI▲95
=1958CairnsQueensland, Australia 31 US AQI▲208
=1958AmsterdamNorth Holland, The Netherlands 31 US AQI▼172
=1958VeurneFlanders, Belgium 31 US AQI▼404
=1958WaterfordMunster, Ireland 31 US AQI▲255
=1958SarcellesÎle-de-France, France 31 US AQI▼46
=1958MarmandeNew Aquitaine, France 31 US AQI▲66
=1958GardanneProvence-Alpes-Côte d'Azur, France 31 US AQI▲183
=1958MariborUrban Municipality of Maribor, Slovenia 31 US AQI▼366
=1958CayenneGuyane, French Guiana 31 US AQI▲110
=1958JacksonvilleFlorida, United States 31 US AQI▲222
=1958Safety HarborFlorida, United States 31 US AQI▲338
=1958ClemmonsNorth Carolina, United States 31 US AQI▲227
=1958RaleighNorth Carolina, United States 31 US AQI▲114
=1958TarboroNorth Carolina, United States 31 US AQI▲1

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).