All 3,291 cities by PM2.5, last 30 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.

=895Mission ViejoCalifornia, United States 52 US AQI▼122
=895San JoseCalifornia, United States 52 US AQI▼98
=903Yangp'yŏngGyeonggi-do, South Korea 51 US AQI▼102
=903KimhaeGyeongsangnam-do, South Korea 51 US AQI▼86
=903TogitsuNagasaki, Japan 51 US AQI▼69
=903SusakiKochi, Japan 51 US AQI▼83
=903Shin’ichiHiroshima, Japan 51 US AQI▼101
=903NiihamaEhime, Japan 51 US AQI▼115
=903GwangyangJeollanam-do, South Korea 51 US AQI▼123
=903MostaIl-Mosta, Malta 51 US AQI▼98
=903EnnsUpper Austria, Austria 51 US AQI▼97
=903PardubicePardubice Region, Czechia 51 US AQI
=903KadaňÚstí nad Labem Region, Czechia 51 US AQI
=903SzczecinWest Pomerania, Poland 51 US AQI▲39
=903SopotPomerania, Poland 51 US AQI
=903MadridMadrid, Spain 51 US AQI▲79
=903SalernoCampania, Italy 51 US AQI▼111
=903Nocera InferioreCampania, Italy 51 US AQI▼43
=903DouglasGeorgia, United States 51 US AQI▼77
=903ColusaCalifornia, United States 51 US AQI▼107
=921GijangBusan, South Korea 51 US AQI▼69
=921ChinjuGyeongsangnam-do, South Korea 51 US AQI▼103
=921Tanushimarumachi-toyokiFukuoka, Japan 51 US AQI▼86
=921KushikinoKagoshima, Japan 51 US AQI▼85
=921UngsangGyeongsangnam-do, South Korea 51 US AQI▼84
=921Teltowlast full day 10 OctBrandenburg, Germany 51 US AQI
=921MalackyBratislava Region, Slovakia 51 US AQI▼98
=921Frýdek-MístekMoravian-Silesian Region, Czechia 51 US AQI
=921Gorzów WielkopolskiLubusz, Poland 51 US AQI▲187
=921ZallaBasque Country, Spain 51 US AQI▼62
=921CampinasSão Paulo, Brazil 51 US AQI▼112
=921MontgomeryAlabama, United States 51 US AQI▼59
=921SpringdaleArkansas, United States 51 US AQI▼78
=921ChattanoogaTennessee, United States 51 US AQI▼42
=921PasadenaTexas, United States 51 US AQI▼94
=921AnaheimCalifornia, United States 51 US AQI▼111
=921MantecaCalifornia, United States 51 US AQI▼110
=938Isaccealast full day 10 OctTulcea County, Romania 51 US AQI▼53
=938BraşovBrașov County, Romania 51 US AQI▼34
=938PyeongchangGangwon-do, South Korea 51 US AQI▼87
=938GoseongGyeongsangnam-do, South Korea 51 US AQI▼105
=938ChiryūAichi, Japan 51 US AQI▼30
=938CanberraAustralian Capital Territory, Australia 51 US AQI▼100
=938BurrianaValencia, Spain 51 US AQI▼156
=938LinzUpper Austria, Austria 51 US AQI▼84
=938Oldenburglast full day 10 OctLower Saxony, Germany 51 US AQI▼149
=938Dortmundlast full day 10 OctNorth Rhine-Westphalia, Germany 51 US AQI
=938Bösellast full day 10 OctLower Saxony, Germany 51 US AQI▼147
=938BrnoSouth Moravian, Czechia 51 US AQI
=938KołobrzegWest Pomerania, Poland 51 US AQI
=938OriaBasque Country, Spain 51 US AQI▼81
=938Santa Maria A VicoCampania, Italy 51 US AQI▼63
=938BogotáBogota D.C., Colombia 51 US AQI
=938EdmondOklahoma, United States 51 US AQI▼94
=938BartlettTennessee, United States 51 US AQI▼93
=938Wells BranchTexas, United States 51 US AQI▼91
=938HigashigōSaga, Japan 51 US AQI▼54
=958SidonSouth Governorate, Lebanon 50 US AQI▼144
=958Timişoaralast full day 10 OctTimiș County, Romania 50 US AQI▼127
=958VarnaVarna, Bulgaria 50 US AQI▼143
=958Ohridlast full day 10 OctOhrid, North Macedonia 50 US AQI▼126
=958SukhothaiSukhothai, Thailand 50 US AQI▼91
=958SurinSurin, Thailand 50 US AQI▼90
=958MinatoWakayama, Japan 50 US AQI▼88
=958Sankt ValentinLower Austria, Austria 50 US AQI▼119
=958Munichlast full day 11 OctBavaria, Germany 50 US AQI▼168
=958PécsBaranya, Hungary 50 US AQI▼85
=958TrnavaTrnava Region, Slovakia 50 US AQI▼117
=958PiracicabaSão Paulo, Brazil 50 US AQI▼81
=958Duque de CaxiasRio de Janeiro, Brazil 50 US AQI▼40
=958Heroica MatamorosTamaulipas, Mexico 50 US AQI▼97
=958CuernavacaMorelos, Mexico 50 US AQI▼116
=958Granite CityIllinois, United States 50 US AQI▼95
=958HattiesburgMississippi, United States 50 US AQI▼62
=958Fort WorthTexas, United States 50 US AQI▼112
=958Texarkanalast full day 11 OctTexas, United States 50 US AQI▼78
=958Santa MonicaCalifornia, United States 50 US AQI▼146
=958TorranceCalifornia, United States 50 US AQI▼11
=979TaitungTaiwan, Taiwan 49 US AQI▼51
=979NagoyaAichi, Japan 49 US AQI▼23
=979MiyazakiMiyazaki, Japan 49 US AQI▼91
=979HandaAichi, Japan 49 US AQI▼47
=979ValenciennesHauts-de-France, France 49 US AQI▼107
=979ŠahyNitra Region, Slovakia 49 US AQI▼65
=979České BudějoviceSouth Bohemian Region, Czechia 49 US AQI
=979Laudio / LlodioBasque Country, Spain 49 US AQI▼121
=979CeeGalicia, Spain 49 US AQI
=979BeasainBasque Country, Spain 49 US AQI▼105
=979Attnang-PuchheimUpper Austria, Austria 49 US AQI▼103
=979SorocabaSão Paulo, Brazil 49 US AQI▼62
=979ItaguaíRio de Janeiro, Brazil 49 US AQI▼85
=979Santa CatarinaNuevo León, Mexico 49 US AQI▼101
=979HighlandsTexas, United States 49 US AQI▼82
=979WindcrestTexas, United States 49 US AQI▼131
=979Long BeachCalifornia, United States 49 US AQI▼130
=979Great FallsMontana, United States 49 US AQI▼97
=979ShintomiMiyazaki, Japan 49 US AQI▼96
=998BardejovPrešov Region, Slovakia 49 US AQI▼132
=998PrzemyślSubcarpathia, Poland 49 US AQI▲155
=998IlindenIlinden, North Macedonia 49 US AQI▼111

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.

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 30 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 21 or more of the 30 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=30d. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kasur, #2 Gujranwala, #3 Kuala Lumpur, #5 Lahore, #6 Faisalabad, #9 Peshawar and #10 Dhaka. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; 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 low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Vietnam's government monitors; 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).