All 3,198 cities by PM2.5, this year

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.

=893Corpus ChristiTexas, United States 55 US AQI2.3 times the WHO guideline▼104
=893SuperiorWisconsin, United States 55 US AQI2.3 times the WHO guideline▼103
=903IrákleionCrete, Greece 55 US AQI2.2 times the WHO guideline
=903VentspilsVentspils, Latvia 55 US AQI2.2 times the WHO guideline▼138
=903SninaPrešov Region, Slovakia 55 US AQI2.2 times the WHO guideline
=903TrangTrang, Thailand 55 US AQI2.2 times the WHO guideline▼130
=903NiihamaEhime, Japan 55 US AQI2.2 times the WHO guideline▼110
=903Santa Lucíalast full day 11 OctCanary Islands, Spain 55 US AQI2.2 times the WHO guideline
=903Ciudad RealCastille-La Mancha, Spain 55 US AQI2.2 times the WHO guideline
=903Weißenfelslast full day 10 OctSaxony-Anhalt, Germany 55 US AQI2.2 times the WHO guideline▼163
=903Frankfurt (Oder)Brandenburg, Germany 55 US AQI2.2 times the WHO guideline▼121
=903Burg bei Magdeburglast full day 10 OctSaxony-Anhalt, Germany 55 US AQI2.2 times the WHO guideline▼151
=903Bitterfeld-Wolfenlast full day 10 OctSaxony-Anhalt, Germany 55 US AQI2.2 times the WHO guideline▼161
=903MikulovSouth Moravian, Czechia 55 US AQI2.2 times the WHO guideline
=903LjubljanaLjubljana, Slovenia 55 US AQI2.2 times the WHO guideline▲15
=903EdinburgTexas, United States 55 US AQI2.2 times the WHO guideline▼104
=903HighlandsTexas, United States 55 US AQI2.2 times the WHO guideline▼103
=903FresnoCalifornia, United States 55 US AQI2.2 times the WHO guideline▼102
=919BraşovBrașov County, Romania 55 US AQI2.2 times the WHO guideline▼115
=919SofiaSofia-Capital, Bulgaria 55 US AQI2.2 times the WHO guideline▼127
=919ToufenTaiwan, Taiwan 55 US AQI2.2 times the WHO guideline▼102
=919KuryeJeollanam-do, South Korea 55 US AQI2.2 times the WHO guideline▼114
=919VoitsbergStyria, Austria 55 US AQI2.2 times the WHO guideline▼99
=919Oldenburglast full day 10 OctLower Saxony, Germany 55 US AQI2.2 times the WHO guideline▼170
=919CottbusBrandenburg, Germany 55 US AQI2.2 times the WHO guideline▼135
=919Melunlast full day 17 SeptÎle-de-France, France 55 US AQI2.2 times the WHO guideline
=919BogatyniaLower Silesia, Poland 55 US AQI2.2 times the WHO guideline
=919PaulíniaSão Paulo, Brazil 55 US AQI2.2 times the WHO guideline▼108
=919Heroica MatamorosTamaulipas, Mexico 55 US AQI2.2 times the WHO guideline▼107
=919GarcíaNuevo León, Mexico 55 US AQI2.2 times the WHO guideline▼106
=919Franklin ParkIllinois, United States 55 US AQI2.2 times the WHO guideline▼89
=919ComptonCalifornia, United States 55 US AQI2.2 times the WHO guideline▼105
=919Los AngelesCalifornia, United States 55 US AQI2.2 times the WHO guideline▼117
=919VernonBritish Columbia, Canada 55 US AQI2.2 times the WHO guideline▼104
=919KamisuIbaraki, Japan 55 US AQI2.2 times the WHO guideline▼103
=919Blankenfelde-Mahlowlast full day 10 OctBrandenburg, Germany 55 US AQI2.2 times the WHO guideline▼147
=937OnodaYamaguchi, Japan 55 US AQI2.2 times the WHO guideline▼119
=937KurashikiOkayama, Japan 55 US AQI2.2 times the WHO guideline▼118
=937SchiedamSouth Holland, The Netherlands 55 US AQI2.2 times the WHO guideline▼160
=937WeizStyria, Austria 55 US AQI2.2 times the WHO guideline▼97
=937EnnsUpper Austria, Austria 55 US AQI2.2 times the WHO guideline▼85
=937EisenstadtBurgenland, Austria 55 US AQI2.2 times the WHO guideline▼116
=937Bruck an der MurStyria, Austria 55 US AQI2.2 times the WHO guideline▼115
=937Mühlhausenlast full day 10 OctThuringia, Germany 55 US AQI2.2 times the WHO guideline▼176
=937Luckenwaldelast full day 10 OctBrandenburg, Germany 55 US AQI2.2 times the WHO guideline▼156
=937MiddletownOhio, United States 55 US AQI2.2 times the WHO guideline▼91
=937YorkPennsylvania, United States 55 US AQI2.2 times the WHO guideline▼109
=937BrookfieldIllinois, United States 55 US AQI2.2 times the WHO guideline▼108
=937RedfordMichigan, United States 55 US AQI2.2 times the WHO guideline▼106
=937ToledoOhio, United States 55 US AQI2.2 times the WHO guideline▼105
=937HanfordCalifornia, United States 55 US AQI2.2 times the WHO guideline▼104
=937Eagle PassTexas, United States 55 US AQI2.2 times the WHO guideline▼103
=937Dodong-riGyeongsangbuk-do, South Korea 55 US AQI2.2 times the WHO guideline▼102
=954OlsztynWarmia-Masuria, Poland 54 US AQI2.2 times the WHO guideline▼235
=954KochaniKochani, North Macedonia 54 US AQI2.2 times the WHO guideline
=954Tanushimarumachi-toyokiFukuoka, Japan 54 US AQI2.2 times the WHO guideline▼117
=954ŌmutaFukuoka, Japan 54 US AQI2.2 times the WHO guideline▼116
=954Maebaru-chūōlast full day 7 OctFukuoka, Japan 54 US AQI2.2 times the WHO guideline▼115
=954Zeitzlast full day 10 OctSaxony-Anhalt, Germany 54 US AQI2.2 times the WHO guideline▼186
=954Wormslast full day 10 OctRheinland-Pfalz, Germany 54 US AQI2.2 times the WHO guideline▼160
=954Schwedt (Oder)Brandenburg, Germany 54 US AQI2.2 times the WHO guideline▼148
=954NauenBrandenburg, Germany 54 US AQI2.2 times the WHO guideline▼147
=954Ludwigshafen am Rheinlast full day 10 OctRheinland-Pfalz, Germany 54 US AQI2.2 times the WHO guideline▼146
=954Brandenburg an der HavelBrandenburg, Germany 54 US AQI2.2 times the WHO guideline▼144
=954Bösellast full day 10 OctLower Saxony, Germany 54 US AQI2.2 times the WHO guideline▼192
=954CampinasSão Paulo, Brazil 54 US AQI2.2 times the WHO guideline▼127
=954Little RockArkansas, United States 54 US AQI2.2 times the WHO guideline▼109
=954PhiladelphiaPennsylvania, United States 54 US AQI2.2 times the WHO guideline▼107
=954AustinTexas, United States 54 US AQI2.2 times the WHO guideline▼106
=954OwariasahiAichi, Japan 54 US AQI2.2 times the WHO guideline▼105
=954BizenOkayama, Japan 54 US AQI2.2 times the WHO guideline▼104
=972AsprópyrgosAttica, Greece 54 US AQI2.2 times the WHO guideline▼136
=972Zalăulast full day 10 OctSălaj County, Romania 54 US AQI2.2 times the WHO guideline▼169
=972ZhudongTaiwan, Taiwan 54 US AQI2.2 times the WHO guideline▼107
=972Kan’onjichōKagawa, Japan 54 US AQI2.2 times the WHO guideline▼121
=972Prado del ReyAndalusia, Spain 54 US AQI2.2 times the WHO guideline
=972El Planlast full day 11 OctMurcia, Spain 54 US AQI2.2 times the WHO guideline
=972Neuwiedlast full day 10 OctRheinland-Pfalz, Germany 54 US AQI2.2 times the WHO guideline▼177
=972MannheimBaden-Wurttemberg, Germany 54 US AQI2.2 times the WHO guideline▼149
=972Landshutlast full day 10 OctBavaria, Germany 54 US AQI2.2 times the WHO guideline▼117
=972Königs Wusterhausenlast full day 10 OctBrandenburg, Germany 54 US AQI2.2 times the WHO guideline▼163
=972Hamburglast full day 10 OctHamburg, Germany 54 US AQI2.2 times the WHO guideline▼147
=972Dortmundlast full day 10 OctNorth Rhine-Westphalia, Germany 54 US AQI2.2 times the WHO guideline▼189
=972DunkirkHauts-de-France, France 54 US AQI2.2 times the WHO guideline▼105
=972TrebinjeSrpska, Bosnia and Herzegovina 54 US AQI2.2 times the WHO guideline
=972BridgeviewIllinois, United States 54 US AQI2.2 times the WHO guideline▼112
=972DoltonIllinois, United States 54 US AQI2.2 times the WHO guideline▼111
=972ShikokuchūōEhime, Japan 54 US AQI2.2 times the WHO guideline▼108
=989UlmBaden-Wurttemberg, Germany 54 US AQI2.1 times the WHO guideline▼147
=989HeilbronnBaden-Wurttemberg, Germany 54 US AQI2.1 times the WHO guideline▼146
=989Gelsenkirchenlast full day 10 OctNorth Rhine-Westphalia, Germany 54 US AQI2.1 times the WHO guideline▼192
=989Elsterwerdalast full day 10 OctBrandenburg, Germany 54 US AQI2.1 times the WHO guideline▼133
=989Bad Frankenhausenlast full day 10 OctThuringia, Germany 54 US AQI2.1 times the WHO guideline▼191
=989Zagorje ob SaviMunicipality of Zagorje ob Savi, Slovenia 54 US AQI2.1 times the WHO guideline▲27
=989ElginIllinois, United States 54 US AQI2.1 times the WHO guideline▼121
=989OconomowocWisconsin, United States 54 US AQI2.1 times the WHO guideline▼120
=989SandpointIdaho, United States 54 US AQI2.1 times the WHO guideline▼127
=989TsuchiuraIbaraki, Japan 54 US AQI2.1 times the WHO guideline▼119
=999TamanoOkayama, Japan 54 US AQI2.1 times the WHO guideline▼128
=999HiwasauraTokushima, Japan 54 US AQI2.1 times the WHO guideline▼127

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), this year to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 70% or more of the days since 1 January (at least 14). Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=year. Ranked on low-cost sensors, with no reference monitor in the city: #2 Faisalabad, #3 Gujranwala and #6 Lahore. Some values from Sensor.Community, ODbL. Some readings from Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); 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: Department of Environment, Nepal; Vietnam's government monitors; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).