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.

=1068NisshinAichi, Japan 47 US AQI▼21
=1068Arden-ArcadeCalifornia, United States 47 US AQI▼51
=1103AsprópyrgosAttica, Greece 47 US AQI▼200
=1103TarnówLesser Poland, Poland 47 US AQI▲348
=1103Si Sa KetSi Sa Ket, Thailand 47 US AQI▼110
=1103Hualien CityTaiwan, Taiwan 47 US AQI▲18
=1103TakeoSaga, Japan 47 US AQI▼80
=1103SetoAichi, Japan 47 US AQI▼15
=1103ŌitaOita, Japan 47 US AQI▼76
=1103MieOita, Japan 47 US AQI▼75
=1103KureHiroshima, Japan 47 US AQI▼127
=1103Kashima-shiIbaraki, Japan 47 US AQI▼73
=1103IwadeWakayama, Japan 47 US AQI▼106
=1103GyōdaSaitama, Japan 47 US AQI▼104
=1103GifuGifu, Japan 47 US AQI▼71
=1103ValenciaValencia, Spain 47 US AQI▼194
=1103Oranienburglast full day 10 OctBrandenburg, Germany 47 US AQI▼142
=1103EisenhüttenstadtBrandenburg, Germany 47 US AQI▼141
=1103PartizánskeTrenčín Region, Slovakia 47 US AQI▼163
=1103LiberecLiberec Region, Czechia 47 US AQI
=1103GijónAsturias, Spain 47 US AQI
=1103AmorebietaBasque Country, Spain 47 US AQI▼120
=1103SrbacSrpska, Bosnia and Herzegovina 47 US AQI▼118
=1103San Juan del RíoQuerétaro, Mexico 47 US AQI▼138
=1103CotaCundinamarca, Colombia 47 US AQI
=1103ValdostaGeorgia, United States 47 US AQI▲8
=1103CatoosaOklahoma, United States 47 US AQI▼91
=1103DentonTexas, United States 47 US AQI▼114
=1103GridleyCalifornia, United States 47 US AQI▼113
=1103San LeandroCalifornia, United States 47 US AQI▼111
=1103HashimaGifu, Japan 47 US AQI▼55
=1103BizenOkayama, Japan 47 US AQI▼85
=1133Zalăulast full day 10 OctSălaj County, Romania 46 US AQI▼114
=1133SofiaSofia-Capital, Bulgaria 46 US AQI▼113
=1133Port ShepstoneKwaZulu-Natal, South Africa 46 US AQI▼206
=1133YangguGangwon-do, South Korea 46 US AQI▼139
=1133Hongch’ŏnGangwon-do, South Korea 46 US AQI▼112
=1133TsukumiuraOita, Japan 46 US AQI▼81
=1133TenriNara, Japan 46 US AQI▼80
=1133TatebayashiGunma, Japan 46 US AQI▼79
=1133SagaSaga, Japan 46 US AQI▼108
=1133ŌtakeHiroshima, Japan 46 US AQI▼107
=1133Kitakyushulast full day 11 OctFukuoka, Japan 46 US AQI▼202
=1133KashiwaraNara, Japan 46 US AQI▼76
=1133KashimaSaga, Japan 46 US AQI▼75
=1133IseMie, Japan 46 US AQI▼42
=1133AnanTokushima, Japan 46 US AQI▼71
=1133LisbonLisbon, Portugal 46 US AQI
=1133Cartagenalast full day 11 OctMurcia, Spain 46 US AQI
=1133VenrayLimburg, The Netherlands 46 US AQI▼156
=1133NijmegenGelderland, The Netherlands 46 US AQI▼130
=1133LeibnitzStyria, Austria 46 US AQI▼154
=1133ZelzateFlanders, Belgium 46 US AQI▼129
=1133Speyerlast full day 10 OctRheinland-Pfalz, Germany 46 US AQI▼196
=1133Ludwigslustlast full day 10 OctMecklenburg-Vorpommern, Germany 46 US AQI▼240
=1133Lindaulast full day 10 OctBavaria, Germany 46 US AQI▼195
=1133Essenlast full day 10 OctNorth Rhine-Westphalia, Germany 46 US AQI
=1133ŻaryLubusz, Poland 46 US AQI▲734
=1133CalahorraLa Rioja, Spain 46 US AQI
=1133l'AlcoraValencia, Spain 46 US AQI
=1133Borgo ValsuganaTrentino-Alto Adige, Italy 46 US AQI▼149
=1133East Saint LouisIllinois, United States 46 US AQI▼145
=1133St. LouisMissouri, United States 46 US AQI▼122
=1133NorwoodOhio, United States 46 US AQI▼92
=1133San AntonioTexas, United States 46 US AQI▼119
=1133ThrakomakedónesAttica, Greece 46 US AQI
=1133KuwanaMie, Japan 46 US AQI▼14
=1133MizuhoGifu, Japan 46 US AQI▼50
=1169YawataKyoto, Japan 46 US AQI▼45
=1169MinamirinkanKanagawa, Japan 46 US AQI▼113
=1169IkedachōTokushima, Japan 46 US AQI▼109
=1169FukuokaFukuoka, Japan 46 US AQI▼136
=1169AmagasakiHyōgo, Japan 46 US AQI▼106
=1169ImabariEhime, Japan 46 US AQI▼167
=1169Ciudad RealCastille-La Mancha, Spain 46 US AQI
=1169BarneveldGelderland, The Netherlands 46 US AQI▼133
=1169Wormslast full day 10 OctRheinland-Pfalz, Germany 46 US AQI▼233
=1169Aschaffenburglast full day 10 OctBavaria, Germany 46 US AQI▼98
=1169MontpellierOccitanie, France 46 US AQI▲511
=1169ŽilinaŽilina Region, Slovakia 46 US AQI▼130
=1169PezinokBratislava Region, Slovakia 46 US AQI▼189
=1169Cadereyta JiménezNuevo León, Mexico 46 US AQI▼161
=1169ClevelandMississippi, United States 46 US AQI▼129
=1169MooreOklahoma, United States 46 US AQI▼127
=1169River OaksTexas, United States 46 US AQI▼126
=1169Wittenberglast full day 10 OctSaxony-Anhalt, Germany 46 US AQI▼52
=1169MinamichitaAichi, Japan 46 US AQI▼51
=1169AmaAichi, Japan 46 US AQI▼49
=1169KaminomaAichi, Japan 46 US AQI▲14
=1190SanzhiTaipei, Taiwan 45 US AQI▼2
=1190JumunjinGangwon-do, South Korea 45 US AQI▼139
=1190Cheongsong gunGyeongsangbuk-do, South Korea 45 US AQI▼105
=1190Jinan-gunlast full day 8 OctJeollabuk-do, South Korea 45 US AQI▼195
=1190TsurusakiOita, Japan 45 US AQI▼65
=1190TobaMie, Japan 45 US AQI▼64
=1190MenumaSaitama, Japan 45 US AQI▼100
=1190Maebaru-chūōlast full day 7 OctFukuoka, Japan 45 US AQI▼161
=1190KochiKochi, Japan 45 US AQI▼60
=1190MatsuyamaEhime, Japan 45 US AQI▼155
=1190TullnLower Austria, Austria 45 US AQI▼93

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).