All 2,581 cities by PM2.5, last 24 hours

Every city with enough measurements in this window, worst first.

CPCB in India: no readings since 7 Oct (488 monitors). EEA in Spain: no readings since 10 Oct (310 monitors). Catalonia Medi Ambient I Sostenibilitat in Spain: no readings since 9 Oct (26 monitors). Their cities are missing from this board, not clean.

298ChiguayanteBiobio, Chile 63 US AQI1.0 times the WHO guideline▼111
=302UttaraditUttaradit, Thailand 63 US AQI1.0 times the WHO guideline▲56
=302HamamatsuShizuoka, Japan 63 US AQI1.0 times the WHO guideline▼5
=302UžiceCentral Serbia, Serbia 63 US AQI1.0 times the WHO guideline▲646
=305AnseongGyeonggi-do, South Korea 63 US AQI1.0 times the WHO guideline▼41
=305TokonameAichi, Japan 63 US AQI1.0 times the WHO guideline▼173
=305SaseboNagasaki, Japan 63 US AQI1.0 times the WHO guideline▲38
=305Jastrzębie ZdrójSilesia, Poland 63 US AQI1.0 times the WHO guideline▲540
=305TalcaMaule Region, Chile 63 US AQI1.0 times the WHO guideline▼214
=310SintansinDaejeon, South Korea 63 US AQI1.0 times the WHO guideline▼47
=310HandaAichi, Japan 63 US AQI1.0 times the WHO guideline▼146
=310TalaganteSantiago Metropolitan, Chile 63 US AQI1.0 times the WHO guideline▼107
=313Kamphaeng PhetKamphaeng Phet, Thailand 63 US AQI1.0 times the WHO guideline▲142
=313PokharaGandaki Pradesh, Nepal 63 US AQI1.0 times the WHO guideline▼26
=313GotembaShizuoka, Japan 63 US AQI1.0 times the WHO guideline▼15
=313TshiterekeLimpopo, South Africa 63 US AQI1.0 times the WHO guideline▼150
=317PhayaoPhayao, Thailand 62 US AQI1.0 times the WHO guideline▲91
=317CalamaAntofagasta, Chile 62 US AQI1.0 times the WHO guideline▼16
=317AntofagastaAntofagasta, Chile 62 US AQI1.0 times the WHO guideline▼96
=320SukhothaiSukhothai, Thailand 62 US AQI1.0 times the WHO guideline▲183
=320Gold CoastQueensland, Australia 62 US AQI1.0 times the WHO guideline▲450
=322WaegwanGyeongsangbuk-do, South Korea 62 US AQI1.0 times the WHO guideline▲3
=322KinzanChungcheongnam-do, South Korea 62 US AQI1.0 times the WHO guideline▼130
=322IseMie, Japan 62 US AQI1.0 times the WHO guideline▼11
=322TakuSaga, Japan 62 US AQI1.0 times the WHO guideline▲75
=326SanzhiTaipei, Taiwan 62 US AQI1.0 times the WHO guideline▲357
=326Fidenzalow-cost sensorsEmilia-Romagna, Italy 62 US AQI1.0 times the WHO guideline
=326NilópolisRio de Janeiro, Brazil 62 US AQI1.0 times the WHO guideline▼280
=329GwangjuGyeonggi-do, South Korea 62 US AQI1.0 times the WHO guideline▼13
=329KoesanNorth Chungcheong, South Korea 62 US AQI1.0 times the WHO guideline▼111
=329HonmachiKumamoto, Japan 62 US AQI1.0 times the WHO guideline▲748
=329GyōdaSaitama, Japan 62 US AQI1.0 times the WHO guideline▼44
=329TōkaiAichi, Japan 62 US AQI1.0 times the WHO guideline▼149
=334Samut PrakanSamut Prakan, Thailand 61 US AQI1.0 times the WHO guideline▲411
=334Nong ChokBangkok, Thailand 61 US AQI1.0 times the WHO guideline▲742
=334SagaSaga, Japan 61 US AQI1.0 times the WHO guideline▼25
=337Bang NaBangkok, Thailand 61 US AQI1.0 times the WHO guideline▲289
=337TamanaKumamoto, Japan 61 US AQI1.0 times the WHO guideline▲92
=337ShibukawaGunma, Japan 61 US AQI1.0 times the WHO guideline▲44
=337ŌtaGunma, Japan 61 US AQI1.0 times the WHO guideline▲67
=337PljevljaPljevlja, Montenegro 61 US AQI1.0 times the WHO guideline▼1
=337Pachuca de SotoHidalgo, Mexico 61 US AQI1.0 times the WHO guideline
=337BirminghamAlabama, United States 61 US AQI1.0 times the WHO guideline▲1150
=337OwariasahiAichi, Japan 61 US AQI1.0 times the WHO guideline▼131
=345MiddelburgMpumalanga, South Africa 61 US AQI1.0 times the WHO guideline▲549
=345Ban Talat BuengChon Buri, Thailand 61 US AQI1.0 times the WHO guideline▲300
=345Yangp'yŏngGyeonggi-do, South Korea 61 US AQI1.0 times the WHO guideline▲23
=345ŌitaOita, Japan 61 US AQI1.0 times the WHO guideline▲70
=345FukuokaFukuoka, Japan 61 US AQI1.0 times the WHO guideline▲94
=345Laem ChabangChon Buri, Thailand 61 US AQI1.0 times the WHO guideline▲623
=345BrisbaneQueensland, Australia 61 US AQI1.0 times the WHO guideline▲298
=345Puerto MonttLos Lagos Region, Chile 61 US AQI1.0 times the WHO guideline▼89
=345León de los AldamaGuanajuato, Mexico 61 US AQI1.0 times the WHO guideline▲188
=354Hua HinPrachuap Khiri Khan, Thailand 61 US AQI1.0 times the WHO guideline▲21
=354Bueng KanBueng Kan, Thailand 61 US AQI1.0 times the WHO guideline▲1126
=354GongjuChungcheongnam-do, South Korea 61 US AQI1.0 times the WHO guideline▼170
=354MieOita, Japan 61 US AQI1.0 times the WHO guideline▲789
=358TsurusakiOita, Japan 61 US AQI1.0 times the WHO guideline▲344
=358Kashima-shiIbaraki, Japan 61 US AQI1.0 times the WHO guideline▲64
=358SagaeYamagata, Japan 61 US AQI1.0 times the WHO guideline▲65
=358Bijelo PoljeBijelo Polje, Montenegro 61 US AQI1.0 times the WHO guideline▲276
=358CorcoranCalifornia, United States 61 US AQI1.0 times the WHO guideline▼127
=363DhankutāKoshi, Nepal 61 US AQI0.9 times the WHO guideline▼41
=363OnomichiHiroshima, Japan 61 US AQI0.9 times the WHO guideline▲24
=363HamakitaShizuoka, Japan 61 US AQI0.9 times the WHO guideline▲1
=363Donghae CityGangwon-do, South Korea 61 US AQI0.9 times the WHO guideline▼191
=363Coffs HarbourNew South Wales, Australia 61 US AQI0.9 times the WHO guideline▲378
=368LamphunLamphun, Thailand 60 US AQI0.9 times the WHO guideline▲86
=368TatebayashiGunma, Japan 60 US AQI0.9 times the WHO guideline▼22
=368NobeokaMiyazaki, Japan 60 US AQI0.9 times the WHO guideline▲648
=371SantyokuGangwon-do, South Korea 60 US AQI0.9 times the WHO guideline▼229
=371GumiGyeongsangbuk-do, South Korea 60 US AQI0.9 times the WHO guideline▼112
=371GimcheonGyeongsangbuk-do, South Korea 60 US AQI0.9 times the WHO guideline▼67
=371SetoAichi, Japan 60 US AQI0.9 times the WHO guideline▼83
=375Novi PazarCentral Serbia, Serbia 60 US AQI0.9 times the WHO guideline▲52
=375SokchoGangwon-do, South Korea 60 US AQI0.9 times the WHO guideline▼128
=375NonsanChungcheongnam-do, South Korea 60 US AQI0.9 times the WHO guideline▼274
=375KumamotoKumamoto, Japan 60 US AQI0.9 times the WHO guideline▲521
=375Kanzakimachi-kanzakiSaga, Japan 60 US AQI0.9 times the WHO guideline▲55
=375HonjōSaitama, Japan 60 US AQI0.9 times the WHO guideline▲7
=381Nakhon PathomNakhon Pathom, Thailand 60 US AQI0.9 times the WHO guideline▲28
=381Rio ClaroSão Paulo, Brazil 60 US AQI0.9 times the WHO guideline▲52
=381PueblaPuebla, Mexico 60 US AQI0.9 times the WHO guideline▲297
=381MontgomeryAlabama, United States 60 US AQI0.9 times the WHO guideline▲852
=381Higashi-MatsuyamaSaitama, Japan 60 US AQI0.9 times the WHO guideline▼42
=386Gornji Milanovaclow-cost sensorsCentral Serbia, Serbia 60 US AQI0.9 times the WHO guideline
=386KumagayaSaitama, Japan 60 US AQI0.9 times the WHO guideline▼23
=386IsahayaNagasaki, Japan 60 US AQI0.9 times the WHO guideline▲209
=386MeccaCalifornia, United States 60 US AQI0.9 times the WHO guideline▲40
=390PhraePhrae, Thailand 59 US AQI0.9 times the WHO guideline▲92
=390DaejeonDaejeon, South Korea 59 US AQI0.9 times the WHO guideline▼182
=390TosuSaga, Japan 59 US AQI0.9 times the WHO guideline▲80
=390AsahikawaHokkaido, Japan 59 US AQI0.9 times the WHO guideline▲88
=390Accralow-cost sensorsGreater Accra, Ghana 59 US AQI0.9 times the WHO guideline▲178
=390Bochumlow-cost sensorsNorth Rhine-Westphalia, Germany 59 US AQI0.9 times the WHO guideline
=390OpoleOpole Voivodeship, Poland 59 US AQI0.9 times the WHO guideline▲743
=390KoprivnicaKoprivnica-Križevci, Croatia 59 US AQI0.9 times the WHO guideline▼36
=398ChungjuNorth Chungcheong, South Korea 59 US AQI0.9 times the WHO guideline▼165
=398FujinomiyaShizuoka, Japan 59 US AQI0.9 times the WHO guideline▲79
=398NagaiYamagata, Japan 59 US AQI0.9 times the WHO guideline▼64

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 and Turkey, which publish only on their own websites. We are building the reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. 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 24 hours to 13 Oct 2026, 04:00 UTC: each city's mean of its hourly values, cities measured in 18 or more of the 24 hours. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings. Ranked on low-cost sensors, with no reference monitor in the city: #1 Queenstown Estate, #3 Gaur, Madhesh, #4 Dubai, #6 Dhaka, #7 Multan, #8 Faisalabad, #9 Gujranwala and #10 Lahore. Some values from Sensor.Community, ODbL. Some readings from Uzhydromet (Uzbekistan's Hydrometeorological Service); Vietnam's government monitors; Department of Environment, Nepal; 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 2026-10-13 04:07 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: Uzhydromet (Uzbekistan's Hydrometeorological Service); Vietnam's government monitors; Department of Environment, Nepal; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).