All 2,686 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.

=401PhraePhrae, Thailand 60 US AQI0.9 times the WHO guideline▲77
=401SantyokuGangwon-do, South Korea 60 US AQI0.9 times the WHO guideline▼256
=401NonsanChungcheongnam-do, South Korea 60 US AQI0.9 times the WHO guideline▼298
=401GimcheonGyeongsangbuk-do, South Korea 60 US AQI0.9 times the WHO guideline▼88
=401TosuSaga, Japan 60 US AQI0.9 times the WHO guideline▲58
=406KumagayaSaitama, Japan 60 US AQI0.9 times the WHO guideline
=406Bochumlow-cost sensorsNorth Rhine-Westphalia, Germany 60 US AQI0.9 times the WHO guideline
=406RadomskoŁódź Voivodeship, Poland 60 US AQI0.9 times the WHO guideline▲20
=406Rio ClaroSão Paulo, Brazil 60 US AQI0.9 times the WHO guideline▲13
=406MontgomeryAlabama, United States 60 US AQI0.9 times the WHO guideline▲779
=411SokchoGangwon-do, South Korea 59 US AQI0.9 times the WHO guideline▼152
=411ŌmuraNagasaki, Japan 59 US AQI0.9 times the WHO guideline▲50
=411FujiShizuoka, Japan 59 US AQI0.9 times the WHO guideline▲30
=411MeccaCalifornia, United States 59 US AQI0.9 times the WHO guideline▲22
=411UkihaFukuoka, Japan 59 US AQI0.9 times the WHO guideline▲176
=416TajimiGifu, Japan 59 US AQI0.9 times the WHO guideline▼47
=416AsahikawaHokkaido, Japan 59 US AQI0.9 times the WHO guideline▲35
=416FuefukiYamanashi, Japan 59 US AQI0.9 times the WHO guideline▼108
=419KrielMpumalanga, South Africa 59 US AQI0.9 times the WHO guideline▲1417
=419DaejeonDaejeon, South Korea 59 US AQI0.9 times the WHO guideline▼211
=419NagaiYamagata, Japan 59 US AQI0.9 times the WHO guideline▼94
=419KikugawaShizuoka, Japan 59 US AQI0.9 times the WHO guideline▲70
=423Chiang MaiChiang Mai, Thailand 59 US AQI0.9 times the WHO guideline▼57
=423SangjuGyeongsangbuk-do, South Korea 59 US AQI0.9 times the WHO guideline▼177
=423BeolgyoJeollanam-do, South Korea 59 US AQI0.9 times the WHO guideline▼122
=423KogaFukuoka, Japan 59 US AQI0.9 times the WHO guideline▲230
=423KakamigaharaGifu, Japan 59 US AQI0.9 times the WHO guideline▲198
=423IsahayaNagasaki, Japan 59 US AQI0.9 times the WHO guideline▲127
=423FujinomiyaShizuoka, Japan 59 US AQI0.9 times the WHO guideline▲62
=423Bielsko-BialaSilesia, Poland 59 US AQI0.9 times the WHO guideline▲422
=423MinokamoGifu, Japan 59 US AQI0.9 times the WHO guideline▲4
=432PhichitPhichit, Thailand 59 US AQI0.9 times the WHO guideline▲672
=432ChungjuNorth Chungcheong, South Korea 59 US AQI0.9 times the WHO guideline▼197
=432TogitsuNagasaki, Japan 59 US AQI0.9 times the WHO guideline▼37
=432HanyūSaitama, Japan 59 US AQI0.9 times the WHO guideline▼81
=432BeppuOita, Japan 59 US AQI0.9 times the WHO guideline▼67
=432Accralow-cost sensorsGreater Accra, Ghana 59 US AQI0.9 times the WHO guideline▲148
=432SarajevoFederation of B&H, Bosnia and Herzegovina 59 US AQI0.9 times the WHO guideline▲794
=432WakasugiFukuoka, Japan 59 US AQI0.9 times the WHO guideline▲116
=432YameFukuoka, Japan 59 US AQI0.9 times the WHO guideline▼41
=432ItoshimaFukuoka, Japan 59 US AQI0.9 times the WHO guideline▲184
=442YoriiSaitama, Japan 58 US AQI0.9 times the WHO guideline▲33
=442KiryūGunma, Japan 58 US AQI0.9 times the WHO guideline▲89
=444Hualien CityTaiwan, Taiwan 58 US AQI0.9 times the WHO guideline▲325
=444San Francisco De BorjaLima region, Peru 58 US AQI0.9 times the WHO guideline
=446SuncheonJeollanam-do, South Korea 58 US AQI0.9 times the WHO guideline▼113
=446UedaNagano, Japan 58 US AQI0.9 times the WHO guideline▲173
=446HirosakiAomori, Japan 58 US AQI0.9 times the WHO guideline▲336
=446GuaratinguetáSão Paulo, Brazil 58 US AQI0.9 times the WHO guideline▲31
=446Tannum SandsQueensland, Australia 58 US AQI0.9 times the WHO guideline▲321
=446Minami-AlpsYamanashi, Japan 58 US AQI0.9 times the WHO guideline▲125
=446MatsusakaMie, Japan 58 US AQI0.9 times the WHO guideline▼178
=446MunakataFukuoka, Japan 58 US AQI0.9 times the WHO guideline▲279
=454MinamirinkanKanagawa, Japan 58 US AQI0.9 times the WHO guideline
=454MatsumotoNagano, Japan 58 US AQI0.9 times the WHO guideline
=454IizukaFukuoka, Japan 58 US AQI0.9 times the WHO guideline▲78
=454Portolow-cost sensorsPorto, Portugal 58 US AQI0.9 times the WHO guideline▼67
=454CrescentinoPiedmont, Italy 58 US AQI0.9 times the WHO guideline▲217
=454Zagreblow-cost sensorsZagreb, Croatia 58 US AQI0.9 times the WHO guideline▲169
=454PrijedorSrpska, Bosnia and Herzegovina 58 US AQI0.9 times the WHO guideline▼189
=454ShūnanYamaguchi, Japan 58 US AQI0.9 times the WHO guideline▲102
=462SuwaNagano, Japan 58 US AQI0.8 times the WHO guideline▲311
=462KukichūōSaitama, Japan 58 US AQI0.8 times the WHO guideline▼14
=462HwawŏnDaegu, South Korea 58 US AQI0.8 times the WHO guideline▼92
=462MiddletownOhio, United States 58 US AQI0.8 times the WHO guideline▲727
=466CenturionGauteng, South Africa 58 US AQI0.8 times the WHO guideline▲275
=466ShimadaShizuoka, Japan 58 US AQI0.8 times the WHO guideline▲112
=466HijiOita, Japan 58 US AQI0.8 times the WHO guideline▼152
=466HanamakiIwate, Japan 58 US AQI0.8 times the WHO guideline▲141
=466KitamiHokkaido, Japan 58 US AQI0.8 times the WHO guideline▲252
=466ChitoseHokkaido, Japan 58 US AQI0.8 times the WHO guideline▲375
=466Abidjanlow-cost sensorsAbidjan Autonomous District, Ivory Coast 58 US AQI0.8 times the WHO guideline▲402
=466HuascoAtacama, Chile 58 US AQI0.8 times the WHO guideline▼168
=466Granite CityIllinois, United States 58 US AQI0.8 times the WHO guideline▼13
=466LimaOhio, United States 58 US AQI0.8 times the WHO guideline▲244
=476Sidonlow-cost sensorsSouth Governorate, Lebanon 57 US AQI0.8 times the WHO guideline▼375
=476GangneungGangwon-do, South Korea 57 US AQI0.8 times the WHO guideline▼193
=476NakatsuOita, Japan 57 US AQI0.8 times the WHO guideline▼96
=476NagoyaAichi, Japan 57 US AQI0.8 times the WHO guideline▼243
=476KōnosuSaitama, Japan 57 US AQI0.8 times the WHO guideline▼27
=476InuyamaAichi, Japan 57 US AQI0.8 times the WHO guideline▼133
=476TomakomaiHokkaido, Japan 57 US AQI0.8 times the WHO guideline▲538
=476RužomberokŽilina Region, Slovakia 57 US AQI0.8 times the WHO guideline▲646
=476HavířovMoravian-Silesian Region, Czechia 57 US AQI0.8 times the WHO guideline▲748
=476NisshinAichi, Japan 57 US AQI0.8 times the WHO guideline▼291
=476HyūgaMiyazaki, Japan 57 US AQI0.8 times the WHO guideline▲525
=487TagawaFukuoka, Japan 57 US AQI0.8 times the WHO guideline▲155
=487ShimonosekiYamaguchi, Japan 57 US AQI0.8 times the WHO guideline
=487AsakaSaitama, Japan 57 US AQI0.8 times the WHO guideline▲28
=487GladstoneQueensland, Australia 57 US AQI0.8 times the WHO guideline▲261
=487San Juan del RíoQuerétaro, Mexico 57 US AQI0.8 times the WHO guideline▼55
=487JacksonMississippi, United States 57 US AQI0.8 times the WHO guideline▲701
=487MankatoMinnesota, United States 57 US AQI0.8 times the WHO guideline▼159
=487VinovoPiedmont, Italy 57 US AQI0.8 times the WHO guideline▲434
=495JasłoSubcarpathia, Poland 57 US AQI0.8 times the WHO guideline▲564
=495IwadeWakayama, Japan 57 US AQI0.8 times the WHO guideline▲7
=495FujiedaShizuoka, Japan 57 US AQI0.8 times the WHO guideline▼33
=495SaijōEhime, Japan 57 US AQI0.8 times the WHO guideline▼157
=495IshinomakiMiyagi, Japan 57 US AQI0.8 times the WHO guideline▼192
=495ToowoombaQueensland, Australia 57 US AQI0.8 times the WHO guideline▲448

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, 05:00 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 Lyubertsy, #4 Gaur, Madhesh, #5 Dubai, #7 Dhaka, #8 Multan, #9 Faisalabad and #10 Gujranwala. 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.

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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 05:07 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).