All 2,645 cities by PM2.5, last 24 hours

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 are missing from this board, not clean.

Hide the 1,153 cities with only 1–2 sensors

These cities have only one or two low-cost sensors, and one cheap unit can read well off, so they take no rank. They sit at their place by value, marked –, and every ranked city keeps its number.

not rankedTubanBali, Indonesia 108 US AQI2.6 times the WHO guideline
not rankedMuang XayOudômxai, Laos 108 US AQI2.5 times the WHO guideline
48VictoriaCentral and Western, Hong Kong 107 US AQI2.5 times the WHO guideline▲178
=49Sham Shui PoSham Shui Po District, Hong Kong 107 US AQI2.5 times the WHO guideline▲105
=49Mong KokYau Tsim Mong District, Hong Kong 107 US AQI2.5 times the WHO guideline▲94
51KarachiSindh, Pakistan 107 US AQI2.5 times the WHO guideline▼18
not rankedAjmanAjman, United Arab Emirates 106 US AQI2.5 times the WHO guideline
52DunakesziPest County, Hungary 106 US AQI2.5 times the WHO guideline
=53Tsuen WanTsuen Wan, Hong Kong 105 US AQI2.5 times the WHO guideline▲120
=53LagosLagos, Nigeria 105 US AQI2.5 times the WHO guideline▲111
not rankedPszczynaSilesia, Poland 105 US AQI2.5 times the WHO guideline
55TaibaoTaiwan, Taiwan 105 US AQI2.5 times the WHO guideline▲111
56DubaiDubai, United Arab Emirates 103 US AQI2.4 times the WHO guideline▼51
57YuanlinTaiwan, Taiwan 103 US AQI2.4 times the WHO guideline▲11
not rankedDodaJammu and Kashmir, India 103 US AQI2.4 times the WHO guideline
not rankedKhulnaKhulna Division, Bangladesh 102 US AQI2.4 times the WHO guideline
not rankedShanghaiShanghai, China 102 US AQI2.4 times the WHO guideline
=58BukharaBukhara, Uzbekistan 102 US AQI2.4 times the WHO guideline▼33
=58Chiayi CityTaiwan, Taiwan 102 US AQI2.4 times the WHO guideline▲101
not rankedGwadarBalochistan, Pakistan 102 US AQI2.4 times the WHO guideline
not rankedHo Chi Minh CityHo Chi Minh City (HCMC), Vietnam 99 US AQI2.3 times the WHO guideline
60XinyingTaiwan, Taiwan 98 US AQI2.3 times the WHO guideline▲72
=61JanakpurMadhesh, Nepal 98 US AQI2.3 times the WHO guideline▼9
=61BurundayAlmaty Region, Kazakhstan 98 US AQI2.3 times the WHO guideline▲106
not rankedTambovTambov Oblast, Russia 98 US AQI2.3 times the WHO guideline
63DeukhurīLumbini Province, Nepal 97 US AQI2.3 times the WHO guideline▼5
not rankedUlan BatorUlaanbaatar, Mongolia 97 US AQI2.3 times the WHO guideline
64JinchengFukien, Taiwan 96 US AQI2.2 times the WHO guideline▲69
65YerevanYerevan, Armenia 96 US AQI2.2 times the WHO guideline▲69
66ChanghuaTaiwan, Taiwan 95 US AQI2.2 times the WHO guideline▲33
67TashkentTashkent, Uzbekistan 95 US AQI2.2 times the WHO guideline▼23
not rankedSan KamphaengChiang Mai, Thailand 95 US AQI2.2 times the WHO guideline
68ZiguinchorZiguinchor, Senegal 94 US AQI2.2 times the WHO guideline▲59
69YongkangTaiwan, Taiwan 94 US AQI2.2 times the WHO guideline▲102
not rankedRydułtowySilesia, Poland 94 US AQI2.1 times the WHO guideline
not rankedLábreaAmazonas, Brazil 94 US AQI2.1 times the WHO guideline
70Khlong LuangPathum Thani, Thailand 93 US AQI2.1 times the WHO guideline▲74
=71BanepāBagmati Province, Nepal 92 US AQI2.1 times the WHO guideline▼16
=71TainanTaiwan, Taiwan 92 US AQI2.1 times the WHO guideline▲71
73AngrenTashkent Region, Uzbekistan no daily values yet92 US AQI2.1 times the WHO guideline
74BuziTaiwan, Taiwan 92 US AQI2.1 times the WHO guideline
75Lat KrabangBangkok, Thailand 91 US AQI2.0 times the WHO guideline▲37
not rankedMalangoGuadalcanal Province, Solomon Islands 91 US AQI2.0 times the WHO guideline
76AbujaFCT, Nigeria 91 US AQI2.0 times the WHO guideline▼29
not rankedMuang SingLoungnamtha, Laos 91 US AQI2.0 times the WHO guideline
not rankedKuala BelaitBelait, Brunei 91 US AQI2.0 times the WHO guideline
not rankedHomburgSaarland, Germany 90 US AQI2.0 times the WHO guideline
77TaichungTaiwan, Taiwan 90 US AQI2.0 times the WHO guideline▲6
78Ciudad NezahualcoyotlMéxico, Mexico 90 US AQI2.0 times the WHO guideline▲155
79TokozaGauteng, South Africa 90 US AQI2.0 times the WHO guideline▲204
not rankedXam NuaHouaphan, Laos 90 US AQI2.0 times the WHO guideline
80Madhyapur ThimiBagmati Province, Nepal 89 US AQI2.0 times the WHO guideline▼24
not rankedZahléBekaa, Lebanon 89 US AQI2.0 times the WHO guideline
not rankedTyreSouth Governorate, Lebanon 89 US AQI2.0 times the WHO guideline
not rankedHang DongChiang Mai, Thailand 89 US AQI2.0 times the WHO guideline
not rankedKlingensteinBaden-Wurttemberg, Germany 87 US AQI1.9 times the WHO guideline
=81NanNan, Thailand 87 US AQI1.9 times the WHO guideline▲111
=81XizhiTaipei, Taiwan 87 US AQI1.9 times the WHO guideline▲59
not rankedFânzeresPorto, Portugal 87 US AQI1.9 times the WHO guideline
83Lak SiBangkok, Thailand 87 US AQI1.9 times the WHO guideline▲7
not rankedAlpharettaGeorgia, United States 87 US AQI1.9 times the WHO guideline
84Samut SakhonSamut Sakhon, Thailand 86 US AQI1.9 times the WHO guideline▲2
not rankedŠabacCentral Serbia, Serbia 86 US AQI1.9 times the WHO guideline
not rankedThe Palm JumeirahDubai, United Arab Emirates 86 US AQI1.9 times the WHO guideline
85NilópolisRio de Janeiro, Brazil 86 US AQI1.8 times the WHO guideline▲289
86SasolburgFree State, South Africa 85 US AQI1.8 times the WHO guideline▼36
87LuguTaiwan, Taiwan 85 US AQI1.8 times the WHO guideline▲43
not rankedThakhèkKhammouane Province, Laos 85 US AQI1.8 times the WHO guideline
88Banja LukaSrpska, Bosnia and Herzegovina 84 US AQI1.8 times the WHO guideline▲147
89JouniehMount Lebanon, Lebanon 84 US AQI1.8 times the WHO guideline▼10
not rankedClevelandTennessee, United States 84 US AQI1.8 times the WHO guideline
not rankedBirkirkaraBirkirkara, Malta 83 US AQI1.8 times the WHO guideline
=90PietermaritzburgKwaZulu-Natal, South Africa 83 US AQI1.8 times the WHO guideline▲128
=90PuliTaiwan, Taiwan 83 US AQI1.8 times the WHO guideline▲45
92SalorTashkent Region, Uzbekistan 83 US AQI1.7 times the WHO guideline▼50
not rankedBursaBursa Province, Turkey 83 US AQI1.7 times the WHO guideline
=93LeslieMpumalanga, South Africa 83 US AQI1.7 times the WHO guideline▼11
=93Phra PradaengSamut Prakan, Thailand 83 US AQI1.7 times the WHO guideline▲113
=95Mae SaiChiang Rai, Thailand 82 US AQI1.7 times the WHO guideline▲100
=95TaipeiTaiwan, Taiwan 82 US AQI1.7 times the WHO guideline▲87
=95IloiloWestern Visayas, Philippines 82 US AQI1.7 times the WHO guideline▼36
not rankedTha BoNong Khai, Thailand 82 US AQI1.7 times the WHO guideline
not rankedBan MaiSongkhla, Thailand 82 US AQI1.7 times the WHO guideline
98XizhouTaiwan, Taiwan 82 US AQI1.7 times the WHO guideline
not rankedPhotharamRatchaburi, Thailand 82 US AQI1.7 times the WHO guideline
not rankedVinnytsyaVinnytsia, Ukraine 82 US AQI1.7 times the WHO guideline
99LeskovacCentral Serbia, Serbia 82 US AQI1.7 times the WHO guideline▲1100
=100QarshiQashqadaryo, Uzbekistan 82 US AQI1.7 times the WHO guideline
=100ZhongliaoTaiwan, Taiwan 82 US AQI1.7 times the WHO guideline▼40
=100PortoPorto, Portugal 82 US AQI1.7 times the WHO guideline▲357
=100TaoyuanTaiwan, Taiwan 82 US AQI1.7 times the WHO guideline▲48
not rankedChambleeGeorgia, United States 82 US AQI1.7 times the WHO guideline
not rankedMaleKaafu Atoll, Maldives 81 US AQI1.7 times the WHO guideline
not rankedYangonYangon, Myanmar 81 US AQI1.7 times the WHO guideline
=104DushanbeDushanbe, Tajikistan 81 US AQI1.7 times the WHO guideline▲58
=104Otegen BatyraAlmaty Region, Kazakhstan 81 US AQI1.7 times the WHO guideline▲80
=104MiaoliTaiwan, Taiwan 81 US AQI1.7 times the WHO guideline▲48
not rankedSadaoSongkhla, Thailand 81 US AQI1.7 times the WHO guideline
107Ban ChangRayong, Thailand 81 US AQI1.7 times the WHO guideline▲31
not rankedMuang PhônsavanXiangkhoang, Laos 80 US AQI1.7 times the WHO guideline

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 1–2 sensors, not ranked 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 24 hours to 14 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 Gaur, Madhesh, #2 Kuala Lumpur, #4 Multan, #5 Faisalabad, #6 Gujranwala, #7 Lilongwe, #8 Lahore, #9 Dhaka and #10 Bahawalpur. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); 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 2026-10-14 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: Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Aurassure; RMCAB (Secretaría Distrital de Ambiente, Bogotá); Umhverfisstofnun (Environment Agency of Iceland), no reuse terms published (why we use them).