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 rankedBrookhavenGeorgia, United States 80 US AQI1.7 times the WHO guideline
=108ModimolleLimpopo, South Africa 80 US AQI1.6 times the WHO guideline▲8
=108NeiliTaiwan, Taiwan 80 US AQI1.6 times the WHO guideline▲28
=110KeelungTaiwan, Taiwan 80 US AQI1.6 times the WHO guideline▲94
=110Khlong Sam WaBangkok, Thailand 80 US AQI1.6 times the WHO guideline▲48
112ShenzhenTaiwan, Taiwan 80 US AQI1.6 times the WHO guideline▲27
=113Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand 79 US AQI1.6 times the WHO guideline
=113Czechowice-DziedziceSilesia, Poland 79 US AQI1.6 times the WHO guideline▲619
=113SoachaCundinamarca, Colombia 79 US AQI1.6 times the WHO guideline
=116Nong KhaemBangkok, Thailand 79 US AQI1.6 times the WHO guideline▲21
=116Chinch'ŏnNorth Chungcheong, South Korea 79 US AQI1.6 times the WHO guideline▲81
=118TychySilesia, Poland 79 US AQI1.6 times the WHO guideline
=118New Taipei CityTaipei, Taiwan 79 US AQI1.6 times the WHO guideline▲59
120IbadanOyo State, Nigeria 79 US AQI1.6 times the WHO guideline▼74
not rankedGuadalupeNuevo León, Mexico 79 US AQI1.6 times the WHO guideline
not rankedSugar HillGeorgia, United States 79 US AQI1.6 times the WHO guideline
121ShulinTaipei, Taiwan 78 US AQI1.6 times the WHO guideline▲80
not rankedTripoliNorth Lebanon, Lebanon 78 US AQI1.6 times the WHO guideline
not rankedByblosMount Lebanon, Lebanon 78 US AQI1.6 times the WHO guideline
not rankedPort of SpainPort of Spain, Trinidad and Tobago 78 US AQI1.6 times the WHO guideline
=122KathmanduBagmati Province, Nepal 77 US AQI1.5 times the WHO guideline▲23
=122Ban Samae DamBangkok, Thailand 77 US AQI1.5 times the WHO guideline▼1
not rankedDniproDnipropetrovsk, Ukraine 77 US AQI1.5 times the WHO guideline
not rankedGarwolinMazovia, Poland 77 US AQI1.5 times the WHO guideline
=124Si Maha PhotPrachin Buri, Thailand 77 US AQI1.5 times the WHO guideline▲86
=124Chai NatChai Nat, Thailand 77 US AQI1.5 times the WHO guideline▲27
=124TangjinChungcheongnam-do, South Korea 77 US AQI1.5 times the WHO guideline▼58
=124NamsaJeollabuk-do, South Korea 77 US AQI1.5 times the WHO guideline
=124Naucalpan de JuárezMéxico, Mexico 77 US AQI1.5 times the WHO guideline▲32
=124Khan Na YaoBangkok, Thailand 77 US AQI1.5 times the WHO guideline▲62
=130Bang KapiBangkok, Thailand 77 US AQI1.5 times the WHO guideline▲81
=130GumiGyeongsangbuk-do, South Korea 77 US AQI1.5 times the WHO guideline▲256
=132BangkokBangkok, Thailand 77 US AQI1.5 times the WHO guideline▲68
=132SeonghwanChungcheongnam-do, South Korea 77 US AQI1.5 times the WHO guideline▼9
=132KimjeJeollabuk-do, South Korea 77 US AQI1.5 times the WHO guideline▲17
not rankedVranjeCentral Serbia, Serbia 77 US AQI1.5 times the WHO guideline
not rankedZikhron Ya‘aqovHaifa, Israel 77 US AQI1.5 times the WHO guideline
not rankedKharkivKharkiv, Ukraine 77 US AQI1.5 times the WHO guideline
not rankedWejherowoPomerania, Poland 77 US AQI1.5 times the WHO guideline
=135EmalahleniMpumalanga, South Africa 76 US AQI1.5 times the WHO guideline▼63
=135Saphan SungBangkok, Thailand 76 US AQI1.5 times the WHO guideline▲73
not rankedLubangoHuíla, Angola 76 US AQI1.5 times the WHO guideline
=137QibrayTashkent Region, Uzbekistan 76 US AQI1.5 times the WHO guideline▼97
=137HsinchuTaiwan, Taiwan 76 US AQI1.5 times the WHO guideline▲104
139BeirutBeirut, Lebanon 76 US AQI1.5 times the WHO guideline▲155
not rankedTuckerGeorgia, United States 76 US AQI1.5 times the WHO guideline
=140Hua HinPrachuap Khiri Khan, Thailand 76 US AQI1.5 times the WHO guideline▲224
=140ŻywiecSilesia, Poland 76 US AQI1.5 times the WHO guideline▲103
=142Mueang NonthaburiNonthaburi, Thailand 75 US AQI1.5 times the WHO guideline▲88
=142MagongTaiwan, Taiwan 75 US AQI1.5 times the WHO guideline▲110
=142PljevljaPljevlja, Montenegro 75 US AQI1.5 times the WHO guideline▲207
not rankedVillanuevaCortés Department, Honduras 75 US AQI1.5 times the WHO guideline
145RadomskoŁódź Voivodeship, Poland 75 US AQI1.5 times the WHO guideline▲263
not rankedVinicaVinica, North Macedonia 75 US AQI1.5 times the WHO guideline
=146IstanbulIstanbul, Turkey 75 US AQI1.5 times the WHO guideline▼95
=146SukhothaiSukhothai, Thailand 75 US AQI1.5 times the WHO guideline▲173
not rankedKamp-LintfortNorth Rhine-Westphalia, Germany 75 US AQI1.5 times the WHO guideline
148Nakhon RatchasimaNakhon Ratchasima, Thailand 75 US AQI1.5 times the WHO guideline▼64
=149BharatpurBagmati Province, Nepal 75 US AQI1.5 times the WHO guideline▲32
=149KaohsiungTakao, Taiwan 75 US AQI1.5 times the WHO guideline▲109
=149PubalGyeonggi-do, South Korea 75 US AQI1.5 times the WHO guideline
=149HennigsdorfBrandenburg, Germany 75 US AQI1.5 times the WHO guideline
not rankedBignonaZiguinchor, Senegal 75 US AQI1.5 times the WHO guideline
not rankedVladimirVladimir Oblast, Russia 74 US AQI1.4 times the WHO guideline
153Cheongju-siNorth Chungcheong, South Korea 74 US AQI1.4 times the WHO guideline▲67
not rankedMilanówekMazovia, Poland 74 US AQI1.4 times the WHO guideline
not rankedTsukubaIbaraki, Japan 74 US AQI1.4 times the WHO guideline
not rankedGlindeSchleswig-Holstein, Germany 74 US AQI1.4 times the WHO guideline
not rankedOak HarborWashington, United States 74 US AQI1.4 times the WHO guideline
154KoesanNorth Chungcheong, South Korea 74 US AQI1.4 times the WHO guideline▲200
=155StarachowiceŚwiętokrzyskie, Poland 74 US AQI1.4 times the WHO guideline▲1123
=155YilanTaiwan, Taiwan 74 US AQI1.4 times the WHO guideline▲60
not rankedDurleştiChișinău Municipality, Moldova 74 US AQI1.4 times the WHO guideline
not rankedCajicáCundinamarca, Colombia 74 US AQI1.4 times the WHO guideline
not rankedPeachtree CityGeorgia, United States 74 US AQI1.4 times the WHO guideline
not rankedAuroraOntario, Canada 74 US AQI1.4 times the WHO guideline
157Khon KaenKhon Kaen, Thailand 74 US AQI1.4 times the WHO guideline▼108
not rankedVsetínZlín, Czechia 74 US AQI1.4 times the WHO guideline
158Samut PrakanSamut Prakan, Thailand 73 US AQI1.4 times the WHO guideline▲169
not rankedDaetBicol Region, Philippines 73 US AQI1.4 times the WHO guideline
159eManzimtotiKwaZulu-Natal, South Africa 73 US AQI1.4 times the WHO guideline▼153
not rankedBen GuerirMarrakesh-Safi, Morocco 73 US AQI1.4 times the WHO guideline
160TshiterekeLimpopo, South Africa 73 US AQI1.4 times the WHO guideline▲172
not rankedWaUpper West, Ghana 73 US AQI1.4 times the WHO guideline
161Bueng KumBangkok, Thailand 73 US AQI1.4 times the WHO guideline▲95
not rankedIvanovoIvanovo Oblast, Russia 73 US AQI1.4 times the WHO guideline
=162AndijonAndijan Region, Uzbekistan no daily values yet72 US AQI1.4 times the WHO guideline
=162FengshanTakao, Taiwan 72 US AQI1.4 times the WHO guideline▲61
=162Bielsko-BialaSilesia, Poland 72 US AQI1.4 times the WHO guideline▲268
=162TuzlaFederation of B&H, Bosnia and Herzegovina 72 US AQI1.4 times the WHO guideline
not rankedWardenburgLower Saxony, Germany 72 US AQI1.4 times the WHO guideline
not rankedKnurówSilesia, Poland 72 US AQI1.4 times the WHO guideline
=166Ban Khlong PrawetBangkok, Thailand 72 US AQI1.4 times the WHO guideline▲84
=166Mexico CityMexico City, Mexico 72 US AQI1.4 times the WHO guideline▲125
not rankedAcreNorthern District, Israel 72 US AQI1.4 times the WHO guideline
not rankedFriedrichsdorfHesse, Germany 72 US AQI1.4 times the WHO guideline
168Chiang RaiChiang Rai, Thailand 72 US AQI1.4 times the WHO guideline
not rankedBandipuraJammu and Kashmir, India 72 US AQI1.4 times the WHO guideline
not rankedNang RongBuriram, Thailand 72 US AQI1.4 times the WHO guideline
not rankedBang Pa-inPhra Nakhon Si Ayutthaya, Thailand 72 US AQI1.4 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).