All 2,894 cities by PM2.5, last 7 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.

Hide the 297 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.

=125GwangmyeongGyeonggi-do, South Korea 73 US AQI▲18
=125VillarricaAraucania, Chile 73 US AQI▼35
128LinaresMaule Region, Chile 73 US AQI▼9
=129BeirutBeirut, Lebanon 72 US AQI▲8
=129Roi EtRoi Et, Thailand 72 US AQI▲18
=129AsanChungcheongnam-do, South Korea 72 US AQI▲2
132HongseongChungcheongnam-do, South Korea 72 US AQI▼12
=133Bang KapiBangkok, Thailand 72 US AQI▼6
=133MokpoJeollanam-do, South Korea 72 US AQI▼27
=135YerevanYerevan, Armenia 72 US AQI▲24
=135OsanGyeonggi-do, South Korea 72 US AQI▲20
=137BangkokBangkok, Thailand 72 US AQI▼3
=137Santiaguito TlalcilalcalliMéxico, Mexico 72 US AQI▼23
=139MukdahanMukdahan, Thailand 71 US AQI▲9
=139YeonggwangJeollanam-do, South Korea 71 US AQI▲25
=139TuxtlaChiapas, Mexico 71 US AQI▼36
=139CauquenesMaule Region, Chile 71 US AQI▼29
not rankedNăvodariConstanța County, Romania 71 US AQI
=143NanNan, Thailand 71 US AQI▲26
=143San Tung Chung HangIslands, Hong Kong 71 US AQI▲59
=143ZiguinchorZiguinchor, Senegal 71 US AQI▲77
=143AricaArica y Parinacota Region, Chile 71 US AQI▼28
=147eMbalenhleMpumalanga, South Africa 71 US AQI▼18
=147ErlunTaiwan, Taiwan 71 US AQI▲86
=147YŏnmuChungcheongnam-do, South Korea 71 US AQI▼2
=147UžiceCentral Serbia, Serbia 71 US AQI▼58
not rankedPalmerstonNorthern Territory, Australia 71 US AQI
151Los ÁngelesBiobio, Chile 71 US AQI▼9
not rankedBan Lam Luk KaPathum Thani, Thailand 71 US AQI
=152FanlingNorth District, Hong Kong 71 US AQI▲52
=152Ganghwa-gunIncheon, South Korea 71 US AQI▲4
=152Naucalpan de JuárezMéxico, Mexico 71 US AQI▲33
=152QuinteroValparaiso, Chile 71 US AQI▼31
=156Bang NaBangkok, Thailand 71 US AQI▼39
=156YeojuGyeonggi-do, South Korea 71 US AQI▲40
=156BoryeongChungcheongnam-do, South Korea 71 US AQI▼7
=156RancaguaO'Higgins Region, Chile 71 US AQI▼16
=160SuwonGyeonggi-do, South Korea 70 US AQI▲10
=160Hacienda Santa FeJalisco, Mexico 70 US AQI▼38
not rankedPretoriaGauteng, South Africa 70 US AQI
=162Mong KokYau Tsim Mong District, Hong Kong 70 US AQI▲41
=162Goyang-siGyeonggi-do, South Korea 70 US AQI▲26
=162Cheongju-siNorth Chungcheong, South Korea 70 US AQI▲22
=162CheonanChungcheongnam-do, South Korea 70 US AQI▼5
=162Monzalast full day 11 OctLombardy, Italy 70 US AQI
=162Saphan SungBangkok, Thailand 70 US AQI▼4
not rankedeSikhaleniKwaZulu-Natal, South Africa 70 US AQI
168HarareHarare, Zimbabwe 70 US AQI▼8
=169ObrenovacCentral Serbia, Serbia 70 US AQI▼72
=169EvatonGauteng, South Africa 70 US AQI▼30
=169NamsaJeollabuk-do, South Korea 70 US AQI▲3
=169Yongsan-dongSeoul, South Korea 70 US AQI▲24
=169SejongSejong-si, South Korea 70 US AQI▼6
=174KumanovoKumanovo, North Macedonia 70 US AQI▼91
=174Maha SarakhamMaha Sarakham, Thailand 70 US AQI▲25
=176Mae SaiChiang Rai, Thailand 69 US AQI▲3
=176Samut PrakanSamut Prakan, Thailand 69 US AQI▼10
=176ErlinTaiwan, Taiwan 69 US AQI▲73
=176TalcahuanoBiobio, Chile 69 US AQI▼14
=180Sham Shui PoSham Shui Po District, Hong Kong 69 US AQI▲63
=180SeoulSeoul, South Korea 69 US AQI▲12
=180Anyang-siGyeonggi-do, South Korea 69 US AQI▲17
not rankedBallitovilleKwaZulu-Natal, South Africa 69 US AQI
=183NišCentral Serbia, Serbia 69 US AQI▼59
=183TzaneenLimpopo, South Africa 69 US AQI▼58
=183TokozaGauteng, South Africa 69 US AQI▼29
=183Bang PakongChachoengsao, Thailand 69 US AQI▲56
=183ZhushanTaiwan, Taiwan 69 US AQI▲59
=183Guri-siGyeonggi-do, South Korea 69 US AQI▲27
=183TemucoAraucania, Chile 69 US AQI▼22
=190SkopjeGrad Skopje, North Macedonia 69 US AQI▼89
=190PietermaritzburgKwaZulu-Natal, South Africa 69 US AQI▼19
=190Tai PoTai Po, Hong Kong 69 US AQI▲63
=190OkcheonNorth Chungcheong, South Korea 69 US AQI▼9
=190TalcaMaule Region, Chile 69 US AQI▼38
not rankedNetanyaCentral District, Israel 69 US AQI
=195Buri RamBuriram, Thailand 69 US AQI▲13
=195MuanJeollanam-do, South Korea 69 US AQI▼45
=195Poggio Ruscolast full day 11 OctLombardy, Italy 69 US AQI
=198SmederevoCentral Serbia, Serbia 69 US AQI▼107
=198DouliuTaiwan, Taiwan 69 US AQI▲67
=198TainanTaiwan, Taiwan 69 US AQI▲42
=198SaltilloCoahuila, Mexico 69 US AQI▼45
=202KalasinKalasin, Thailand 68 US AQI▲30
=202Kwai ChungKwai Tsing District, Hong Kong 68 US AQI▲65
=202Bucheon-siGyeonggi-do, South Korea 68 US AQI▲7
=202Chinch'ŏnNorth Chungcheong, South Korea 68 US AQI▲15
=206Si Maha PhotPrachin Buri, Thailand 68 US AQI▼16
=206YuanlinTaiwan, Taiwan 68 US AQI▲81
=206SeosanChungcheongnam-do, South Korea 68 US AQI▼26
=206Icheon-siGyeonggi-do, South Korea 68 US AQI▲10
=210Ban Khlong PrawetBangkok, Thailand 68 US AQI▼23
=210BeigangTaiwan, Taiwan 68 US AQI▲69
=210JinchengFukien, Taiwan 68 US AQI▲24
=210HualquiBiobio, Chile 68 US AQI▼28
=210CuricóMaule Region, Chile 68 US AQI▼42
=210TijuanaBaja California, Mexico 68 US AQI▼69
not rankedKotsyubynskeKyiv Oblast, Ukraine 68 US AQI
not rankedDniproDnipropetrovsk, Ukraine 68 US AQI
not rankedTexcoco de MoraMéxico, Mexico 68 US AQI

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 7 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 5 or more of the 7 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=7d. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kuala Lumpur, #3 Dhaka, #4 Faisalabad, #5 Kasur, #6 Gujranwala, #7 Lahore, #8 Peshawar, #9 Multan and #10 Jakarta. Some readings from Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); 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 readings: Vietnam's government monitors; Uzhydromet (Uzbekistan's Hydrometeorological Service); 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).