All 3,291 cities by PM2.5, last 30 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.

=399Poggio Ruscolast full day 11 OctLombardy, Italy 62 US AQI
=399Novi SadVojvodina, Serbia 62 US AQI▼45
=399Bijelo PoljeBijelo Polje, Montenegro 62 US AQI▼67
=399Alto Hospiciolast full day 11 OctTarapacá, Chile 62 US AQI▼42
=405San Tung Chung HangIslands, Hong Kong 62 US AQI▼1
=405YeonggwangJeollanam-do, South Korea 62 US AQI▼43
=405GwangmyeongGyeonggi-do, South Korea 62 US AQI▼47
=408KikindaVojvodina, Serbia 61 US AQI▼48
=408Mong KokYau Tsim Mong District, Hong Kong 61 US AQI▼21
=408FanlingNorth District, Hong Kong 61 US AQI▼3
=408AccraGreater Accra, Ghana 61 US AQI▼40
=408FreetownWestern Area, Sierra Leone 61 US AQI▼31
=413BārmerRajasthan, India 61 US AQI▼15
=413XinyingTaiwan, Taiwan 61 US AQI▼22
=413NantouTaiwan, Taiwan 61 US AQI▼41
=413LuguTaiwan, Taiwan 61 US AQI▼27
=413OkcheonNorth Chungcheong, South Korea 61 US AQI▼40
=413Ganghwa-gunIncheon, South Korea 61 US AQI▼50
=413KłodzkoLower Silesia, Poland 61 US AQI▲171
=413PueblaPuebla, Mexico 61 US AQI▼48
=413TlaquepaqueJalisco, Mexico 61 US AQI▼54
=422DurgChhattisgarh, India 61 US AQI▲44
=422Ban Khlong PrawetBangkok, Thailand 61 US AQI▼39
=422FengshanTakao, Taiwan 61 US AQI▼48
=422Chiayi CityTaiwan, Taiwan 61 US AQI▼30
=426YŏnmuChungcheongnam-do, South Korea 61 US AQI▼42
=426CrescentinoPiedmont, Italy 61 US AQI▼62
=426San Pedro SulaCortés Department, Honduras 61 US AQI▼47
=426HanfordCalifornia, United States 61 US AQI▼46
=430MuanJeollanam-do, South Korea 61 US AQI▼55
=430IncheonIncheon, South Korea 61 US AQI▼54
=430ChanghuaTaiwan, Taiwan 61 US AQI▼22
=430NovaraPiedmont, Italy 61 US AQI
=430BraPiedmont, Italy 61 US AQI▼30
=435DebrecenHajdú-Bihar, Hungary 61 US AQI▲34
=435NišCentral Serbia, Serbia 61 US AQI▼54
=435Icheon-siGyeonggi-do, South Korea 61 US AQI▼47
=435CheorwonGangwon-do, South Korea 61 US AQI▼42
=439SkopjeGrad Skopje, North Macedonia 60 US AQI▼54
=439PhalaborwaLimpopo, South Africa 60 US AQI▼57
=439Bang PakongChachoengsao, Thailand 60 US AQI▼36
=439WrocławLower Silesia, Poland 60 US AQI▲95
=439Bueng KumBangkok, Thailand 60 US AQI▼37
=444PruszkówMazovia, Poland 60 US AQI▲51
=444Tai PoTai Po, Hong Kong 60 US AQI▼10
=444NamsaJeollabuk-do, South Korea 60 US AQI▼45
=444WłocławekKujawsko-Pomorskie, Poland 60 US AQI▲36
=444TurinPiedmont, Italy 60 US AQI▼49
=444CorcoranCalifornia, United States 60 US AQI▼43
=450RayongRayong, Thailand 60 US AQI▲4
=450Nakhon PathomNakhon Pathom, Thailand 60 US AQI▼41
=450XizhiTaipei, Taiwan 60 US AQI▼17
=450ZhongliaoTaiwan, Taiwan 60 US AQI▼22
=450Sham Shui PoSham Shui Po District, Hong Kong 60 US AQI▼15
=450Kwai ChungKwai Tsing District, Hong Kong 60 US AQI▼6
=450Jurupa ValleyCalifornia, United States 60 US AQI▼61
=457KaohsiungTakao, Taiwan 60 US AQI▼45
=457Guri-siGyeonggi-do, South Korea 60 US AQI▼39
=457GumiGyeongsangbuk-do, South Korea 60 US AQI▼51
=457Goyang-siGyeonggi-do, South Korea 60 US AQI▼42
=457Ansan-siGyeonggi-do, South Korea 60 US AQI▼50
=462Sighetu Marmaţieilast full day 10 OctMaramureş, Romania 60 US AQI▼5
=462ZamośćLublin, Poland 60 US AQI▲32
=462Ban Talat BuengChon Buri, Thailand 60 US AQI▼51
=462YongkangTaiwan, Taiwan 60 US AQI▼30
=462Jastrzębie ZdrójSilesia, Poland 60 US AQI▲134
=462SoachaCundinamarca, Colombia 60 US AQI
=468PinetownKwaZulu-Natal, South Africa 59 US AQI▼71
=468TratTrat, Thailand 59 US AQI▼58
=468OsanGyeonggi-do, South Korea 59 US AQI▼54
=468ZiguinchorZiguinchor, Senegal 59 US AQI▼21
=468KoprivnicaKoprivnica-Križevci, Croatia 59 US AQI
=473Craiovalast full day 10 OctDolj, Romania 59 US AQI▼9
=473StarachowiceŚwiętokrzyskie, Poland 59 US AQI▲31
=473XizhouTaiwan, Taiwan 59 US AQI▼46
=473Sau Mau PingKwun Tong District, Hong Kong 59 US AQI▼6
=473EisenGyeongsangbuk-do, South Korea 59 US AQI▼37
=473KoesanNorth Chungcheong, South Korea 59 US AQI▼50
=473ToledoCastille-La Mancha, Spain 59 US AQI
=473FunzaCundinamarca, Colombia 59 US AQI
=473ClovisCalifornia, United States 59 US AQI▼53
=482Gostivarlast full day 10 OctGostivar, North Macedonia 59 US AQI▼66
=482ShakaskraalKwaZulu-Natal, South Africa 59 US AQI▼86
=482KohimaNagaland, India 59 US AQI▼29
=482ChaozhouTaiwan, Taiwan 59 US AQI▼60
=482BoryeongChungcheongnam-do, South Korea 59 US AQI▼69
=482MasanGwangju, South Korea 59 US AQI▼65
=482PortoPorto, Portugal 59 US AQI▼34
=482ŻywiecSilesia, Poland 59 US AQI▲73
=482AsunciónAsuncion, Paraguay 59 US AQI
=482Yongsan-dongSeoul, South Korea 59 US AQI▼57
=492NiskoSubcarpathia, Poland 59 US AQI▲14
=492KrielMpumalanga, South Africa 59 US AQI▼50
=492Samut PrakanSamut Prakan, Thailand 59 US AQI▼49
=492NeiliTaiwan, Taiwan 59 US AQI▼15
=492SeoulSeoul, South Korea 59 US AQI▼54
=492Cheongju-siNorth Chungcheong, South Korea 59 US AQI▼52
=492ThièsThies, Senegal 59 US AQI▲186
=492KatowiceSilesia, Poland 59 US AQI▲64
500JouniehMount Lebanon, Lebanon 59 US AQI▼49

What stands behind each figure: Checked at 2+ sites One reference monitor Low-cost sensors 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 30 days to 14 Oct 2026, 06:00 UTC: each city's mean of its daily means, cities measured on 21 or more of the 30 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/rankings?w=30d. Ranked on low-cost sensors, with no reference monitor in the city: #1 Kasur, #2 Gujranwala, #3 Kuala Lumpur, #5 Lahore, #6 Faisalabad, #9 Peshawar and #10 Dhaka. Some values from Sensor.Community, ODbL. Some readings from Vietnam's government monitors; 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 low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Vietnam's government monitors; 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).