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.

201BarbilOdisha, India 80 US AQI
=202SasolburgFree State, South Africa 80 US AQI▼22
=202JodhpurRajasthan, India 80 US AQI▼18
204TuxtlaChiapas, Mexico 79 US AQI▼30
=205PhuntsholingChukha, Bhutan 79 US AQI▲23
=205RancaguaO'Higgins Region, Chile 79 US AQI▼24
=207RaipurChhattisgarh, India 79 US AQI▼7
=207ChillánÑuble, Chile 79 US AQI▼25
209ChūruRajasthan, India 79 US AQI▼22
=210SirsaHaryana, India 78 US AQI▼17
=210ChangchunJilin, China 78 US AQI▼19
=212PatiālaPunjab, India 78 US AQI▼29
=212BilāspurChhattisgarh, India 78 US AQI▼9
214KatiharBihar, India 78 US AQI▼12
=215HubballiKarnataka, India 78 US AQI
=215San CarlosÑuble, Chile 78 US AQI▼29
217RatlāmMadhya Pradesh, India 77 US AQI▼18
=218DurbanKwaZulu-Natal, South Africa 77 US AQI▼33
=218TalojeMaharashtra, India 77 US AQI
=218RājsamandRajasthan, India 77 US AQI▼30
=218VientianeVientiane Prefecture, Laos 77 US AQI▼22
222Chik Ballāpurlast full day 11 OctKarnataka, India 77 US AQI▼11
223ChandigarhChandigarh, India 77 US AQI▼33
224RourkelaOdisha, India 77 US AQI▼23
225Hacienda Santa FeJalisco, Mexico 77 US AQI▼33
226LinaresMaule Region, Chile 76 US AQI▼37
=227IstanbulIstanbul, Turkey 76 US AQI▼30
=227NāgaurRajasthan, India 76 US AQI▼20
=227BengaluruKarnataka, India 76 US AQI▼7
230LaturMaharashtra, India 76 US AQI
=231BhubaneswarOdisha, India 76 US AQI▼22
=231TemucoAraucania, Chile 76 US AQI▼33
233AkolaMaharashtra, India 75 US AQI▼17
=234SilcharAssam, India 75 US AQI▼28
=234Wan ChaiWan Chai, Hong Kong 75 US AQI▼22
236AmravatiMaharashtra, India 75 US AQI▼7
237CuricóMaule Region, Chile 75 US AQI▼32
238KarauliRajasthan, India 74 US AQI▼30
239HualquiBiobio, Chile 74 US AQI▼35
240JabalpurMadhya Pradesh, India 74 US AQI▲9
=241JalorRajasthan, India 73 US AQI▼22
=241TalcaMaule Region, Chile 73 US AQI▼28
=243BārānRajasthan, India 73 US AQI
=243CoronelBiobio, Chile 73 US AQI▼22
=245RengoO'Higgins Region, Chile 73 US AQI▼30
=245Los ÁngelesBiobio, Chile 73 US AQI▼27
=247AshaimanGreater Accra, Ghana 73 US AQI▼24
=247PrijedorSrpska, Bosnia and Herzegovina 73 US AQI▼37
=247AricaArica y Parinacota Region, Chile 73 US AQI▼23
=247QuthbullapurTelangana, India 73 US AQI▼22
251EvatonGauteng, South Africa 72 US AQI▼37
=252ObrenovacCentral Serbia, Serbia 72 US AQI▼25
=252RājgīrBihar, India 72 US AQI▼35
=254JaisalmerRajasthan, India 72 US AQI▼14
=254Cremonalast full day 11 OctLombardy, Italy 72 US AQI
=254CauquenesMaule Region, Chile 72 US AQI▼32
=257AhilyanagarMaharashtra, India 72 US AQI▲5
=257JājangOdisha, India 72 US AQI▼31
259PuducherryPuducherry, India 71 US AQI▼2
=260Târgu MureşMureș County, Romania 71 US AQI▼18
=260TshiterekeLimpopo, South Africa 71 US AQI▼29
262Naharlagunlast full day 7 OctArunachal Pradesh, India 71 US AQI▼26
=263Indorelast full day 10 OctMadhya Pradesh, India 71 US AQI▼13
=263LotaBiobio, Chile 71 US AQI▼24
265ModimolleLimpopo, South Africa 70 US AQI▼31
=266TokozaGauteng, South Africa 70 US AQI▼23
=266AntofagastaAntofagasta, Chile 70 US AQI▼20
=268QuinteroValparaiso, Chile 70 US AQI▼30
=268San Pedro de la PazBiobio, Chile 70 US AQI▼21
=270eMbalenhleMpumalanga, South Africa 70 US AQI▼35
=270Koīralast full day 11 OctOdisha, India 70 US AQI▲41
=272FīrozābādUttar Pradesh, India 70 US AQI
=272Khon KaenKhon Kaen, Thailand 70 US AQI▼24
=272TalaganteSantiago Metropolitan, Chile 70 US AQI▼31
=272ConcónValparaiso, Chile 70 US AQI▼28
276Khlong LuangPathum Thani, Thailand 69 US AQI▼23
=277PolokwaneLimpopo, South Africa 69 US AQI▼44
=277SeonghwanChungcheongnam-do, South Korea 69 US AQI▼32
=279OuagadougouCentre, Burkina Faso 69 US AQI
=279ToméBiobio, Chile 69 US AQI▼25
=279Lak SiBangkok, Thailand 69 US AQI▼19
282TalcahuanoBiobio, Chile 69 US AQI▼24
=283ThabazimbiLimpopo, South Africa 69 US AQI▼32
=283TocopillaAntofagasta, Chile 69 US AQI▼14
=283Khlong Sam WaBangkok, Thailand 69 US AQI▼19
=286KimjeJeollabuk-do, South Korea 69 US AQI▼23
=286PuchuncavíValparaiso, Chile 69 US AQI▼27
=288SecundaMpumalanga, South Africa 68 US AQI▼51
=288La SerenaCoquimbo Region, Chile 68 US AQI▼33
=290QuillotaValparaiso, Chile 68 US AQI▼25
=290CopiapóAtacama, Chile 68 US AQI▼20
=290TijuanaBaja California, Mexico 68 US AQI▼34
=293Samut SakhonSamut Sakhon, Thailand 68 US AQI▼20
=293Khan Na YaoBangkok, Thailand 68 US AQI▼21
=293MarikanaNorth West, South Africa 68 US AQI▼32
=296SmederevoCentral Serbia, Serbia 68 US AQI▼30
=296Novi PazarCentral Serbia, Serbia 68 US AQI▼20
=296GuwahatiAssam, India 68 US AQI▼8
=296ZagrebZagreb, Croatia 68 US AQI▲9
=296Lat KrabangBangkok, Thailand 68 US AQI▼14

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).