All 2,895 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 in Spain: no readings since 13 Oct (310 monitors). Their cities show older figures or are missing from this board, not clean.

Show 303 cities with only 1–2 sensors

=298Mexico CityMexico City, Mexico 63 US AQI▲53
=298TalaganteSantiago Metropolitan, Chile 63 US AQI▼39
=303TaichungTaiwan, Taiwan 63 US AQI▲104
=303PuliTaiwan, Taiwan 63 US AQI▲45
=303SuncheonJeollanam-do, South Korea 63 US AQI▼7
=303GongjuChungcheongnam-do, South Korea 63 US AQI▲1
=303CheorwonGangwon-do, South Korea 63 US AQI▲29
=303ChanghuaTaiwan, Taiwan 63 US AQI▲131
=303DakarDakar, Senegal 63 US AQI▼83
=303CoquimboCoquimbo Region, Chile 63 US AQI▼67
=303Santa AnitaJalisco, Mexico 63 US AQI▼47
312KoprivnicaKoprivnica-Križevci, Croatia 63 US AQI▲68
=313ChungjuNorth Chungcheong, South Korea 63 US AQI▲5
=313Seongnam-siGyeonggi-do, South Korea 63 US AQI
=313RadomskoŁódź Voivodeship, Poland 63 US AQI▼15
=316Nong Bua LamphuNong Bua Lamphu, Thailand 62 US AQI▲65
=316Ban Talat BuengChon Buri, Thailand 62 US AQI▼25
=316GwangjuGyeonggi-do, South Korea 62 US AQI▲1
=316JungpyongNorth Chungcheong, South Korea 62 US AQI▲28
=316AguascalientesAguascalientes, Mexico 62 US AQI▲25
=321WabuGyeonggi-do, South Korea 62 US AQI▲18
=321ChiguayanteBiobio, Chile 62 US AQI▼22
=323KikindaVojvodina, Serbia 62 US AQI▼128
=323NantouTaiwan, Taiwan 62 US AQI▲85
=323WaegwanGyeongsangbuk-do, South Korea 62 US AQI▲4
=323HwawŏnDaegu, South Korea 62 US AQI▼9
=327DebrecenHajdú-Bihar, Hungary 62 US AQI▼110
=327RuseRuse, Bulgaria 62 US AQI▼113
=327PolokwaneLimpopo, South Africa 62 US AQI▼24
=327HekinanAichi, Japan 62 US AQI▲44
=327HwadoGyeonggi-do, South Korea 62 US AQI▲60
=327NamyangjuGyeonggi-do, South Korea 62 US AQI▲6
=327GyálPest County, Hungary 62 US AQI▼243
=327HuascoAtacama, Chile 62 US AQI▼50
=327CalamaAntofagasta, Chile 62 US AQI▼22
=336FujisatoMie, Japan 62 US AQI▼17
=336Novi SadVojvodina, Serbia 62 US AQI▼136
=338VarnaVarna, Bulgaria 61 US AQI▼100
=338ZamośćLublin, Poland 61 US AQI▼70
=338HetaudaBagmati Province, Nepal 61 US AQI
=338Lop BuriLopburi, Thailand 61 US AQI▲30
=338ChaozhouTaiwan, Taiwan 61 US AQI▼29
=338MexicaliBaja California, Mexico 61 US AQI▼101
344NiskoSubcarpathia, Poland 61 US AQI▼81
=345ThabazimbiLimpopo, South Africa 61 US AQI▲29
=345XizhiTaipei, Taiwan 61 US AQI▲105
=347KrompachyKošice Region, Slovakia 61 US AQI▼101
=347ShenzhenTaiwan, Taiwan 61 US AQI▲97
=347DaeguDaegu, South Korea 61 US AQI▼10
=347SangjuGyeongsangbuk-do, South Korea 61 US AQI▼9
=347BeolgyoJeollanam-do, South Korea 61 US AQI▲28
=347Gyeongsan-siGyeongsangbuk-do, South Korea 61 US AQI▼5
=347GwangjuGwangju, South Korea 61 US AQI▲2
=347KinzanChungcheongnam-do, South Korea 61 US AQI▲22
=347HayangGyeongsangbuk-do, South Korea 61 US AQI▼4
=347ŻywiecSilesia, Poland 61 US AQI▲15
=357PhalaborwaLimpopo, South Africa 61 US AQI▼23
=357FreetownWestern Area, Sierra Leone 61 US AQI▲42
=357FunzaCundinamarca, Colombia 61 US AQI▼81
=357Alto Hospiciolast full day 11 OctTarapacá, Chile 61 US AQI▼51
=361BuziTaiwan, Taiwan 61 US AQI▲193
=361KaliszGreater Poland, Poland 61 US AQI▼41
=363Suphan BuriSuphan Buri, Thailand 60 US AQI▲40
=363KłodzkoLower Silesia, Poland 60 US AQI▲15
=365PrešovPrešov Region, Slovakia 60 US AQI▼147
=365MiaoliTaiwan, Taiwan 60 US AQI▲150
=365TemaGreater Accra, Ghana 60 US AQI▼104
=365AlessandriaPiedmont, Italy 60 US AQI▼161
=365HanfordCalifornia, United States 60 US AQI▼75
=370KrielMpumalanga, South Africa 60 US AQI▼4
=370YasothonYasothon, Thailand 60 US AQI▲57
=370OpoleOpole Voivodeship, Poland 60 US AQI▼42
=370MurraysvilleNorth Carolina, United States 60 US AQI▼86
=370BoseongJeollanam-do, South Korea 60 US AQI▲24
=375KazincbarcikaBorsod-Abaúj-Zemplén, Hungary 60 US AQI▼118
=375PhayaoPhayao, Thailand 60 US AQI▲37
=375TratTrat, Thailand 60 US AQI▼49
=375SurinSurin, Thailand 60 US AQI▲46
=375HaenamJeollanam-do, South Korea 60 US AQI▲1
=375OwariasahiAichi, Japan 60 US AQI▲61
=381Uthai ThaniUthai Thani, Thailand 60 US AQI▲21
=381NeiliTaiwan, Taiwan 60 US AQI▲145
=381NangenJeollabuk-do, South Korea 60 US AQI▼24
=381KwangyangJeollanam-do, South Korea 60 US AQI▲17
=381TongyeongGyeongsangnam-do, South Korea 60 US AQI▼11
=381Ciudad ApodacaNuevo León, Mexico 60 US AQI▲10
=381ChangnyeongGyeongsangnam-do, South Korea 60 US AQI▲12
=388MagongTaiwan, Taiwan 59 US AQI▲16
=388SokchoGangwon-do, South Korea 59 US AQI▲21
=388TokonameAichi, Japan 59 US AQI▲60
=388HadongGyeongsangnam-do, South Korea 59 US AQI▼3
=392AcharnésAttica, Greece 59 US AQI▲9
=392LamphunLamphun, Thailand 59 US AQI▲21
=392UttaraditUttaradit, Thailand 59 US AQI▲40
=392MiryangGyeongsangnam-do, South Korea 59 US AQI▲37
=392KariyaAichi, Japan 59 US AQI▲48
=392Laem ChabangChon Buri, Thailand 59 US AQI▼32
=392ZvolenBanská Bystrica Region, Slovakia 59 US AQI▼104
=392MortaraLombardy, Italy 59 US AQI▼103
=392San Francisco De BorjaLima region, Peru 59 US AQI

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 7 days to 14 Oct 2026, 07:00 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 07:07 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).