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.

=693HayangGyeongsangbuk-do, South Korea 54 US AQI▼78
=693JungpyongNorth Chungcheong, South Korea 54 US AQI▼77
=693MinamataKumamoto, Japan 54 US AQI▼68
=693ArrecifeCanary Islands, Spain 54 US AQI▼196
=693ZumarragaBasque Country, Spain 54 US AQI
=693CuencaCastille-La Mancha, Spain 54 US AQI
=693Vareselast full day 11 OctLombardy, Italy 54 US AQI
=693Ciudad General EscobedoNuevo León, Mexico 54 US AQI▼96
=693DallasTexas, United States 54 US AQI▼65
=693KotōKumamoto, Japan 54 US AQI▼49
=711Codlealast full day 10 OctBrașov County, Romania 54 US AQI▼89
=711Bucharestlast full day 10 OctBucharest, Romania 54 US AQI▲19
=711Nakhon NayokNakhon Nayok, Thailand 54 US AQI▼78
=711Ban Thai TanAng Thong, Thailand 54 US AQI▼65
=711MungyeongGyeongsangbuk-do, South Korea 54 US AQI▼77
=711ImsilJeollabuk-do, South Korea 54 US AQI▼97
=711HwasunJeollanam-do, South Korea 54 US AQI▼108
=711ChangwonGyeongsangnam-do, South Korea 54 US AQI▼87
=711ChangsuJeollabuk-do, South Korea 54 US AQI▼94
=711MiyakonojōMiyazaki, Japan 54 US AQI▼75
=711GdyniaPomerania, Poland 54 US AQI
=711PodgoricaPodgorica, Montenegro 54 US AQI▼137
=711MaconGeorgia, United States 54 US AQI▼45
=711ComptonCalifornia, United States 54 US AQI▼101
=711Los AngelesCalifornia, United States 54 US AQI▼125
=711MercedCalifornia, United States 54 US AQI▼71
=711KamisuIbaraki, Japan 54 US AQI▼68
=728Suphan BuriSuphan Buri, Thailand 54 US AQI▼55
=728TaharaAichi, Japan 54 US AQI▼24
=728HekinanAichi, Japan 54 US AQI▼23
=728CandelariaCanary Islands, Spain 54 US AQI▼205
=728GiubiascoTicino, Switzerland 54 US AQI▼123
=728Berlinlast full day 11 OctState of Berlin, Germany 54 US AQI
=728EsztergomKomárom-Esztergom, Hungary 54 US AQI▼91
=728StudénkaMoravian-Silesian Region, Czechia 54 US AQI
=728Moravská Třeboválast full day 11 OctPardubice Region, Czechia 54 US AQI
=728TrentoTrentino-Alto Adige, Italy 54 US AQI▼89
=728Peschiera del GardaVeneto, Italy 54 US AQI
=728HadongGyeongsangnam-do, South Korea 54 US AQI▼83
=740Otopenilast full day 10 OctIlfov, Romania 54 US AQI▲5
=740TrebišovKošice Region, Slovakia 54 US AQI▼111
=740YecheonGyeongsangbuk-do, South Korea 54 US AQI▼82
=740Uekimachi-mōnoKumamoto, Japan 54 US AQI▼81
=740HitoyoshiKumamoto, Japan 54 US AQI▼79
=740Seongnam-siGyeonggi-do, South Korea 54 US AQI▼92
=740ZvolenBanská Bystrica Region, Slovakia 54 US AQI▼91
=740RoveretoTrentino-Alto Adige, Italy 54 US AQI▼90
=740Ribeirão PretoSão Paulo, Brazil 54 US AQI▼76
=740Ferraz de VasconcelosSão Paulo, Brazil 54 US AQI▼75
=740BakersfieldCalifornia, United States 54 US AQI▼88
=740San DiegoCalifornia, United States 54 US AQI▼98
=740HyūgaMiyazaki, Japan 54 US AQI▼72
=740MinamikyushuKagoshima, Japan 54 US AQI▼71
=754KazincbarcikaBorsod-Abaúj-Zemplén, Hungary 53 US AQI▼84
=754RevúcaBanská Bystrica Region, Slovakia 53 US AQI▼99
=754HumennéPrešov Region, Slovakia 53 US AQI▼83
=754DębicaSubcarpathia, Poland 53 US AQI▲172
=754YeongjuGyeongsangbuk-do, South Korea 53 US AQI▼97
=754TokiGifu, Japan 53 US AQI▼51
=754OnomichiHiroshima, Japan 53 US AQI▼94
=754KobayashiMiyazaki, Japan 53 US AQI▼78
=754MeulebekeFlanders, Belgium 53 US AQI▼75
=754ŽarnovicaBanská Bystrica Region, Slovakia 53 US AQI▼116
=754ZnojmoSouth Moravian, Czechia 53 US AQI
=754Hradec KrálovéHradec Králové Region, Czechia 53 US AQI
=754ManlleuCatalonia, Spain 53 US AQI▼127
=754MantuaLombardy, Italy 53 US AQI
=754Fierlast full day 8 OctFier County, Albania 53 US AQI
=754MonroeLouisiana, United States 53 US AQI▼87
=754RichmondCalifornia, United States 53 US AQI▼113
=771SantyokuGangwon-do, South Korea 53 US AQI▼97
=771NaesŏGyeongsangnam-do, South Korea 53 US AQI▼94
=771VallettaValletta, Malta 53 US AQI▼65
=771NiceProvence-Alpes-Côte d'Azur, France 53 US AQI▼46
=771RužomberokŽilina Region, Slovakia 53 US AQI▼64
=771MostÚstí nad Labem Region, Czechia 53 US AQI
=771BeneventoCampania, Italy 53 US AQI▼108
=771NikšićOpština Nikšić, Montenegro 53 US AQI▼163
=771KutinaSisak-Moslavina, Croatia 53 US AQI
=771Santo AndréSão Paulo, Brazil 53 US AQI▼59
=771Tepiclast full day 10 OctNayarit, Mexico 53 US AQI▼120
=771MarionArkansas, United States 53 US AQI▼80
=783SzegedCsongrád, Hungary 53 US AQI▼101
=783Ubon RatchathaniUbon Ratchathani, Thailand 53 US AQI▼111
=783Sing BuriSing Buri, Thailand 53 US AQI▼85
=783YangsanGyeongsangnam-do, South Korea 53 US AQI▼50
=783GangneungGangwon-do, South Korea 53 US AQI▼82
=783AnseongGyeonggi-do, South Korea 53 US AQI▼108
=783AndongGyeongsangbuk-do, South Korea 53 US AQI▼98
=783TomiokaKumamoto, Japan 53 US AQI▼81
=783TakanabeMiyazaki, Japan 53 US AQI▼97
=783HiwasauraTokushima, Japan 53 US AQI▼66
=783YeosuJeollanam-do, South Korea 53 US AQI▼136
=783PúchovTrenčín Region, Slovakia 53 US AQI▼96
=783KarvináMoravian-Silesian Region, Czechia 53 US AQI
=783JundiaíSão Paulo, Brazil 53 US AQI▼94
=783MonterreyNuevo León, Mexico 53 US AQI▼93
=783LimaOhio, United States 53 US AQI▼91
=783HawthorneCalifornia, United States 53 US AQI▼130
=783AraoKumamoto, Japan 53 US AQI▼90

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).