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

=199TainanTaiwan, Taiwan 69 US AQI▲41
=199SaltilloCoahuila, Mexico 69 US AQI▼47
=203KalasinKalasin, Thailand 68 US AQI▲28
=203Kwai ChungKwai Tsing District, Hong Kong 68 US AQI▲63
=203Bucheon-siGyeonggi-do, South Korea 68 US AQI▲5
=203Chinch'ŏnNorth Chungcheong, South Korea 68 US AQI▲13
=207Si Maha PhotPrachin Buri, Thailand 68 US AQI▼18
=207YuanlinTaiwan, Taiwan 68 US AQI▲79
=207SeosanChungcheongnam-do, South Korea 68 US AQI▼27
=207Icheon-siGyeonggi-do, South Korea 68 US AQI▲8
=211Ban Khlong PrawetBangkok, Thailand 68 US AQI▼25
=211BeigangTaiwan, Taiwan 68 US AQI▲68
=211JinchengFukien, Taiwan 68 US AQI▲22
=211HualquiBiobio, Chile 68 US AQI▼29
=211CuricóMaule Region, Chile 68 US AQI▼44
=216Sau Mau PingKwun Tong District, Hong Kong 68 US AQI▲56
=216NonsanChungcheongnam-do, South Korea 68 US AQI▼38
=216San Pedro de la PazBiobio, Chile 68 US AQI▼40
=219AshaimanGreater Accra, Ghana 68 US AQI▼83
=219CoronelBiobio, Chile 68 US AQI▼9
=219Bueng KumBangkok, Thailand 68 US AQI▼14
222MunsanGyeonggi-do, South Korea 67 US AQI▲5
=223SecundaMpumalanga, South Africa 67 US AQI▼38
=223ConcónValparaiso, Chile 67 US AQI▼11
=225BakuBaki, Azerbaijan 67 US AQI▼52
=225SaraburiSaraburi, Thailand 67 US AQI▲5
=225Mueang NonthaburiNonthaburi, Thailand 67 US AQI▲16
=225Sannazzaro de' BurgondiLombardy, Italy 67 US AQI▲45
229TijuanaBaja California, Mexico 67 US AQI▼57
230PuchuncavíValparaiso, Chile 66 US AQI▼37
=231OtwockMazovia, Poland 66 US AQI▼67
=231TrangTrang, Thailand 66 US AQI▼54
=231PhatthalungPhatthalung, Thailand 66 US AQI▼41
=231VictoriaCentral and Western, Hong Kong 66 US AQI▲63
=231Trevigliolast full day 11 OctLombardy, Italy 66 US AQI
=231PljevljaPljevlja, Montenegro 66 US AQI▼86
=237SidonSouth Governorate, Lebanon 66 US AQI▲8
=237Sakon NakhonSakon Nakhon, Thailand 66 US AQI▲87
239Tsuen WanTsuen Wan, Hong Kong 66 US AQI▲26
=240ShakaskraalKwaZulu-Natal, South Africa 66 US AQI▼65
=240Nakhon PathomNakhon Pathom, Thailand 66 US AQI▼14
=240YongkangTaiwan, Taiwan 66 US AQI▲43
=243AmandelbultLimpopo, South Africa 66 US AQI▲4
=243Sha TinSha Tin, Hong Kong 66 US AQI▲92
=243Koch'angJeollabuk-do, South Korea 66 US AQI▲37
=243AnseongGyeonggi-do, South Korea 66 US AQI▲1
=243LotaBiobio, Chile 66 US AQI▼21
=248BharatpurBagmati Province, Nepal 65 US AQI
=248DaejeonDaejeon, South Korea 65 US AQI▲6
=248GumiGyeongsangbuk-do, South Korea 65 US AQI▼14
=248JeonjuJeollabuk-do, South Korea 65 US AQI▲25
=248Milanlast full day 11 OctLombardy, Italy 65 US AQI
=248TshiterekeLimpopo, South Africa 65 US AQI▲4
254XinyingTaiwan, Taiwan 65 US AQI▲77
=255ChaiyaphumChaiyaphum, Thailand 65 US AQI▲75
=255SintansinDaejeon, South Korea 65 US AQI
=255NajuJeollanam-do, South Korea 65 US AQI▲3
=255QuillotaValparaiso, Chile 65 US AQI▼34
=255CopiapóAtacama, Chile 65 US AQI▼44
=260Hua HinPrachuap Khiri Khan, Thailand 65 US AQI▲15
=260Amnat CharoenAmnat Charoen, Thailand 65 US AQI▲56
=260KaohsiungTakao, Taiwan 65 US AQI▼12
=260MasanGwangju, South Korea 65 US AQI▼10
=260KoesanNorth Chungcheong, South Korea 65 US AQI▲27
=260CorcoranCalifornia, United States 65 US AQI▼37
=266RayongRayong, Thailand 64 US AQI▼6
=266FengshanTakao, Taiwan 64 US AQI▲3
=266Uijeongbu-siGyeonggi-do, South Korea 64 US AQI▲29
=266ZagrebZagreb, Croatia 64 US AQI▼134
=266Viña del MarValparaiso, Chile 64 US AQI▼31
=266SinanJeollanam-do, South Korea 64 US AQI▲5
=272TaibaoTaiwan, Taiwan 64 US AQI▲80
=272Chiayi CityTaiwan, Taiwan 64 US AQI▲81
=272TocopillaAntofagasta, Chile 64 US AQI▼66
=272MarikanaNorth West, South Africa 64 US AQI▼59
=276TaharaAichi, Japan 64 US AQI▲16
=276RengoO'Higgins Region, Chile 64 US AQI▼48
=276QuilpuéValparaiso, Chile 64 US AQI▼47
=276GuadalajaraJalisco, Mexico 64 US AQI▼14
=276MiamiOklahoma, United States 64 US AQI▼25
=281BelgradeCentral Serbia, Serbia 64 US AQI▼107
=281Taesal-liChungcheongnam-do, South Korea 64 US AQI▲31
=281BuyeoChungcheongnam-do, South Korea 64 US AQI▼14
=281Rio ClaroSão Paulo, Brazil 64 US AQI▼57
=281SoachaCundinamarca, Colombia 64 US AQI▼56
=286MiddelburgMpumalanga, South Africa 64 US AQI▼8
=286Udon ThaniUdon Thani, Thailand 64 US AQI▲61
=286HanamGyeonggi-do, South Korea 64 US AQI▲11
=289Ban Thai TanAng Thong, Thailand 63 US AQI▲19
=289EisenGyeongsangbuk-do, South Korea 63 US AQI▲21
=289WŏnjuGangwon-do, South Korea 63 US AQI▲22
=289Ciudad NezahualcoyotlMéxico, Mexico 63 US AQI▲167
=289MeccaCalifornia, United States 63 US AQI▼95
=294ZhongliaoTaiwan, Taiwan 63 US AQI▲134
=294LodiLombardy, Italy 63 US AQI
=294BirendranagarKarnali Pradesh, Nepal 63 US AQI
=294Sai MaiBangkok, Thailand 63 US AQI▲6
=298Chai NatChai Nat, Thailand 63 US AQI▲58
=298LuguTaiwan, Taiwan 63 US AQI▲61
=298Donghae CityGangwon-do, South Korea 63 US AQI▼5

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).