SmogRank / History / March 18, 2024
Most polluted cities on March 18, 2024
1,453 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 410.0 µg/m³. Each city's own local calendar day.
← N'Djamena 410.0 µg/m³
400 µg/m³15 WHO 24-hour guideline
- 1N'DjamenaN’Djaména, Chad 500+27.3×
- 2Dhakalow-cost sensorsDhaka Division, Bangladesh 24411.3×
- 3Lahorelow-cost sensorsPunjab, Pakistan 1927.6×
- 4DelhiDelhi, India 1846.9×
- 5Kathmandulow-cost sensorsBagmati Province, Nepal 1826.7×
- 6Vientianelow-cost sensorsVientiane Prefecture, Laos 1584.4×
- 7ShenyangLiaoning, China 1533.9×
- 8YangonYangon, Myanmar 1523.8×
- 9Karachilow-cost sensorsSindh, Pakistan 1513.7×
- 10BeijingBeijing, China 1403.4×
- 11YachimataChiba, Japan 1333.2×
- 12KigaliKigali, Rwanda 1323.2×
- 13BaghdadBaghdad, Iraq 1273.1×
- 13Islamabadlow-cost sensorsIslamabad, Pakistan 1273.1×
- 15AshgabatAshgabat, Turkmenistan 1243.0×
- 16ZhushanTaiwan, Taiwan 1243.0×
- 17Puerto VarasLos Lagos Region, Chile 1192.9×
- 18FengshanTakao, Taiwan 1172.8×
- 19Chiayi CityTaiwan, Taiwan 1152.7×
- 20MumbaiMaharashtra, India 1132.7×
- 21ChaozhouTaiwan, Taiwan 1132.7×
- 22DouliuTaiwan, Taiwan 1122.7×
- 23KaohsiungTakao, Taiwan 1092.6×
- 24BeigangTaiwan, Taiwan 1082.6×
- 25YongkangTaiwan, Taiwan 1082.6×
- 26AstanaAstana, Kazakhstan 1052.5×
- 27XinyingTaiwan, Taiwan 1042.4×
- 28NantouTaiwan, Taiwan 1032.4×
- 29TainanTaiwan, Taiwan 1012.4×
- 30ErlunTaiwan, Taiwan 992.3×
- 31RabinalBaja Verapaz, Guatemala 982.3×
- 32Ulan BatorUlaanbaatar, Mongolia 962.2×
- 33YuanlinTaiwan, Taiwan 962.2×
- 33Wan ChaiWan Chai, Hong Kong 962.2×
- 35TaibaoTaiwan, Taiwan 952.2×
- 36HyderabadTelangana, India 942.1×
- 36ErlinTaiwan, Taiwan 942.1×
- 38HanoiHanoi, Vietnam 942.1×
- 39GuangzhouGuangdong, China 922.1×
- 40TaichungTaiwan, Taiwan 912.1×
- 41PuliTaiwan, Taiwan 912.0×
- 42SarajevoFederation of B&H, Bosnia and Herzegovina 902.0×
- 43Mong KokYau Tsim Mong District, Hong Kong 902.0×
- 43Puente AltoSantiago Metropolitan, Chile 902.0×
- 45QuillotaValparaiso, Chile 892.0×
- 46Khlong LuangPathum Thani, Thailand 881.9×
- 46CelayaGuanajuato, Mexico 881.9×
- 48PljevljaPljevlja, Montenegro 881.9×
- 49Santa Anita - Los FicusLima region, Peru 881.9×
- 50LazarevacCentral Serbia, Serbia 871.9×
- 51BakuBaki, Azerbaijan 871.9×
- 52ColomboWestern Province, Sri Lanka 861.9×
- 53XizhouTaiwan, Taiwan 861.9×
- 54Almatylow-cost sensorsAlmaty, Kazakhstan 851.8×
- 54QuinteroValparaiso, Chile 851.8×
- 56Addis AbabaAddis Ababa, Ethiopia 851.8×
- 56Nong KhaemBangkok, Thailand 851.8×
- 58La UniónLos Ríos Region, Chile 841.8×
- 59ChanghuaTaiwan, Taiwan 841.8×
- 60BuziTaiwan, Taiwan 831.8×
- 61SantiagoSantiago Metropolitan, Chile 821.7×
- 62YotsukaidōChiba, Japan 821.7×
- 63BangkokBangkok, Thailand 811.7×
- 64CallaoCallao, Peru 811.7×
- 65PančevoVojvodina, Serbia 811.7×
- 65Sham Shui PoSham Shui Po District, Hong Kong 811.7×
- 67TocopillaAntofagasta, Chile 811.7×
- 67Puerto MonttLos Lagos Region, Chile 811.7×
- 69Ban Khlong PrawetBangkok, Thailand 801.7×
- 69HualpénBiobio, Chile 801.7×
- 69ConcónValparaiso, Chile 801.7×
- 72Viña del MarValparaiso, Chile 801.6×
- 73Abujalow-cost sensorsFCT, Nigeria 801.6×
- 74Bielsko-BialaSilesia, Poland 801.6×
- 74TalaganteSantiago Metropolitan, Chile 801.6×
- 76ŻywiecSilesia, Poland 791.6×
- 77HsinchuTaiwan, Taiwan 791.6×
- 78Phra PradaengSamut Prakan, Thailand 791.6×
- 79Tuen MunTuen Mun, Hong Kong 791.6×
- 80ZemunCentral Serbia, Serbia 791.6×
- 81AntananarivoAnalamanga, Madagascar 781.6×
- 81VictoriaCentral and Western, Hong Kong 781.6×
- 83TemucoAraucania, Chile 781.6×
- 84OsornoLos Lagos Region, Chile 781.6×
- 85ShanghaiShanghai, China 781.6×
- 85YokotaTokyo, Japan 781.6×
- 87CairoCairo, Egypt 771.6×
- 88SalorTashkent Region, Uzbekistan 771.5×
- 89ToufenTaiwan, Taiwan 771.5×
- 90QuilpuéValparaiso, Chile 771.5×
- 90CoquimboCoquimbo Region, Chile 771.5×
- 92Nakhon PathomNakhon Pathom, Thailand 761.5×
- 93Mueang NonthaburiNonthaburi, Thailand 761.5×
- 94ZhubeiTaiwan, Taiwan 761.5×
- 95Bang Bo DistrictSamut Prakan, Thailand 751.5×
- 96MiaoliTaiwan, Taiwan 751.5×
- 96RancaguaO'Higgins Region, Chile 751.5×
- 98Botevgradlow-cost sensorsSofia, Bulgaria 751.5×
- 98MagongTaiwan, Taiwan 751.5×
- 100ShulinTaipei, Taiwan 751.5×
- 101TōganeChiba, Japan 751.5×
- 102JakartaJakarta, Indonesia 741.4×
- 102AricaArica y Parinacota Region, Chile 741.4×
- 104CalamaAntofagasta, Chile 731.4×
- 105Samut SakhonSamut Sakhon, Thailand 731.4×
- 105San CarlosÑuble, Chile 731.4×
- 105CopiapóAtacama, Chile 731.4×
- 108Quezon Citylow-cost sensorsNational Capital Region, Philippines 711.3×
- 108Puerto AysénAysén, Chile 711.3×
- 108ChillánÑuble, Chile 711.3×
- 108San Francisco De BorjaLima region, Peru 711.3×
- 112Samut PrakanSamut Prakan, Thailand 711.3×
- 113ZgierzŁódź Voivodeship, Poland 711.3×
- 113ValdiviaLos Ríos Region, Chile 711.3×
- 113Los ÁngelesBiobio, Chile 711.3×
- 113La SerenaCoquimbo Region, Chile 711.3×
- 117CoronelBiobio, Chile 711.3×
- 118SiedlceMazovia, Poland 711.3×
- 118NeiliTaiwan, Taiwan 711.3×
- 120AntofagastaAntofagasta, Chile 701.3×
- 121ToméBiobio, Chile 701.3×
- 121San Luis de la PazGuanajuato, Mexico 701.3×
- 121HigashikurumeTokyo, Japan 701.3×
- 124Kampalalow-cost sensorsCentral Region, Uganda 701.3×
- 124NacimientoBiobio, Chile 701.3×
- 126Kwai ChungKwai Tsing District, Hong Kong 691.3×
- 127CuricóMaule Region, Chile 691.3×
- 128HualquiBiobio, Chile 691.3×
- 129ŁukówLublin, Poland 691.2×
- 129GrajewoPodlasie, Poland 691.2×
- 129Tai PoTai Po, Hong Kong 691.2×
- 132TaipeiTaiwan, Taiwan 691.2×
- 132RengoO'Higgins Region, Chile 691.2×
- 134OtwockMazovia, Poland 691.2×
- 134SremčicaCentral Serbia, Serbia 691.2×
- 134TalcahuanoBiobio, Chile 691.2×
- 137DushanbeDushanbe, Tajikistan 681.2×
- 138ZhudongTaiwan, Taiwan 681.2×
- 138Tin Shui WaiYuen Long, Hong Kong 681.2×
- 140XizhiTaipei, Taiwan 681.2×
- 140Tsuen WanTsuen Wan, Hong Kong 681.2×
- 140SalamancaGuanajuato, Mexico 681.2×
- 140San Pedro de la PazBiobio, Chile 681.2×
- 144DziałdowoWarmia-Masuria, Poland 671.2×
- 144DaxiTaiwan, Taiwan 671.2×
- 144SōsaChiba, Japan 671.2×
- 147BelgradeCentral Serbia, Serbia 671.2×
- 147Sau Mau PingKwun Tong District, Hong Kong 671.2×
- 149DębicaSubcarpathia, Poland 671.2×
- 150KagoshimaKagoshima, Japan 671.2×
- 150PodgoricaPodgorica, Montenegro 671.2×
- 150CauquenesMaule Region, Chile 671.2×
- 150ColumbiaTennessee, United States 671.2×
- 154TalcaMaule Region, Chile 661.2×
- 155SendaiKagoshima, Japan 661.1×
- 156MiskolcBorsod-Abaúj-Zemplén, Hungary 661.1×
- 157KushikinoKagoshima, Japan 651.1×
- 158AlgiersAlgiers, Algeria 651.1×
- 159CuranilahueBiobio, Chile 641.1×
- 159BaytownTexas, United States 641.1×
- 161San Tung Chung HangIslands, Hong Kong 641.1×
- 161Jastrzębie ZdrójSilesia, Poland 641.1×
- 163FanlingNorth District, Hong Kong 641.1×
- 163Maebaru-chūōFukuoka, Japan 641.1×
- 165New Taipei CityTaipei, Taiwan 641.1×
- 166NakatsuOita, Japan 641.1×
- 166IzumiKagoshima, Japan 641.1×
- 166San Juan del RíoQuerétaro, Mexico 641.1×
- 166CoyhaiqueAysén, Chile 641.1×
- 170SaseboNagasaki, Japan 631.1×
- 170Kaseda-shirakameKagoshima, Japan 631.1×
- 172IrapuatoGuanajuato, Mexico 631.0×
- 172AmamiKagoshima, Japan 631.0×
- 174NagasakiNagasaki, Japan 631.0×
- 175LublinLublin, Poland 631.0×
- 175TogitsuNagasaki, Japan 631.0×
- 175ŌmutaFukuoka, Japan 631.0×
- 175HamarInnlandet, Norway 631.0×
- 179PruszkówMazovia, Poland 631.0×
- 179Imarichō-kōSaga, Japan 631.0×
- 179ConcepciónBiobio, Chile 631.0×
- 179ChiguayanteBiobio, Chile 631.0×
- 183MinamikyushuKagoshima, Japan 621.0×
- 184KatowiceSilesia, Poland 621.0×
- 184KogaFukuoka, Japan 621.0×
- 186FukuokaFukuoka, Japan 621.0×
- 187SaikiOita, Japan 611.0×
- 187HikariYamaguchi, Japan 611.0×
- 187TaoyuanTaiwan, Taiwan 611.0×
- 190Alto HospicioTarapacá, Chile 611.0×
- 190SalemOregon, United States 611.0×
- 192Ulu BedokSingapore 611.0×
- 193KamloopsBritish Columbia, Canada 611.0×
- 194TakanabeMiyazaki, Japan 610.9×
- 194BelmopanCayo District, Belize 610.9×
- 196SzczecinWest Pomerania, Poland 600.9×
- 196MiamiFlorida, United States 600.9×
- 196MatsuuraNagasaki, Japan 600.9×
- 199RadomMazovia, Poland 600.9×
- 199TepicNayarit, Mexico 600.9×
Top 200 of 1,453 shown.
Good0–50
Moderate51–100
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 and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.
Use this board
SmogRank, most polluted cities, PM2.5, March 18, 2024, smogrank.com/history/2024-03-18 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.