SmogRank / History / January 28, 2024
Most polluted cities on January 28, 2024
2,044 cities ranked by their average PM2.5 over the day; the worst was Delhi, India, at 272.0 µg/m³. Each city's own local calendar day.
- North-eastern Spain and France, January and February 202427 January to 2 February 2024, 7 days33 cities44Paredes
- Eastern Europe, January 202428 to 31 January 2024, 4 days50 cities80Czechowice-Dziedzice
- Canary Islands, Spain, January 202425 to 30 January 2024, 6 days13 cities71La Orotava
Bad-air episodes during January 28, 2024. All episodes.
← Delhi 272.0 µg/m³
200 µg/m³15 WHO 24-hour guideline
- 1DelhiDelhi, India 39418.1×
- 2N'DjamenaN’Djaména, Chad 27413.3×
- 3KolkataWest Bengal, India 25111.7×
- 4Abujalow-cost sensorsFCT, Nigeria 25011.7×
- 5Dhakalow-cost sensorsDhaka Division, Bangladesh 23610.7×
- 6Islamabadlow-cost sensorsIslamabad, Pakistan 22710.1×
- 7Ulan BatorUlaanbaatar, Mongolia 22510.0×
- 8Kampalalow-cost sensorsCentral Region, Uganda 2068.7×
- 9Karachilow-cost sensorsSindh, Pakistan 1937.7×
- 10Bishkeklow-cost sensorsBishkek, Kyrgyzstan 1816.6×
- 11ShenyangLiaoning, China 1796.3×
- 12Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 1735.8×
- 13Kathmandulow-cost sensorsBagmati Province, Nepal 1735.8×
- 14KigaliKigali, Rwanda 1665.1×
- 15HyderabadTelangana, India 1644.9×
- 16PhetchaburiPhetchaburi, Thailand 1634.8×
- 17Almatylow-cost sensorsAlmaty, Kazakhstan 1634.8×
- 18Samut SakhonSamut Sakhon, Thailand 1624.8×
- 19MumbaiMaharashtra, India 1624.7×
- 20RatchaburiRatchaburi, Thailand 1614.7×
- 21Banja LukaSrpska, Bosnia and Herzegovina 1614.6×
- 22CairoCairo, Egypt 1564.2×
- 23Santa Cruz de la PalmaCanary Islands, Spain 1564.2×
- 24Lat KrabangBangkok, Thailand 1564.1×
- 25KanchanaburiKanchanaburi, Thailand 1554.1×
- 26Nong KhaemBangkok, Thailand 1544.0×
- 27Khlong Sam WaBangkok, Thailand 1544.0×
- 28Bang Bo DistrictSamut Prakan, Thailand 1523.8×
- 29Bang NaBangkok, Thailand 1523.8×
- 30Bueng KumBangkok, Thailand 1513.7×
- 31AranyaprathetSa Kaeo, Thailand 1503.7×
- 32Ban Samae DamBangkok, Thailand 1493.7×
- 33Mae SotTak, Thailand 1483.6×
- 34Bang Khun ThianBangkok, Thailand 1483.6×
- 35YangonYangon, Myanmar 1473.6×
- 36Samut PrakanSamut Prakan, Thailand 1463.6×
- 37Saphan SungBangkok, Thailand 1433.5×
- 38Khan Na YaoBangkok, Thailand 1413.5×
- 39Khlong LuangPathum Thani, Thailand 1413.5×
- 40Hua HinPrachuap Khiri Khan, Thailand 1413.4×
- 40Ban ChangRayong, Thailand 1413.4×
- 42Bang KapiBangkok, Thailand 1403.4×
- 43Nakhon PathomNakhon Pathom, Thailand 1393.4×
- 44Si Maha PhotPrachin Buri, Thailand 1383.4×
- 45RayongRayong, Thailand 1383.4×
- 46Phra PradaengSamut Prakan, Thailand 1373.3×
- 46Ban Khlong PrawetBangkok, Thailand 1373.3×
- 48Laem ChabangChon Buri, Thailand 1363.3×
- 49Chai NatChai Nat, Thailand 1363.3×
- 50Lak SiBangkok, Thailand 1353.3×
- 51BangkokBangkok, Thailand 1343.3×
- 52Mueang NonthaburiNonthaburi, Thailand 1343.3×
- 53Nong ChokBangkok, Thailand 1343.2×
- 54DushanbeDushanbe, Tajikistan 1323.2×
- 55TratTrat, Thailand 1303.2×
- 56Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand 1293.1×
- 57SarajevoFederation of B&H, Bosnia and Herzegovina 1283.1×
- 58Nakhon SawanNakhon Sawan, Thailand 1273.1×
- 59LampangLampang, Thailand 1263.0×
- 59Ban Talat BuengChon Buri, Thailand 1263.0×
- 61SukhothaiSukhothai, Thailand 1243.0×
- 61Santa Cruz de TenerifeCanary Islands, Spain 1243.0×
- 63AlessandriaPiedmont, Italy 1243.0×
- 64Suphan BuriSuphan Buri, Thailand 1222.9×
- 65Sai MaiBangkok, Thailand 1212.9×
- 66Sing BuriSing Buri, Thailand 1212.9×
- 67AstanaAstana, Kazakhstan 1212.9×
- 68AugustówPodlasie, Poland 1192.9×
- 69TurinPiedmont, Italy 1192.9×
- 70SaraburiSaraburi, Thailand 1172.8×
- 71EtwatwaGauteng, South Africa 1162.8×
- 72La OrotavaCanary Islands, Spain 1162.8×
- 72ZgierzŁódź Voivodeship, Poland 1162.8×
- 74PinetownKwaZulu-Natal, South Africa 1152.8×
- 74SalorTashkent Region, Uzbekistan 1152.8×
- 76Mollet del VallèsCatalonia, Spain 1152.7×
- 77CapannoriTuscany, Italy 1132.7×
- 78Granadilla de AbonaCanary Islands, Spain 1132.7×
- 79Lop BuriLopburi, Thailand 1122.7×
- 80ChennaiTamil Nadu, India 1112.6×
- 81HanoiHanoi, Vietnam 1112.6×
- 82JesiThe Marches, Italy 1062.5×
- 83Skarżysko-KamiennaŚwiętokrzyskie, Poland 1042.4×
- 84LamphunLamphun, Thailand 1022.4×
- 85ManlleuCatalonia, Spain 1002.3×
- 86KłodzkoLower Silesia, Poland 992.3×
- 87Wan ChaiWan Chai, Hong Kong 992.3×
- 88DziałdowoWarmia-Masuria, Poland 982.3×
- 89GuangzhouGuangdong, China 982.3×
- 90ManamaManama, Bahrain 972.3×
- 90Kamphaeng PhetKamphaeng Phet, Thailand 972.3×
- 92PhetchabunPhetchabun, Thailand 972.3×
- 93PhichitPhichit, Thailand 972.2×
- 94Chiang MaiChiang Mai, Thailand 962.2×
- 95DěčínÚstí nad Labem Region, Czechia 952.2×
- 96ValenciaValencia, Spain 952.2×
- 97MidrandGauteng, South Africa 942.2×
- 98Nakhon RatchasimaNakhon Ratchasima, Thailand 942.2×
- 98OpoleOpole Voivodeship, Poland 942.2×
- 100Nakhon NayokNakhon Nayok, Thailand 942.1×
- 101LleidaCatalonia, Spain 942.1×
- 102RacibórzSilesia, Poland 942.1×
- 103Mae SaiChiang Rai, Thailand 932.1×
- 104SallanchesAuvergne-Rhône-Alpes, France 922.1×
- 105BeneventoCampania, Italy 922.1×
- 106HualpénBiobio, Chile 922.1×
- 107BorgomaneroPiedmont, Italy 912.0×
- 108PesaroThe Marches, Italy 902.0×
- 109Falconara MarittimaThe Marches, Italy 892.0×
- 110ŁaskŁódź Voivodeship, Poland 892.0×
- 111PhraePhrae, Thailand 881.9×
- 111ChanthaburiChanthaburi, Thailand 881.9×
- 113DębicaSubcarpathia, Poland 881.9×
- 113Jastrzębie ZdrójSilesia, Poland 881.9×
- 115NanNan, Thailand 881.9×
- 116Sainte-Geneviève-des-BoisÎle-de-France, France 871.9×
- 117Tuen MunTuen Mun, Hong Kong 871.9×
- 118BailénAndalusia, Spain 871.9×
- 119UttaraditUttaradit, Thailand 871.9×
- 120PhayaoPhayao, Thailand 861.9×
- 120MelunÎle-de-France, France 861.9×
- 122LunévilleGrand Est, France 861.8×
- 123JohannesburgGauteng, South Africa 851.8×
- 123ParedesPorto, Portugal 851.8×
- 125CalahorraLa Rioja, Spain 851.8×
- 126Kansas CityKansas, United States 851.8×
- 127EvatonGauteng, South Africa 841.8×
- 128Chiang RaiChiang Rai, Thailand 841.8×
- 129BakersfieldCalifornia, United States 841.8×
- 130AlgiersAlgiers, Algeria 841.8×
- 131San Tung Chung HangIslands, Hong Kong 831.8×
- 131FunchalMadeira, Portugal 831.8×
- 133NodaChiba, Japan 831.7×
- 134Jelenia GóraLower Silesia, Poland 831.7×
- 135Las Palmas de Gran CanariaCanary Islands, Spain 821.7×
- 136BeauvaisHauts-de-France, France 821.7×
- 136RadomskoŁódź Voivodeship, Poland 821.7×
- 138VictoriaCentral and Western, Hong Kong 811.7×
- 138OurenseGalicia, Spain 811.7×
- 140OlivetCentre-Val de Loire, France 811.7×
- 140Vilanova i la GeltrúCatalonia, Spain 811.7×
- 140TocopillaAntofagasta, Chile 811.7×
- 140HanfordCalifornia, United States 811.7×
- 144PietermaritzburgKwaZulu-Natal, South Africa 811.7×
- 144Tin Shui WaiYuen Long, Hong Kong 811.7×
- 146FresnoCalifornia, United States 811.7×
- 146VisaliaCalifornia, United States 811.7×
- 148ThembisaGauteng, South Africa 811.7×
- 149SecundaMpumalanga, South Africa 801.7×
- 150KutnoŁódź Voivodeship, Poland 801.6×
- 151LazarevacCentral Serbia, Serbia 801.6×
- 151RengoO'Higgins Region, Chile 801.6×
- 153PhuketPhuket, Thailand 801.6×
- 154ŻywiecSilesia, Poland 791.6×
- 155BritsNorth West, South Africa 791.6×
- 155Buri RamBuriram, Thailand 791.6×
- 155VigoGalicia, Spain 791.6×
- 158SremčicaCentral Serbia, Serbia 791.6×
- 158KochaniKochani, North Macedonia 791.6×
- 158San IsidroCanary Islands, Spain 791.6×
- 161SurinSurin, Thailand 791.6×
- 161BogotáBogota D.C., Colombia 791.6×
- 161JōsōIbaraki, Japan 791.6×
- 164ColomboWestern Province, Sri Lanka 791.6×
- 164ChaiyaphumChaiyaphum, Thailand 791.6×
- 166JakartaJakarta, Indonesia 781.6×
- 166Tai PoTai Po, Hong Kong 781.6×
- 166Ciudad RealCastille-La Mancha, Spain 781.6×
- 166PilsenPlzeň Region, Czechia 781.6×
- 166RancaguaO'Higgins Region, Chile 781.6×
- 171MurciaMurcia, Spain 781.6×
- 172KazincbarcikaBorsod-Abaúj-Zemplén, Hungary 781.6×
- 173Mong KokYau Tsim Mong District, Hong Kong 771.6×
- 173SevillaAndalusia, Spain 771.6×
- 173Ludwigshafen am RheinRheinland-Pfalz, Germany 771.6×
- 173KatowiceSilesia, Poland 771.6×
- 173San CarlosÑuble, Chile 771.6×
- 178VereenigingGauteng, South Africa 771.5×
- 178SantiagoSantiago Metropolitan, Chile 771.5×
- 180CandelariaCanary Islands, Spain 771.5×
- 180TarragonaCatalonia, Spain 771.5×
- 182OviedoAsturias, Spain 771.5×
- 183BerounCentral Bohemia, Czechia 771.5×
- 184Grao de MurviedroValencia, Spain 771.5×
- 184StocktonCalifornia, United States 771.5×
- 186Sau Mau PingKwun Tong District, Hong Kong 761.5×
- 186AronaCanary Islands, Spain 761.5×
- 188ZamośćLublin, Poland 761.5×
- 189Nakhon Si ThammaratNakhon Si Thammarat, Thailand 761.5×
- 189KalasinKalasin, Thailand 761.5×
- 189GardanneProvence-Alpes-Côte d'Azur, France 761.5×
- 189KaliszGreater Poland, Poland 761.5×
- 193PančevoVojvodina, Serbia 761.5×
- 193MukdahanMukdahan, Thailand 761.5×
- 193Puente AltoSantiago Metropolitan, Chile 761.5×
- 196KehlBaden-Wurttemberg, Germany 751.5×
- 196TarbesOccitanie, France 751.5×
- 196KrakówLesser Poland, Poland 751.5×
- 196KościanGreater Poland, Poland 751.5×
- 200SasolburgFree State, South Africa 751.5×
Top 200 of 2,044 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, January 28, 2024, smogrank.com/history/2024-01-28 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.