SmogRank / History / January 23, 2025
Most polluted cities on January 23, 2025
2,291 cities ranked by their average PM2.5 over the day; the worst was Dhaka, Bangladesh, at 244.0 µg/m³. Each city's own local calendar day.
- Central Thailand, January 202523 to 26 January 2025, 4 days50 cities117Khlong Luang
- Japan and South Korea, January 202517 to 24 January 2025, 8 days274 cities117Yeoju
- Western United States, January 202518 to 24 January 2025, 7 days19 cities61Oxnard
- Central Europe, January 202514 to 23 January 2025, 10 days383 cities252Sarajevo
- Eastern Europe, January 202522 to 23 January 2025, 2 days123 cities145Żywiec
- Pennsylvania, United States, January 202523 January 2025, 1 day9 cities35Lancaster
Bad-air episodes during January 23, 2025. All episodes.
← Dhaka 244.0 µg/m³
200 µg/m³15 WHO 24-hour guideline
- 1Dhakalow-cost sensorsDhaka Division, Bangladesh 33816.3×
- 2N'DjamenaN’Djaména, Chad 25111.7×
- 3Kampalalow-cost sensorsCentral Region, Uganda 2129.1×
- 4Lahorelow-cost sensorsPunjab, Pakistan 1978.1×
- 4Banja LukaSrpska, Bosnia and Herzegovina 1978.1×
- 6DelhiDelhi, India 1907.4×
- 7Kathmandulow-cost sensorsBagmati Province, Nepal 1816.5×
- 8ShenyangLiaoning, China 1796.4×
- 9Nong KhaemBangkok, Thailand 1766.1×
- 10MumbaiMaharashtra, India 1735.8×
- 11Bang NaBangkok, Thailand 1735.8×
- 12Bueng KumBangkok, Thailand 1715.6×
- 13Khan Na YaoBangkok, Thailand 1715.6×
- 14BaghdadBaghdad, Iraq 1705.6×
- 15Nong ChokBangkok, Thailand 1695.5×
- 16Khlong Sam WaBangkok, Thailand 1695.4×
- 18Ban Samae DamBangkok, Thailand 1685.3×
- 18Ulan BatorUlaanbaatar, Mongolia 1685.3×
- 20Lat KrabangBangkok, Thailand 1675.2×
- 21Bang KapiBangkok, Thailand 1665.2×
- 22Ban Khlong PrawetBangkok, Thailand 1645.0×
- 23BangkokBangkok, Thailand 1634.9×
- 24Yerevanlow-cost sensorsYerevan, Armenia 1634.8×
- 25Saphan SungBangkok, Thailand 1624.8×
- 26Lak SiBangkok, Thailand 1624.7×
- 27Mueang NonthaburiNonthaburi, Thailand 1624.7×
- 28HyderabadTelangana, India 1614.7×
- 29Sai MaiBangkok, Thailand 1614.6×
- 30Karachilow-cost sensorsSindh, Pakistan 1574.3×
- 31PubalGyeonggi-do, South Korea 1574.3×
- 32Islamabadlow-cost sensorsIslamabad, Pakistan 1574.3×
- 33Bielsko-BialaSilesia, Poland 1564.2×
- 34BeijingBeijing, China 1554.0×
- 35Istanbullow-cost sensorsIstanbul, Turkey 1533.9×
- 36LazarevacCentral Serbia, Serbia 1533.9×
- 36PyeongtaekGyeonggi-do, South Korea 1533.9×
- 38KinzanChungcheongnam-do, South Korea 1533.9×
- 39TongyeongGyeongsangnam-do, South Korea 1523.8×
- 40CodleaBrașov County, Romania 1523.8×
- 41ŻywiecSilesia, Poland 1523.8×
- 42PančevoVojvodina, Serbia 1523.8×
- 43LubańLower Silesia, Poland 1523.8×
- 44SmederevoCentral Serbia, Serbia 1523.8×
- 45KigaliKigali, Rwanda 1513.7×
- 45YeojuGyeonggi-do, South Korea 1513.7×
- 47Skarżysko-KamiennaŚwiętokrzyskie, Poland 1483.6×
- 47HayangGyeongsangbuk-do, South Korea 1483.6×
- 49Dimitrovgradlow-cost sensorsHaskovo, Bulgaria 1483.6×
- 49GumiGyeongsangbuk-do, South Korea 1483.6×
- 51Hongch’ŏnGangwon-do, South Korea 1463.6×
- 52KrakówLesser Poland, Poland 1453.6×
- 53Botevgradlow-cost sensorsSofia, Bulgaria 1443.5×
- 54AnseongGyeonggi-do, South Korea 1443.5×
- 55SeonghwanChungcheongnam-do, South Korea 1433.5×
- 55OkcheonNorth Chungcheong, South Korea 1433.5×
- 57YeosuJeollanam-do, South Korea 1423.5×
- 58WŏnjuGangwon-do, South Korea 1413.5×
- 59AlgiersAlgiers, Algeria 1413.5×
- 60Yangp'yŏngGyeonggi-do, South Korea 1413.4×
- 61LampangLampang, Thailand 1413.4×
- 61ChinjuGyeongsangnam-do, South Korea 1413.4×
- 63GuangzhouGuangdong, China 1403.4×
- 64HanoiHanoi, Vietnam 1403.4×
- 64Icheon-siGyeonggi-do, South Korea 1403.4×
- 66ChennaiTamil Nadu, India 1393.4×
- 67BusanBusan, South Korea 1383.4×
- 67SarajevoFederation of B&H, Bosnia and Herzegovina 1383.4×
- 69GimcheonGyeongsangbuk-do, South Korea 1373.3×
- 70Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo 1363.3×
- 71DejCluj County, Romania 1363.3×
- 72OsanGyeonggi-do, South Korea 1363.3×
- 73YeongjuGyeongsangbuk-do, South Korea 1363.3×
- 74YeongdongNorth Chungcheong, South Korea 1343.3×
- 74KimhaeGyeongsangnam-do, South Korea 1343.3×
- 76GijangBusan, South Korea 1343.3×
- 77JungpyongNorth Chungcheong, South Korea 1343.2×
- 78KutnoŁódź Voivodeship, Poland 1323.2×
- 79ZemunCentral Serbia, Serbia 1323.2×
- 80BelgradeCentral Serbia, Serbia 1313.2×
- 81GeojeGyeongsangnam-do, South Korea 1313.2×
- 82SinhyeonGyeongsangnam-do, South Korea 1313.2×
- 82PécsBaranya, Hungary 1313.2×
- 84AugustówPodlasie, Poland 1303.2×
- 85SejongSejong-si, South Korea 1293.1×
- 86DushanbeDushanbe, Tajikistan 1283.1×
- 86GoseongGyeongsangnam-do, South Korea 1283.1×
- 88Cheongju-siNorth Chungcheong, South Korea 1283.1×
- 89KimjeJeollabuk-do, South Korea 1273.1×
- 90NaesŏGyeongsangnam-do, South Korea 1273.1×
- 91KoprivnicaKoprivnica-Križevci, Croatia 1263.1×
- 92Chiayi CityTaiwan, Taiwan 1263.0×
- 93WaegwanGyeongsangbuk-do, South Korea 1263.0×
- 94ZgierzŁódź Voivodeship, Poland 1253.0×
- 95TainanTaiwan, Taiwan 1253.0×
- 95EisenGyeongsangbuk-do, South Korea 1253.0×
- 97IksanJeollabuk-do, South Korea 1243.0×
- 98KaohsiungTakao, Taiwan 1243.0×
- 99NamsaJeollabuk-do, South Korea 1233.0×
- 99YŏnmuChungcheongnam-do, South Korea 1233.0×
- 101AndongGyeongsangbuk-do, South Korea 1222.9×
- 101UngsangGyeongsangnam-do, South Korea 1222.9×
- 103JeonjuJeollabuk-do, South Korea 1212.9×
- 103HwadoGyeonggi-do, South Korea 1212.9×
- 105YangonYangon, Myanmar 1212.9×
- 106ThessaloníkiCentral Macedonia, Greece 1202.9×
- 106Gyeongsan-siGyeongsangbuk-do, South Korea 1202.9×
- 106Chinch'ŏnNorth Chungcheong, South Korea 1202.9×
- 109YangsanGyeongsangnam-do, South Korea 1202.9×
- 109WanjuJeollabuk-do, South Korea 1202.9×
- 111NangenJeollabuk-do, South Korea 1192.8×
- 112CheonanChungcheongnam-do, South Korea 1182.8×
- 113CraiovaDolj, Romania 1182.8×
- 114PohangGyeongsangbuk-do, South Korea 1182.8×
- 114HigashinozoeHyōgo, Japan 1182.8×
- 116DaeguDaegu, South Korea 1172.8×
- 116GwangyangJeollanam-do, South Korea 1172.8×
- 118XinyingTaiwan, Taiwan 1172.8×
- 118DaejeonDaejeon, South Korea 1172.8×
- 118SuwonGyeonggi-do, South Korea 1172.8×
- 118HwawŏnDaegu, South Korea 1172.8×
- 122KwangyangJeollanam-do, South Korea 1162.8×
- 122WłocławekKujawsko-Pomorskie, Poland 1162.8×
- 124KoesanNorth Chungcheong, South Korea 1162.8×
- 125SangjuGyeongsangbuk-do, South Korea 1152.8×
- 126AsanChungcheongnam-do, South Korea 1152.7×
- 127YongkangTaiwan, Taiwan 1152.7×
- 127SeosanChungcheongnam-do, South Korea 1152.7×
- 129ObrenovacCentral Serbia, Serbia 1142.7×
- 130NonsanChungcheongnam-do, South Korea 1142.7×
- 131UlsanUlsan, South Korea 1142.7×
- 132YeonilGyeongsangbuk-do, South Korea 1132.7×
- 132HongseongChungcheongnam-do, South Korea 1132.7×
- 132ChungjuNorth Chungcheong, South Korea 1132.7×
- 135Ansan-siGyeonggi-do, South Korea 1132.7×
- 136KunwiGyeongsangbuk-do, South Korea 1132.7×
- 137ChuncheonGangwon-do, South Korea 1122.7×
- 138MunsanGyeonggi-do, South Korea 1112.6×
- 139ChangwonGyeongsangnam-do, South Korea 1112.6×
- 140BuanJeollabuk-do, South Korea 1112.6×
- 141JeongeupJeollabuk-do, South Korea 1102.6×
- 142CairoCairo, Egypt 1092.6×
- 142YesanChungcheongnam-do, South Korea 1092.6×
- 144TsushimaNagasaki, Japan 1092.6×
- 145GwangjuGyeonggi-do, South Korea 1092.6×
- 145GunsanJeollabuk-do, South Korea 1092.6×
- 147Jinan-gunJeollabuk-do, South Korea 1082.6×
- 147HadongGyeongsangnam-do, South Korea 1082.6×
- 149YecheonGyeongsangbuk-do, South Korea 1082.5×
- 149BuyeoChungcheongnam-do, South Korea 1082.5×
- 149KariyaHyōgo, Japan 1082.5×
- 152Goyang-siGyeonggi-do, South Korea 1072.5×
- 153FengshanTakao, Taiwan 1072.5×
- 153MasanGwangju, South Korea 1072.5×
- 153ChangnyeongGyeongsangnam-do, South Korea 1072.5×
- 156WabuGyeonggi-do, South Korea 1072.5×
- 157ChangsuJeollabuk-do, South Korea 1062.5×
- 158Haskovolow-cost sensorsHaskovo, Bulgaria 1062.5×
- 159IaşiIași County, Romania 1062.5×
- 159Czechowice-DziedziceSilesia, Poland 1062.5×
- 161VarnaVarna, Bulgaria 1052.5×
- 162LiberpolisCounty of Osijek-Baranja, Croatia 1052.5×
- 163Kakogawachō-honmachiHyōgo, Japan 1052.5×
- 164HanfordCalifornia, United States 1052.5×
- 165ŁódźŁódź Voivodeship, Poland 1042.5×
- 166ŁaskŁódź Voivodeship, Poland 1042.5×
- 167DamyangJeollanam-do, South Korea 1042.4×
- 167Guri-siGyeonggi-do, South Korea 1042.4×
- 167ToruńKujawsko-Pomorskie, Poland 1042.4×
- 170CorcoranCalifornia, United States 1032.4×
- 171KurashikiOkayama, Japan 1032.4×
- 172Seongnam-siGyeonggi-do, South Korea 1032.4×
- 172GwangmyeongGyeonggi-do, South Korea 1032.4×
- 174OnomichiHiroshima, Japan 1022.4×
- 174AioiHyōgo, Japan 1022.4×
- 176RuseRuse, Bulgaria 1022.4×
- 176GwangjuGwangju, South Korea 1022.4×
- 178MiryangGyeongsangnam-do, South Korea 1022.4×
- 178KasaokaOkayama, Japan 1022.4×
- 178PalmaBalearic Islands, Spain 1022.4×
- 181DouliuTaiwan, Taiwan 1012.4×
- 181YeonggwangJeollanam-do, South Korea 1012.4×
- 181GdyniaPomerania, Poland 1012.4×
- 181GdańskPomerania, Poland 1012.4×
- 185AsakuchiOkayama, Japan 1012.4×
- 186ŻyrardówMazovia, Poland 1012.4×
- 187ImsilJeollabuk-do, South Korea 1002.4×
- 188Cheongsong gunGyeongsangbuk-do, South Korea 1002.4×
- 189Cluj-NapocaCluj County, Romania 1002.3×
- 189Abujalow-cost sensorsFCT, Nigeria 1002.3×
- 189Novi SadVojvodina, Serbia 1002.3×
- 192GongjuChungcheongnam-do, South Korea 992.3×
- 192FukuyamaHiroshima, Japan 992.3×
- 194Sevlievolow-cost sensorsGabrovo, Bulgaria 992.3×
- 194HimejiHyōgo, Japan 992.3×
- 194TatsunoHyōgo, Japan 992.3×
- 197EłkWarmia-Masuria, Poland 992.3×
- 197LancasterPennsylvania, United States 992.3×
- 199SeoulSeoul, South Korea 992.3×
- 200MungyeongGyeongsangbuk-do, South Korea 992.3×
Top 200 of 2,291 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
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SmogRank, most polluted cities, PM2.5, January 23, 2025, smogrank.com/history/2025-01-23 (accessed 2 Oct 2026).
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