SmogRank / History / May 14, 2024
Most polluted cities on May 14, 2024
2,339 cities ranked by their average PM2.5 over the day; the worst was N'Djamena, Chad, at 212.0 µg/m³. Each city's own local calendar day.
- South-western Chile, May 202414 to 19 May 2024, 6 days19 cities275Osorno
- Northern United States, May 202412 to 14 May 2024, 3 days25 cities62Rochester
Bad-air episodes during May 14, 2024. All episodes.
← N'Djamena 212.0 µg/m³
200 µg/m³15 WHO 24-hour guideline
- 1N'DjamenaN’Djaména, Chad 28714.1×
- 2CoyhaiqueAysén, Chile 28013.7×
- 3NacimientoBiobio, Chile 2028.4×
- 4TemucoAraucania, Chile 1967.9×
- 5San CarlosÑuble, Chile 1917.5×
- 6Lahorelow-cost sensorsPunjab, Pakistan 1897.3×
- 7CoronelBiobio, Chile 1867.0×
- 8La UniónLos Ríos Region, Chile 1846.9×
- 9ChillánÑuble, Chile 1846.8×
- 10CuranilahueBiobio, Chile 1836.7×
- 11DelhiDelhi, India 1816.6×
- 12HualpénBiobio, Chile 1776.2×
- 13Santa Anita - Los FicusLima region, Peru 1776.2×
- 14Puerto MonttLos Lagos Region, Chile 1735.8×
- 15OsornoLos Lagos Region, Chile 1725.7×
- 16CuricóMaule Region, Chile 1655.0×
- 17Puerto VarasLos Lagos Region, Chile 1645.0×
- 18VillarricaAraucania, Chile 1644.9×
- 19ValdiviaLos Ríos Region, Chile 1624.7×
- 20MumbaiMaharashtra, India 1614.7×
- 21JakartaJakarta, Indonesia 1604.6×
- 22CatañoCataño, Puerto Rico 1554.1×
- 23TalcaMaule Region, Chile 1554.1×
- 24Dhakalow-cost sensorsDhaka Division, Bangladesh 1544.0×
- 25BelmopanCayo District, Belize 1533.9×
- 26Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 1493.7×
- 27RengoO'Higgins Region, Chile 1483.6×
- 28TalcahuanoBiobio, Chile 1413.4×
- 29ToméBiobio, Chile 1383.4×
- 29Puerto AysénAysén, Chile 1383.4×
- 31SantiagoSantiago Metropolitan, Chile 1363.3×
- 32RancaguaO'Higgins Region, Chile 1353.3×
- 33CauquenesMaule Region, Chile 1343.3×
- 34Tula de AllendeHidalgo, Mexico 1343.3×
- 35TopekaKansas, United States 1283.1×
- 36Fort McMurrayAlberta, Canada 1273.1×
- 37ConcepciónBiobio, Chile 1263.0×
- 38ChiguayanteBiobio, Chile 1253.0×
- 39QuillotaValparaiso, Chile 1243.0×
- 40Los ÁngelesBiobio, Chile 1222.9×
- 41CelayaGuanajuato, Mexico 1222.9×
- 42Puente AltoSantiago Metropolitan, Chile 1202.9×
- 43HanoiHanoi, Vietnam 1172.8×
- 44Abujalow-cost sensorsFCT, Nigeria 1162.8×
- 45RangioraCanterbury, New Zealand 1142.7×
- 46AcerraCampania, Italy 1132.7×
- 47TlaquepaqueJalisco, Mexico 1122.7×
- 48AshgabatAshgabat, Turkmenistan 1122.7×
- 49Kathmandulow-cost sensorsBagmati Province, Nepal 1102.6×
- 50MéridaYucatán, Mexico 1082.5×
- 51Mae SaiChiang Rai, Thailand 1072.5×
- 52San Pedro de la PazBiobio, Chile 1062.5×
- 53AguascalientesAguascalientes, Mexico 1062.5×
- 54Islamabadlow-cost sensorsIslamabad, Pakistan 1042.5×
- 55LimaLima Province, Peru 1022.4×
- 56QuilpuéValparaiso, Chile 1022.4×
- 57Ponca CityOklahoma, United States 1012.4×
- 58San Juan del RíoQuerétaro, Mexico 992.3×
- 59QuinteroValparaiso, Chile 972.3×
- 60BaghdadBaghdad, Iraq 952.2×
- 61BeijingBeijing, China 942.1×
- 62San Luis de la PazGuanajuato, Mexico 942.1×
- 63DerbyKansas, United States 932.1×
- 64La SerenaCoquimbo Region, Chile 912.1×
- 65Bang NaBangkok, Thailand 902.0×
- 66CairoCairo, Egypt 892.0×
- 67Viña del MarValparaiso, Chile 881.9×
- 68MonterreyNuevo León, Mexico 881.9×
- 69IrapuatoGuanajuato, Mexico 871.9×
- 70Jacobo HunterArequipa, Peru 871.9×
- 71HyderabadTelangana, India 871.9×
- 72MukdahanMukdahan, Thailand 861.9×
- 72OmahaNebraska, United States 861.9×
- 74BellevueNebraska, United States 851.8×
- 75GuangzhouGuangdong, China 851.8×
- 75ConcónValparaiso, Chile 851.8×
- 77San Francisco De BorjaLima region, Peru 851.8×
- 78Ubon RatchathaniUbon Ratchathani, Thailand 851.8×
- 79NanNan, Thailand 841.8×
- 80ZhushanTaiwan, Taiwan 841.8×
- 80ShanghaiShanghai, China 841.8×
- 82Nong KhaemBangkok, Thailand 831.8×
- 82San Miguel de AllendeGuanajuato, Mexico 831.8×
- 84Khlong Sam WaBangkok, Thailand 831.8×
- 85SalamancaGuanajuato, Mexico 831.7×
- 86AbasoloGuanajuato, Mexico 821.7×
- 87Addis AbabaAddis Ababa, Ethiopia 821.7×
- 87KolkataWest Bengal, India 821.7×
- 89Kansas CityKansas, United States 821.7×
- 90Şabāḩ as SālimMubārak al Kabīr, Kuwait 821.7×
- 91Ban Samae DamBangkok, Thailand 811.7×
- 92SarajevoFederation of B&H, Bosnia and Herzegovina 801.7×
- 92Khan Na YaoBangkok, Thailand 801.7×
- 94OlatheKansas, United States 801.6×
- 94JenksOklahoma, United States 801.6×
- 96León de los AldamaGuanajuato, Mexico 791.6×
- 97Karachilow-cost sensorsSindh, Pakistan 791.6×
- 97PuliTaiwan, Taiwan 791.6×
- 97TulsaOklahoma, United States 791.6×
- 100KaohsiungTakao, Taiwan 781.6×
- 100LincolnNebraska, United States 781.6×
- 102UžiceCentral Serbia, Serbia 781.6×
- 102TocopillaAntofagasta, Chile 781.6×
- 102Saint JosephMissouri, United States 781.6×
- 105MooreOklahoma, United States 771.6×
- 106Lak SiBangkok, Thailand 771.5×
- 107Oklahoma CityOklahoma, United States 771.5×
- 108CopiapóAtacama, Chile 761.5×
- 109AntofagastaAntofagasta, Chile 761.5×
- 110EdinburghScotland, United Kingdom 761.5×
- 111Nakhon RatchasimaNakhon Ratchasima, Thailand 761.5×
- 112YeojuGyeonggi-do, South Korea 751.5×
- 112San ClementeIca, Peru 751.5×
- 114GuanajuatoGuanajuato, Mexico 751.5×
- 114EdmondOklahoma, United States 751.5×
- 114RochesterMinnesota, United States 751.5×
- 117Roi EtRoi Et, Thailand 751.5×
- 118KanchanaburiKanchanaburi, Thailand 741.4×
- 119Mueang NonthaburiNonthaburi, Thailand 741.4×
- 119SeonghwanChungcheongnam-do, South Korea 741.4×
- 121Phra PradaengSamut Prakan, Thailand 741.4×
- 121YongkangTaiwan, Taiwan 741.4×
- 121AnkenyIowa, United States 741.4×
- 121WaterlooIowa, United States 741.4×
- 121HamiltonOntario, Canada 741.4×
- 126BangkokBangkok, Thailand 731.4×
- 127TainanTaiwan, Taiwan 731.4×
- 128AntananarivoAnalamanga, Madagascar 731.4×
- 128YeongjuGyeongsangbuk-do, South Korea 731.4×
- 130DouliuTaiwan, Taiwan 721.4×
- 130PubalGyeonggi-do, South Korea 721.4×
- 132PohangGyeongsangbuk-do, South Korea 721.4×
- 132Sai MaiBangkok, Thailand 721.4×
- 134Vientianelow-cost sensorsVientiane Prefecture, Laos 721.4×
- 135HayangGyeongsangbuk-do, South Korea 721.3×
- 135CallaoCallao, Peru 721.3×
- 137RatchaburiRatchaburi, Thailand 711.3×
- 137Chiayi CityTaiwan, Taiwan 711.3×
- 137WaegwanGyeongsangbuk-do, South Korea 711.3×
- 140ValjevoCentral Serbia, Serbia 711.3×
- 141Ban Khlong PrawetBangkok, Thailand 711.3×
- 142Chiang RaiChiang Rai, Thailand 701.3×
- 142Khlong LuangPathum Thani, Thailand 701.3×
- 142AlessandriaPiedmont, Italy 701.3×
- 145Bang KapiBangkok, Thailand 701.3×
- 145Des MoinesIowa, United States 701.3×
- 147Si Sa KetSi Sa Ket, Thailand 701.3×
- 147Guatemala CityGuatemala, Guatemala 701.3×
- 149PhayaoPhayao, Thailand 701.3×
- 149Si Maha PhotPrachin Buri, Thailand 701.3×
- 149FengshanTakao, Taiwan 701.3×
- 149YeonggwangJeollanam-do, South Korea 701.3×
- 149VigevanoLombardy, Italy 701.3×
- 154Nakhon NayokNakhon Nayok, Thailand 701.3×
- 154KalasinKalasin, Thailand 701.3×
- 154Icheon-siGyeonggi-do, South Korea 701.3×
- 157IksanJeollabuk-do, South Korea 691.3×
- 157Grand RapidsMichigan, United States 691.3×
- 159BeigangTaiwan, Taiwan 691.3×
- 159PyeongtaekGyeonggi-do, South Korea 691.3×
- 159TimaruCanterbury, New Zealand 691.3×
- 162KinzanChungcheongnam-do, South Korea 691.2×
- 162NorwichEngland, United Kingdom 691.2×
- 162AshburtonCanterbury, New Zealand 691.2×
- 165Bang Bo DistrictSamut Prakan, Thailand 691.2×
- 166Samut PrakanSamut Prakan, Thailand 691.2×
- 166GwangyangJeollanam-do, South Korea 691.2×
- 168CártamaAndalusia, Spain 681.2×
- 168RabinalBaja Verapaz, Guatemala 681.2×
- 170ChaozhouTaiwan, Taiwan 681.2×
- 170SangjuGyeongsangbuk-do, South Korea 681.2×
- 170YeosuJeollanam-do, South Korea 681.2×
- 170Kingston upon HullEngland, United Kingdom 681.2×
- 170Prince AlbertSaskatchewan, Canada 681.2×
- 175AricaArica y Parinacota Region, Chile 681.2×
- 175McAlesterOklahoma, United States 681.2×
- 177UlsanUlsan, South Korea 681.2×
- 177KoesanNorth Chungcheong, South Korea 681.2×
- 177HwawŏnDaegu, South Korea 681.2×
- 177ChocopeLa Libertad, Peru 681.2×
- 181ShulinTaipei, Taiwan 681.2×
- 181YeonilGyeongsangbuk-do, South Korea 681.2×
- 181NagoOkinawa, Japan 681.2×
- 181MilanLombardy, Italy 681.2×
- 181BrantfordOntario, Canada 681.2×
- 186Amnat CharoenAmnat Charoen, Thailand 671.2×
- 187ErlunTaiwan, Taiwan 671.2×
- 188ErlinTaiwan, Taiwan 671.2×
- 188EisenGyeongsangbuk-do, South Korea 671.2×
- 188KagoshimaKagoshima, Japan 671.2×
- 191SatunSatun, Thailand 671.2×
- 191Quezon Citylow-cost sensorsNational Capital Region, Philippines 671.2×
- 191WŏnjuGangwon-do, South Korea 671.2×
- 191NaesŏGyeongsangnam-do, South Korea 671.2×
- 195ŌzuKumamoto, Japan 661.2×
- 195ChangnyeongGyeongsangnam-do, South Korea 661.2×
- 197AndongGyeongsangbuk-do, South Korea 661.2×
- 197Laem ChabangChon Buri, Thailand 661.2×
- 197SaskatoonSaskatchewan, Canada 661.2×
- 200Hat YaiSongkhla, Thailand 661.1×
Top 200 of 2,339 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, May 14, 2024, smogrank.com/history/2024-05-14 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.