SmogRank / History / May 5, 2024
Most polluted cities on May 5, 2024
2,338 cities ranked by their average PM2.5 over the day; the worst was Chiang Rai, Thailand, at 154.0 µg/m³. Each city's own local calendar day.
Bad-air episodes during May 5, 2024. All episodes.
← Chiang Rai 154.0 µg/m³
100 µg/m³15 WHO 24-hour guideline
- 1Chiang RaiChiang Rai, Thailand 22910.3×
- 2DelhiDelhi, India 2058.7×
- 3Kathmandulow-cost sensorsBagmati Province, Nepal 1877.1×
- 4Santa Anita - Los FicusLima region, Peru 1826.7×
- 5N'DjamenaN’Djaména, Chad 1745.9×
- 6Mae SaiChiang Rai, Thailand 1725.7×
- 7Lahorelow-cost sensorsPunjab, Pakistan 1675.2×
- 8BeijingBeijing, China 1675.2×
- 9Chiang MaiChiang Mai, Thailand 1634.9×
- 10TlaquepaqueJalisco, Mexico 1614.6×
- 11PhayaoPhayao, Thailand 1594.4×
- 12HyderabadTelangana, India 1564.2×
- 13NanNan, Thailand 1554.1×
- 14La UniónLos Ríos Region, Chile 1523.8×
- 15KalasinKalasin, Thailand 1513.7×
- 16LampangLampang, Thailand 1513.7×
- 17Roi EtRoi Et, Thailand 1503.7×
- 18PhraePhrae, Thailand 1493.7×
- 19Ubon RatchathaniUbon Ratchathani, Thailand 1483.6×
- 20UttaraditUttaradit, Thailand 1483.6×
- 21Dhakalow-cost sensorsDhaka Division, Bangladesh 1423.5×
- 22MukdahanMukdahan, Thailand 1413.5×
- 23SukhothaiSukhothai, Thailand 1413.4×
- 24LamphunLamphun, Thailand 1313.2×
- 25Vientianelow-cost sensorsVientiane Prefecture, Laos 1293.1×
- 26LimaLima Province, Peru 1283.1×
- 27JakartaJakarta, Indonesia 1273.1×
- 28YasothonYasothon, Thailand 1253.0×
- 29Puerto AysénAysén, Chile 1243.0×
- 30HualpénBiobio, Chile 1212.9×
- 31Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 1202.9×
- 31PhetchabunPhetchabun, Thailand 1202.9×
- 33LoeiLoei, Thailand 1192.9×
- 34Amnat CharoenAmnat Charoen, Thailand 1192.9×
- 35Addis AbabaAddis Ababa, Ethiopia 1182.8×
- 36RatchaburiRatchaburi, Thailand 1182.8×
- 37CoyhaiqueAysén, Chile 1172.8×
- 38Sing BuriSing Buri, Thailand 1162.8×
- 39CatañoCataño, Puerto Rico 1162.8×
- 40PhichitPhichit, Thailand 1152.7×
- 41Udon ThaniUdon Thani, Thailand 1152.7×
- 41Sakon NakhonSakon Nakhon, Thailand 1152.7×
- 43Lop BuriLopburi, Thailand 1142.7×
- 44Nong KhaemBangkok, Thailand 1132.7×
- 45NacimientoBiobio, Chile 1122.7×
- 46Bang Khun ThianBangkok, Thailand 1112.6×
- 47Nong Bua LamphuNong Bua Lamphu, Thailand 1102.6×
- 48Nakhon SawanNakhon Sawan, Thailand 1092.6×
- 49Ban Samae DamBangkok, Thailand 1082.6×
- 50Suphan BuriSuphan Buri, Thailand 1082.5×
- 51ValdiviaLos Ríos Region, Chile 1072.5×
- 52Bang NaBangkok, Thailand 1072.5×
- 53BaghdadBaghdad, Iraq 1062.5×
- 53Kamphaeng PhetKamphaeng Phet, Thailand 1062.5×
- 55CelayaGuanajuato, Mexico 1062.5×
- 56SantiagoSantiago Metropolitan, Chile 1062.5×
- 57Khon KaenKhon Kaen, Thailand 1062.5×
- 58Chai NatChai Nat, Thailand 1052.5×
- 59BangkokBangkok, Thailand 1032.4×
- 59YeojuGyeonggi-do, South Korea 1032.4×
- 61Khlong Sam WaBangkok, Thailand 1032.4×
- 62PhetchaburiPhetchaburi, Thailand 1022.4×
- 63KourouGuyane, French Guiana 1022.4×
- 64Khlong LuangPathum Thani, Thailand 1012.4×
- 65Nakhon PathomNakhon Pathom, Thailand 1002.4×
- 65VillarricaAraucania, Chile 1002.4×
- 67Nakhon RatchasimaNakhon Ratchasima, Thailand 992.3×
- 68HanoiHanoi, Vietnam 992.3×
- 69Samut SakhonSamut Sakhon, Thailand 992.3×
- 69Phra PradaengSamut Prakan, Thailand 992.3×
- 69Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand 992.3×
- 72Şabāḩ as SālimMubārak al Kabīr, Kuwait 992.3×
- 73RabinalBaja Verapaz, Guatemala 982.3×
- 74Si Sa KetSi Sa Ket, Thailand 972.3×
- 75Hua HinPrachuap Khiri Khan, Thailand 972.3×
- 76PhuketPhuket, Thailand 972.2×
- 76Ban Khlong PrawetBangkok, Thailand 972.2×
- 78Mueang NonthaburiNonthaburi, Thailand 972.2×
- 78Lak SiBangkok, Thailand 972.2×
- 80SaraburiSaraburi, Thailand 962.2×
- 80Samut PrakanSamut Prakan, Thailand 962.2×
- 80CuricóMaule Region, Chile 962.2×
- 83Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa 952.2×
- 84Guatemala CityGuatemala, Guatemala 942.1×
- 85Khan Na YaoBangkok, Thailand 932.1×
- 86KolkataWest Bengal, India 932.1×
- 87Bang KapiBangkok, Thailand 932.1×
- 88Puerto VarasLos Lagos Region, Chile 932.1×
- 89Nakhon NayokNakhon Nayok, Thailand 922.1×
- 90OsornoLos Lagos Region, Chile 922.1×
- 91CauquenesMaule Region, Chile 912.1×
- 92ShakopeeMinnesota, United States 912.0×
- 93Mae SotTak, Thailand 912.0×
- 93San Francisco De BorjaLima region, Peru 912.0×
- 95Puente AltoSantiago Metropolitan, Chile 912.0×
- 95Villa Poeta José Gálvez BarrenecheaLima region, Peru 912.0×
- 97San Luis de la PazGuanajuato, Mexico 902.0×
- 98Puerto MonttLos Lagos Region, Chile 892.0×
- 99WangarattaVictoria, Australia 892.0×
- 100CuranilahueBiobio, Chile 892.0×
- 101Icheon-siGyeonggi-do, South Korea 892.0×
- 101TalaganteSantiago Metropolitan, Chile 892.0×
- 103RancaguaO'Higgins Region, Chile 881.9×
- 104CoronelBiobio, Chile 881.9×
- 105QuillotaValparaiso, Chile 871.9×
- 106San Juan del RíoQuerétaro, Mexico 871.9×
- 106Lat KrabangBangkok, Thailand 871.9×
- 108TemucoAraucania, Chile 861.9×
- 109Islamabadlow-cost sensorsIslamabad, Pakistan 851.8×
- 109Si Maha PhotPrachin Buri, Thailand 851.8×
- 111San CarlosÑuble, Chile 851.8×
- 112PardubicePardubice Region, Czechia 851.8×
- 113León de los AldamaGuanajuato, Mexico 841.8×
- 114ChocopeLa Libertad, Peru 841.8×
- 115RanongRanong province, Thailand 841.8×
- 116ChillánÑuble, Chile 841.8×
- 117CallaoCallao, Peru 841.8×
- 118Laem ChabangChon Buri, Thailand 821.7×
- 119CairoCairo, Egypt 821.7×
- 119ChaiyaphumChaiyaphum, Thailand 821.7×
- 119ShanghaiShanghai, China 821.7×
- 119QuinteroValparaiso, Chile 821.7×
- 123Bang Bo DistrictSamut Prakan, Thailand 821.7×
- 123SokchoGangwon-do, South Korea 821.7×
- 123SarajevoFederation of B&H, Bosnia and Herzegovina 821.7×
- 123GuanajuatoGuanajuato, Mexico 821.7×
- 127Ban ChangRayong, Thailand 811.7×
- 128SurinSurin, Thailand 801.6×
- 129Hongch’ŏnGangwon-do, South Korea 791.6×
- 129TalcahuanoBiobio, Chile 791.6×
- 131GuangzhouGuangdong, China 791.6×
- 131QuilpuéValparaiso, Chile 791.6×
- 133IrapuatoGuanajuato, Mexico 791.6×
- 134San ClementeIca, Peru 781.6×
- 135TaoyuanTaiwan, Taiwan 781.6×
- 136GrajewoPodlasie, Poland 771.6×
- 137LazarevacCentral Serbia, Serbia 771.5×
- 138MissionTexas, United States 761.5×
- 139ChuncheonGangwon-do, South Korea 761.5×
- 140Surat ThaniSurat Thani, Thailand 761.5×
- 141CheorwonGangwon-do, South Korea 761.5×
- 142ZhushanTaiwan, Taiwan 751.5×
- 143YangonYangon, Myanmar 751.5×
- 144JeddahMecca Region, Saudi Arabia 751.5×
- 144Kampalalow-cost sensorsCentral Region, Uganda 751.5×
- 144AntofagastaAntofagasta, Chile 751.5×
- 147PubalGyeonggi-do, South Korea 741.4×
- 147ConcónValparaiso, Chile 741.4×
- 149PattaniPattani, Thailand 741.4×
- 149TaipeiTaiwan, Taiwan 741.4×
- 151Hat YaiSongkhla, Thailand 741.4×
- 151CoquimboCoquimbo Region, Chile 741.4×
- 153SangjuGyeongsangbuk-do, South Korea 741.4×
- 154San Miguel de AllendeGuanajuato, Mexico 741.4×
- 155Ban Talat BuengChon Buri, Thailand 731.4×
- 156Viña del MarValparaiso, Chile 731.4×
- 156CopiapóAtacama, Chile 731.4×
- 156AbasoloGuanajuato, Mexico 731.4×
- 159Yangp'yŏngGyeonggi-do, South Korea 731.4×
- 160Los ÁngelesBiobio, Chile 721.4×
- 161SatunSatun, Thailand 711.3×
- 162DouliuTaiwan, Taiwan 711.3×
- 162YesanChungcheongnam-do, South Korea 711.3×
- 162WłocławekKujawsko-Pomorskie, Poland 711.3×
- 165Nakhon Si ThammaratNakhon Si Thammarat, Thailand 711.3×
- 165YuanlinTaiwan, Taiwan 711.3×
- 165WŏnjuGangwon-do, South Korea 711.3×
- 165AndongGyeongsangbuk-do, South Korea 711.3×
- 165ToruńKujawsko-Pomorskie, Poland 711.3×
- 170XizhiTaipei, Taiwan 711.3×
- 171TrangTrang, Thailand 701.3×
- 171ShulinTaipei, Taiwan 701.3×
- 171BeigangTaiwan, Taiwan 701.3×
- 171New Taipei CityTaipei, Taiwan 701.3×
- 175BelmopanCayo District, Belize 701.3×
- 176YecheonGyeongsangbuk-do, South Korea 701.3×
- 176UžiceCentral Serbia, Serbia 701.3×
- 176La SerenaCoquimbo Region, Chile 701.3×
- 179Jacobo HunterArequipa, Peru 701.3×
- 180ToméBiobio, Chile 701.3×
- 181RayongRayong, Thailand 691.3×
- 181São PauloSão Paulo, Brazil 691.3×
- 183TaibaoTaiwan, Taiwan 691.3×
- 184SmederevoCentral Serbia, Serbia 691.3×
- 184ShenyangLiaoning, China 691.3×
- 186PuliTaiwan, Taiwan 691.2×
- 186YamagataYamagata, Japan 691.2×
- 188Buri RamBuriram, Thailand 681.2×
- 188AlgiersAlgiers, Algeria 681.2×
- 190ZemunCentral Serbia, Serbia 681.2×
- 190HsinchuTaiwan, Taiwan 681.2×
- 190NagaiYamagata, Japan 681.2×
- 190TalcaMaule Region, Chile 681.2×
- 190ConcepciónBiobio, Chile 681.2×
- 195DaxiTaiwan, Taiwan 681.2×
- 196ChennaiTamil Nadu, India 681.2×
- 196NeiliTaiwan, Taiwan 681.2×
- 196EdinburgTexas, United States 681.2×
- 199AugustówPodlasie, Poland 671.2×
- 199KoesanNorth Chungcheong, South Korea 671.2×
Top 200 of 2,338 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 5, 2024, smogrank.com/history/2024-05-05 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.