SmogRank / History / May 24, 2024
Most polluted cities on May 24, 2024
2,328 cities ranked by their average PM2.5 over the day; the worst was Coyhaique, Chile, at 239.0 µg/m³. Each city's own local calendar day.
- Southern United States and Mexico, May 202419 to 28 May 2024, 10 days32 cities74Saltillo
- South-western Chile, May 202424 to 28 May 2024, 5 days18 cities314Osorno
- Kumamoto and Fukuoka, Japan, May 202424 to 26 May 2024, 3 days16 cities35Chikugo
- South Korea and Japan, May 202421 to 25 May 2024, 5 days70 cities59Yesan
Bad-air episodes during May 24, 2024. All episodes.
← Coyhaique 239.0 µg/m³
200 µg/m³15 WHO 24-hour guideline
- 1CoyhaiqueAysén, Chile 32815.9×
- 2San CarlosÑuble, Chile 23810.9×
- 3NacimientoBiobio, Chile 1968.0×
- 4Santa Anita - Los FicusLima region, Peru 1947.8×
- 5HualpénBiobio, Chile 1917.5×
- 6CuranilahueBiobio, Chile 1846.8×
- 7ChillánÑuble, Chile 1816.6×
- 8N'DjamenaN’Djaména, Chad 1745.9×
- 9TalcahuanoBiobio, Chile 1715.6×
- 10OsornoLos Lagos Region, Chile 1705.5×
- 11Lahorelow-cost sensorsPunjab, Pakistan 1695.4×
- 12La UniónLos Ríos Region, Chile 1685.3×
- 13CoronelBiobio, Chile 1665.1×
- 14VillarricaAraucania, Chile 1665.1×
- 15Puerto VarasLos Lagos Region, Chile 1645.0×
- 16Dhakalow-cost sensorsDhaka Division, Bangladesh 1634.8×
- 17TalcaMaule Region, Chile 1624.7×
- 18Los ÁngelesBiobio, Chile 1614.7×
- 19ConcepciónBiobio, Chile 1564.2×
- 20BelmopanCayo District, Belize 1554.1×
- 21Puerto MonttLos Lagos Region, Chile 1554.1×
- 22ToméBiobio, Chile 1554.1×
- 23YesanChungcheongnam-do, South Korea 1523.8×
- 24BaghdadBaghdad, Iraq 1523.8×
- 24CuricóMaule Region, Chile 1523.8×
- 26MissionTexas, United States 1513.7×
- 27TemucoAraucania, Chile 1513.7×
- 28AsanChungcheongnam-do, South Korea 1483.6×
- 29ValdiviaLos Ríos Region, Chile 1443.5×
- 30CauquenesMaule Region, Chile 1393.4×
- 31Puerto AysénAysén, Chile 1383.4×
- 32DelhiDelhi, India 1383.4×
- 33RancaguaO'Higgins Region, Chile 1353.3×
- 34SeonghwanChungcheongnam-do, South Korea 1333.2×
- 35ChiguayanteBiobio, Chile 1333.2×
- 36EdinburgTexas, United States 1293.1×
- 37Kathmandulow-cost sensorsBagmati Province, Nepal 1293.1×
- 38HanoiHanoi, Vietnam 1283.1×
- 39San Francisco De BorjaLima region, Peru 1273.1×
- 40Chinch'ŏnNorth Chungcheong, South Korea 1263.0×
- 41TalaganteSantiago Metropolitan, Chile 1222.9×
- 42Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan 1222.9×
- 42Cheongju-siNorth Chungcheong, South Korea 1222.9×
- 44Islamabadlow-cost sensorsIslamabad, Pakistan 1202.9×
- 45Live OakTexas, United States 1192.8×
- 46CheonanChungcheongnam-do, South Korea 1172.8×
- 47TocopillaAntofagasta, Chile 1172.8×
- 48JungpyongNorth Chungcheong, South Korea 1152.7×
- 49SantiagoSantiago Metropolitan, Chile 1152.7×
- 50IksanJeollabuk-do, South Korea 1142.7×
- 51San Pedro de la PazBiobio, Chile 1102.6×
- 52CairoCairo, Egypt 1102.6×
- 53KimjeJeollabuk-do, South Korea 1092.6×
- 54Addis AbabaAddis Ababa, Ethiopia 1082.6×
- 55WanjuJeollabuk-do, South Korea 1072.5×
- 56TangjinChungcheongnam-do, South Korea 1062.5×
- 57Shakaskraallow-cost sensorsKwaZulu-Natal, South Africa 1042.5×
- 58NamsaJeollabuk-do, South Korea 1042.5×
- 58YŏnmuChungcheongnam-do, South Korea 1042.5×
- 60PyeongtaekGyeonggi-do, South Korea 1022.4×
- 61HongseongChungcheongnam-do, South Korea 1002.4×
- 61QuilpuéValparaiso, Chile 1002.4×
- 63AnseongGyeonggi-do, South Korea 992.3×
- 64MonterreyNuevo León, Mexico 992.3×
- 64IrapuatoGuanajuato, Mexico 992.3×
- 66AguascalientesAguascalientes, Mexico 992.3×
- 67BeijingBeijing, China 982.3×
- 67JeonjuJeollabuk-do, South Korea 982.3×
- 69OsanGyeonggi-do, South Korea 982.3×
- 70AustinTexas, United States 972.3×
- 70Corpus ChristiTexas, United States 972.3×
- 72BuanJeollabuk-do, South Korea 962.2×
- 73YeojuGyeonggi-do, South Korea 952.2×
- 74CallaoCallao, Peru 942.1×
- 75PubalGyeonggi-do, South Korea 942.1×
- 76QuillotaValparaiso, Chile 932.1×
- 76CelayaGuanajuato, Mexico 932.1×
- 76San AntonioTexas, United States 932.1×
- 76JeongeupJeollabuk-do, South Korea 932.1×
- 80KoesanNorth Chungcheong, South Korea 932.1×
- 80Cadereyta JiménezNuevo León, Mexico 932.1×
- 80SejongSejong-si, South Korea 932.1×
- 83GunsanJeollabuk-do, South Korea 932.1×
- 83Koch'angJeollabuk-do, South Korea 932.1×
- 85Şabāḩ as SālimMubārak al Kabīr, Kuwait 922.1×
- 86Silao de la VictoriaGuanajuato, Mexico 922.1×
- 87SuwonGyeonggi-do, South Korea 922.1×
- 88Heroica MatamorosTamaulipas, Mexico 912.0×
- 88León de los AldamaGuanajuato, Mexico 912.0×
- 90IncheonIncheon, South Korea 902.0×
- 90San Juan del RíoQuerétaro, Mexico 902.0×
- 92Karachilow-cost sensorsSindh, Pakistan 902.0×
- 93RabinalBaja Verapaz, Guatemala 892.0×
- 94Puente AltoSantiago Metropolitan, Chile 892.0×
- 95GongjuChungcheongnam-do, South Korea 892.0×
- 95San Luis de la PazGuanajuato, Mexico 892.0×
- 95SaginawTexas, United States 892.0×
- 98Guatemala CityGuatemala, Guatemala 892.0×
- 99YeonggwangJeollanam-do, South Korea 881.9×
- 99KinzanChungcheongnam-do, South Korea 881.9×
- 101Villa Poeta José Gálvez BarrenecheaLima region, Peru 881.9×
- 102Eagle PassTexas, United States 881.9×
- 103JeddahMecca Region, Saudi Arabia 881.9×
- 104Hwaseong-siGyeonggi-do, South Korea 871.9×
- 105BoryeongChungcheongnam-do, South Korea 871.9×
- 105Gimpo-siGyeonggi-do, South Korea 871.9×
- 105La SerenaCoquimbo Region, Chile 871.9×
- 108Anyang-siGyeonggi-do, South Korea 861.9×
- 109Icheon-siGyeonggi-do, South Korea 861.9×
- 109AlgiersAlgiers, Algeria 861.9×
- 109DallasTexas, United States 861.9×
- 112San MarcosTexas, United States 851.8×
- 112ShikokuchūōEhime, Japan 851.8×
- 114ImsilJeollabuk-do, South Korea 851.8×
- 115DamyangJeollanam-do, South Korea 851.8×
- 115Ganghwa-gunIncheon, South Korea 851.8×
- 117DaejeonDaejeon, South Korea 851.8×
- 117Ansan-siGyeonggi-do, South Korea 851.8×
- 117SaijōEhime, Japan 851.8×
- 117GwangmyeongGyeonggi-do, South Korea 851.8×
- 121MokpoJeollanam-do, South Korea 851.8×
- 122YeongdongNorth Chungcheong, South Korea 831.8×
- 123Bucheon-siGyeonggi-do, South Korea 821.7×
- 124SangjuGyeongsangbuk-do, South Korea 821.7×
- 124TakasakiGunma, Japan 821.7×
- 126NonsanChungcheongnam-do, South Korea 821.7×
- 127YecapixtlaMorelos, Mexico 821.7×
- 127MexicaliBaja California, Mexico 821.7×
- 129Tanushimarumachi-toyokiFukuoka, Japan 821.7×
- 129NiihamaEhime, Japan 821.7×
- 129College StationTexas, United States 821.7×
- 132ChungjuNorth Chungcheong, South Korea 811.7×
- 132TaylorTexas, United States 811.7×
- 134Fort WorthTexas, United States 811.7×
- 135NajuJeollanam-do, South Korea 801.7×
- 135CorsicanaTexas, United States 801.7×
- 137TainanTaiwan, Taiwan 801.6×
- 138MasanGwangju, South Korea 801.6×
- 138JangseongJeollanam-do, South Korea 801.6×
- 140OkcheonNorth Chungcheong, South Korea 801.6×
- 140ŌmutaFukuoka, Japan 801.6×
- 140SeogwipoJeju-do, South Korea 801.6×
- 140AraoKumamoto, Japan 801.6×
- 144WŏnjuGangwon-do, South Korea 801.6×
- 144HwasunJeollanam-do, South Korea 801.6×
- 144ChangsuJeollabuk-do, South Korea 801.6×
- 144IkedachōTokushima, Japan 801.6×
- 148ChinjuGyeongsangnam-do, South Korea 791.6×
- 148ChangwonGyeongsangnam-do, South Korea 791.6×
- 150ChocopeLa Libertad, Peru 791.6×
- 151Jeju CityJeju-do, South Korea 781.6×
- 151Abujalow-cost sensorsFCT, Nigeria 781.6×
- 153SeosanChungcheongnam-do, South Korea 781.6×
- 154SalorTashkent Region, Uzbekistan 781.6×
- 154JinchengFukien, Taiwan 781.6×
- 154NakatsuOita, Japan 781.6×
- 154Seongnam-siGyeonggi-do, South Korea 781.6×
- 154AntofagastaAntofagasta, Chile 781.6×
- 159SeoulSeoul, South Korea 781.6×
- 160ChangnyeongGyeongsangnam-do, South Korea 771.6×
- 160YeongamJeollanam-do, South Korea 771.6×
- 162FengshanTakao, Taiwan 771.5×
- 162WaegwanGyeongsangbuk-do, South Korea 771.5×
- 162ConroeTexas, United States 771.5×
- 165GwangjuGyeonggi-do, South Korea 771.5×
- 165KimhaeGyeongsangnam-do, South Korea 771.5×
- 165KurumeFukuoka, Japan 771.5×
- 165HwadoGyeonggi-do, South Korea 771.5×
- 169MuanJeollanam-do, South Korea 771.5×
- 169KasaokaOkayama, Japan 771.5×
- 169Kanzakimachi-kanzakiSaga, Japan 771.5×
- 172MumbaiMaharashtra, India 771.5×
- 172Goyang-siGyeonggi-do, South Korea 771.5×
- 172AbasoloGuanajuato, Mexico 771.5×
- 175GwangjuGwangju, South Korea 761.5×
- 175GaigeturiJeju-do, South Korea 761.5×
- 175TamanaKumamoto, Japan 761.5×
- 178KikuchiKumamoto, Japan 761.5×
- 179SagaSaga, Japan 761.5×
- 179Maebaru-chūōFukuoka, Japan 761.5×
- 181Bang NaBangkok, Thailand 761.5×
- 181ŌmuraNagasaki, Japan 761.5×
- 181UkihaFukuoka, Japan 761.5×
- 184Taesal-liChungcheongnam-do, South Korea 751.5×
- 184BuyeoChungcheongnam-do, South Korea 751.5×
- 184GimcheonGyeongsangbuk-do, South Korea 751.5×
- 184HayangGyeongsangbuk-do, South Korea 751.5×
- 184Kan’onjichōKagawa, Japan 751.5×
- 189YangsanGyeongsangnam-do, South Korea 751.5×
- 189Jinan-gunJeollabuk-do, South Korea 751.5×
- 189YamagaKumamoto, Japan 751.5×
- 189QuinteroValparaiso, Chile 751.5×
- 193MaputoMaputo City, Mozambique 751.5×
- 193GoseongGyeongsangnam-do, South Korea 751.5×
- 193GijangBusan, South Korea 751.5×
- 193TogitsuNagasaki, Japan 751.5×
- 193DentonTexas, United States 751.5×
- 198MukdahanMukdahan, Thailand 751.5×
- 198ZentsujichóKagawa, Japan 751.5×
- 198HitaOita, Japan 751.5×
Top 200 of 2,328 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 24, 2024, smogrank.com/history/2024-05-24 (accessed 3 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.