SmogRank / Episodes / United States

Southern United States, July and August 2024

For 3 days, from 31 July to 2 August 2024, 56 cities in the United States and Mexico had PM2.5 at least twice their usual for the time of year. The worst reading was West Memphis, Arkansas, United States: 46.6 µg/m³ on 1 August, about 3.7× its usual 12.5.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached56in 2 countries
Days331 July to 2 August 2024
Worst day1 August36 cities counted
Furthest above usual4.5×Bartlett

Day by day

1 August 36 cities at twice their usual or more
SulphurKennerNew OrleansChalmetteHattiesburgGulfportPascagoulaPrichardFairhopeWest PensacolaDallasFerry PassMidwayMontgomeryTrussvilleDecaturHuntsvilleGadsdenClarksvilleColumbusNashvillePonca CityHendersonvilleTallahasseeAlbanyKennesawAtlantaCandler-McAfeeCookevilleWarner RobinsMaconValdostaAthensMaryvilleCiudad Benito JuárezKnoxvilleEast LakeSafety HarborLubbockSarasotaAmarilloAshevilleKingsportTulsaBaytownSpringdaleHoustonPhenix CityTexarkanaBaton RougePasadenaMissouri CityGalvestonJenksLaredoLa PorteFort WorthDentonConroeLittle RockEagle PassSaginawPort ArthurEdinburgCorsicanaChattanoogaJacksonOklahoma CityJacksonMission BendBeltonAustinEast RidgeLawtonMissionShreveportLawrencevilleColumbiaCollege StationGainesvilleMooreEdmondTaylorMcDonoughMcAlesterWest MemphisCorpus ChristiLafayetteBessemerDyersburgLive OakAdaHernandoBirminghamFort SmithHeroica MatamorosSan MarcosGeorgetownBartlett
28 Jul2930311 Aug2345
Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.

How it spread

MissionMission, 28 July: 9.1 µg/m³, 0.8× usualMission, 29 July: 12.5 µg/m³, 1.1× usualMission, 30 July: 26.3 µg/m³, 2.4× usualMission, 31 July: 37.8 µg/m³, 3.4× usualMission, 1 August: 16.3 µg/m³, 1.5× usualMission, 2 August: 6.2 µg/m³, 0.6× usualMission, 3 August: 14.9 µg/m³, 1.3× usualMission, 4 August: 20.0 µg/m³, 1.8× usualMission, 5 August: 15.2 µg/m³, 1.4× usualCorpus ChristiCorpus Christi, 28 July: 7.7 µg/m³, 0.7× usualCorpus Christi, 29 July: 12.9 µg/m³, 1.2× usualCorpus Christi, 30 July: 26.1 µg/m³, 2.4× usualCorpus Christi, 31 July: 39.7 µg/m³, 3.7× usualCorpus Christi, 1 August: 19.1 µg/m³, 1.8× usualCorpus Christi, 2 August: 6.2 µg/m³, 0.6× usualCorpus Christi, 3 August: 5.9 µg/m³, 0.5× usualCorpus Christi, 4 August: 7.4 µg/m³, 0.7× usualCorpus Christi, 5 August: 10.2 µg/m³, 0.9× usualShreveportShreveport, 28 July: 11.2 µg/m³, 0.9× usualShreveport, 29 July: 9.8 µg/m³, 0.8× usualShreveport, 30 July: 13.0 µg/m³, 1.1× usualShreveport, 31 July: 36.7 µg/m³, 3.1× usualShreveport, 1 August: 39.9 µg/m³, 3.4× usualShreveport, 2 August: 27.3 µg/m³, 2.3× usualShreveport, 3 August: 19.2 µg/m³, 1.6× usualShreveport, 4 August: 11.7 µg/m³, 1.0× usualShreveport, 5 August: 15.1 µg/m³, 1.3× usualLive OakLive Oak, 28 July: 5.6 µg/m³, 0.6× usualLive Oak, 29 July: 11.1 µg/m³, 1.2× usualLive Oak, 30 July: 17.3 µg/m³, 1.8× usualLive Oak, 31 July: 36.3 µg/m³, 3.8× usualLive Oak, 1 August: 28.4 µg/m³, 3.0× usualLive Oak, 2 August: 7.9 µg/m³, 0.8× usualLive Oak, 3 August: 5.6 µg/m³, 0.6× usualLive Oak, 4 August: 8.1 µg/m³, 0.9× usualLive Oak, 5 August: 9.7 µg/m³, 1.0× usualLaredoLaredo, 28 July: no readingLaredo, 29 July: no readingLaredo, 30 July: 16.6 µg/m³, 1.4× usualLaredo, 31 July: 36.3 µg/m³, 3.1× usualLaredo, 1 August: 23.2 µg/m³, 2.0× usualLaredo, 2 August: 2.6 µg/m³, 0.2× usualLaredo, 3 August: 4.9 µg/m³, 0.4× usualLaredo, 4 August: 8.3 µg/m³, 0.7× usualLaredo, 5 August: 11.5 µg/m³, 1.0× usualAustinAustin, 28 July: 6.1 µg/m³, 0.6× usualAustin, 29 July: 9.4 µg/m³, 0.9× usualAustin, 30 July: 15.2 µg/m³, 1.4× usualAustin, 31 July: 35.4 µg/m³, 3.3× usualAustin, 1 August: 28.7 µg/m³, 2.7× usualAustin, 2 August: 8.7 µg/m³, 0.8× usualAustin, 3 August: 7.1 µg/m³, 0.7× usualAustin, 4 August: 7.9 µg/m³, 0.7× usualAustin, 5 August: 12.7 µg/m³, 1.2× usualConroeConroe, 28 July: 8.2 µg/m³, 0.7× usualConroe, 29 July: 8.9 µg/m³, 0.8× usualConroe, 30 July: 19.9 µg/m³, 1.7× usualConroe, 31 July: 35.4 µg/m³, 3.1× usualConroe, 1 August: 29.5 µg/m³, 2.5× usualConroe, 2 August: 12.0 µg/m³, 1.0× usualConroe, 3 August: 11.0 µg/m³, 0.9× usualConroe, 4 August: 19.5 µg/m³, 1.7× usualConroe, 5 August: 23.7 µg/m³, 2.0× usualHoustonHouston, 28 July: 8.1 µg/m³, 0.6× usualHouston, 29 July: 8.4 µg/m³, 0.7× usualHouston, 30 July: 21.7 µg/m³, 1.7× usualHouston, 31 July: 34.2 µg/m³, 2.7× usualHouston, 1 August: 23.1 µg/m³, 1.8× usualHouston, 2 August: 12.1 µg/m³, 1.0× usualHouston, 3 August: 8.5 µg/m³, 0.7× usualHouston, 4 August: 13.1 µg/m³, 1.0× usualHouston, 5 August: 17.8 µg/m³, 1.4× usualEdinburgEdinburg, 28 July: 7.5 µg/m³, 0.7× usualEdinburg, 29 July: 10.8 µg/m³, 1.0× usualEdinburg, 30 July: 22.1 µg/m³, 2.1× usualEdinburg, 31 July: 34.0 µg/m³, 3.2× usualEdinburg, 1 August: 13.8 µg/m³, 1.3× usualEdinburg, 2 August: 5.8 µg/m³, 0.5× usualEdinburg, 3 August: 11.9 µg/m³, 1.1× usualEdinburg, 4 August: 16.5 µg/m³, 1.6× usualEdinburg, 5 August: 12.7 µg/m³, 1.2× usualSan MarcosSan Marcos, 28 July: 5.1 µg/m³, 0.6× usualSan Marcos, 29 July: no readingSan Marcos, 30 July: no readingSan Marcos, 31 July: 33.8 µg/m³, 4.3× usualSan Marcos, 1 August: 27.4 µg/m³, 3.5× usualSan Marcos, 2 August: 8.1 µg/m³, 1.0× usualSan Marcos, 3 August: 5.0 µg/m³, 0.6× usualSan Marcos, 4 August: 6.2 µg/m³, 0.8× usualSan Marcos, 5 August: 8.8 µg/m³, 1.1× usualCorsicanaCorsicana, 28 July: 7.4 µg/m³, 0.7× usualCorsicana, 29 July: 7.1 µg/m³, 0.7× usualCorsicana, 30 July: 11.3 µg/m³, 1.1× usualCorsicana, 31 July: 33.1 µg/m³, 3.2× usualCorsicana, 1 August: 33.0 µg/m³, 3.2× usualCorsicana, 2 August: 15.0 µg/m³, 1.4× usualCorsicana, 3 August: 8.9 µg/m³, 0.9× usualCorsicana, 4 August: 14.1 µg/m³, 1.4× usualCorsicana, 5 August: 12.2 µg/m³, 1.2× usualTaylorTaylor, 28 July: 5.7 µg/m³, 0.6× usualTaylor, 29 July: no readingTaylor, 30 July: no readingTaylor, 31 July: 32.9 µg/m³, 3.6× usualTaylor, 1 August: 27.3 µg/m³, 3.0× usualTaylor, 2 August: 8.5 µg/m³, 0.9× usualTaylor, 3 August: 8.4 µg/m³, 0.9× usualTaylor, 4 August: 7.0 µg/m³, 0.8× usualTaylor, 5 August: 10.9 µg/m³, 1.2× usualHeroica MatamorosHeroica Matamoros, 28 July: 5.9 µg/m³, 0.7× usualHeroica Matamoros, 29 July: 10.3 µg/m³, 1.3× usualHeroica Matamoros, 30 July: 24.3 µg/m³, 3.1× usualHeroica Matamoros, 31 July: 32.8 µg/m³, 4.2× usualHeroica Matamoros, 1 August: 10.5 µg/m³, 1.3× usualHeroica Matamoros, 2 August: 2.9 µg/m³, 0.4× usualHeroica Matamoros, 3 August: 11.6 µg/m³, 1.5× usualHeroica Matamoros, 4 August: 14.7 µg/m³, 1.9× usualHeroica Matamoros, 5 August: 9.6 µg/m³, 1.2× usualMission BendMission Bend, 28 July: 6.6 µg/m³, 0.7× usualMission Bend, 29 July: 7.0 µg/m³, 0.7× usualMission Bend, 30 July: 19.2 µg/m³, 2.0× usualMission Bend, 31 July: 32.6 µg/m³, 3.3× usualMission Bend, 1 August: 22.1 µg/m³, 2.3× usualMission Bend, 2 August: 9.2 µg/m³, 0.9× usualMission Bend, 3 August: 4.7 µg/m³, 0.5× usualMission Bend, 4 August: 8.7 µg/m³, 0.9× usualMission Bend, 5 August: 12.7 µg/m³, 1.3× usualPort ArthurPort Arthur, 28 July: 7.0 µg/m³, 0.7× usualPort Arthur, 29 July: 10.0 µg/m³, 1.0× usualPort Arthur, 30 July: 23.5 µg/m³, 2.3× usualPort Arthur, 31 July: 32.6 µg/m³, 3.2× usualPort Arthur, 1 August: 22.7 µg/m³, 2.2× usualPort Arthur, 2 August: 13.9 µg/m³, 1.4× usualPort Arthur, 3 August: 10.0 µg/m³, 1.0× usualPort Arthur, 4 August: 15.9 µg/m³, 1.6× usualPort Arthur, 5 August: 17.4 µg/m³, 1.7× usualPasadenaPasadena, 28 July: 5.1 µg/m³, 0.5× usualPasadena, 29 July: 6.0 µg/m³, 0.6× usualPasadena, 30 July: 18.2 µg/m³, 1.7× usualPasadena, 31 July: 32.5 µg/m³, 3.0× usualPasadena, 1 August: 21.1 µg/m³, 2.0× usualPasadena, 2 August: 13.0 µg/m³, 1.2× usualPasadena, 3 August: 6.9 µg/m³, 0.6× usualPasadena, 4 August: 11.3 µg/m³, 1.0× usualPasadena, 5 August: 14.6 µg/m³, 1.4× usualGeorgetownGeorgetown, 28 July: 5.7 µg/m³, 0.8× usualGeorgetown, 29 July: no readingGeorgetown, 30 July: no readingGeorgetown, 31 July: 32.4 µg/m³, 4.3× usualGeorgetown, 1 August: 27.7 µg/m³, 3.6× usualGeorgetown, 2 August: 7.6 µg/m³, 1.0× usualGeorgetown, 3 August: 5.6 µg/m³, 0.7× usualGeorgetown, 4 August: 6.3 µg/m³, 0.8× usualGeorgetown, 5 August: 10.6 µg/m³, 1.4× usualBeltonBelton, 28 July: 5.8 µg/m³, 0.6× usualBelton, 29 July: 9.1 µg/m³, 0.9× usualBelton, 30 July: 13.3 µg/m³, 1.3× usualBelton, 31 July: 32.2 µg/m³, 3.3× usualBelton, 1 August: 28.7 µg/m³, 2.9× usualBelton, 2 August: 11.0 µg/m³, 1.1× usualBelton, 3 August: 10.2 µg/m³, 1.0× usualBelton, 4 August: 11.2 µg/m³, 1.1× usualBelton, 5 August: 15.2 µg/m³, 1.5× usualMissouri CityMissouri City, 28 July: 8.2 µg/m³, 0.8× usualMissouri City, 29 July: 8.5 µg/m³, 0.8× usualMissouri City, 30 July: 20.5 µg/m³, 2.0× usualMissouri City, 31 July: 31.9 µg/m³, 3.0× usualMissouri City, 1 August: 21.6 µg/m³, 2.1× usualMissouri City, 2 August: 9.7 µg/m³, 0.9× usualMissouri City, 3 August: 7.5 µg/m³, 0.7× usualMissouri City, 4 August: 10.9 µg/m³, 1.0× usualMissouri City, 5 August: 13.7 µg/m³, 1.3× usualCollege StationCollege Station, 28 July: 6.2 µg/m³, 0.7× usualCollege Station, 29 July: 6.4 µg/m³, 0.7× usualCollege Station, 30 July: 14.9 µg/m³, 1.7× usualCollege Station, 31 July: 31.8 µg/m³, 3.5× usualCollege Station, 1 August: 26.1 µg/m³, 2.9× usualCollege Station, 2 August: 8.8 µg/m³, 1.0× usualCollege Station, 3 August: 7.5 µg/m³, 0.8× usualCollege Station, 4 August: 11.1 µg/m³, 1.2× usualCollege Station, 5 August: 12.9 µg/m³, 1.4× usualEagle PassEagle Pass, 28 July: 6.9 µg/m³, 0.7× usualEagle Pass, 29 July: 11.9 µg/m³, 1.2× usualEagle Pass, 30 July: 10.6 µg/m³, 1.1× usualEagle Pass, 31 July: 31.5 µg/m³, 3.2× usualEagle Pass, 1 August: 30.1 µg/m³, 3.1× usualEagle Pass, 2 August: 5.2 µg/m³, 0.5× usualEagle Pass, 3 August: 4.4 µg/m³, 0.4× usualEagle Pass, 4 August: no readingEagle Pass, 5 August: no readingSaginawSaginaw, 28 July: 7.3 µg/m³, 0.7× usualSaginaw, 29 July: 9.0 µg/m³, 0.9× usualSaginaw, 30 July: 10.6 µg/m³, 1.0× usualSaginaw, 31 July: 31.3 µg/m³, 3.0× usualSaginaw, 1 August: 33.0 µg/m³, 3.2× usualSaginaw, 2 August: 23.2 µg/m³, 2.2× usualSaginaw, 3 August: 8.7 µg/m³, 0.8× usualSaginaw, 4 August: 15.6 µg/m³, 1.5× usualSaginaw, 5 August: 16.8 µg/m³, 1.6× usualBaytownBaytown, 28 July: 6.3 µg/m³, 0.5× usualBaytown, 29 July: 8.3 µg/m³, 0.7× usualBaytown, 30 July: 19.3 µg/m³, 1.6× usualBaytown, 31 July: 31.2 µg/m³, 2.6× usualBaytown, 1 August: 21.7 µg/m³, 1.8× usualBaytown, 2 August: no readingBaytown, 3 August: no readingBaytown, 4 August: no readingBaytown, 5 August: no readingFort WorthFort Worth, 28 July: 6.7 µg/m³, 0.6× usualFort Worth, 29 July: 7.9 µg/m³, 0.7× usualFort Worth, 30 July: 9.2 µg/m³, 0.8× usualFort Worth, 31 July: 30.3 µg/m³, 2.8× usualFort Worth, 1 August: 33.3 µg/m³, 3.1× usualFort Worth, 2 August: 23.0 µg/m³, 2.1× usualFort Worth, 3 August: 9.2 µg/m³, 0.8× usualFort Worth, 4 August: 13.2 µg/m³, 1.2× usualFort Worth, 5 August: 15.0 µg/m³, 1.4× usualLafayetteLafayette, 28 July: 6.8 µg/m³, 0.9× usualLafayette, 29 July: 9.0 µg/m³, 1.1× usualLafayette, 30 July: 15.8 µg/m³, 2.0× usualLafayette, 31 July: 29.2 µg/m³, 3.7× usualLafayette, 1 August: 25.4 µg/m³, 3.2× usualLafayette, 2 August: 13.7 µg/m³, 1.7× usualLafayette, 3 August: 10.4 µg/m³, 1.3× usualLafayette, 4 August: 13.1 µg/m³, 1.7× usualLafayette, 5 August: 15.1 µg/m³, 1.9× usualLa PorteLa Porte, 28 July: 4.1 µg/m³, 0.4× usualLa Porte, 29 July: 6.0 µg/m³, 0.6× usualLa Porte, 30 July: 17.7 µg/m³, 1.9× usualLa Porte, 31 July: 29.2 µg/m³, 3.1× usualLa Porte, 1 August: 19.0 µg/m³, 2.0× usualLa Porte, 2 August: 7.9 µg/m³, 0.8× usualLa Porte, 3 August: 6.8 µg/m³, 0.7× usualLa Porte, 4 August: 8.8 µg/m³, 0.9× usualLa Porte, 5 August: 14.0 µg/m³, 1.5× usualGalvestonGalveston, 28 July: 3.1 µg/m³, 0.3× usualGalveston, 29 July: no readingGalveston, 30 July: 18.8 µg/m³, 2.0× usualGalveston, 31 July: 28.5 µg/m³, 3.0× usualGalveston, 1 August: 18.2 µg/m³, 1.9× usualGalveston, 2 August: 5.2 µg/m³, 0.6× usualGalveston, 3 August: 5.9 µg/m³, 0.6× usualGalveston, 4 August: 6.8 µg/m³, 0.7× usualGalveston, 5 August: 12.5 µg/m³, 1.3× usualTexarkanaTexarkana, 28 July: 10.7 µg/m³, 0.9× usualTexarkana, 29 July: 8.8 µg/m³, 0.7× usualTexarkana, 30 July: 11.6 µg/m³, 1.0× usualTexarkana, 31 July: 27.1 µg/m³, 2.3× usualTexarkana, 1 August: 34.0 µg/m³, 2.8× usualTexarkana, 2 August: 26.7 µg/m³, 2.2× usualTexarkana, 3 August: 15.1 µg/m³, 1.3× usualTexarkana, 4 August: 12.1 µg/m³, 1.0× usualTexarkana, 5 August: no readingBaton RougeBaton Rouge, 28 July: 6.4 µg/m³, 0.7× usualBaton Rouge, 29 July: 7.1 µg/m³, 0.7× usualBaton Rouge, 30 July: 12.5 µg/m³, 1.3× usualBaton Rouge, 31 July: 26.6 µg/m³, 2.7× usualBaton Rouge, 1 August: 27.4 µg/m³, 2.8× usualBaton Rouge, 2 August: 14.6 µg/m³, 1.5× usualBaton Rouge, 3 August: 12.9 µg/m³, 1.3× usualBaton Rouge, 4 August: 13.7 µg/m³, 1.4× usualBaton Rouge, 5 August: 13.6 µg/m³, 1.4× usualDentonDenton, 28 July: 6.3 µg/m³, 0.6× usualDenton, 29 July: 8.6 µg/m³, 0.8× usualDenton, 30 July: 9.0 µg/m³, 0.9× usualDenton, 31 July: 26.2 µg/m³, 2.5× usualDenton, 1 August: 32.8 µg/m³, 3.1× usualDenton, 2 August: 22.5 µg/m³, 2.1× usualDenton, 3 August: 9.2 µg/m³, 0.9× usualDenton, 4 August: 9.5 µg/m³, 0.9× usualDenton, 5 August: 13.9 µg/m³, 1.3× usualWest MemphisWest Memphis, 28 July: 11.4 µg/m³, 0.9× usualWest Memphis, 29 July: 10.2 µg/m³, 0.8× usualWest Memphis, 30 July: 12.0 µg/m³, 1.0× usualWest Memphis, 31 July: 19.5 µg/m³, 1.6× usualWest Memphis, 1 August: 46.6 µg/m³, 3.7× usualWest Memphis, 2 August: 26.7 µg/m³, 2.1× usualWest Memphis, 3 August: 12.9 µg/m³, 1.0× usualWest Memphis, 4 August: 18.5 µg/m³, 1.5× usualWest Memphis, 5 August: 20.5 µg/m³, 1.6× usualBartlettBartlett, 28 July: 8.0 µg/m³, 0.8× usualBartlett, 29 July: 9.7 µg/m³, 1.0× usualBartlett, 30 July: 12.2 µg/m³, 1.2× usualBartlett, 31 July: 17.2 µg/m³, 1.7× usualBartlett, 1 August: 45.4 µg/m³, 4.5× usualBartlett, 2 August: 28.8 µg/m³, 2.8× usualBartlett, 3 August: 15.0 µg/m³, 1.5× usualBartlett, 4 August: 24.5 µg/m³, 2.4× usualBartlett, 5 August: 24.0 µg/m³, 2.4× usualLittle RockLittle Rock, 28 July: 11.9 µg/m³, 1.0× usualLittle Rock, 29 July: 11.1 µg/m³, 0.9× usualLittle Rock, 30 July: 12.7 µg/m³, 1.0× usualLittle Rock, 31 July: 23.0 µg/m³, 1.9× usualLittle Rock, 1 August: 38.8 µg/m³, 3.2× usualLittle Rock, 2 August: 26.6 µg/m³, 2.2× usualLittle Rock, 3 August: 12.5 µg/m³, 1.0× usualLittle Rock, 4 August: 16.3 µg/m³, 1.3× usualLittle Rock, 5 August: 20.1 µg/m³, 1.7× usualHernandoHernando, 28 July: 7.4 µg/m³, 0.8× usualHernando, 29 July: 7.8 µg/m³, 0.9× usualHernando, 30 July: 8.3 µg/m³, 0.9× usualHernando, 31 July: 13.2 µg/m³, 1.5× usualHernando, 1 August: 36.2 µg/m³, 4.1× usualHernando, 2 August: 25.3 µg/m³, 2.8× usualHernando, 3 August: 11.9 µg/m³, 1.3× usualHernando, 4 August: 16.4 µg/m³, 1.8× usualHernando, 5 August: 16.5 µg/m³, 1.9× usualMcAlesterMcAlester, 28 July: 8.7 µg/m³, 0.9× usualMcAlester, 29 July: 7.3 µg/m³, 0.8× usualMcAlester, 30 July: 7.9 µg/m³, 0.8× usualMcAlester, 31 July: 21.2 µg/m³, 2.2× usualMcAlester, 1 August: 36.0 µg/m³, 3.7× usualMcAlester, 2 August: 21.5 µg/m³, 2.2× usualMcAlester, 3 August: 12.5 µg/m³, 1.3× usualMcAlester, 4 August: 13.2 µg/m³, 1.4× usualMcAlester, 5 August: 15.6 µg/m³, 1.6× usualMooreMoore, 28 July: 9.0 µg/m³, 0.9× usualMoore, 29 July: 7.8 µg/m³, 0.8× usualMoore, 30 July: 9.9 µg/m³, 1.0× usualMoore, 31 July: 19.4 µg/m³, 1.9× usualMoore, 1 August: 35.5 µg/m³, 3.6× usualMoore, 2 August: 23.9 µg/m³, 2.4× usualMoore, 3 August: 11.4 µg/m³, 1.1× usualMoore, 4 August: 13.6 µg/m³, 1.4× usualMoore, 5 August: 15.7 µg/m³, 1.6× usualAdaAda, 28 July: 7.9 µg/m³, 0.9× usualAda, 29 July: 6.1 µg/m³, 0.7× usualAda, 30 July: 7.1 µg/m³, 0.8× usualAda, 31 July: 20.3 µg/m³, 2.3× usualAda, 1 August: 34.7 µg/m³, 3.9× usualAda, 2 August: 30.9 µg/m³, 3.5× usualAda, 3 August: 8.3 µg/m³, 0.9× usualAda, 4 August: 10.7 µg/m³, 1.2× usualAda, 5 August: 9.2 µg/m³, 1.0× usualSpringdaleSpringdale, 28 July: 11.7 µg/m³, 0.9× usualSpringdale, 29 July: 10.4 µg/m³, 0.8× usualSpringdale, 30 July: 11.4 µg/m³, 0.9× usualSpringdale, 31 July: 20.9 µg/m³, 1.6× usualSpringdale, 1 August: 34.4 µg/m³, 2.7× usualSpringdale, 2 August: 18.2 µg/m³, 1.4× usualSpringdale, 3 August: 14.4 µg/m³, 1.1× usualSpringdale, 4 August: 13.3 µg/m³, 1.0× usualSpringdale, 5 August: 16.3 µg/m³, 1.3× usualEdmondEdmond, 28 July: 8.5 µg/m³, 0.9× usualEdmond, 29 July: 7.1 µg/m³, 0.8× usualEdmond, 30 July: 9.4 µg/m³, 1.0× usualEdmond, 31 July: 17.7 µg/m³, 1.9× usualEdmond, 1 August: 34.3 µg/m³, 3.6× usualEdmond, 2 August: 20.7 µg/m³, 2.2× usualEdmond, 3 August: 9.9 µg/m³, 1.1× usualEdmond, 4 August: 11.6 µg/m³, 1.2× usualEdmond, 5 August: 13.2 µg/m³, 1.4× usualFort SmithFort Smith, 28 July: 4.8 µg/m³, 0.6× usualFort Smith, 29 July: 4.3 µg/m³, 0.5× usualFort Smith, 30 July: 5.0 µg/m³, 0.6× usualFort Smith, 31 July: 18.0 µg/m³, 2.3× usualFort Smith, 1 August: 33.9 µg/m³, 4.2× usualFort Smith, 2 August: 16.0 µg/m³, 2.0× usualFort Smith, 3 August: 5.8 µg/m³, 0.7× usualFort Smith, 4 August: 7.8 µg/m³, 1.0× usualFort Smith, 5 August: 12.9 µg/m³, 1.6× usualOklahoma CityOklahoma City, 28 July: 8.3 µg/m³, 0.8× usualOklahoma City, 29 July: 7.5 µg/m³, 0.8× usualOklahoma City, 30 July: 9.6 µg/m³, 1.0× usualOklahoma City, 31 July: 17.4 µg/m³, 1.8× usualOklahoma City, 1 August: 32.5 µg/m³, 3.3× usualOklahoma City, 2 August: 20.4 µg/m³, 2.1× usualOklahoma City, 3 August: 11.7 µg/m³, 1.2× usualOklahoma City, 4 August: 13.3 µg/m³, 1.3× usualOklahoma City, 5 August: 14.4 µg/m³, 1.5× usualJacksonJackson, 28 July: 5.2 µg/m³, 0.5× usualJackson, 29 July: 5.6 µg/m³, 0.6× usualJackson, 30 July: 8.2 µg/m³, 0.9× usualJackson, 31 July: 19.2 µg/m³, 2.0× usualJackson, 1 August: 31.6 µg/m³, 3.3× usualJackson, 2 August: 22.6 µg/m³, 2.4× usualJackson, 3 August: 12.2 µg/m³, 1.3× usualJackson, 4 August: 8.2 µg/m³, 0.9× usualJackson, 5 August: 9.9 µg/m³, 1.0× usualDyersburgDyersburg, 28 July: 5.0 µg/m³, 0.6× usualDyersburg, 29 July: 6.6 µg/m³, 0.8× usualDyersburg, 30 July: no readingDyersburg, 31 July: 10.9 µg/m³, 1.4× usualDyersburg, 1 August: 30.6 µg/m³, 3.8× usualDyersburg, 2 August: 15.4 µg/m³, 1.9× usualDyersburg, 3 August: 9.9 µg/m³, 1.2× usualDyersburg, 4 August: 11.9 µg/m³, 1.5× usualDyersburg, 5 August: 14.3 µg/m³, 1.8× usualLawtonLawton, 28 July: 7.2 µg/m³, 0.8× usualLawton, 29 July: 5.6 µg/m³, 0.6× usualLawton, 30 July: 3.1 µg/m³, 0.4× usualLawton, 31 July: 11.9 µg/m³, 1.4× usualLawton, 1 August: 29.5 µg/m³, 3.4× usualLawton, 2 August: 21.1 µg/m³, 2.4× usualLawton, 3 August: 9.9 µg/m³, 1.1× usualLawton, 4 August: 10.7 µg/m³, 1.2× usualLawton, 5 August: no readingJenksJenks, 28 July: 8.8 µg/m³, 0.9× usualJenks, 29 July: 6.7 µg/m³, 0.7× usualJenks, 30 July: 8.2 µg/m³, 0.9× usualJenks, 31 July: 15.6 µg/m³, 1.6× usualJenks, 1 August: 29.5 µg/m³, 3.1× usualJenks, 2 August: 13.7 µg/m³, 1.4× usualJenks, 3 August: 9.7 µg/m³, 1.0× usualJenks, 4 August: 10.7 µg/m³, 1.1× usualJenks, 5 August: 12.1 µg/m³, 1.3× usualJacksonJackson, 28 July: 4.6 µg/m³, 0.5× usualJackson, 29 July: 5.2 µg/m³, 0.6× usualJackson, 30 July: 8.7 µg/m³, 1.0× usualJackson, 31 July: 10.2 µg/m³, 1.1× usualJackson, 1 August: 29.0 µg/m³, 3.3× usualJackson, 2 August: 19.1 µg/m³, 2.1× usualJackson, 3 August: 9.2 µg/m³, 1.0× usualJackson, 4 August: 14.1 µg/m³, 1.6× usualJackson, 5 August: 15.6 µg/m³, 1.8× usualBirminghamBirmingham, 28 July: no readingBirmingham, 29 July: no readingBirmingham, 30 July: 12.0 µg/m³, 1.3× usualBirmingham, 31 July: 15.7 µg/m³, 1.7× usualBirmingham, 1 August: 28.7 µg/m³, 3.1× usualBirmingham, 2 August: 37.5 µg/m³, 4.1× usualBirmingham, 3 August: 14.5 µg/m³, 1.6× usualBirmingham, 4 August: 15.0 µg/m³, 1.6× usualBirmingham, 5 August: 11.5 µg/m³, 1.3× usualTulsaTulsa, 28 July: 9.9 µg/m³, 0.9× usualTulsa, 29 July: 7.5 µg/m³, 0.7× usualTulsa, 30 July: 9.4 µg/m³, 0.9× usualTulsa, 31 July: 17.2 µg/m³, 1.6× usualTulsa, 1 August: 28.0 µg/m³, 2.5× usualTulsa, 2 August: 12.4 µg/m³, 1.1× usualTulsa, 3 August: 10.3 µg/m³, 0.9× usualTulsa, 4 August: 12.3 µg/m³, 1.1× usualTulsa, 5 August: 14.9 µg/m³, 1.4× usualColumbiaColumbia, 28 July: 6.4 µg/m³, 0.9× usualColumbia, 29 July: 5.4 µg/m³, 0.8× usualColumbia, 30 July: 7.5 µg/m³, 1.0× usualColumbia, 31 July: 8.0 µg/m³, 1.1× usualColumbia, 1 August: 25.0 µg/m³, 3.5× usualColumbia, 2 August: 21.7 µg/m³, 3.0× usualColumbia, 3 August: 8.3 µg/m³, 1.2× usualColumbia, 4 August: 12.3 µg/m³, 1.7× usualColumbia, 5 August: 11.4 µg/m³, 1.6× usualGainesvilleGainesville, 28 July: 12.5 µg/m³, 1.5× usualGainesville, 29 July: 9.1 µg/m³, 1.1× usualGainesville, 30 July: 10.4 µg/m³, 1.2× usualGainesville, 31 July: 11.2 µg/m³, 1.3× usualGainesville, 1 August: 12.4 µg/m³, 1.5× usualGainesville, 2 August: 30.6 µg/m³, 3.6× usualGainesville, 3 August: 16.4 µg/m³, 1.9× usualGainesville, 4 August: 14.1 µg/m³, 1.7× usualGainesville, 5 August: 7.9 µg/m³, 0.9× usualEast RidgeEast Ridge, 28 July: 11.8 µg/m³, 1.4× usualEast Ridge, 29 July: 5.5 µg/m³, 0.6× usualEast Ridge, 30 July: 7.5 µg/m³, 0.9× usualEast Ridge, 31 July: 8.2 µg/m³, 1.0× usualEast Ridge, 1 August: 16.6 µg/m³, 2.0× usualEast Ridge, 2 August: 28.9 µg/m³, 3.4× usualEast Ridge, 3 August: 11.4 µg/m³, 1.3× usualEast Ridge, 4 August: 9.7 µg/m³, 1.1× usualEast Ridge, 5 August: 11.0 µg/m³, 1.3× usualChattanoogaChattanooga, 28 July: 11.2 µg/m³, 1.3× usualChattanooga, 29 July: 5.0 µg/m³, 0.6× usualChattanooga, 30 July: 6.8 µg/m³, 0.8× usualChattanooga, 31 July: 8.1 µg/m³, 0.9× usualChattanooga, 1 August: 16.5 µg/m³, 1.9× usualChattanooga, 2 August: 28.3 µg/m³, 3.3× usualChattanooga, 3 August: 8.8 µg/m³, 1.0× usualChattanooga, 4 August: 9.6 µg/m³, 1.1× usualChattanooga, 5 August: 10.2 µg/m³, 1.2× usualBessemerBessemer, 28 July: 5.6 µg/m³, 0.8× usualBessemer, 29 July: 4.5 µg/m³, 0.6× usualBessemer, 30 July: 7.2 µg/m³, 1.0× usualBessemer, 31 July: 9.7 µg/m³, 1.3× usualBessemer, 1 August: 20.8 µg/m³, 2.8× usualBessemer, 2 August: 27.7 µg/m³, 3.8× usualBessemer, 3 August: 9.1 µg/m³, 1.2× usualBessemer, 4 August: 10.6 µg/m³, 1.5× usualBessemer, 5 August: 7.6 µg/m³, 1.0× usualMcDonoughMcDonough, 28 July: 9.0 µg/m³, 1.2× usualMcDonough, 29 July: 4.5 µg/m³, 0.6× usualMcDonough, 30 July: 5.7 µg/m³, 0.8× usualMcDonough, 31 July: 5.4 µg/m³, 0.7× usualMcDonough, 1 August: 9.2 µg/m³, 1.2× usualMcDonough, 2 August: 27.4 µg/m³, 3.7× usualMcDonough, 3 August: 16.7 µg/m³, 2.2× usualMcDonough, 4 August: 9.7 µg/m³, 1.3× usualMcDonough, 5 August: 2.7 µg/m³, 0.4× usualLawrencevilleLawrenceville, 28 July: 13.0 µg/m³, 1.7× usualLawrenceville, 29 July: 7.6 µg/m³, 1.0× usualLawrenceville, 30 July: 9.3 µg/m³, 1.2× usualLawrenceville, 31 July: 9.5 µg/m³, 1.3× usualLawrenceville, 1 August: 11.0 µg/m³, 1.5× usualLawrenceville, 2 August: 26.1 µg/m³, 3.5× usualLawrenceville, 3 August: 17.7 µg/m³, 2.4× usualLawrenceville, 4 August: 14.2 µg/m³, 1.9× usualLawrenceville, 5 August: 5.4 µg/m³, 0.7× usualPhenix CityPhenix City, 28 July: 6.3 µg/m³, 0.7× usualPhenix City, 29 July: 5.4 µg/m³, 0.6× usualPhenix City, 30 July: 6.3 µg/m³, 0.7× usualPhenix City, 31 July: 7.2 µg/m³, 0.8× usualPhenix City, 1 August: 9.0 µg/m³, 1.0× usualPhenix City, 2 August: 25.4 µg/m³, 2.8× usualPhenix City, 3 August: 14.3 µg/m³, 1.6× usualPhenix City, 4 August: 7.2 µg/m³, 0.8× usualPhenix City, 5 August: 3.7 µg/m³, 0.4× usual28 Jul2930311 Aug2345
Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
BartlettTennessee, United States2 45.41 August10.24.5×
San MarcosTexas, United States2 33.831 July7.94.3×
GeorgetownTexas, United States2 32.431 July7.64.3×
Fort SmithArkansas, United States1 33.91 August8.04.2×
Heroica MatamorosTamaulipas, Mexico1 32.831 July7.94.2×
BirminghamAlabama, United States2 37.52 August9.24.1×
HernandoMississippi, United States2 36.21 August8.94.1×
AdaOklahoma, United States2 34.71 August8.93.9×
DyersburgTennessee, United States1 30.61 August8.03.8×
Live OakTexas, United States2 36.331 July9.53.8×
BessemerAlabama, United States1 27.72 August7.33.8×
West MemphisArkansas, United States2 46.61 August12.53.7×
McAlesterOklahoma, United States1 36.01 August9.73.7×
LafayetteLouisiana, United States2 29.231 July7.93.7×
Corpus ChristiTexas, United States1 39.731 July10.83.7×
McDonoughGeorgia, United States1 27.42 August7.53.7×
EdmondOklahoma, United States1 34.31 August9.43.6×
TaylorTexas, United States2 32.931 July9.13.6×
GainesvilleGeorgia, United States1 30.62 August8.53.6×
MooreOklahoma, United States1 35.51 August10.03.6×
College StationTexas, United States2 31.831 July9.03.5×
LawrencevilleGeorgia, United States1 26.12 August7.53.5×
ColumbiaTennessee, United States1 25.01 August7.23.5×
MissionTexas, United States1 37.831 July11.13.4×
East RidgeTennessee, United States1 28.92 August8.53.4×
LawtonOklahoma, United States1 29.51 August8.73.4×
ShreveportLouisiana, United States3 39.91 August11.83.4×
Mission BendTexas, United States1 32.631 July9.83.3×
JacksonMississippi, United States1 31.61 August9.63.3×
Oklahoma CityOklahoma, United States1 32.51 August9.93.3×
AustinTexas, United States2 35.431 July10.83.3×
JacksonTennessee, United States1 29.01 August8.93.3×
ChattanoogaTennessee, United States1 28.32 August8.73.3×
BeltonTexas, United States2 32.231 July9.93.3×
Port ArthurTexas, United States1 32.631 July10.13.2×
Eagle PassTexas, United States2 31.531 July9.83.2×
EdinburgTexas, United States1 34.031 July10.63.2×
Little RockArkansas, United States2 38.81 August12.13.2×
CorsicanaTexas, United States2 33.131 July10.43.2×
SaginawTexas, United States2 33.01 August10.43.2×
DentonTexas, United States2 32.81 August10.53.1×
La PorteTexas, United States1 29.231 July9.43.1×
LaredoTexas, United States1 36.331 July11.73.1×
JenksOklahoma, United States1 29.51 August9.63.1×
Fort WorthTexas, United States2 33.31 August10.93.1×
ConroeTexas, United States2 35.431 July11.63.1×
Missouri CityTexas, United States1 31.931 July10.53.0×
GalvestonTexas, United States1 28.531 July9.43.0×
PasadenaTexas, United States1 32.531 July10.83.0×
TexarkanaTexas, United States3 34.01 August12.02.8×
Baton RougeLouisiana, United States2 27.41 August9.72.8×
Phenix CityAlabama, United States1 25.42 August9.02.8×
HoustonTexas, United States1 34.231 July12.62.7×
SpringdaleArkansas, United States1 34.41 August12.72.7×
BaytownTexas, United States1 31.231 July11.82.6×
TulsaOklahoma, United States1 28.01 August11.02.5×

Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.

Against other episodes in the United States and Mexico

Number 19 of 142 episodes in the United States and Mexico since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 142.

Use this page

SmogRank, Southern United States, July and August 2024: 56 cities with PM2.5 at twice their usual or more, 31 July to 2 August 2024, smogrank.com/episodes/2024-07-southern-united-states (accessed 3 October 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes. Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.