SmogRank / Episodes / United States

California, United States, November 2024

For 1 day, on 10 November 2024, 12 cities in the United States had PM2.5 at least twice their usual for the time of year. The worst reading was Compton, California, United States: 38.3 µg/m³ on 10 November, about 2.8× its usual 13.9.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached12in 1 country
Days110 November 2024
Worst day10 November12 cities counted
Furthest above usual3.3×Inglewood

Day by day

10 November 12 cities at twice their usual or more
BakersfieldPortervilleFillmoreSanta PaulaSanta BarbaraGoletaVisaliaOxnardSimi ValleySanta ClaritaHanfordThousand OaksLancasterAgouraNipomoOrcuttArroyo GrandeLompocBurbankLa Crescenta-MontroseSanta MonicaSan Luis ObispoAtascaderoRidgecrestFresnoClovisLomitaGlendoraMaderaAnaheimVictorvilleFontanaRiversideMercedLake ElsinoreBanningHollisterTemeculaOceansideSalinasPrunedaleGilroySeasideModestoWatsonvillePowayMantecaLive OakSan DiegoSanta CruzTracyEl CajonIndioChula VistaSan JoseLivermoreSunnyvalePleasantonGaltPalo AltoRedwood CitySan LeandroConcordSummerlin SouthOaklandMartinezBerkeleyEnterpriseSpring ValleySan FranciscoRichmondVacavilleLas VegasVallejoSan RafaelHendersonBrawleyEl CentroBoulder CityCalexicoYumaJurupa ValleyImperial BeachCorcoranLos AngelesTurlockTorranceLong BeachComptonStocktonCarsonHawthorneInglewood
7 Nov8910111213
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

HawthorneHawthorne, 7 November: 9.4 µg/m³, 0.9× usualHawthorne, 8 November: 12.8 µg/m³, 1.2× usualHawthorne, 9 November: 25.5 µg/m³, 2.3× usualHawthorne, 10 November: 35.3 µg/m³, 3.2× usualHawthorne, 11 November: 22.6 µg/m³, 2.1× usualHawthorne, 12 November: 6.7 µg/m³, 0.6× usualHawthorne, 13 November: 7.0 µg/m³, 0.6× usualStocktonStockton, 7 November: 16.3 µg/m³, 1.5× usualStockton, 8 November: 17.7 µg/m³, 1.7× usualStockton, 9 November: 25.3 µg/m³, 2.4× usualStockton, 10 November: 32.6 µg/m³, 3.0× usualStockton, 11 November: 13.7 µg/m³, 1.3× usualStockton, 12 November: 14.1 µg/m³, 1.3× usualStockton, 13 November: 16.1 µg/m³, 1.5× usualComptonCompton, 7 November: 15.6 µg/m³, 1.1× usualCompton, 8 November: 13.4 µg/m³, 1.0× usualCompton, 9 November: 24.9 µg/m³, 1.8× usualCompton, 10 November: 38.3 µg/m³, 2.8× usualCompton, 11 November: 24.0 µg/m³, 1.7× usualCompton, 12 November: 10.3 µg/m³, 0.7× usualCompton, 13 November: 8.5 µg/m³, 0.6× usualImperial BeachImperial Beach, 7 November: 5.5 µg/m³, 0.4× usualImperial Beach, 8 November: 9.2 µg/m³, 0.6× usualImperial Beach, 9 November: 24.4 µg/m³, 1.6× usualImperial Beach, 10 November: 34.6 µg/m³, 2.2× usualImperial Beach, 11 November: 29.9 µg/m³, 1.9× usualImperial Beach, 12 November: 17.4 µg/m³, 1.1× usualImperial Beach, 13 November: 12.5 µg/m³, 0.8× usualCarsonCarson, 7 November: 8.3 µg/m³, 0.8× usualCarson, 8 November: 11.9 µg/m³, 1.2× usualCarson, 9 November: 22.3 µg/m³, 2.3× usualCarson, 10 November: 30.8 µg/m³, 3.1× usualCarson, 11 November: 19.8 µg/m³, 2.0× usualCarson, 12 November: 6.5 µg/m³, 0.7× usualCarson, 13 November: 7.5 µg/m³, 0.8× usualCorcoranCorcoran, 7 November: 15.5 µg/m³, 1.1× usualCorcoran, 8 November: 19.5 µg/m³, 1.4× usualCorcoran, 9 November: 23.0 µg/m³, 1.6× usualCorcoran, 10 November: 30.8 µg/m³, 2.2× usualCorcoran, 11 November: no readingCorcoran, 12 November: 9.0 µg/m³, 0.6× usualCorcoran, 13 November: 22.5 µg/m³, 1.6× usualJurupa ValleyJurupa Valley, 7 November: 3.9 µg/m³, 0.3× usualJurupa Valley, 8 November: 11.7 µg/m³, 0.8× usualJurupa Valley, 9 November: 21.5 µg/m³, 1.5× usualJurupa Valley, 10 November: 30.1 µg/m³, 2.1× usualJurupa Valley, 11 November: 23.2 µg/m³, 1.6× usualJurupa Valley, 12 November: 11.6 µg/m³, 0.8× usualJurupa Valley, 13 November: 13.1 µg/m³, 0.9× usualInglewoodInglewood, 7 November: 7.2 µg/m³, 0.8× usualInglewood, 8 November: 12.4 µg/m³, 1.4× usualInglewood, 9 November: 21.5 µg/m³, 2.4× usualInglewood, 10 November: 29.4 µg/m³, 3.3× usualInglewood, 11 November: 20.8 µg/m³, 2.4× usualInglewood, 12 November: 5.7 µg/m³, 0.6× usualInglewood, 13 November: 5.2 µg/m³, 0.6× usualTurlockTurlock, 7 November: 11.9 µg/m³, 1.1× usualTurlock, 8 November: 11.5 µg/m³, 1.1× usualTurlock, 9 November: 19.8 µg/m³, 1.9× usualTurlock, 10 November: 27.5 µg/m³, 2.6× usualTurlock, 11 November: 13.6 µg/m³, 1.3× usualTurlock, 12 November: 7.4 µg/m³, 0.7× usualTurlock, 13 November: 12.7 µg/m³, 1.2× usualLong BeachLong Beach, 7 November: 9.6 µg/m³, 0.9× usualLong Beach, 8 November: 11.5 µg/m³, 1.1× usualLong Beach, 9 November: 18.5 µg/m³, 1.8× usualLong Beach, 10 November: 27.4 µg/m³, 2.7× usualLong Beach, 11 November: 18.6 µg/m³, 1.8× usualLong Beach, 12 November: 8.4 µg/m³, 0.8× usualLong Beach, 13 November: 9.0 µg/m³, 0.9× usualTorranceTorrance, 7 November: 7.7 µg/m³, 0.8× usualTorrance, 8 November: 10.7 µg/m³, 1.1× usualTorrance, 9 November: 19.7 µg/m³, 2.1× usualTorrance, 10 November: 25.8 µg/m³, 2.7× usualTorrance, 11 November: 17.2 µg/m³, 1.8× usualTorrance, 12 November: 5.9 µg/m³, 0.6× usualTorrance, 13 November: 6.6 µg/m³, 0.7× usualLos AngelesLos Angeles, 7 November: 10.0 µg/m³, 0.9× usualLos Angeles, 8 November: 10.1 µg/m³, 0.9× usualLos Angeles, 9 November: 17.2 µg/m³, 1.6× usualLos Angeles, 10 November: 25.1 µg/m³, 2.3× usualLos Angeles, 11 November: 20.8 µg/m³, 1.9× usualLos Angeles, 12 November: 10.1 µg/m³, 0.9× usualLos Angeles, 13 November: 8.0 µg/m³, 0.7× usual7 Nov8910111213
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
InglewoodCalifornia, United States1 29.410 November8.83.3×
HawthorneCalifornia, United States1 35.310 November11.03.2×
CarsonCalifornia, United States1 30.810 November9.93.1×
StocktonCalifornia, United States1 32.610 November10.73.0×
ComptonCalifornia, United States1 38.310 November13.92.8×
TorranceCalifornia, United States1 25.810 November9.42.7×
Long BeachCalifornia, United States1 27.410 November10.32.7×
TurlockCalifornia, United States1 27.510 November10.52.6×
Los AngelesCalifornia, United States1 25.110 November11.02.3×
Imperial BeachCalifornia, United States1 34.610 November15.42.2×
CorcoranCalifornia, United States1 30.810 November14.02.2×
Jurupa ValleyCalifornia, United States1 30.110 November14.12.1×

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

Number 83 of 131 episodes in the United States since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 131.

Use this page

SmogRank, California, United States, November 2024: 12 cities with PM2.5 at twice their usual or more, 10 November 2024, smogrank.com/episodes/2024-11-california-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.