Daily Highs

* * The Port of Los Angeles has completed the upgrade of its four station air quality monitoring network with new instrumentation and equipment. Click here for details.

* ALL DATA IS PRELIMINARY. DATA IS PRESENTED IN PACIFIC STANDARD TIME EVEN DURING DAYLIGHT SAVINGS TIME.

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DateMonitored ParameterMax ValueAveraging PeriodUnitsState StandardFederal StandardAir Quality Index
2023-11-24 O3 0.042 1 hr ppm 0.090 -- --
2023-11-25 O3 0.044 1 hr ppm 0.090 -- --
2023-11-26 O3 0.036 1 hr ppm 0.090 -- --
2023-11-27 O3 0.031 1 hr ppm 0.090 -- --
2023-11-28 O3 0.032 1 hr ppm 0.090 -- --
2023-11-29 O3 0.035 1 hr ppm 0.090 -- --
2023-11-30 O3 0.037 1 hr ppm 0.090 -- --