Daily Highs

* The Port of Los Angeles completed its upgrade of the air quality monitoring network on October 12, 2023. Click here for current operational status.
* 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
2024-05-13 O3 0.044 1 hr ppm 0.090 -- --
2024-05-14 O3 0.046 1 hr ppm 0.090 -- --
2024-05-15 O3 0.046 1 hr ppm 0.090 -- --
2024-05-16 O3 0.042 1 hr ppm 0.090 -- --
2024-05-17 O3 0.043 1 hr ppm 0.090 -- --
2024-05-18 O3 0.049 1 hr ppm 0.090 -- --
2024-05-19 O3 0.050 1 hr ppm 0.090 -- --