Daily Highs

* The Coastal Boundary station was suspended in April 2020 (until further notice) due to future construction at the wharf.
* The Source-Dominated station was suspended in May 2021 (until further notice).
* 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
2021-09-20 O3 0.033 1 hr ppm 0.090 -- --
2021-09-21 O3 0.059 1 hr ppm 0.090 -- --
2021-09-22 O3 0.049 1 hr ppm 0.090 -- --
2021-09-23 O3 0.032 1 hr ppm 0.090 -- --
2021-09-24 O3 0.039 1 hr ppm 0.090 -- --
2021-09-25 O3 0.039 1 hr ppm 0.090 -- --