Daily Highs

* The Coastal Boundary station was suspended in April 2020 (until further notice) due to future construction at the wharf.
* 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
2021-04-12 O3 0.051 1 hr ppm 0.090 -- --
2021-04-13 O3 0.041 1 hr ppm 0.090 -- --
2021-04-14 O3 0.047 1 hr ppm 0.090 -- --
2021-04-15 O3 0.046 1 hr ppm 0.090 -- --
2021-04-16 O3 0.043 1 hr ppm 0.090 -- --
2021-04-17 O3 0.055 1 hr ppm 0.090 -- --
2021-04-18 O3 0.028 1 hr ppm 0.090 -- --