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* 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.

Number of Charts
Time Period
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Observation

Inner Harbor - O3 (1 hr)

Select Site
Observation

Inner Harbor - PM10 (24 hr)

Select Site
Observation

Inner Harbor - PM2.5 (24 hr)