Yesterday’s Data

*The Port of Los Angeles is in the process of upgrading its four air monitoring stations with new instrumentation and equipment. The procurement process is expected to be completed by the end of September 2022. The instrumentation and equipment will be installed as they are delivered, with all installation completed by the end of March 2023. Click here for details.

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

Select A Site
Monitored ParameterAveraging PeriodMax ValueUnitsState StandardFederal StandardAir Quality Index
O3 1 hr 0.034 ppm 0.090 -- --
O3 8 hr 0.029 ppm 0.070 0.070 Good
PM10 24 hr 46.3 ug/m3 50.0 150.0 Good
PM2.5 24 hr 19.0 ug/m3 -- 35.0 Moderate
NO2 1 hr 0.056 ppm 0.180 0.100 Good
CO 1 hr 1.9 ppm 20.0 35.0 Good
CO 8 hr 1.7 ppm 9.0 9.0 Good
SO2 1 hr 0.007 ppm -- 0.075 Good
SO2 24 hr 0.005 ppm 0.040 0.140 --
Wind Speed 1 hr 9.1 mph -- -- --
Wind Direction 1 hr N direction -- -- --
BC 1 hr 3.559 ug/m3 -- -- --
BC 24 hr 4.174 ug/m3 -- -- --
Temperature 1 hr 64.6° deg F -- -- --
Relative Humidity 1 hr 79.3 % -- -- --
Rain 1 hr 0.00 in -- -- --
Rain-Daily Daily Total 0.00 in -- -- --
Rain-Monthly Monthly Total 0.07 in -- -- --
Rain-Annual Annual Total -- in -- -- --