San Pedro Bay Ports Clean Air Action Plan
CAAP Home > Air Quality > Yesterday's Data - summary of the previous day’s air quality and weather data   All data is preliminary 
What is the Air Quality Index? 
Monitored ParameterMax ValueAveraging PeriodUnitsState StandardFederal StandardAir Quality Index
O3 0.048 1-hr ppm 0.09 - -
O3 0.043 8-hr ppm 0.07 0.08 Good
PM10 35.3 24-hr µg/m3 50 150 Good
NO2 0.023 1-hr ppm 0.25 - -
CO 0.647 1-hr ppm 20.0 35.0 -
CO 0.593 8-hr ppm 9.0 9.0 Good
SO2 0.003 1-hr ppm 0.250 0.075 -
SO2 0.001 24-hr ppm 0.04 0.14 Good
Wind Speed 10.3 1-hr mph - - -
Wind Direction W 1-hr direction - - -
Temperature 58.0 1-hr deg F - - -
Relative Humidity 85.6 1-hr % - - -
Rain 0.11 1-hr in/hr - - -
Rain0.57Daily Totalin---
Rain8.94Monthly Totalin---
Rain25.93Yearly Totalin---
* Indicates reading occurred during instrument calibration


Yesterday's Data Chart
San Pedro Bay Ports Clean Air Action Plan