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 0.017 1-hr ppm 0.09 - -
O3 0.010 8-hr ppm 0.07 0.08 Good
PM10 41.5 24-hr µg/m3 50 150 Good
PM2.5 13.6 24-hr µg/m3 - 35 Good
NO2 0.045 1-hr ppm 0.25 - -
CO 2.616 1-hr ppm 20.0 35.0 -
CO 1.625 8-hr ppm 9.0 9.0 Good
SO2 0.005 1-hr ppm 0.250 0.075 -
SO2 0.002 24-hr ppm 0.04 0.14 Good
Wind Speed 5.4 1-hr mph - - -
Wind Direction N 1-hr direction - - -
Temperature 66.1 1-hr deg F - - -
Relative Humidity 82.3 1-hr % - - -
Rain 0.11 1-hr in/hr - - -
Rain0.24Daily Totalin---
Rain2.34Monthly Totalin---
Rain33.90Yearly Totalin---
* Indicates reading occurred during instrument calibration


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