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 0.042 1-hr ppm 0.09 - -
O3 0.039 8-hr ppm 0.07 0.08 Good
PM10 25.7 24-hr µg/m3 50 150 Good
PM2.5 7.6 24-hr µg/m3 - 35 Good
NO2 0.019 1-hr ppm 0.25 - -
CO 0.142 1-hr ppm 20.0 35.0 -
CO 0.124 8-hr ppm 9.0 9.0 Good
SO2 0.003 1-hr ppm 0.250 0.075 -
SO2 0.002 24-hr ppm 0.04 0.14 Good
Wind Speed 10.1 1-hr mph - - -
Wind Direction NW 1-hr direction - - -
Temperature 71.2 1-hr deg F - - -
Relative Humidity 71.3 1-hr % - - -
Rain 0.00 1-hr in/hr - - -
Rain0.00Daily Totalin---
Rain0.26Monthly Totalin---
Rain27.16Yearly Totalin---
* Indicates reading occurred during instrument calibration


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