Use of South Coast AQMD’s PM air quality data is at the user’s discretion and should be done with caution. The intent of the monitoring data is to provide members of the public with air quality information that is supplemental to the South Coast AQMD air quality monitoring regional coverage already in place. This monitor is intended to represent PM levels around the ExxonMobil facility.  Measurements from this monitor alone cannot determine the relative contributions of regional or other source-specific origins to PM levels. Local conditions for pollutants can vary widely based on meteorological conditions and proximity to sources of PM.

Each monitor only measures PM2.5 or PM10, which are two of several routinely monitored “criteria” pollutants that the U.S. EPA links to human health impacts. The data provided on the website is based only on PM2.5 measured from this monitor, and differs from the Air Quality Index (AQI) calculation represented in the South Coast AQMD regional map: http://www3.aqmd.gov/webappl/gisaqi2/VEMap3D.aspx

AQI is a form of health index calculated using real-time data of all gaseous and particulate criteria pollutants combined with air quality forecast modeling, and is the best real-time indicator for regional air quality health impacts. Because the data from this monitor is used for a special study, data from this monitor will not be used in the calculation of real-time AQI.

South Coast AQMD provides no guarantee, either express or implied, as to the accuracy, reliability or completeness of data furnished via the website data portal, maps, or of the forecasts provided in the South Coast AQMD website. Further, South Coast AQMD shall not be liable under any circumstances for any direct, special, incidental or consequential damages with respect to any claim by any user or third party as a result of, or arising from, the use of the data, forecasts or maps.