This report provides technical guidance to help air quality agencies develop, operate, and evaluate ozone and PM2.5 forecasting programs. This document provides: 1) Background information about ozone and PM2.5 and the weather's effect on these pollutants; 2) A list of how air quality forecasts are currently used; 3) A summary and evaluation of methods currently used to forecast ozone and PM2.5; 4) Steps to develop and operate an air quality forecasting program and 5) Information on the level of effort needed to set up and operate a forecasting program. The intended audience of this document is project managers, meteorologists, air quality analysts, and data analysts.
