Using data from the EPA (Environmental Protection Agency) and the Colorado All Payer Claims Database (CO APCD), this analysis evaluates the impact of Wildfire and Ozone on Emergency Department (ED) visits for respiratory and circulatory diseases. The analysis provides the maximum mean for the fine particulate matter (PM2.5) concentrations (a metric for assessing air quality during wildfires), maximum 8-hour parts per million (PPM) ozone concentrations, and ED utilization and cost in select Colorado counties by month.