Air Emissions Inventories

The National Emissions Inventory (NEI) is a detailed estimate of air emissions that include criteria pollutants and hazardous air pollutants. Learn more about the NEI

2017 National Emissions Inventory (NEI) Report is available.  The interactive tool shows emission trends and summary analysis from the NEI 2017 version 1 at the national, state, and county level.  Learn more about the 2017 NEI Report

The 2017 International Emissions Inventory Conference website with all of the training materials, presentations and posters that were presented during the conference is now available. Learn more about the Conference