Investigate the problem icon
Step 1: Investigate the problem

Identify and prioritize pollution sources

Information on pollution sources and emissions comes from several types of data, including self‑reported data, continuous monitors and satellite observations. Modeling tools, such as the EPA’s MOVES model, are another powerful tool that your city can tap into to estimate or even predict pollution from specific activities, such as transportation or energy generation.

Together, these tools help cities identify where pollution is coming from, how much is released and which sources contribute most to poor air quality. They provide the insights that cities need to make the case for new policies and to focus resources where they will have the greatest impact. Check out our curated list of featured tools below to begin identifying your city’s top pollution sources.

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Source and emissions information

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Policy Technology

Diesel Retrofit Technology

"Reducing emissions from diesel engines is one of the most important air quality challenges facing the country. Even with more stringent federal heavy-duty highway and nonroad...
Model

CoST

The Control Strategy Tool (CoST), developed in 2008, is part of EPA's Emissions Modeling Framework (EMF). CoST is used to estimate emissions reductions and engineering costs...
Database Model

SMOKE

SMOKE is primarily an emissions processing system designed to create gridded, speciated, hourly emissions for input into a variety of air quality models such as CMAQ,...
Map Model Tool

Clearing the Air

The EDF Turbine Map is an advocacy-focused geospatial tool developed by the Environmental Defense Fund (EDF) in partnership with Moms Clean Air Force and EcoMadres. It...

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