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.

Source and emissions

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Map Tool

WebFIRE

WebFIRE is EPA’s online emissions factor repository, retrieval, and development tool.
Database

Oklahoma NEI Dashboard

Interactive dashboard to explore Oklahoma's triennial national emissions inventory data. Includes maps, graphs, and databases.
Database Model Tool

WATER9

WATER9, the wastewater treatment model, is a Windows based computer program and consists of analytical expressions for estimating air emissions of individual waste constituents in wastewater...
Database Map Policy

New York DECinfo Locator

Mapping tool that provides access to a wide array of information related to air quality management, including permits, air quality monitoring, community vulnerability, public engagement, and...
Analysis Model Tool

APEEP

The Air Pollution Emission Experiments and Policy analysis (APEEP) model is an integrated assessment model that links emissions of air pollution to exposures, physical effects, and...
Washington DC air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 3,500 new childhood asthma cases every year in the Washington D.C. metro region.
New York City air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 21,000 new childhood asthma cases every year in the New York metro region.
Philadelphia air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 4,000 new childhood asthma cases every year in the Philadelphia metro region.
Chicago air pollution heatmap
Nitrogen dioxide pollution contributes to more than 10,000 new childhood asthma cases every year in the Chicago metro region.
Boston air pollution heatmap
Nitrogen dioxide pollution contributes to approximately 2,700 new childhood asthma cases every year in the Boston metro region.
Austin air pollution heatmap
Nitrogen dioxide pollution contributes to more than 1,800 new childhood asthma cases every year in the Austin metro region.
Baltimore air pollution heatmap
Nitrogen dioxide pollution contributes to more than 1,300 new childhood asthma cases every year in Baltimore metro region.

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