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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Database

Envirofacts

Envirofacts is the EPA's primary "one-stop shop" for environmental data. It acts as a data warehouse that integrates information from dozens of different EPA regulatory databases...
Guidance Tool

EPA for State and Local Governments

This resource, managed by the EPA Office of Congressional and Intergovernmental Relations (OCIR), serves as the primary gateway for state, local, and tribal officials to navigate...
Analysis Database Tool

Solid Waste Emissions Estimation Tool

Tool for estimating city-level annual emissions of methane, black carbon, and other pollutants including CO2 from various sources in the waste sector.
Database Guidance Tool

Data.gov

Data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.
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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