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

  • Filters

    Reset filters
  • Geographic Coverage

  • Sector

  • Pollutants

  • Resource Type

  • Format

  • Cost

  • Owner

  • Data Type

Model Tool

Landfill Gas Emissions Model

Excel based model to estimate generation and emission rates for total landfill gas, methane, carbon dioxide, non methane organic compounds (NMOCs), and other hazardous air pollutants...
Database Policy

Air Pollution Emissions Inventories

Emissions inventories for multiple source sectors collected from state air quality agencies by the Environmental Integrity Project. Inventories are available for multiple years which differ across...
Policy Strategy examples

Mobile Vehicles and Portable Equipment

The Air District works closely with the California Air Resources Board to reduce the amount of air pollution from on- and off-road mobile sources, such as...
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.

Sign up to get the latest updates on new city clean air tools and resources.