Resource Type: Tool
Suite of tools providing urban and rural forestry analysis and benefits tools. i-Tree quantifies forest structure and estimates the environmental and economic benefits of trees.
MiEJScreen is a screening tool that provided percentile scoring various environmental, health and socioeconomic indicators to measure relative environmental risk in communities. This map is meant for general information about Environmental Justice in Michigan and is a collection of basic data sets related to Environmental Justice concerns which allow users to identify, query, and filter the data.
FHWA’s CMAQ Toolkit is an online collection of strategies, case studies, and reference materials that helps transportation agencies use Congestion Mitigation and Air Quality (CMAQ) Program funds effectively. Organized by project type—such as transit improvements, travel demand management, freight and diesel strategies, bicycle and pedestrian projects, traffic flow improvements, and alternative fuels—it describes how each strategy works, its air quality and congestion benefits, typical costs, and implementation considerations. The toolkit is designed to support states, MPOs, and local governments in selecting, designing, and communicating transportation projects that reduce emissions and improve air quality.
CalEnviroScreen, developed by California’s Office of Environmental Health Hazard Assessment (OEHHA), is a screening tool that scores and ranks census tracts across the state based on cumulative pollution burdens and population vulnerabilities. It combines data on pollution sources and exposures (air pollution, hazardous sites, traffic, drinking water, etc.) with sensitive population and socioeconomic indicators (e.g., asthma ER visits, cardiovascular disease, poverty, linguistic isolation) to identify communities that are disproportionately burdened by multiple environmental and social stressors.
CARB’s MSEI (Mobile Source Emissions Inventory) Modeling Tools page is a hub for California’s official mobile?source emissions models—including EMFAC (on?road vehicles), OFFROAD (off?road equipment), and related utilities. These tools estimate emissions of criteria pollutants, toxics, and greenhouse gases from cars, trucks, buses, construction equipment, lawn and garden equipment, and more, and are used for SIPs, conformity, CEQA, and other regulatory and planning analyses.
EPA’s COBRA (Co-Benefits Risk Assessment) Health Impacts Screening and Mapping Tool estimates how changes in air emissions—especially from energy and climate policies—affect air pollution levels, health outcomes, and related economic benefits across U.S. counties. Users can input emissions changes or select built-in scenarios, and COBRA uses reduced-form air quality modeling plus health impact and valuation functions to produce quick, screening-level estimates of avoided deaths, illnesses, and monetized health benefits, along with maps and tables for communication and planning.
The HARP Air Dispersion Modeling and Risk Tool, developed by the California Air Resources Board, is Windows-based software that allows users to run air dispersion models and calculate associated health risks from toxic air pollutants. Used primarily in the state’s Hot Spots Analysis & Reporting Program, it integrates modeled concentration outputs with built?in health effect values and demographic data (including a dedicated census database and health database) to support standardized health risk assessments for stationary emission sources in California.
CalEEMod (California Emissions Estimator Model) is a free, statewide land use emissions calculator used to estimate air pollutant and greenhouse gas emissions from development projects in California. It allows planners, consultants, and agencies to input project characteristics (like land use type, size, construction schedule, and operations) and then uses built?in emission factors and default assumptions to quantify construction and operational emissions (e.g., vehicle trips, energy use, area sources). The tool supports CEQA review, air district permitting, and project comparison by providing standardized, transparent emission estimates for proposed developments.
Website providing tools related to air quality during inversions (conditions when a layer or warm air sits over a layer of cold air, trapping pollutants near the ground).
