Air Sensor Toolbox

EPA’s 2025 Air Sensors Workshop

Join us in NC (or virtually) for our March 18-20, 2025 Air Sensors Workshop.

People, Process, & Performance: A Pathway to Impact

Save the date!
Interested in evaluating your air quality sensor?

There may be collocation opportunities near you, including collocation shelters at regulatory air monitoring sites. Design plans to build a collocation shelter are also available!

Learn about air sensor collocation opportunities
Two new air sensor performance target reports released!

These reports provide a consistent set of testing protocols, metrics, and target values to evaluate the performance of PM₁₀, NO₂, CO, and SO₂ air sensors for non-regulatory supplemental and informational monitoring (NSIM) applications.

Learn more about Air Sensor Performance Targets and Testing Protocols
Interested in quality assurance for air sensors data?

We have some tools and tips for creating Quality Assurance Project Plans.

Learn more about Quality Assurance for Air Sensors

Air sensor monitors that are lower in cost, portable and generally easier to operate than regulatory-grade monitors are widely used in the United States to understand air quality conditions. This website provides the latest science on the performance, operation and use of air sensor monitoring systems for technology developers, air quality managers, citizen scientists and the public. The EPA is involved in the advancement of air sensor technology, including performance evaluations of sensor devices and best practices for effectively using sensors. The information can help the public learn more about air quality in their communities.

Air Sensor Toolbox Resources in Spanish