Detroit’s air-monitoring network is broad but fragmented. The Michigan Department of Environment, Great Lakes, and Energy (EGLE) operates about a dozen regulatory-grade stations that measure fine particles, ozone, and air toxics under federal standards (EGLE 2025 Ambient Air Monitoring Network Review). These provide the only data usable for enforcement but leave major gaps—especially on the east side and near industrial corridors.
The City of Detroit has added several Teledyne T640x particulate monitors through an EPA American Rescue Plan grant (EPA Air Monitoring Grant Awards, 2023)—improving local PM data but not tracking sulfur compounds or volatile organics.
Wayne County, through an ARPA-funded partnership with JustAir, deployed roughly 100 low-cost sensors across 43 communities (Planet Detroit, May 2024 | JustAir Case Study). These real-time sensors increase visibility but are officially classified as non-regulatory supplemental data (EPA Performance Targets for Air Sensors 2021) and cannot trigger enforcement.
Universities and neighborhood groups continue temporary studies and mobile monitoring (Wayne State University EJ Air Monitoring Project).
MONITORING SITES