An apparatus, computer program product, and method relating to radio sensor coverage estimation for wireless network assurance. A network controller estimates a network sensor coverage level for candidate access points (APs), based on potential use of the candidate APs as network sensors to measure at least one key performance indicator (KPI). The controller determines a subset of the candidate APs, based on evaluating candidate APs for suitability as network sensors. The controller estimates a second network sensor coverage level for the subset of candidate APs, based on potential use of the subset of candidate APs as network sensors. The controller determines that the second network sensor coverage level is within a pre-defined threshold of the first network sensor coverage level, and provisions a radio in each AP in the subset of candidate APs as a network sensor to measure at least one KPI.