Statistical properties of electromagnetic environment in wireless networks affecting its intranetwork electromagnetic compatibility and safety are studied. The analysis is based on the standard propagation channel model, a Poisson model of random spatial distribution of transmitters, and a thresholdbased model of the victim receptor behaviour (radio receiver or human body). The distribution of dominant interference level is derived and analysed under various network and system configurations. The aggregate interference is dominated by the nearest transmitter one. The distribution of the unordered single-node interference is independent of the transmitters’ power and their spatial density and is the same for homogeneous and non-homogeneous networks. The outage probability is used as a measure of not only the wireless link quality-of-service, but also of environmental risks induced by electromagnetic radiation. The maximum acceptable interference levels for reliable link performance and for low environmental risks are surprisingly similar.