NO2 densities determined from the limb scanning visible light spectrometer on board the Solar Mesosphere Explorer spacecraft are reported for winter 1981/82 in the altitude region 28--40 km. The observational technique utilizes the photoabsorption by NO2 of Rayleigh scattered sunlight in the 440 nm spectral region. The NO2 density varies from pole to pole and shows large variations at high northern latitudes during the winter months which are related to both the temperature and flow of air near 30 km.