As part of an air toxics study in the city of Albuquerque a network of temperature sensors were used to measure stability across the city. The Albuquerque urban area is situated in broad valley and is bounded to east by a mountain range. Instruments included a tethered balloon system, an instrumented aerial tramway, a laser ceilometer and a network of surface based sites. The surface measurements varied over the range of elevations from 1500 meters above mean sea level in the valley to over 3100 meters on the mountain range. One goal of this study was to utilize the pseudo profiles along with the tethered balloon and nearby twice daily radiosonde measurements at the airport to estimate stability. The paper reports some observations from the study and discusses some of the issues in using pseudo profiles for estimating atmospheric stability.