Abstract: With the construction and development of the low-altitude economy, the demand for refined wind field monitoring at low-altitude environments has become increasingly prominent. Based on the wind speed and wind direction of the Doppler wind lidar and a 100-meter meteorological gradient tower in Pengzhou, Chengdu from February 28 to March 27, 2023, the correlation analysis of wind speed and wind direction were conducted under non-precipitation and precipitation conditions at different heights ranging from 40 to 90 meters, as well as across 16 directional sectors. The results indicate that: (1) During the observation period, wind speeds in the Pengzhou area were generally low, mostly below 8 m·s^-1, while wind directions were distributed across nearly all quadrants. (2) The consistency between the lidar and gradient tower wind speed observations was generally high, showing an improving trend with increasing altitude, except at the 40-meter level where stronger turbulence led to relatively poorer agreement. (3) Wind direction accuracy was less affected by altitude, and the overall correlation of wind direction between the two instruments was better than that for wind speed. (4) Under precipitation conditions, the wind measurement accuracy of the Doppler wind lidar did not degrade. The largest deviations in wind speed and direction between the two instruments were observed for southerly winds, which is attributed to the influence of the tower structure on the local airflow around the wind sensors installed on the northern side of the gradient tower.