nvme smart-log /dev/nvme0 | grep "^temperature"

nvme smart-log /dev/nvme0

Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning                    : 0
temperature                         : 45 C
available_spare                     : 100%
available_spare_threshold           : 10%
percentage_used                     : 0%
data_units_read                     : 3,020,387
data_units_written                  : 2,330,810
host_read_commands                  : 26,960,077
host_write_commands                 : 15,668,236
controller_busy_time                : 65
power_cycles                        : 98
power_on_hours                      : 281
unsafe_shutdowns                    : 68
media_errors                        : 0
num_err_log_entries                 : 63
Warning Temperature Time            : 0
Critical Composite Temperature Time : 0