Thank you for the thought and taking the time to reply. However the devices themselves all report their environmental stats as "OK":
#sh env all
Switch 1 FAN 1 is OK
Switch 1 FAN 2 is OK
Switch 1 FAN 3 is OK
FAN PS-1 is OK
FAN PS-2 is OK
Switch 2 FAN 1 is OK
Switch 2 FAN 2 is OK
Switch 2 FAN 3 is OK
FAN PS-1 is OK
FAN PS-2 is OK
Switch 1: SYSTEM TEMPERATURE is OK
Switch 2: SYSTEM TEMPERATURE is OK