Final answer:
The symbols SKC and OVC in METAR refer to the cloud cover at a location. SKC means clear sky and OVC means overcast sky.
Step-by-step explanation:
If you read in a METAR the symbols SKC and OVC, they refer to the cloud cover observed at a particular location.
SKC stands for 'clear sky' and indicates that there are no clouds at or below 12,000 feet AGL (Above Ground Level).
OVC stands for 'overcast' and indicates that the sky is completely covered with clouds at or below 12,000 feet AGL.