Many airports have an entry SLPxxx in the remarks section of their METAR. What is it? SLP stands for “Sea Level Pressure”. As an example, let’s look at a Burbank METAR:
KBUR 151753Z 14007KT 9SM CLR 23/14 A2994 RMK AO2 SLP127 T02280144 10228 20167 50000 $