Excessive Heat Watch To Be In Effect Through Saturday

LOS ANGELES (CBS) — Cooling centers will again be open across the Southland Friday to help residents cope with triple-digit temperatures.

The National Weather Service has issued an excessive heat watch for Friday afternoon that is expected to expire Saturday night.

Temperatures are expected to top 100 degrees, as a monsoonal flow brings both heat and humidity to Southern California.

The UV index will be at a 10 Friday, which means those with fair skin can burn after just four minutes outside.

Health experts recommend staying indoors with the air conditioner on, wearing light, loose-fitting clothes and hydrating frequently.

If you do need to go outside, wear sunscreen, a hat, and watch for any signs of heat stroke or exhaustion.

Temperatures aren't expected to drop until the middle of next week.

For a complete list of cooling centers, <a href="http://antonovich.lacounty.gov/PDFs/2011CoolingCtrs.pdf" target="_blank">click here</a>.