Days of triple-digital heat are in the forecast for Southern California.

The sweltering heat wave will see temperatures in many areas rising into triple digits and staying that way through Labor Day weekend. Excessive heat watches go into effect Wednesday morning and continue through Sunday for Los Angeles Counties.

An excessive heat warning goes into effect at 10 a.m. Tuesday to 8 p.m. Monday for inland Orange County and Riverside and San Bernardino county valleys.

Temperatures will rise a few degrees Monday, then spike even more on Tuesday and stay that way through next weekend. In Van Nuys, temperatures are expected to top 100 degrees every day from Tuesday through Sunday, peaking at 106 both Wednesday and Sunday.    

EXCESSIVE HEAT WATCH: A very HOT week ahead for southern California as temperatures will be climbing. Triple-digit heat is in the forecast beginning Wednesday for many inland spots, including the valleys. Expect hot conditions to continue through Labor Day Weekend. #CAwx #NBCLA pic.twitter.com/miylXdlHzy

In valley areas, highs the low 90s are in the Monday forecast. On Thursday, expect a high of 104.

"We're talking about a 12-degree jump from today to then, so it's really going to get going," said NBC4 forecaster Stephanie Olmo.

Here are some of the sizzling highs in this week's forecast.

Temperatures at the beaches will be lower, but still climb into the upper 80s in Santa Monica beginning Wednesday. Long Beach will see highs in the upper 80s, rising to 89 and 91 next weekend. 

In Orange County, inland highs will hover in the mid-to-upper 90s through the weekend. Overnight lows will not offer much relief either, staying in the 70s in most of the hotter areas.

Health officials advise residents to stay indoors with air conditioning whenever possible.

Cooling centers for Los Angeles County can be found here. Cooling centers for the city of Los Angeles can be found here, or by calling 311.