RIVERSIDE (CNS) - Temperatures will soar well into the triple digits today in the Coachella Valley amid a heat wave that will keep highs past the century mark through Friday, according to the National Weather Service.Temperatures will remain slightly cooler, but still hotter than has been seen so far this year, in the rest of Riverside County.High pressure will strengthen over the next two days, making today and Wednesday the hottest days of the week, forecasters said. A slow cooling trend will follow and temperatures are expected to return to around seasonal average by Sunday.The NWS issued an excessive heat warning that will last until 9 p.m. Thursday in the Coachella Valley.High temperatures today could reach 91 degrees in Riverside, 107 in the Coachella Valley, 95 in th
