The mercury soared to 121 degrees Monday in Palm Springs, toppling a 50-year-old maximum temperature record, as two heat warnings covering the Inland Empire and the Coachella Valley remained in effect, the National Weather Service reported.

An excessive heat warning covering the Coachella Valley and the San Gorgonio Pass near Banning and a heat advisory covering the Riverside metropolitan area were briefly canceled before being reinstated by the Weather Service through 8 p.m.

Palm Springs reached a high of 121 Monday afternoon, breaking the 120-degree record for this date set in 1969, according to the NWS.

The high in Thermal was 118 degrees, while the mercury reached 103 in Riverside, 99 in the San Gorgonio Pass near Banning and 96 in Temecula.

The high pressure system that brought extreme heat over the weekend is expected to make its way east on Tuesday, bringing a drop in temperatures throughout the region, according to NWS meteorologist Stefanie Sullivan. After the significant cooling on Tuesday, temperatures are expected to drop a degree or two each day through Friday, Sullivan said.

A slight chance of thunderstorms is also predicted for Monday evening through Tuesday morning in parts of the Inland Empire and the desert region.

Cooling centers are open daily across the county, providing residents who do not live in climate-controlled environments a free, cool space to relax until the evening hours.

A complete list of cooling centers is available at–Cool–Center–Directory–7–10 — 2019.pdf.

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