Although temperatures have cooled since the record-breaking highs earlier this week, above-average heat continued to scorch the region Sunday, making matters more difficult for firefighters working to gain the upper hand on the massive Apple Fire in Cherry Valley.

An excessive heat warning has been in place since Thursday and will remain in place until 9 p.m.

The National Weather Service warned that “dangerously hot conditions” across the region will significantly increase the potential for heat-related illnesses, particularly for those working or participating in outdoor activities.

Sunday’s highs reached 99 degrees in Riverside, 97 in Beaumont, 100 in Hemet, 115 in Thermal and 118 in Palm Springs.

In Cherry Valley, where firefighters are battling the 20,516-acre wildfire, the high was 95 degrees, about 10 degrees cooler than Saturday. The humidity at noon was 12%.

Among the 14 cooling centers set up by the county, five are in the Coachella Valley, two in the Banning Pass, one in Moreno Valley, one in Temecula and five in Riverside.

A list of the centers can be found at

The NWS said that by Tuesday temperatures should dip to below normal.

“This dry and seasonally cool pattern will prevail through next weekend,” the NWS said.

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