A Severe Extreme Heat Warning is in effect for San Bernardino and Riverside County Valleys-The Inland Empire until 27 July 2026, 20:00, as issued by the National Weather Service (NWS).
The warning is expected to remain in effect from 22 July 2026, 00:10 through 27 July 2026, 20:00. Dangerously hot conditions with high temperatures as hot as the upper 90s to 110 and low temperatures as warm as the 70s are expected.
An Extreme Heat Warning indicates that dangerously hot conditions may increase the risk of heat-related illnesses. Residents in the affected areas should be prepared for potentially hazardous weather conditions.
In case of emergency, dial 911. Follow guidance from the NWS and local authorities. Stay hydrated by drinking plenty of fluids and seek air-conditioned environments. Avoid prolonged exposure to the sun and check on vulnerable neighbors and relatives.