Heatwave Relief Coming To San Gabriel Valley

ARCADIA, CA — Heat, humidity, and a high pressure system have put San Gabriel Valley residents to the test this week. In the fourth heatwave of the season, the National Weather Service alerted residents of a heat advisory, saying that high temperatures would remain until 9 p.m. Thursday evening, when a cooling trend would prevail.

"Afternoon temperatures across the lower elevation areas will be in the upper 90s to 104 degrees Thursday," the National Weather Service reported.

In addition, overnight low temperatures below 5,000 feet will only cool into the 70s and lower 80s," warned an NWS statement on the advisory.

"Heat illnesses are possible. Temperatures inside vehicles, even if the windows are partially open, can quickly rise to life-threatening levels. ... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors."

The weather service also reminded area residents to provide shade and water to pets and livestock.

The NWS forecast a combination of sunny and partly cloudy skies in L.A. County Thursday and highs of 74 degrees at LAX; 76 in Avalon; 86 on Mount Wilson, in Long Beach and in Downtown L.A.; 91 in San Gabriel; 93 in Burbank; 95 in Pasadena; 102 in Woodland Hills; 103 in Saugus; and 105 in Palmdale and Lancaster.

Temperatures in the hottest areas of L.A. County will drop between 2 and 6 degrees Friday and by up to another 6 degrees on Saturday.

The NWS forecast sunny skies in Orange County Thursday and highs of 74 in Newport Beach, Laguna Beach and San Clemente; 83 on Santiago Peak; 89 in Irvine and on Ortega Canyon at 2,600 feet; 90 in Fullerton; 92 in Anaheim and Mission Viejo; 93 in Fremont Canyon and Yorba Linda; and 94 in Trabuco Canyon. Temperatures will fall by up to 6 degrees Friday and up to another 4 degrees on Saturday.