Monday, July 6, 2026

Heat Advisory Cautions Temps To Push Pasadena Into the 90s Through Thursday

The National Weather Service warns temperatures could reach 100 degrees in nearby mountains and valleys, and Los Angeles County is urging residents to check on neighbors without air conditioning

A heat advisory takes effect at 10 a.m. Tuesday and runs through 8 p.m. Thursday for the San Gabriel Valley, including Pasadena, with the National Weather Service forecasting highs near 90 to 92 degrees locally.

The advisory prompted the Los Angeles County Department of Public Health to issue a countywide warning Sunday urging residents — particularly older adults, young children, pregnant people and those without air conditioning — to take precautions against heat-related illness this week.

The National Weather Service’s Los Angeles/Oxnard office forecasts a sunny high near 90 for Pasadena on Tuesday, a sunny high near 92 on Wednesday, and a mostly sunny high near 92 on Thursday, with overnight lows around 63.

The advisory covers interior valleys and mountains across Los Angeles, Ventura, Santa Barbara and San Luis Obispo counties, including the San Fernando, San Gabriel, Santa Clarita, Cuyama and San Luis Obispo interior valleys. The most extreme readings, up to 103 degrees, are expected in the warmest mountain and interior valley locations of San Luis Obispo County.

Dr. Muntu Davis, the Los Angeles County health officer, said in the department’s July 5 advisory that heat kills more people nationally each year than floods, storms and lightning combined.

Older adults, young children, outdoor workers, athletes and people with chronic medical conditions face the greatest risk, Davis said, and anyone showing symptoms of heat exhaustion or heat stroke — including dizziness, nausea, a rapid heartbeat, confusion or passing out — should seek medical help immediately.

County health officials recommend drinking water throughout the day, avoiding outdoor activity during peak heat hours, wearing light-colored clothing, and checking on relatives, neighbors and pets. Anyone with a body temperature of 103 degrees or higher, confusion, a rapid pulse or hot, dry skin should be taken to a hospital or receive emergency care immediately, the county said.

Pasadena’s public library branches are not official cooling centers but offer air-conditioned space during regular hours.

Los Angeles County residents can also call 211 or visit ready.lacounty.gov/heat to find the nearest cooling center, splash pad or pool.

The advisory is scheduled to lift at 8 p.m. Thursday. The National Weather Service said temperatures are expected to cool only slightly afterward in some locations, and will remain above normal into the following week.