Southland heat advisory issued through 8pm Sunday

A summer heat wave continued on Sunday in the Southland, with near-triple-digit highs and poor air quality expected again on Monday in some areas.

The National Weather Service issued a heat advisory through 8 p.m. Sunday for the San Fernando, San Gabriel and Santa Clarita valleys, and Los Angeles County mountains. The advisories for the San Fernando and San Gabriel valleys were canceled early Sunday.

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"The extended period of hot temperatures creates a dangerous situation in which heat illnesses are possible, especially for the elderly and people outdoors that do not remain hydrated," warned the NWS statement.

"Temperatures inside vehicles, even if the windows are partially open, can quickly rise to life-threatening levels."

The weather service advised area residents to "Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors."

The South Coast Air Quality Management District said air quality would be very unhealthy for all individuals in Santa Clarita Valley and the Los Angeles County Mountains on Monday, and unhealthy for sensitive individuals in Pomona-Walnut Valley, San Fernando Valley and San Gabriel Valley.

Los Angeles County Health Officer Dr. Muntu Davis advised people living or working in these areas with heart disease, asthma or other respiratory diseases to minimize outdoor activities.

Sunday's highs reached 87 in downtown Los Angeles and Anaheim, 93 in Pasadena and Van Nuys, 100 in Valencia and Lancaster and 99 in Palmdale.

CNS contributed to this report.