It’s going to be a scorcher of a weekend. Weather officials have issued an excessive-heat warning in Long Beach and the Los Angeles area that will last from late Friday morning to Saturday night. A gradual cool down is expected to begin Sunday.

In the first heat wave of the summer, temperatures reached 107 degrees on Friday afternoon at Long Beach Airport, breaking the record of 93 degrees set in 1998. Officials said operations at the airport are continuing normally.

The National Weather Service attributed the heat wave to a strong upper-level high-pressure system, causing heat to build significantly across southwestern California, according to a news release.

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Heat waves can increase the possibility of heat-related illnesses.

“This is the time of year where we see the most incidents, with water drownings and even food-borne illnesses with food being left out in the heat,” said Nelson Kerr, director of environmental health for the city. “But the main one is the heat.”

Cooling centers will be available throughout the city and county. Libraries, recreation centers, senior centers and museums can also serve as cooling centers for the public during normal hours of operation.

Use this interactive map to find a cooling center near you:

Weather officials warn residents to avoid outdoor strenuous activity and to not leave children, seniors or pets alone inside a parked car, even with the windows down.