It will be sunny and warm in the Los Angeles area on Saturday, with highs from around 80 at the beaches to the lower 90s inland.
Orange County will also be warm, with highs reaching 87 to 92 in coastal areas and only light winds.
The National Weather Service forecasts a mostly clear evening throughout the region with lows in the mid 60s to around 70.
A period of significant cooling will begin Sunday and continue through Monday, with highs about 5 degrees lower on Sunday.
The South Coast Air Quality Management District predicted air quality that will be in the good to unhealthful for sensitive groups range in the South Coast Air Basin Saturday.
Here are the latest temperatures and conditions around Southern California: