First Alert Forecast

Not as hot to start the week. Belen De Leon has the forecast for Monday Aug. 31, 2026.

Meteorologist David Biggar has the evening forecast for Sunday, August 30, 2026.

Saturday brings widespread 90-degree temperatures. David Biggar has the forecast for Saturday Aug. 29, 2026.

Extreme heat warnings remain in effect through Friday night across much of Los Angeles County.

Extreme heat continues before a slight cooldown. Shanna Mendiola has the forecast for Friday Aug. 28, 2026.

Meteorologist David Biggar has the evening forecast for Thursday, August 27, 2026.

We will have higher humidity on Thursday with more clouds, bringing a chance for spotty showers in some areas. This video was broadcast on the NBC4 News at 6 a.m. on Aug. 27, 2026.

Meteorologist David Biggar has the evening forecast for Wednesday, August 26, 2026.

Meteorologist David Biggar has the evening forecast for Tuesday, August 25, 2026.

Some Southern California Edison customers could have their power turned off as potentially dangerous fire weather conditions develop during a week of extreme heat. Public Safety Power Shutoffs allow power to be cut in areas where strong winds could damage electrical lines and spark fast-moving wildfires. Shutoffs are being considered for nearly 4,000 customers in Los Angeles County, according to…

The extreme heat will continue on Thursday with hotter than normal temperatures. This video was broadcast on the NBC4 News at 6 a.m. on Aug. 25, 2026.

Meteorologist David Biggar has the evening forecast for Monday, August 24, 2026.

Hgh temperature records are falling. Belen De Leon has the forecast for Monday Aug. 24, 2026.

Temperatures will soar this week. Shanna Mendiola has the forecast for Sunday Aug. 23, 2026.

A heat advisory is in effect through Monday for parts of Orange County, the Inland Empire and the San Bernardino and Riverside County mountains.

Some Southern California will hit triple digits this weekend and through the week. Shanna Mendiola reports for NBC4 at 7 a.m. on Aug. 22, 2026.

Meteorologist David Biggar has the evening forecast for Friday, August 21, 2026.

What to expect this weekend. Belen De Leon has the forecast for Friday Aug. 21, 2026.

Meteorologist David Biggar has the evening forecast for Thursday, August 20, 2026.

The heat risks will continue as the humidity increases. This video was broadcast on the NBC4 News at 6 a.m. on Aug. 20, 2026.