NWS Forecast Office Los Angeles, CA

High pressure is building over the area this week, bringing significant heat to SW California. The heat will increase through the week, peaking on Friday and Saturday. Highs from the coastal valleys to the deserts are expected to be between 96 to 116 degrees by late week, resulting in a high risk of heat-related illnesses. High temperatures across the coastal plain will be lower, but still climbing into the 82 to 92 degree range late in the week. Overnight low temperatures will also remain quite warm, exacerbating the excessive heat conditions. There will also be elevated to brief critical fire weather conditions this week, due to the hot temperatures and low relative humidity. Rapid fire spread will be likely any new fire starts. Use extra caution in the heat, and with any source of spark or flame!