The extreme heat has heightened fire danger across the region, prompting red flag warnings for the inland mountains and foothills of Los Angeles, Ventura, and Santa Barbara counties through Friday afternoon. Elevated humidity levels have compounded the discomfort, particularly in urban areas, and may pose health risks for vulnerable populations such as the elderly and those with pre-existing conditions. Residents in fire-prone areas should remain vigilant as the risk of wildfires persists.