Residents across Southern California, particularly in Los Angeles County, Orange County, Riverside, and San Bernardino counties, are experiencing hazardous air quality conditions. The combination of fireworks pollution, residual soot from the Boyle Heights warehouse fire, and suppressed particulate matter due to high temperatures poses health risks, especially for individuals with respiratory conditions, children, and the elderly. Prolonged exposure to these pollutants can lead to respiratory distress and other health complications. The stagnant air conditions may persist, further aggravating the situation.