Overview
- The National Weather Service issued an air quality alert for Los Angeles County at 12:05 p.m. Wednesday, effective until Friday, Dec. 19, at midnight.
- Separate alerts remain in effect for Orange, Riverside and San Bernardino areas, with local reports citing differing end times on Wednesday (midnight versus 1:30 p.m.).
- The South Coast Air Quality Management District’s mandatory No-Burn rule remains in force across the South Coast Air Basin, prohibiting wood, pellet and manufactured fire-log burning indoors and outdoors.
- Health officials warn that fine smoke particles (PM2.5) can penetrate deep into lungs and drive asthma attacks, emergency room visits and hospitalizations.
- Guidance urges residents to stay indoors when possible, run air conditioning or HEPA purifiers, avoid devices that draw in outside air, limit outdoor exertion, avoid open burning and cut back on pollution-producing activities.