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yesterday

Air-Quality Alerts Cover L.A., Orange, Riverside and San Bernardino Through Monday

Elevated PM2.5 forecasts prompted a South Coast AQMD No‑Burn order with indoor‑air safety guidance.

San Bernardino and Riverside County Valleys, Riverside County Mountains, San Gorgonio Pass Near Banning, Orange County Coast and Orange County are under an air quality alert which was reported by the National Weather Service on Sunday at 11:41 a.m. The alert is in effect until Monday Dec. 22, at 11:45 a.m.

Overview

  • NWS alert issued Sunday covers Riverside, San Bernardino and Orange County areas until Monday, Dec. 22 at 11:45 a.m.
  • A separate NWS alert keeps Los Angeles County under advisory until Monday at 1:15 p.m., spanning beaches, valleys and nearby mountains.
  • South Coast AQMD extended a mandatory No‑Burn day for the South Coast Air Basin, banning wood, pellet and manufactured fire‑log use in all wood‑burning devices.
  • Officials say smoke particles can penetrate deep into lungs, elevating risks of asthma attacks, ER visits and hospitalizations.
  • Guidance urges staying indoors with AC or air purifiers and avoiding swamp coolers or whole‑house fans, with No‑Burn decisions based on 24‑hour PM2.5 forecasts that may differ from real‑time maps.