An updated air quality alert is in effect for the Santa Ana Mountains and foothills, the Orange County coast and Orange County, with the National Weather Service issuing the notice Tuesday at 9:42 p.m. The alert is set to remain in place until Wednesday May 20 at 9:45 p.m.
The guidance is straightforward: stay indoors whenever possible, keep outdoor activity to the bare essentials when you cannot avoid going out, and cut back on driving, gas-powered lawnmowers and other motorized vehicles. People are also being told not to burn debris or any other materials during the alert, and to monitor NOAA Weather Radio or another weather news outlet for updates.
That advice matters most for people with respiratory issues or other health problems, who should exercise extra caution while the alert remains active. The warning is part of the National Weather Service’s broader stream of warnings and advisories, which can cover multiple Orange County-related areas at once, including the foothills and the coast.
For now, the alert turns a familiar warm-weather inconvenience into a practical health warning: limit what you breathe in, limit what you kick up, and pay attention through Wednesday night. The end time is already on the calendar, but the safer move is the simplest one — stay inside when you can and take the alert seriously until it expires.
