News briefing · Published
Wildfire smoke alerts: how to keep indoor air cleaner
How do I keep indoor air clean during wildfire smoke?
When wildfire smoke reaches your area, South Coast AQMD advises staying indoors with windows closed and running an air conditioner or air purifier. Wear a well-fitting N-95 mask if you must go outside. People with lung or heart disease, older adults, pregnant people and children are at greater risk. Keep these supplies ready before the next alert.
An air quality alert for coastal and inland Orange County, California, ran from 4 PM Friday, October 16, 2026, according to WeatherBug alerts, which cite the South Coast AQMD.
What happened
The alert ran from 4 PM Friday to 10 AM Saturday. It advised people to stay indoors with windows closed, and to run an air conditioner or air purifier. Anyone outdoors was advised to wear a well-fitting N-95 mask.
What it means for your home
The alert named people with lung or heart disease, older adults, pregnant people and children as at greater risk, so plan for them first.
What to do this week
- Check that your N-95 masks fit well, and keep a few in an easy-to-reach place.
- Keep a HEPA air purifier ready, and know where its filter is.
- Pick one room that can be sealed, and learn how to close its windows, doors and vents.
- Keep a battery-powered radio or phone charger ready so you can follow alerts during a power cut.
Read the 72-hour blackout plan for a full home plan.
Sources
This briefing is general information, not medical, legal or electrical advice. In an emergency, call 911 or your local emergency number.