San Bernardino, CA Live Wildfire Smoke Map
Get Alerts For Wildfires In Your Area
The moment a wildfire starts near you, you'll get an instant alert and simple tips to reduce your smoke exposure.
What's In The Smoke
30xSmaller than a human hair
Fine enough to reach deep into the lungs. A MERV 13 is built to capture it.
How Far It Travels
It Doesn't Stay Local
Smoke rides the wind far downwind — you can get smoky air with no fire nearby.
What To Do During A Smoke Event
Simple steps to reduce indoor exposure.
- Stay In, Close UpShut windows and doors to keep smoke out.
- Set Fan To "On"Keeps air cycling through your filter, not just when heating or cooling.
- Recirculate AirSwitch off fresh-air intake so you're not pulling smoke in.
- Run A MERV 13Built to capture the fine PM2.5 in smoke.
- Add A PurifierExtra filtration for the room you use most.
- Wear an N95 if OutsideFits snug to block fine particles — a cloth mask won't.
The Best Air Filter For Wildfire Smoke
During smoke events, the EPA recommends upgrading to a MERV 13 filter — or the highest-rated filter your system can handle — to help reduce the fine particles smoke brings indoors. MERV 13 is the level most home HVAC systems can run while still capturing PM2.5, the fine particulate that makes up the bulk of wildfire smoke.
- Captures PM2.5 particles
- Blocks ash, soot, and smoke odor
- Keeps your indoor air safe—even when the outdoor air is dangerous
- Meets the EPA's recommended rating for filtering fine wildfire smoke particles.
Wildfire Smoke FAQs
Facts About Wildfires
Over 70,000 wildfires burn in the U.S. every year.
Wildfire smoke can travel 1,000+ miles, affecting states that aren't even near the blaze.
Exposure to wildfire smoke can worsen asthma, trigger heart issues, and lead to ER visits.
Indoor air can hold more fine particles during wildfire events unless it's properly filtered.
The EPA advises using MERV 13 filters or portable HEPA air cleaners during wildfire smoke events.
Don't Wait Until The Smoke's Inside.
Use the live wildfire smoke tracker and upgrade your air filters today to protect your lungs and your home.
Shop Filters For Smoke Protection
Current Forest Wildfire and Smoke Map in San Bernardino, CA
Where Are the Fires Now and How Is Smoke Impacting Air Quality?
San Bernardino can get smoke from several directions. Fires in the San Bernardino Mountains, the Cajon Pass, the high desert or even from Riverside County can all push smoke into the valley. Terrain and wind changes in the afternoon can move smoke into neighborhoods that looked clear earlier. That is why checking the live smoke map is more reliable than just looking at the sky.
This guide shows how to see today’s conditions, what local patterns to watch, what to do inside, and how to keep filters ready.
Key Takeaways
Check the AirNow Fire and Smoke Map for San Bernardino CA in the morning and again if wind speed or direction changes or if haze builds near the mountains.
At AQI above 100 move activity indoors especially for children, older adults, and people with asthma or heart and lung problems.
Keep windows and doors closed, run AC or HVAC on “recirculate” and use the highest MERV filter your system can handle. Keep a HEPA purifier running in one room.
Smoke in San Bernardino can load filters faster because of heat dust and valley geography so look at the filter right after a smoky day.
How To See Live Fire And Smoke Now
Open the AirNow Fire and Smoke Map.
Check monitor readings for AQI and PM2.5.
Turn on the smoke layer to see where plumes are moving.
Pan north toward the mountains and west toward the Cajon Pass to see where smoke could come from later.
This tells you what the air is right now and which direction the smoke is traveling.
Patterns That Matter In San Bernardino
Fires in the San Bernardino National Forest can drain smoke downslope into city areas especially overnight or in the morning.
Smoke from the Cajon Pass or high desert can move into the valley when winds turn.
Afternoon winds can pull smoke off the hillsides and spread it across lower neighborhoods.
Because of these local effects it is better to check the map at least twice on days when fires are active.
Indoor Steps When It Is Smoky
Close The House
Shut windows and doors. Put the A C or central system on recirculate so outdoor smoky air is not being pulled indoors.
Run The Fan
Set the thermostat fan to “On” during smoky hours. More indoor air will pass through the filter.
Use The Best Filter Your System Allows
Most homes run MERV 8 or MERV 11. On smoke days you can use MERV 13 if air at the vents still feels normal. Keep a spare filter on hand because San Bernardino heat and dust can fill a 1-inch filter faster.
Make One Cleaner Room
Pick a bedroom or main room. Keep the door mostly closed and run a True HEPA purifier there. If you use a box fan filter, build it with a newer fan and watch it while it runs.
Do not add more particles
Skip candles incense and heavy stovetop cooking during smoky hours. Keep bath and kitchen exhaust running short so you do not pull smoky air inside.
When Outside And Driving
Try to do yard work workouts and errands when the map shows better air over San Bernardino. If AQI climbs over 100 sensitive groups should stay inside more and avoid hard activity. If you must be outside in heavier smoke use a well-fitting N95 or P100. Cloth masks and loose surgical masks do not filter wildfire smoke well. In the car keep the windows up and set the air to recirculate.
Check And Replace Filters After Smoke
After one or two smoky days pull the HVAC filter out and look at it. Replace early if the media looks dark or streaked if the house smells smoky when the unit starts or if airflow from supply vents is weaker. Do the same with room purifiers or DIY filters.
Prepare For Smoke Days! Order Filters From Filterbuy!
San Bernardino homes can see dust heat and wildfire smoke in the same week. That is hard on thin filters. Filterbuy makes pleated HVAC filters in MERV 8 MERV 11 and MERV 13 in standard and custom sizes, so the filter fits tight and cleans the air that passes through it. Filters are made in the USA and ship fast with free delivery. You can also set Auto Delivery, so a clean filter arrives before the next fire or wind event.
