Current Live Forest Wildfire and Smoke Map Today in San Bernardino CA: Stay Updated

The air outside your door right now might be safe to breathe. Or it might carry fine particles from a fire burning miles away in the San Bernardino Mountains. The live map above shows you which one is true at your address, and at every monitor across the county.

Conditions can shift inside an hour during fire season, especially when the wind turns. So check back as often as you need to. Below the map, we explain what the readings mean for your breathing, and what helps when the air gets bad.

TL;DR Quick Answers

Current live forest wildfire and smoke map today in San Bernardino CA

The live wildfire and smoke map for San Bernardino County, California is available at two official sources, updated continuously:

• AirNow Fire and Smoke Map (fire.airnow.gov) shows real-time PM2.5 readings, smoke plumes, and fire locations. The EPA and U.S. Forest Service maintain it together.
• CAL FIRE Active Incidents (fire.ca.gov/incidents) shows current fire perimeters, acreage, containment percentage, and evacuation status.

To check conditions at your address: Open the AirNow map, find your community (San Bernardino city, Redlands, Fontana, Rancho Cucamonga, Big Bear, Yucaipa, Hesperia, or Victorville), and tap the colored circle nearest you. The number is your current Air Quality Index (AQI).

What the AQI number means right now:

• 0–100: Most people can be outside normally.
• 101–150: People with asthma, COPD, heart conditions, pregnancy, kids, and older adults should cut back on outdoor time.
• 151+: Move activities indoors.
• 201+: Plan to stay inside.

If you smell smoke, the air near you is likely worse than the nearest monitor reads. Close the windows, switch your AC to recirculate, and run a HEPA air purifier in the room you use most.

For evacuation alerts in San Bernardino County, sign up for TENS through San Bernardino County Fire. For air quality advisories, South Coast AQMD covers the region.

Top Takeaways

• Wildfire smoke harms you more than ordinary air pollution does. A 2026 Science Advances study found that fine particulate from wildfire smoke is roughly five times more toxic than the PM2.5 you’d inhale from cars or industry. So a “moderate” smoke day deserves more care than a “moderate” rush-hour day with the same AQI.
• Smoke crosses county lines. Fires in the San Bernardino Mountains can push particles west into Riverside, Los Angeles, and northern Orange County during Santa Ana wind events. The map shows you what’s burning. The forecast layer shows where it’s heading.
• Hazy sky and bad air aren’t the same thing. A smoky-looking sunset can come with healthy ground-level air. Crystal-clear skies can hide unhealthy PM2.5 at the level you actually breathe. The monitor readings are what count.
• You don’t have to overhaul your day. Closing the windows on a smoky afternoon or running an air purifier in the bedroom each cuts your exposure on its own. Pick whichever fits the day you’re having.

What You’re Looking at on the Live Map

The map combines two views you want at once during a smoke event. Colored circles are ground-level air quality monitors that read fine particle pollution (PM2.5), the smoke component that goes deepest into your lungs. Flame icons mark reported wildfires. Where forecasts exist, smoke plume layers sit on top.

For most readers in San Bernardino County, AirNow’s Fire and Smoke Map is the single most useful tool. The EPA and U.S. Forest Service built it together. The CAL FIRE incident page adds the official details on each fire, including acreage, percent contained, and evacuation status.

Understanding the Air Quality Index

The Air Quality Index is a 0–500 scale that turns pollutant concentrations like PM2.5, ozone, and carbon monoxide into a single number you can act on. Wikipedia’s Air Quality Index entry covers the full scoring methodology if you want the science behind it. Higher numbers mean dirtier air and more risk to your breathing.

Quick reference for smoke days:

• 0–50 (Good): Most people can do what they normally do.
• 51–100 (Moderate): Unusually sensitive people may want to cut back on prolonged outdoor exertion.
• 101–150 (Unhealthy for Sensitive Groups): People with asthma, COPD, heart disease, pregnancy, kids, and older adults should reduce outdoor time.
• 151–200 (Unhealthy): Everyone may begin to feel effects. Sensitive groups should avoid outdoor activity.
• 201–300 (Very Unhealthy): Move activities indoors.
• 301+ (Hazardous): Stay inside as much as you can.

What Wildfire Smoke Does to Your Breathing

Wildfire smoke carries fine particles small enough to reach the deepest parts of your lungs. Some can pass into your bloodstream. The EPA says even healthy adults can develop coughing, irritated airways, headaches, and reduced lung function during heavy smoke exposure.

People with asthma may have more frequent attacks during smoke days. COPD symptoms often flare. And heart disease raises the risk during longer exposures, since fine particles affect cardiovascular function as well as lung function.

You don’t have to be in a sensitive-groups category to feel smoke effects. Feeling them doesn’t mean something is wrong with you.

What To Do Right Now

If you only do one thing, close the windows. After that, in rough order:

1. Switch your AC to recirculate. Don’t pull in outside air.
2. Run a HEPA air purifier in the room you spend the most time in.
3. Postpone outdoor exercise. Working hard makes you pull more particles into your lungs.
4. If you have asthma, COPD, or heart disease, keep your rescue inhaler or medications close. Call your doctor’s office if symptoms feel different than usual.
5. If you have to be outside in unhealthy air, a properly fitted N95 or KN95 cuts what you inhale meaningfully. Cloth and surgical masks don’t filter PM2.5.

Smoke Crossing County Lines

Smoke from fires in the San Bernardino Mountains often drifts west into Orange and Los Angeles counties on Santa Ana wind reversals. If you’re watching conditions across county lines, Filterbuy’s current live forest wildfire and smoke map for San Bernardino CA gives you a parallel view of that side of the smoke corridor.

“After five fire seasons covering respiratory wellness from inside Southern California’s smoke corridor, here’s what I’ve come to trust most: the air can flip from clear to unhealthy in under an hour, and the people who breathe easiest are the ones who check the map twice — once now, and again before they walk outside.”

Essential Resources

These are the live, official sources we recommend for tracking wildfires, smoke, and air quality conditions affecting San Bernardino County. Bookmark whichever ones fit how you check in.

• AirNow Fire and Smoke Map at fire.airnow.gov. The single best view of wildfire smoke, PM2.5 readings, and fire locations across the U.S. The EPA and U.S. Forest Service built it together.
• CAL FIRE Active Incidents at fire.ca.gov/incidents. Official incident pages for every California wildfire 10 acres or larger, with the current acreage, containment percentage, and evacuation status for each one.
• InciWeb (Interagency Incident Information) at inciweb.wildfire.gov. The federal hub for wildfire information. It tracks evacuation orders, road closures, and daily incident updates from federal land agencies.
• South Coast AQMD Air Quality Advisories at aqmd.gov/home/air-quality/air-quality-advisories. Smoke advisories and air quality alerts for San Bernardino, Riverside, Los Angeles, and Orange counties. The regional air pollution control agency issues them.
• San Bernardino County Office of Emergency Services at oes.sbcounty.gov/stay-informed. Real-time emergency alerts and evacuation maps for county residents, plus the Ready SB County app.
• EPA — Health Effects of Wildfire Smoke at epa.gov/wildfire-smoke-course/health-effects-attributed-wildfire-smoke. The EPA’s plain-language summary of what wildfire smoke does to your lungs and heart, with citations to the underlying research.

Statistics Worth Knowing

• Asthma emergency department visits rose 17% during U.S. wildfire smoke days in 2023. CDC researchers analyzing the 2023 Canadian wildfire smoke episodes found 17% more asthma-associated ED visits than expected during the 19 days when wildfire smoke pushed the Air Quality Index to “Unhealthy for Sensitive Groups” or worse. Source: CDC Morbidity and Mortality Weekly Report, August 2023.
• Peer-reviewed estimates link California wildfires to between 52,480 and 55,710 premature deaths over an 11-year period. A peer-reviewed analysis in Science Advances attributed roughly 53,000 California deaths between 2008 and 2018 to fine particulate exposure from wildland fires, with an associated economic valuation of $432 billion to $456 billion. Source: Connolly et al., Science Advances, 2024.
• Wildfire smoke PM2.5 may be about five times more toxic than ordinary PM2.5. A 2026 Science Advances causal modeling study estimated that fine particulate matter from wildfire smoke carries roughly five times the toxicity of PM2.5 from other sources, and that chronic exposure contributes to an estimated 24,054 all-cause deaths per year in the contiguous United States. Source: Wei et al., Science Advances, 2026.

Final Thoughts and Opinion

Living near the San Bernardino National Forest means smoke shows up as a recurring fact of life for parts of every year, not a once-a-decade emergency. And the tools for tracking and protecting yourself have improved a lot in the last few years. A free official map shows what your air looks like at the block level. Modest HEPA purifiers clean a bedroom faster than most people expect, and a properly fitted N95 in your glove compartment costs less than dinner.

Working with this question for a while now, here’s our take. Don’t try to do everything on smoke days. Just trim the hours of exposure where you can. Closing the windows when AQI climbs, moving a morning workout earlier, picking up the inhaler before symptoms get bad — these stack up across a fire season more than most people realize.

When the air keeps changing, the habit serves you better than the plan.

Frequently Asked Questions

Where can I see a live wildfire map for San Bernardino County right now?

The embedded map above pulls live data from CAL FIRE and AirNow. To go straight to the source, visit fire.airnow.gov for smoke and air quality readings, and fire.ca.gov/incidents for current California wildfires.

What is the current AQI in San Bernardino, CA?

Find your community on the map and tap the colored circle nearest you. The number that appears is the current Air Quality Index for that monitor. Higher numbers mean dirtier air. The same map covers San Bernardino city, Redlands, Fontana, Rancho Cucamonga, Big Bear, Yucaipa, Hesperia, and Victorville.

Is it safe to go outside in San Bernardino today?

It depends on today’s AQI and whether you’re in a sensitive group. Under 100, most people can be outside without major precautions. From 101 to 150, people with asthma, COPD, heart disease, pregnancy, kids, and older adults should cut back on hard outdoor exertion. Once AQI climbs past 150, most people should move activities inside. Past 200, plan to stay in.

How can I tell if wildfire smoke is affecting my home’s air?

The most obvious sign is smelling smoke indoors. Subtler ones include coughing, scratchy throat, or watery eyes when you’re inside with the windows closed. A consumer indoor air-quality monitor with a PM2.5 sensor gives you a real number. Closing the windows and running a HEPA air purifier in the room you use most are the two changes that help your indoor air the most.

What AQI level is dangerous for people with asthma or COPD?

The “Unhealthy for Sensitive Groups” range starts at AQI 101. People with asthma, COPD, and other lung conditions should reduce outdoor time at that level. Follow whatever action plan your healthcare provider has given you for elevated air pollution days, including any rescue medications.

Should I wear a mask during wildfire smoke, and which kind works?

A properly fitted N95 or KN95 respirator can meaningfully reduce the PM2.5 you inhale. Cloth and surgical masks weren’t designed to filter fine particles, so they don’t help much against smoke. Fit matters most. A loose N95 leaks around the edges, and a tight one makes breathing slightly harder. If you have heart or lung disease, talk with your doctor before relying on a respirator.

How long does wildfire smoke usually stay in the air after a fire is contained?

It depends on the fire’s size, the terrain, and current weather. After a small fire and a wind shift, smoke can clear in hours. When an inversion traps particles in low areas like the San Bernardino Valley, the same smoke can linger for days. Keep checking the map even after a fire is reported contained, since embers and smoldering can keep producing smoke.

Where do I sign up for wildfire and smoke alerts in San Bernardino County?

Sign up in two places. The Telephone Emergency Notification System (TENS) through San Bernardino County Fire delivers evacuation alerts. AirAlerts.org through South Coast AQMD covers air quality and smoke advisories. The Ready SB County app handles both, alongside a personal preparedness plan you can build inside it.

Does wildfire smoke from San Bernardino reach Orange County or Los Angeles?

Often, yes. Inland fires push smoke west on Santa Ana wind reversals, and prevailing winds frequently carry smoke from the San Bernardino Mountains into Riverside, eastern Los Angeles County, and northern Orange County. For predicting drift, the smoke plume forecast layer on the map gives you the most useful single view.

What’s the difference between a Red Flag Warning and an Air Quality Advisory?

A Red Flag Warning comes from the National Weather Service. It calls out conditions that make wildfires likely to start or spread quickly: high winds, low humidity, and dry vegetation. The warning is about fire risk before any fire begins. An Air Quality Advisory comes from your regional air district, which in San Bernardino is South Coast AQMD. The advisory goes out when smoke or other pollution is already affecting the air you breathe. Red Flag Warnings forecast the fire risk. Air Quality Advisories tell you the smoke has arrived.

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