Updated March 2026

Even when you’re not threatened by the flames, wildfire smoke can affect employers, schools, property managers, local governments, and communities far from the fire line. Smoke can travel long distances, enter buildings, disrupt operations, affect indoor air quality, and create health risks for workers, residents, students, and the public.

Wildfire safety planning should cover smoke exposure, communication, building operations, indoor air quality, employee protection, applicable wildfire smoke rules, evacuation, business continuity, and recovery after a smoke event. Here are the questions we hear most frequently from employers and supervisors who want to protect their people from the hazards associated with wildfire events.

Quick Answers

• Wildfire smoke can irritate the eyes, nose, throat, and lungs, and it can worsen asthma, COPD, heart disease, and other chronic conditions.
• PM2.5 is the main short-term pollutant of concern in wildfire smoke because these particles are small enough to travel deep into the lungs and may even enter the bloodstream.
• Businesses may need to monitor air quality, train employees, change work practices, improve filtration, and provide respirators depending on smoke conditions and state rules.
• A Community Wildfire Protection Plan helps a community identify risk, set priorities, and create an action plan before the next fire season arrives.

1) What Health Problems Can Wildfire Smoke Cause?

Wildfire smoke can make you sick. Common short-term symptoms include irritated eyes, runny nose, sore throat, coughing, wheezing, trouble breathing, headache, fatigue, and chest discomfort. In some people, wildfire smoke can also trigger asthma attacks, worsen COPD, and aggravate heart conditions.

The main pollutant of concern is fine particulate matter known as PM2.5. These particles are small enough to get deep into the lungs, and some may move into the bloodstream. That is why smoke events are a public health issue.

People at higher risk include children, older adults, pregnant women, people with asthma, COPD, heart disease, diabetes, or chronic kidney disease, and outdoor workers subjected to prolonged exposure.

2) What Is In Wildfire Smoke, and Why Does PM2.5 Matter So Much?

Wildfire smoke is a complex mixture of fine particles and gases produced when vegetation and other materials burn. Depending on conditions, smoke can contain PM2.5, carbon monoxide, volatile organic compounds, and other combustion-related pollutants. For short-term smoke exposure, PM2.5 is the pollutant public health agencies focus on most.

PM2.5 means particulate matter that is 2.5 micrometers in diameter or smaller. These particles are far too small to see individually, but they can penetrate deeply into the respiratory system. That is why air quality alerts, smoke guidance, and many worker-protection rules are built around PM2.5 measurements and AQI categories. 

3) What Do Recent U.S. Wildfire Statistics Show?

Wildfire activity changes from year to year, but the national totals remain high. According to the National Interagency Fire Center, the United States recorded 77,850 wildfires and 5,131,474 acres burned in 2025. In 2024, the totals were 64,897 fires and 8,924,884 acres burned. In 2023, there were 56,580 fires and 2,693,910 acres burned.

Looking a little farther back, 2022 saw 68,988 fires and 7,577,183 acres burned, 2021 saw 58,985 fires and 7,125,643 acres burned, and 2020 reached 58,950 fires and 10,122,336 acres burned. The exact totals change, but the pattern is evident: large smoke-producing fire seasons are not rare events — they are a recurring operating risk for many organizations.

It is also important to remember that acreage alone does not tell the whole story. California’s Camp Fire (2018) burned less acreage than the largest wildfires that year, yet it killed at least 85 people and destroyed more than 18,000 structures, making it one of the clearest examples of how destructive even a smaller wildfire can be.

4) Can Wildfire Smoke Affect People Far From The Fire?

Yes. Smoke can travel far beyond the fire perimeter and still create unhealthy air. People do not need to see flames nearby to experience smoke exposure. In many cases, communities far from the source of the fire deal with degraded air quality, reduced visibility, outdoor work disruptions, and indoor air problems.

Wildfire smoke planning is critical for office buildings, campuses, apartment communities, schools, hospitals, retail properties, and public buildings not in the path of the flames. Large areas can be affected when regional smoke settles over a community. That is why pre-planning for wildfire safety is wise.

5) Why Should Businesses Plan For Wildfire Smoke Even If They Are Not In A Forested Area?

A wildfire can affect a business in several ways at once. It may expose outdoor workers, degrade indoor air, disrupt HVAC performance, create complaints from tenants or employees, force schedule changes, and raise questions about duty of care, risk communication, and operational continuity.

EPA’s current guidance for commercial and public buildings emphasizes smoke readiness before the event, not just reaction during the event. That includes improving filtration, adjusting HVAC settings, reducing indoor pollutant sources, monitoring indoor and outdoor conditions, keeping windows and doors closed as much as practical, and having a smoke-ready checklist for building operations.

6) What Should A Business Wildfire Smoke Plan Include?

A workable wildfire smoke plan should identify who monitors air quality, what data source will be used, what exposure thresholds trigger action, how employees will be informed, what work changes are available, how indoor spaces will be protected, and when respirators will be offered or required. 

For buildings and facilities, the plan should also address HVAC filtration, smoke entry points, room or building use changes, occupant communication, and response steps for people who develop symptoms. EPA’s current commercial-building guidance also points to comparing indoor and outdoor conditions, reducing door openings, and preparing building-specific smoke-readiness checklists before the season begins.

For employers with outdoor operations, the plan should be practical enough to use in real time. That usually means assigning responsibility, training supervisors, giving employees a way to report symptoms or worsening smoke, and deciding in advance how work will be modified when air quality deteriorates.

7) What Wildfire Smoke Regulations Should Employers Know About?

This depends on the state, the industry, the work setting, and the exposure level. In California, the wildfire smoke rule applies to covered workplaces when the current AQI for PM2.5 is 151 or greater and the employer should reasonably anticipate employee exposure. Covered employers must determine exposure, communicate hazards, provide training, use feasible engineering and administrative controls, and provide respirators for voluntary use when AQI for PM2.5 is 151 to 500. If AQI exceeds 500, respirator use is required.

Oregon’s permanent wildfire smoke rules are keyed to PM2.5 at or above 35.5 µg/m3, which corresponds to AQI 101. The rules require employers to assess and monitor air quality, provide training, implement two-way communication, use engineering and administrative controls, and provide NIOSH-approved filtering facepiece respirators for voluntary use at that level. Oregon also updated AQI references after EPA changed AQI calculations in 2024, while keeping the underlying PM2.5 exposure concentrations the same.

Washington’s permanent wildfire smoke rules took effect on January 15, 2024 and were later updated in May 2025 to align AQI references with EPA’s revised AQI breakpoints. Washington requires employers to prepare a wildfire smoke response plan, provide training, monitor smoke levels, maintain communication, and implement increasing protections as PM2.5 rises. At 20.5–35.4 µg/m3, the employer must have a response plan and training in place. At 35.5–250.4 µg/m3, employers must provide respirators at no cost and implement feasible exposure controls. At higher levels, distribution and eventually required use of respirators become mandatory.

Nevada also moved into this area with SB 260, which took effect on January 1, 2026 and addresses employer protection for outdoor workers exposed to wildfire smoke. As of early March 2026, Nevada still had draft regulatory implementation activity underway, so Nevada employers should check the latest state materials rather than rely on older summaries alone.

Because wildfire smoke rules are state-specific and operational details matter, businesses should not assume that a generic wildfire emergency plan is enough. A state-specific compliance review is often the safest approach.

8) What Is A Community Wildfire Protection Plan?

A Community Wildfire Protection Plan, or CWPP, is a collaborative planning document that helps a community identify wildfire risk, set priorities, and create a practical action plan to reduce risk to homes, infrastructure, and surrounding landscapes. It is not just a paper exercise. Done well, it helps align local government, fire departments, emergency managers, land managers, utilities, schools, and residents around the same priorities.

Current U.S. Fire Administration (USFA) guidance highlights several core elements: involve stakeholders across the community, research local risk, assess infrastructure and home vulnerabilities, prioritize risk from embers and flames, create an action plan, implement projects, and revisit the plan as conditions change. The USFA also recommends reviewing and updating the plan at least every five years.

A CWPP can also help a community compete for funding. USDA’s Community Wildfire Defense Grant program supports the development or revision of CWPPs and also supports projects described in recent CWPPs.

9) What Kind Of HEPA Air Cleaner Works Best During A Smoke Event?

For a home, office, classroom, or smaller indoor area, the best portable option is generally a HEPA air cleaner that is sized correctly for the room. EPA advises using a unit with a tobacco-smoke CADR of at least two-thirds of the room’s area in square feet. If the room has a high ceiling, or if smoke is severe and frequent, a larger unit may be appropriate.

The unit should not produce ozone. Filter replacement matters too, especially during heavy smoke periods. For some situations, a properly built DIY air cleaner can also reduce indoor smoke exposure, but many businesses and public buildings will need a broader building-level strategy that includes HVAC filtration and operational controls, not just a portable unit in the corner.

For commercial and public buildings, current EPA guidance points beyond portable units to smoke-ready building operations: improve filtration where feasible, adjust HVAC settings during smoke episodes, reduce unfiltered outdoor air entry where appropriate, monitor indoor and outdoor conditions, and prepare building-specific smoke-response checklists in advance.

10) How Can FACS Help With Wildfire Planning And Smoke Response?

FACS helps clients understand and manage the impact of wildfire smoke on buildings, contents, occupants, and operations. FACS teams perform assessments for residential and commercial properties, identify smoke infiltration pathways, perform visual inspections, and collect surface dust samples for microscopic analysis to help determine severity, likely impacts, and recommended corrective actions.

That work can support property owners, schools, healthcare organizations, insurers, and businesses that need more than general advice. It can also support planning before smoke events by helping organizations think through building vulnerability, indoor air issues, operational response, and documentation.

If your business, property, school system, or community needs help preparing for wildfire smoke, evaluating smoke impact, or building a practical response strategy, FACS can help create a clear plan of action.

Call FACS at (888) 711-9998 or contact us online.