Wildfire air pollution is rising: What federal findings mean for industry compliance
Wildfires have become one of the largest drivers of elevated air pollution in the United States, and recent federal publications show that their impact is increasing in both scale and severity. EPA confirms that large and catastrophic wildfires now produce substantial increases in fine particulate matter (PM2.5) across broad regions of the country, including smoke transported from Canada and Mexico. These events are raising background PM2.5 levels and expanding the number of communities experiencing smoke each year. As these trends accelerate, industries face new challenges in compliance, permitting, and worker protection, especially as wildfire seasons grow longer and smoke events more frequent.
Federal research shows PM2.5 from wildfires increasing nationwide
EPA’s most recent wildfire smoke analysis shows clear year to year increases in PM2.5 concentrations attributed to wildfire smoke across the United States. Data from 2006–2020 demonstrate that smoke driven PM2.5 spikes are occurring more often and across a wider geographic footprint. The agency reports that national public health impacts are significant, with thousands of annual emergency room visits, hospitalizations, and deaths linked to wildfire smoke exposure.
The National Oceanographic and Atmospheric Administration’s (NOAA’s) 2025 federal wildfire smoke review supports these findings. Using space-based instrumentation GOES 19, TEMPO, and other satellite scientific tools, NOAA shows that thick smoke plumes from Canadian and U.S. fires degraded air quality across the Upper Midwest and other regions, even hundreds of miles from the fires. These satellite observations are paired with EPA ground monitors to identify high pollution zones and support air quality alerts.
Together, EPA and NOAA findings confirm that wildfire smoke is a major and rising contributor to PM2.5 levels, which is important for industries located in or downwind of wildfire prone areas.
Exceptional events
A central compliance question for industry is whether wildfire related pollution counts toward National Ambient Air Quality Standards (NAAQS) attainment. Under the Exceptional Events Rule, wildfire smoke can be excluded from NAAQS determinations if states demonstrate that exceedances were caused by an uncontrollable natural event. EPA’s wildfire smoke guidance highlights the increasing burden of documenting smoke impacts and shows how PM2.5 spikes related to fires have grown more common.
The agency acknowledges that wildfire smoke frequently pushes PM2.5 concentrations into unhealthy ranges. During the 2023 Canadian wildfire episode, for example, EPA referenced surveillance showed measurable increases in asthma related emergency room (ER) visits. Even when these pollution spikes qualify as exceptional events, they still influence public health, air quality planning, and operational decisions for industry.
At the same time, NOAA continues to refine federal smoke forecasting models used by the National Weather Service (NWS) and EPA. These models help states prepare exceptional event documentation and guide industrial contingency planning when wildfire smoke is anticipated.
Why industry EHS professionals should pay close attention
- Compliance and attainment risk: Wildfire smoke may be excluded as an exceptional event, but elevated PM2.5 levels can still push a region toward nonattainment before exclusion is approved. This creates uncertainty for industries during permit renewals, emissions modeling, and long-term facility planning. EPA’s data clearly indicate that wildfire driven PM2.5 exceedances are rising nationwide.
- Worker exposure and health risk: EPA and NOAA findings confirm that wildfire smoke carries fine particulate matter capable of worsening respiratory and cardiovascular conditions. Industries with outdoor workers must consider revised exposure protocols, respirators, and schedule adjustments during smoke episodes.
- Operational and supply chain stability: NOAA’s wildfire smoke analysis shows that smoke can travel long distances, disrupt visibility, affect logistics, and degrade regional air quality for days or weeks. Companies dependent on transportation corridors or sensitive equipment should plan for smoke related delays and monitoring.
- Community and stakeholder expectations: Even when deemed an exceptional event, wildfire smoke contributes to local risk perceptions. Facilities may face increased scrutiny, especially if their emissions interact with elevated regional PM2.5.
Bottom line for industry
Federal research shows that wildfire driven air pollution is increasing in both frequency and intensity, often raising PM2.5 concentrations across entire regions. EPA’s Exceptional Events Rule may exclude wildfire smoke from NAAQS compliance, but industries still face operational, health, and planning challenges as wildfire seasons intensify. NOAA’s satellite data confirms that smoke impacts will continue to widen under changing climate conditions.
Key to remember: For EHS professionals, wildfire smoke is no longer only a regional hazard. It is a strategic compliance and operational issue requiring enhanced monitoring, seasonal planning, and proactive communication.















































