Air Pollution Statistics in US 2026 | Particles, Cities & Facts

Air Pollution in America 2026

The story of air quality in the United States in 2026 is simultaneously one of remarkable progress and persistent, urgent failure. On one hand, the long-term arc since the Clean Air Act was signed into law more than 55 years ago is unambiguous: between 1970 and 2024, total emissions of the six principal air pollutants dropped by 79 percent — even as the economy grew by 338%, vehicle miles traveled increased 195%, and the population expanded by 66%. That is an achievement with few parallels in environmental history. On the other hand, the American Lung Association’s 27th annual “State of the Air” 2026 report — based on three years of EPA-verified monitoring data from 2022 through 2024 — confirms that 152.3 million Americans, or 44% of the entire US population, still live in places that receive failing grades for unhealthy levels of ozone or particle pollution. Crucially, nearly half of all American children — 33.5 million kids, or 46% of every child in the country — live in communities that failed at least one measure of air pollution. These are not marginal failures at the edges of an otherwise clean system. They represent the stubborn, structural limits of how far emissions reductions alone can take a country when climate change, wildfires, urban density, and deep environmental inequities are all compounding the problem at once.

What makes 2026 a particularly consequential moment in the US air quality story is the collision of two powerful, opposing forces. The EPA’s “Our Nation’s Air 2025” report, covering trends through 2024, confirms that long-term pollutant concentration declines remain intact: national average concentrations of the six criteria pollutants are all substantially lower than they were in 1990. Yet since 2022, the agency has also documented that national average concentrations of carbon monoxide, ground-level ozone, and fine particle pollution have increased, driven in part by wildfires, drought, and weather patterns intensified by climate change. In 2024, approximately 64 million tons of pollution were emitted into the atmosphere in the United States — down from historical peaks but still enough to keep 109 million people living in counties with pollution above the primary National Ambient Air Quality Standards (NAAQS). The country’s air quality future, the data makes clear, depends not just on industrial and transportation emissions controls — which have delivered extraordinary results — but on whether the US can confront the wildfire crisis, accelerate the clean energy transition, and address the environmental justice gaps that have left communities of color breathing disproportionately dirtier air regardless of their income level.

Interesting Facts: Air Pollution in the US 2026

The following facts are sourced exclusively from EPA, American Lung Association “State of the Air” 2026, CDC/NCHS, Global Burden of Disease 2021, NASA, and peer-reviewed federal studies.

Source: American Lung Association “State of the Air” 2026 (data: 2022–2024, published April 2026); EPA Air Quality National Summary (February 2026); EPA “Our Nation’s Air 2025” Report (February 2026); EPA Air Pollutant Emissions Trends Data (April 2025); EPA Progress Report — Air Quality (March 2025); Global Burden of Disease 2021 — US Air Pollution Burden Study (PMC 2025); EPA — Study Finds Exposure to Air Pollution Higher for People of Color (January 2026); World Economic Forum / eBioMedicine 2025

These facts capture both the scale of progress and the depth of what remains unresolved. The 64% reduction in combined unhealthy air days between 2000 and 2024 — from 2,080 to 757 — is the kind of sustained, measurable environmental improvement that demonstrates what policy and technology investment can accomplish over decades. But with 152 million Americans still failing air quality grades and nearly half of all US children in counties with dangerous pollution levels, the word “progress” rings hollow for the tens of millions of people breathing air that federal standards identify as harmful. The wildfire complication is particularly consequential: even while industrial and transportation emissions continue to decline through increasingly effective controls, wildfire smoke — driven by climate change — is undoing gains in ozone and PM2.5 concentrations in ways that no tailpipe standard can address. The air quality story of 2026 cannot be fully told without confronting this new, climate-driven variable.

National Air Pollution Emission Trends in the US 2026

US Air Pollutant Emission Trends — 1970 to 2024 (EPA Data)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Total 6-Pollutant Emissions Reduction (1970–2024):  ▼ 79%
Air Toxics Reduction (1990–2017):                   ▼ 74%

Pollutant Concentration Declines since 1990 (EPA "Our Nation's Air 2025"):
  SO2:      ▼ ~94%  (1980–2022)  ████████████████████████████████████████ →  █
  NOx:      ▼ ~60%+ (1990–2024)  ████████████████████████░░░░░░░░░░░░░░░░ → ████
  PM2.5:    ▼ ~43%  (2000–2024)  ████████████████████░░░░░░░░░░░░░░░░░░░░ → ██████
  CO:       ▼ ~83%  (1990–2024)  █████████████████████████████████░░░░░░░ →  ████
  Lead (Pb):▼ ~98%  (1980–2005)  ████████████████████████████████████████ →   █
  Ozone:    ▼ ~22%  (1990–2024)  ████████████░░░░░░░░░░░░░░░░░░░░░░░░░░░░ → ██████

Total 2024 Emissions:  ~64 million tons (all 6 criteria pollutants)
Americans above primary NAAQS (2024):  ~109 million

EPA AQI Unhealthy Days (ozone + PM2.5 combined):
  2000:  2,080 days ████████████████████████████████████████
  2010:  ~1,400 days ████████████████████████████░░░░░░░░░░░░
  2024:    757 days ███████████████░░░░░░░░░░░░░░░░░░░░░░░░░  ▼ 64%

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: EPA Air Quality National Summary (February 2026); EPA “Our Nation’s Air 2025” — Trends Through 2024 (February 2026); EPA Air Pollutant Emissions Trends Data (April 2025); EPA Progress Report — Air Quality: Power Sector (March 2025); EPA Annual Air Report News Release (August 2024)

The long-term trajectory of US air pollution emissions is one of the most successful environmental stories in the country’s history — and the 2026 data from the EPA confirms it remains intact. Between 1970 and 2024, the United States reduced total emissions of its six principal air pollutants by 79 percent, achieving this remarkable result during a period when the economy grew by more than three times, vehicle miles on US roads nearly tripled, and the population expanded by two-thirds. SO2 — a major precursor to particle pollution and acid rain — dropped 94% from 1980 levels, driven by the Acid Rain Program, cross-state pollution rules, and the rapid decline of coal-fired power generation. Lead in ambient air dropped 98%, almost entirely the result of the phase-out of leaded gasoline — arguably the single most effective air quality intervention in US history. The combined reduction in unhealthy air days from 2,080 in 2000 to 757 in 2024 represents a 64% improvement in the number of days when millions of Americans were advised to limit outdoor activities.

Yet the most important contextual note in the entire 2026 EPA “Our Nation’s Air” report is also the most alarming: since 2022, national average concentrations of carbon monoxide, ground-level ozone, and fine particle pollution have increased, reversing short-term trend improvements from the prior years. The EPA is explicit that this reversal is not driven by industrial or transportation emissions — which continue to decline through increasingly robust regulatory controls. It is driven by wildfires, drought, and weather patterns whose frequency and intensity are tied to climate change. This means the US is now in a situation where its traditional pollution control toolkit — vehicle standards, power plant rules, industrial permits — is delivering real ongoing reductions, while a parallel and growing climate-driven pollution source is partially offsetting those gains. It is a public health problem that requires a climate solution, not just an emissions one.

PM2.5 Particle Pollution Statistics in the US 2026

PM2.5 Fine Particle Pollution — US 2022–2024 (ALA State of the Air 2026)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Americans earning F grade for SHORT-TERM particle pollution (2022–2024):
  2022–2024 report:  ████████████████████████ 61.5 million people
  vs last year's:    ████████████████████████████ 77.1 million  ← 15.6M improvement

Americans with year-round particle pollution above federal standard:
  Receiving any F grade for year-round PM2.5:  Significant share of population

CURRENT EPA Annual PM2.5 Standard (revised 2024):  9 µg/m³
Former standard (1997–2024):                       12 µg/m³

Worst cities for year-round particle pollution:
  #1 Bakersfield–Delano, CA (7th consecutive year)
  #2 Visalia, CA
  #3 Fresno–Hanford–Corcoran, CA
  Fairbanks, AK (NEW) = worst for short-term spikes

PM2.5-attributable US mortality (GBD 2021 data):
  IHD deaths:  23,433 in 2021  (down from 79,684 in 1990 — ▼ 70.6%)
  Total PM2.5 mortality burden:  Declined 80.5% (1990–2021)

Wildfire PM2.5 deaths (US):  ~1,700 per year / ~6,200 respiratory hospital visits

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: American Lung Association “State of the Air” 2026 (April 2026); EPA “Our Nation’s Air 2025” (February 2026); EPA National Summary (February 2026); Global Burden of Disease 2021 US State-Level Study (PMC/Frontiers, 2025); Science Advances — PM2.5 excess deaths range (EPA-funded Tessum et al.); eBioMedicine 2025 (wildfire PM2.5 health impacts)

Fine particle pollution — PM2.5 — remains the most dangerous and pervasive air quality threat in the United States in 2026, and the latest data presents a genuinely mixed picture. The improvement in short-term particle pollution is real and significant: 61.5 million Americans live in F-grade counties for short-term PM2.5 spikes, down from 77.1 million in last year’s report — a reduction of 15.6 million people, ending a seven-year stretch of continuous increases. This improvement reflects both better emission controls and favorable weather patterns in parts of the West that reduced wildfire smoke exposure during 2022–2024 compared to the worst fire years. California continues to dominate the most-polluted lists: Bakersfield, Visalia, Fresno, Sacramento, and the San Francisco Bay Area all rank among the top most-polluted metros for year-round fine particle pollution, a pattern rooted in geography (valley topography trapping pollution), climate (dry conditions intensifying fire risk), and transportation emissions from the nation’s most populous state.

The EPA’s tightening of the annual PM2.5 standard from 12 to 9 µg/m³ in 2024 is a landmark public health action that immediately expanded the number of counties classified as failing year-round standards — reflecting updated science on the harm that occurs at lower concentrations. The long-term health trend data from the Global Burden of Disease 2021 study is the most encouraging piece of PM2.5 news: PM2.5-attributable mortality in the US has declined 80.5% since 1990, with ischemic heart disease deaths attributable to fine particles falling from nearly 80,000 annually to just 23,433. That represents hundreds of thousands of lives saved over the past three decades — a direct result of the Clean Air Act and the regulatory architecture built around it. The challenge of 2026 is to protect and extend those gains in the face of a wildfire problem that existing regulatory tools were not designed to address.

Ozone Pollution Statistics in the US 2026

Ozone (Smog) Pollution — US 2022–2024 (ALA State of the Air 2026)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

People breathing more unhealthy ozone (vs last year's report):  +~4 million
Ozone worsened in: Los Angeles and multiple metros nationwide

Top 5 Most Ozone-Polluted Cities (ALA 2026):
  #1  Los Angeles–Long Beach, CA  (worst for ozone in 26 of 27 years)
  #2  Visalia, CA
  #3  Bakersfield–Delano, CA
  #4  Phoenix–Mesa, AZ
  #5  Fresno–Hanford–Corcoran, CA

9th Worst: Dallas–Fort Worth, TX (F grade, 9 days/year average, worsened)

Health effect: "Sunburn on the lungs" — inflammation of airways
Ozone reductions (1990–2024):  ~22% decline in national concentrations
Current EPA 8-hour ozone standard:  70 ppb (2015 standard)
Climate change effect: Warms atmosphere → enhances ozone formation
Ozone-related US COPD deaths: Minimal decline despite falling ozone (GBD 2021)

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: American Lung Association “State of the Air” 2026 Key Findings and Most Polluted Cities (April 2026); EPA “Our Nation’s Air 2025” (February 2026); Global Burden of Disease 2021 US State-Level Disease Burden Study (PMC, 2025); ALA State of the Air 2026 Texas Press Release (April 2026)

Ground-level ozone — the smog that forms when vehicle exhaust, industrial emissions, and other pollutants react with sunlight and heat — is getting worse in 2026, not better. While the long-term trend from 1990 to 2024 shows a national average ozone reduction of about 22%, the American Lung Association’s 2026 report documents that approximately 4 million more people are now breathing unhealthy ozone levels compared to last year’s report — a regression that reflects both warming temperatures and the specific meteorological conditions of 2022–2024. Los Angeles has ranked as the most ozone-polluted metropolitan area in 26 of the 27 years since the State of the Air report began — a grim milestone that reflects the city’s unique combination of car culture, topography, and sun. Phoenix’s emergence as the fourth most ozone-polluted city underscores how the desert Southwest’s extreme heat is increasingly supercharging ozone formation in cities that previously were not among the worst.

The climate dimension of ozone is perhaps its most important policy challenge in 2026. Unlike PM2.5 — where wildfire smoke is the primary climate-driven complicating factor — ozone has a direct thermodynamic relationship with temperature: hotter air accelerates the chemical reactions that produce ozone. This means that even if the US achieved zero additional emissions from transportation and industry, ongoing warming would continue to push ozone concentrations upward in heat-affected cities. The GBD 2021 data’s finding that ozone-related COPD deaths showed minimal decline despite falling ozone concentrations further signals a troubling disconnect: the ozone concentrations that remain may be causing proportionally more harm than previously modeled, particularly at the lower end of the exposure range. The Dallas–Fort Worth metro area’s worsening ozone ranking to 9th worst nationally — with 5.47 million children in Texas breathing unhealthy air — is a concrete illustration of how ozone is spreading beyond its traditional California and urban Northeast epicenters.

Most Polluted & Cleanest Cities for Air Quality in the US 2026

ALA State of the Air 2026 — City Rankings (Data Period: 2022–2024)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

MOST POLLUTED — OZONE (Worst 5):
  1. Los Angeles–Long Beach, CA     ██████████████████████████ (26/27 yrs worst)
  2. Visalia, CA                    █████████████████████░░░░░
  3. Bakersfield–Delano, CA         ████████████████████░░░░░░
  4. Phoenix–Mesa, AZ               ████████████████████░░░░░░
  5. Fresno–Hanford–Corcoran, CA    ███████████████████░░░░░░░

MOST POLLUTED — YEAR-ROUND PM2.5 (Worst 5):
  1. Bakersfield–Delano, CA         ██████████████████████████ (7th yr worst)
  2. Visalia, CA                    █████████████████████░░░░░
  3. Fresno–Hanford–Corcoran, CA    ████████████████████░░░░░░
  4. Sacramento–Roseville, CA       ████████████████████░░░░░░
  5. San Jose–San Francisco, CA     ███████████████████░░░░░░░

MOST POLLUTED — SHORT-TERM PM2.5 (NEW leader):
  1. Fairbanks, AK                  ██████████████████████████ (NEW #1)
  Previous #1: Bakersfield, CA

CLEANEST CITIES:
  For ozone + short-term PM2.5 + year-round PM2.5 combined:
  Only ONE US city ranks on ALL THREE cleanest lists
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: American Lung Association “State of the Air” 2026 — Key Findings, Most Polluted Cities, Most Polluted Places, and Cleanest Cities pages (April 2026); ALA Texas Press Release (April 2026)

The 2026 city-level air quality rankings from the American Lung Association’s State of the Air report tell a story that is both geographically predictable and contextually alarming. California’s dominance of the most-polluted lists for both ozone and year-round particle pollution reflects a combination of factors that go beyond any single source: the state’s valley geography traps pollutants in topographic bowls; its extreme wildfire seasons generate particle pollution that dwarfs industrial sources in bad fire years; and its sheer population and vehicle concentration means that even with the nation’s strictest vehicle emission standards, the raw volume of transportation emissions in the Los Angeles Basin sustains ozone formation that no regulation has yet been able to eliminate. Bakersfield has ranked as the worst city for year-round PM2.5 for seven consecutive years — a designation that reflects both the San Joaquin Valley’s notorious inversion layers and the concentration of agricultural dust, diesel freight, and wildfire smoke in a region where low-income, predominantly Latino farmworker communities bear the brunt of the health consequences.

Fairbanks, Alaska’s emergence as the new worst city for short-term PM2.5 spikes is a reminder that air pollution is not exclusively a function of industrial or urban density. Fairbanks’s extreme cold drives heavy wood burning for home heating — and its subarctic geography creates temperature inversions that trap wood smoke and vehicle exhaust at ground level, sometimes for weeks. The fact that only one US city ranks on all three cleanest lists — for ozone, year-round PM2.5, and short-term PM2.5 simultaneously — underscores how difficult it is to achieve clean air across all pollutant dimensions in a country where different regions face fundamentally different pollution challenges. The expanding presence of Texas metros on the most-polluted lists in 2026, with Dallas–Fort Worth at 9th worst for ozone and Houston newly appearing on the rankings, points toward a Sun Belt air quality problem that will only intensify as temperatures climb.

Air Pollution Health Effects Statistics in the US 2026

Air Pollution Health Effects — US 2021–2026 Data
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

PM2.5 Estimated Annual Excess Deaths (US):  85,000–200,000/year
Wildfire PM2.5 Deaths (US):                ~1,700/year
Wildfire-related respiratory hospital visits: ~6,200/year

Leading PM2.5-attributable causes of death (GBD 2021 / WHO):
  Ischemic Heart Disease:   68% of PM2.5 deaths (globally)
  Stroke:                   ██████████████████████████ 
  COPD:                     ████████████████░░░░░░░░░░ 14%
  Lower respiratory:        ████████████████░░░░░░░░░░ 14%
  Lung cancer:              ████░░░░░░░░░░░░░░░░░░░░░░  4%

US PM2.5-attributable mortality trend (GBD 2021):
  1990:  ~baseline (index 100%)
  2000:  ~significant reduction
  2021:  ▼ 80.5% from 1990

Health effects of air pollution:
  Asthma attacks    ████████████████████████████
  Heart attacks     ████████████████████████████
  Strokes           ████████████████████████████
  Preterm births    ████████████████████████
  Lung cancer       ████████████████████
  Cognitive impairment  █████████████████

Population-level US air quality economic benefit:
  ~$2 trillion in economic production benefits vs ~$65B invested (NASA estimate)

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: ALA “State of the Air” 2026 (April 2026); GBD 2021 US Air Pollution State-Level Study (PMC/Frontiers, 2025); Science Advances — PM2.5 disproportionate exposure study (EPA-funded); eBioMedicine 2025 — wildfire air pollution health impact review; NASA Health Impacts of Air Quality page; Clarity.io — Economic Impacts of Air Pollution (citing peer-reviewed sources)

The health burden of air pollution in the United States in 2026 carries two very different timelines within the same data. The long-run timeline is one of profound improvement: the 80.5% decline in PM2.5-attributable mortality since 1990 represents one of the most significant reductions in preventable death ever achieved through environmental policy in any country. Ischemic heart disease deaths linked to fine particles fell from nearly 80,000 per year to 23,433 — a number that reflects hundreds of thousands of lives extended through three decades of incremental but relentless regulatory progress. The $2 trillion in annual economic production benefits estimated by NASA against roughly $65 billion invested in air quality programs makes the cost-benefit case for clean air investment overwhelming by any measure.

The short-run timeline, however, is more troubling. The GBD 2021 finding that diabetes-related disability-adjusted life years attributed to PM2.5 surged 97.4% since 1990 — nearly doubling, even as cardiovascular deaths fell sharply — signals that PM2.5’s relationship with metabolic disease is a growing and underrecognized health burden. The wildfire contribution is now a permanent, worsening feature of the US air quality health landscape: 1,700 PM2.5-related deaths per year from wildfire smoke alone, plus thousands of respiratory hospitalizations, represent a category of harm that did not feature prominently in air quality health analyses a decade ago and now cannot be ignored. The $7.9 billion in annual ozone-related health costs generated when fossil fuel emissions combine with elevated temperatures further illustrates how climate change is transforming air pollution from a problem of smokestacks and tailpipes into a problem of thermodynamics — one where the health solutions and the climate solutions are inseparable.

Air Pollution & Environmental Justice Disparities in the US 2026

Air Pollution Exposure by Race/Ethnicity — US (Multiple Studies)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

PM2.5 Exposure Disparity (Tessum et al. — EPA-funded, Science Advances):
  People of color: Exposed to DISPROPORTIONATELY HIGH PM2.5 from EVERY major
                   emission sector — regardless of income, region, or state

Racial disparity is INDEPENDENT of income:
  "Race/ethnicity, independently of income, drives air pollution disparities"
  — EPA statement on Tessum et al. study

Harvard Chan / Nature (2022) — 17-year disparity analysis:
  Racial/ethnic minorities: Consistently higher fine particulate exposure
  Inequalities persist across all income levels

GBD 2021 IHD mortality — males vs females:
  IHD mortality rates from PM2.5: Men 1.8x higher than women

ALA 2026 — People of color explicitly identified as at-risk group:
  Higher exposure + greater response to pollution + less healthcare access

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: EPA — Study Finds Exposure to Air Pollution Higher for People of Color Regardless of Region or Income (January 2026 — citing Tessum et al., Science Advances); ALA Disparities in the Impact of Air Pollution; Harvard T.H. Chan School of Public Health — Racial, Ethnic Minorities and Low-Income Groups Exposed to Higher Air Pollution (citing Nature 2022); GBD 2021 US Air Pollution Study (PMC, 2025); ALA “State of the Air” 2026 Key Findings; ALA Texas Press Release (April 2026); Nature Communications 2024 — Environmental Justice Analysis of US Air Pollution Emissions 1970–2010

Environmental justice — the principle that all Americans deserve equal protection from pollution regardless of race or income — remains one of the most persistently unmet commitments in US air quality policy. The evidence base in 2026 is now so robust that it leaves no room for doubt: people of color in the United States are exposed to disproportionately high levels of fine particle pollution not because of where they choose to live, not because of their income levels, and not because of any factor they control — but because nearly every major emission sector in the American economy systematically generates more PM2.5 exposure for racial and ethnic minority communities. This is the central finding of the EPA-funded study by Tessum and colleagues, published in Science Advances and highlighted by the EPA itself: racial disparity in PM2.5 exposure is independent of income. A Black American family and a white American family at the same income level face different air quality burdens. That is environmental injustice by definition.

The Harvard Chan School’s 17-year analysis — covering over 73,000 ZIP code tabulation areas and published in Nature — confirmed the same pattern with longitudinal data: racial and ethnic minorities face consistently higher fine particulate exposure across nearly two decades, and those inequalities have not been meaningfully narrowed by overall PM2.5 reductions. The Nature Communications 2024 environmental justice analysis found that counties with higher median incomes experienced larger relative pollution declines under the Clean Air Act — meaning the benefits of environmental regulation have not been evenly distributed. As the American Lung Association’s 2026 report explicitly warns, recent actions by the EPA to roll back clean air protections and eliminate health costs from economic analyses threaten to reverse decades of progress — and those reversals will fall hardest on the communities of color and lower-income populations that have historically faced the greatest pollution burdens.

Air Pollution & Wildfire Impact Statistics in the US 2026

Wildfire Air Pollution — US Impact (2022–2026 Data)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Wildfire smoke global landscape fires — PM2.5 share: 77.6% of 1.53M deaths
US wildfire smoke annual deaths:         ~1,700 per year
US wildfire respiratory hospital visits: ~6,200 per year
US wildfire smoke annual economic cost:  ~$16 billion/year

Wildfires & EPA trends (2022–2024):
  Ozone concentrations:   ↑ Increased nationally since 2022
  PM2.5 concentrations:   ↑ Increased nationally since 2022
  CO concentrations:      ↑ Increased nationally since 2022

  → Driven by wildfires, weather, exceptional events
  → Even as industrial/transportation emissions CONTINUED TO DECLINE

ALA 2026 — Western improvement note:
  "Short-term PM2.5 improved in much of the West" in 2022–2024 study period
  Bakersfield displaced from worst short-term spot by Fairbanks, AK

January 2025 — Los Angeles wildfires:
  Loss of homes, lives, and massive PM2.5 air quality emergency
  Highlighted the "substantial lingering human health hazard" of wildfire smoke
  — eBioMedicine, February 2025

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Source: ALA “State of the Air” 2026 (April 2026); eBioMedicine 2025 — Wildfires, Smog, and the Persistent Threat of Air Pollution to Human Health (February 2025); Lancet December 2024 — Global Deaths from Landscape Fires; EPA “Our Nation’s Air 2025” (February 2026); World Economic Forum (citing wildfire health impact research)

Wildfire smoke has emerged in the 2020s as the defining complicating factor in US air quality — and the 2026 data confirms it is not going away. The January 2025 Los Angeles wildfires — which forced evacuations across some of the most densely populated areas in the country, destroyed thousands of homes, and generated PM2.5 concentrations at emergency levels for days — put a human face on a statistical trend that EPA monitoring has been tracking for years. The EPA’s “Our Nation’s Air 2025” report explicitly states that since 2022, national average concentrations of ozone, PM2.5, and carbon monoxide have increased — not because of more industrial emissions, which have continued to decline, but because of wildfire activity, drought, and weather patterns that reflect a warming climate. This creates a frustrating and genuinely new challenge for US air quality policy: the regulatory tools that have successfully driven down emissions from power plants, vehicles, and industry are not designed to address a source that operates across hundreds of thousands of acres beyond any permitting system.

The Lancet’s December 2024 health impact assessment put the global landscape fire burden at 1.53 million deaths per year, with PM2.5 accounting for 77.6% of those deaths. In the United States specifically, wildfire smoke kills an estimated 1,700 people per year and hospitalizes roughly 6,200 more for respiratory conditions — while costing the economy approximately $16 billion annually in healthcare costs, lost productivity, and property damage. The irony of the Fairbanks, Alaska situation — where wood burning for heating rather than wildfire has made a subarctic city the worst in the nation for short-term PM2.5 spikes — illustrates that combustion-based PM2.5 emergencies come from multiple directions. For the millions of Americans in wildfire-prone Western states, in growing Southern cities, and in rural communities that are last to benefit from clean energy transitions, the air quality fight of 2026 is inseparable from the climate fight.

Disclaimer: This research report is compiled from publicly available sources. While reasonable efforts have been made to ensure accuracy, no representation or warranty, express or implied, is given as to the completeness or reliability of the information. We accept no liability for any errors, omissions, losses, or damages of any kind arising from the use of this report.

Email ID:

Please enable JavaScript in your browser to complete this form.

Email

Email *

SUBSCRIBE