A peer-reviewed study published in Science on June 4, 2026, finds that wildfire smoke has reversed roughly a decade of air-quality gains across the continental United States. Using high-resolution grid modeling, University of Iowa researchers show that surface ozone levels have risen over the past ten years as carbon monoxide and nitrogen oxides from fires react with sunlight to form ozone. The analysis attributes more than 300 additional premature deaths annually since 2013 to wildfire-driven ozone, with marked increases during the 2020, 2021, and 2023 fire seasons. Smoke-related pollutants now affect regions far from fires, including the Midwest, as the 2026 spring wildfire season reaches historic levels nationwide.
Prepared by Olivia Bennett and reviewed by editorial team.
El humo de los incendios forestales no es solo un problema local. Está elevando los niveles de ozono en todo el país, afectando la calidad del aire incluso en el Medio Oeste. Esto significa más riesgos para la salud, especialmente para las personas con problemas respiratorios. Consulta regularmente tu índice de calidad del aire local, especialmente durante la temporada de incendios forestales.
Los incendios forestales están deshaciendo una década de progreso en la calidad del aire, provocando cientos de muertes prematuras al año. Es un problema nacional que necesita atención urgente. Esto no se trata solo de bosques que arden, se trata de nuestra salud. Vale la pena reenviarlo si conoces a alguien con problemas respiratorios.
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