Human study · Research · 28 Oct 2026
Smoke days at US schools rose from about 7 a year to about 54
Source: EurekAlert
What the research found
EurekAlert carried an Oregon State University release on 28 October 2026. The Environmental Research paper's journal date is 13 October 2026. Across 2006 to 2023, mean annual smoke days rose from 6.8 to 54.4 at public schools and from 9.4 to 112.2 at childcare centers. The abstract covers 115,612 schools and 131,372 childcare centers, and about 2.64 billion student-smoke-days at schools plus 1.02 billion at childcare centers in 2023. Some West Coast buildings had higher indoor fine-particle readings than the air outside on smoke days. The population is students and young children, not a young-adult trial, and sex was not split. This is an exposure study, not a treatment. Not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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