What question did this study set out to answer?

The study aims to explore the contribution of wildfire smoke to disparities in PM2.5 exposure across different socioeconomic and racial groups in California.

February 6, 2026PLOS ClimateOpen Access

The diverging role of increasing wildfire smoke to ambient PM2.5 exposure disparity in California, 2006 to 2018

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Authors

JNJenny T. NguyenLos Angeles County Department of Public Health JCJoan A Casey TBTarik BenmarhniaScripps Institution of Oceanography

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Implication

Analysis highlights wildfire smoke as a factor in PM2.5 exposure disparities in California, suggesting a need for targeted interventions.

Key Points

The study aims to explore the contribution of wildfire smoke to disparities in PM2.5 exposure across different socioeconomic and racial groups in California.
Tracked temporal trends in PM2.5 exposure from 2006 to 2018 in California.
Evaluated population-weighted and rank-ordered changes in total, wildfire, and non-wildfire PM2.5 exposure.
Analyzed data across census tracts segmented by race, ethnicity, and socioeconomic status.
Confirmed an absolute decrease in total PM2.5 exposure over time.
Identified peaks in wildfire PM2.5 exposure in 2008 and 2018.
Disparities in PM2.5 exposure among communities remained, particularly affecting socioeconomically disadvantaged and non-Hispanic Black and Hispanic groups.

Cite This Study

Nguyen et al. (2026) studied this question.

synapsesocial.com/papers/698585cb8f7c464f230097c9 https://doi.org/10.1371/journal.pclm.0000796

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The diverging role of increasing wildfire smoke to ambient PM2.5 exposure disparity in California, 2006 to 2018

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Implication

Key Points

Cite This Study

The diverging role of increasing wildfire smoke to ambient PM2.5 exposure disparity in California, 2006 to 2018

Discussion

Member takes

Implication

Key Points

Cite This Study

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