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Log10‐transformed daily average PM2.5 concentration (μg/m3) between April 1 and September 30 in the Anchorage, Fairbanks, and Matanuska‐Susitna regions between 2015 and 2019. Lines mark the long‐term (2008–2019) monthly average in each community and dots mark wildfire smoke days, as defined for this study.
