Protecting Children from Wildfire Smoke: Local Approaches to Improving Indoor Air Quality

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Recent severe smoke events demonstrate the scale and reach of wildfire smoke as a growing climate hazard and an increasingly national threat. One particularly vulnerable group is children. Because people spend approximately 90% of their time indoors, schools and childcare facilities can play a critical protective role, but many are not equipped to filter the fine particulate matter in wildfire smoke.

Indoor air quality (IAQ)—the condition of the air inside buildings, including concentrations of several pollutants that affect health—can deteriorate when wildfire smoke enters through windows, doors, and ventilation systems. As of 2020, as many as one in three public K-12 schools needed improvements to ventilation and related building systems. Although no comparable national assessment exists for childcare facilities, state infrastructure programs funded through temporary COVID-19 relief funds indicate similar widespread need within the sector.

Using childcare facilities as a case study, this paper examines how programs in Arizona, Oregon, and Massachusetts directed limited resources toward building improvements and what those efforts reveal about the support needed to achieve meaningful progress.