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ZIP3-Level Daily and Hourly Average Population-Weighted PM2.5 and Daily Maximum Smoke Density, Contiguous and Western US, 2017-2018

Published by U.S. EPA Office of Research and Development (ORD) | U.S. Environmental Protection Agency | Metadata Last Checked: June 27, 2025 | Last Modified: 2021-09-10
The ZIP3-level PM2.5 and smoke density exposure estimates used in the manuscript: "The Effects of Short-Term Wildfire Smoke and PM2.5 Exposure on Cognitive Performance in US Adults." Datasets include: (1) ZIP3-level daily and hourly average population-weighted PM2.5 estimates (2) ZIP3-level daily maximum smoke density The PM2.5 datasets are available for the contiguous US for January 1, 2017 to December 31, 2018 (877 ZIP3s with 730 daily and 17,520 hourly estimates each). The smoke density dataset is available for the western US (OR, CA, WA, ID, NV, MT) for January 1, 2017 to December 31, 2018 (105 ZIP3s with 730 daily values each).

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