Spatial Aggregations of USHAP PM2.5 dataset

USHAP (US High Air Pollutants) is a high-resolution, full-coverage dataset of ground-level air pollution across the U.S. from 2000 to 2020 (Wei et al., LPH, 2023). USHAP integrates ground measurements, satellite observations, reanalysis data, and model outputs using Artificial Intelligence techniques that account for the spatiotemporal complexity of air pollution. This dataset provides spatially aggregated USHAP PM2.5 estimates by converting raster-based 1 km resolution air pollution data into polygonal representations. The aggregations are available across the U.S. at daily, monthly, and yearly timesteps from 2000–2020 at the zip code tabulation area (ZCTA) level.