National Neighborhood Data Archive (NaNDA): PRISM Climate of Census Tracts, United States, 1981-2024

The PRISM NaNDA dataset provides daily weather data—minimum temperature (tmin), maximum temperature (tmax), and precipitation (ppt)—for all census tracts in the contiguous United States (CONUS) from 1981 to 2024. These data are derived from Oregon State University’s PRISM Climate Group (Northwest Alliance for Computational Science &amp; Engineering &amp; Oregon State University, 2025), which produces high-resolution (4 km x 4 km) gridded climate estimates.In addition to daily values, the dataset includes two types of annual tract-level summary measures:Percentiles (0.5th, 1st, 5th, 95th, 99th, and 99.5th), calculated using a rolling 10-year window of historical data, available for tmin, tmax, and ppt. Percents, representing the proportion of days per year that fall above or below these percentile thresholds, available for tmin and tmax only.These features enable robust analyses of long-term environmental trends, extreme weather events, and their potential impacts on population health.<br>