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Rating

Low Heat Impact

Scale55-100

Higher values are better.

About This Ranking

Goal

Highlight places with lower recurring outdoor heat impact by combining humidity-amplified apparent-heat persistence with hot-day frequency and annual cooling demand.

Sources

Data behind the rating

5 sources
Data
NOAA NCEI 1991-2020 annual/seasonal and hourly station normals matched from a representative named-community point using nearby-station distance and elevation fit.
What it tells us
Provides typical hourly dampness, sticky-air, heat-index, and wind conditions from nearby stations, not indoor measurements, current weather, or a hyperlocal microclimate.
Data
NOAA NCEI 1991-2020 station normals matched to places using nearby stations, with distance and elevation mismatch penalties.
What it tells us
Provides typical annual heat, cold, precipitation, and snowfall conditions from nearby weather stations, not a block-level microclimate or future climate projection.
Data
NWS apparent-temperature method combining air temperature and relative humidity under shaded, light-wind assumptions.
What it tells us
Makes humidity-amplified heat visible, but does not model direct sun, strong wind, activity, clothing, health vulnerability, or indoor exposure.

USGS Geographic Names Information System (GNIS)

Current dedicated Target Elevation fact run
Data
Official Populated Place coordinates and Census place codes used to select a community-core point instead of a potentially unrepresentative boundary centroid.
What it tells us
Identifies the named settlement point sampled for elevation; unmatched places and a documented reviewed geography exception retain their Census internal point explicitly.

USGS 3D Elevation Program (3DEP)

Current dedicated Target Elevation fact run
Data
Bilinear terrain-elevation sample at the representative community coordinate selected for each place, with a small nearby-sample fallback for exact no-data cells.
What it tells us
Provides the representative place elevation used to measure distance from the selected target; it does not describe the full elevation range within the place.

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