Plan for a Local Area

Weather, flood, housing, and infrastructure sources for a neighborhood-scale planning prototype.

Curated by Trilemma Data · Reviewed 2026-08-20

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National Weather Service API
BeginnerSmall
Current U.S. forecasts, observations, and official weather alerts for building local planning tools and operational warning products.

First Project: Flag Risky Hours for an Outdoor Plan

EnvironmentGeoJSON +2No Key
FEMA National Flood Hazard Layer
IntermediateMedium
Effective digital flood-hazard zones for building address-level flood-risk lookups and site-selection screens.

First Project: Look Up the Effective Flood Zone for One Address Point

EnvironmentJSON +1No Key
U.S. Drought Monitor
BeginnerTiny
Weekly U.S. drought-category statistics for building local agricultural, water, and risk-monitoring tools.

First Project: Track One State's Weekly Drought Coverage

EnvironmentJSON +2No Key
HUD Fair Market Rents
BeginnerTiny
County and metro Fair Market Rents for building rent-burden screens and voucher-payment comparison tools.

First Project: Compare Two-Bedroom FMRs across One State's Counties

MarketsJSON +1Key
NREL Alternative Fuel Stations
BeginnerTiny
Alternative-fuel and EV charging station locations for building corridor maps and local charging finders.

First Project: Map Open EV Chargers in One State

GeospatialJSON +2Key
FCC National Broadband Map
IntermediateLarge
Broadband Data Collection availability filings for building local coverage screens and digital-divide comparisons.

First Project: Inventory One State's Published Availability Files

GeospatialJSON +1Key
CDC PLACES
IntermediateSmall
Modeled local health estimates for U.S. counties and smaller areas for building community-health comparisons and resource-planning tools.

First Project: Compare Modeled Diabetes Prevalence across Three Counties

HealthJSON +2No Key
OpenFEMA Disaster Declarations
BeginnerSmall
Federal disaster declarations, designated areas, incident periods, and authorized programs for building local emergency and recovery trackers.

First Project: Track Recent Declarations for One State

EnvironmentJSON +3No Key
Water Quality Portal
IntermediateSmall
Discrete water-quality sample results from USGS, EPA, and hundreds of partner agencies for building watershed monitoring and local water-quality tools.

First Project: Chart Recent Nitrate Samples at One Potomac Gauge

EnvironmentCSV +2No Key
Census Building Permits Survey
BeginnerTiny
County counts of new privately owned housing units authorized by building permits for building local housing-supply and market-sizing tools.

First Project: Rank Counties by 2025 Authorized Housing Units

MarketsCSV +1No Key