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National Weather Service API boundary

Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for National Weather Service API.

version 1.0.0freshness currentobserved 2026-08-28T04:17:38Z

resource.public-data.national-weather-service-api
sha256:b11f44b509fe863440da2118db4575c210d2bae9d16283f24cb14f653ab2a08c

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Evidence-backed facts

  1. The National Weather Service API exposes forecasts, alerts, observations, stations, points, grids, products, and related metadata using linked JSON and GeoJSON resources. informative
  2. An API key is not required, but automated clients must send an identifying User-Agent and follow reasonable request-rate and retry behavior. informative
  3. Clients must resolve point-to-grid relationships, use pagination links where present, and retain issuance, update, expiration, status, and unit metadata. informative
  4. Weather observations and forecasts can change rapidly and have spatial, temporal, and sensor limits; safety decisions must use the latest authoritative alert and local guidance. informative