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National Weather Service Gridpoints API

The Gridpoints API from National Weather Service — 4 operation(s) for gridpoints.

National Weather Service Gridpoints API is one of 13 APIs that National Weather Service publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Gridpoints. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 4 operations across 4 paths, and defines 31 schemas. It is described by OpenAPI 3.1.2, at version 3.8.1.

Requests are made against a single base URL, https://api.weather.gov.

4 operations 4 paths 31 schemas 4 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.2
API Version
3.8.1
Base URL
https://api.weather.gov/
Authentication
API Key, API Key
Resource Areas
1

Authentication & Security 2

National Weather Service Gridpoints API declares 2 security schemes for authenticating requests. An API key is passed in the header as User-Agent (userAgent). An API key is passed in the header as API-Key (apiKeyAuth). By default, every request must be authenticated.

  • userAgent — We require that all consumers of the API include a User-Agent header in requests. This is due to a high number of scripts exhibiting abusive behavior (intentio…
  • apiKeyAuth — We are testing including a more traditional API Key system on certain endpoints. This is due to a large change in the weather.gov site. The API remains open an…

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 GET. Each is listed below with its method, path, parameters, and response codes.

Gridpoints 4
GET
/gridpoints/{wfo}/{x},{y}
Returns raw numerical forecast data for a 2.5km grid area
gridpoint 3 params → 200default
GET
/gridpoints/{wfo}/{x},{y}/forecast
Returns a textual forecast for a 2.5km grid area
gridpoint_forecast 5 params → 200default
GET
/gridpoints/{wfo}/{x},{y}/forecast/hourly
Returns a textual hourly forecast for a 2.5km grid area
gridpoint_forecast_hourly 5 params → 200default
GET
/gridpoints/{wfo}/{x},{y}/stations
Returns a list of observation stations usable for a given 2.5km grid area
gridpoint_stations 4 params → 200default

Schemas 31

The contract defines 31 schemas that model the data the API accepts and returns. The most detailed are GridpointHourlyForecastPeriod (17 properties), ObservationStation (15 properties), Gridpoint12hForecastPeriod (15 properties), Gridpoint (13 properties). Each schema is shown below with its type and property counts.

ObservationStation
object
15 properties
GridpointHourlyForecastJsonLd
GeoJsonFeatureCollection
object
A GeoJSON feature collection. Please refer to IETF RFC 7946 for information on the GeoJSON format.
3 properties 2 required
GeoJsonGeometry
A GeoJSON geometry object. Please refer to IETF RFC 7946 for information on the GeoJSON format.
ObservationStationCollectionGeoJson
JsonLdContext
GeometryString
stringnull
A geometry represented in Well-Known Text (WKT) format.
GeoJsonFeature
object
A GeoJSON feature. Please refer to IETF RFC 7946 for information on the GeoJSON format.
5 properties 3 required
GeoJsonCoordinate
array
A GeoJSON coordinate. Please refer to IETF RFC 7946 for information on the GeoJSON format.
Gridpoint12hForecast
object
A multi-day forecast for a 2.5km grid square.
9 properties
GeoJsonLineString
array
A GeoJSON line string. Please refer to IETF RFC 7946 for information on the GeoJSON format.
PaginationInfo
object
Links for retrieving more data from paged data sets
1 property 1 required
NWSForecastOfficeId
string
Three-letter identifier for a NWS office.
ProblemDetail
object
Detail about an error. This document conforms to RFC 7807 (Problem Details for HTTP APIs).
6 properties 6 required
UnitOfMeasure
string
A string denoting a unit of measure, expressed in the format "{unit}" or "{namespace}:{unit}". Units with the namespace "wmo" or "wmoUnit" are defined in the W…
Gridpoint12hForecastJsonLd
GridpointQuantitativeValueLayer
object
A gridpoint layer consisting of quantitative values (numeric values with associated units of measure).
2 properties 1 required
GridpointGeoJson
GridpointForecastUnits
string
Denotes the units used in the textual portions of the forecast.
GeoJsonPolygon
array
A GeoJSON polygon. Please refer to IETF RFC 7946 for information on the GeoJSON format.
ISO8601Interval
A time interval in ISO 8601 format. This can be one of: 1. Start and end time 2. Start time and duration 3. Duration and end time The string "NOW" can also be…
Gridpoint12hForecastPeriod
object
An object containing forecast information for a specific time period (generally 12-hour or 1-hour).
15 properties
GridpointHourlyForecast
object
An hourly forecast for a 2.5km grid square.
9 properties
GridpointJsonLd
ObservationStationCollectionJsonLd
object
4 properties
QuantitativeValue
object
A structured value representing a measurement and its unit of measure. This object is a slightly modified version of the schema.org definition at https://schem…
5 properties
Gridpoint12hForecastGeoJson
GridpointHourlyForecastPeriod
object
An object containing forecast information for a specific time period (generally 12-hour or 1-hour).
17 properties
Gridpoint
object
Raw forecast data for a 2.5km grid square. This is a list of all potential data layers that may appear. Some layers may not be present in all areas. temperatur…
13 properties
GridpointHourlyForecastGeoJson
GeoJsonBoundingBox
array
A GeoJSON bounding box. Please refer to IETF RFC 7946 for information on the GeoJSON format.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

national-weather-service-gridpoints-api-openapi.yml Raw ↑

Other APIs National Weather Service publishes across the network.

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National Weather Service Aviation API
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National Weather Service Icons API
National Weather Service Offices API
National Weather Service Points API
National Weather Service Products API
National Weather Service Radar API
National Weather Service Radio API
National Weather Service Stations API
National Weather Service Thumbnails API
National Weather Service Zones API