NWS api.weather.gov — API status & change history

US National Weather Service forecast and alert API

Last checked 2026-09-18 00:10 UTC — HTTP 200, 185 ms. Availability over 30 days of data: 100.00%.

Auth: none · HTTPS: yes · Docs

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Shape history

Nothing confirmed yet · 1 signal on record. A change confirms after it survives three consecutive polls.

• 2026-08-01 warning latency degraded confirming…

Current response shape

{
  "@context": [
    "mixed"
  ],
  "geometry": {
    "coordinates": [
      "number"
    ],
    "type": "string"
  },
  "id": "string",
  "properties": {
    "@id": "string",
    "@type": "string",
    "astronomicalData": {
      "astronomicalTwilightBegin": "string",
      "astronomicalTwilightEnd": "string",
      "civilTwilightBegin": "string",
      "civilTwilightEnd": "string",
      "nauticalTwilightBegin": "string",
      "nauticalTwilightEnd": "string",
      "sunrise": "string",
      "sunset": "string",
      "transit": "string"
    },
    "county": "string",
    "cwa": "string",
    "fireWeatherZone": "string",
    "forecast": "string",
    "forecastGridData": "string",
    "forecastHourly": "string",
    "forecastOffice": "string",
    "forecastZone": "string",
    "gridId": "string",
    "gridX": "number",
    "gridY": "number",
    "nwr": {
      "areaBroadcast": "string",
      "pointBroadcast": "string",
      "sameCode": "string",
      "transmitter": "string"
    },
    "observationStations": "string",
    "radarStation": "string",
    "relativeLocation": {
      "geometry": {
        "coordinates": [
          "number"
        ],
        "type": "string"
      },
      "properties": {
        "bearing": {
          "unitCode": "string",
          "value": "number"
        },
        "city": "string",
        "distance": {
          "unitCode": "string",
          "value": "number"
        },
        "state": "string"
      },
      "type": "string"
    },
    "timeZone": "string",
    "type": "string"
  },
  "type": "string"
}

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