Aviation Weather Center API

aviationweather.gov

Read-only live METAR observations from AviationWeather.gov by one or more ICAO station identifiers. The API provides latest observations and recent source history with raw reports, structured weather fields, explicit units and UTC timestamp meanings; valid stations without reports, invalid station identifiers, and upstream failures are distinguished.

weather
aviation
METAR
observations
ICAO

Connect your agent Call over HTTP

2 endpointsDocs updated Sep 22, 2026

Endpoint health

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Metars latestLoading

Metars historyLoading

Connect your agent

Connect through MCP so your agent can find this API, read its docs, and call its endpoints.

Your agent

Setup guide

Add the server from your terminal.

Claude Code · terminal

claude mcp add --transport http agent-data https://agent-data.motie.dev/mcp

In Claude Code, run /mcp, select agent-data, then Authenticate. Sign in to your agent-data account in the browser.

Then ask your agent to use the Aviation Weather Center API for your task.

Call it over HTTP

Get an API key

Sign up free, generate an API key, and set it as AGENT_DATA_API_KEY in your environment. Your first 100 calls each month are free.

cURL · Metars latest

curl --request GET --get 'https://api.agent-data.dev/aviationweather-gov/v1/metars/latest' \
  --header "Authorization: Bearer $AGENT_DATA_API_KEY" \
  --data-urlencode 'ids=KJFK'

Endpoints

Inputs and response fields for every endpoint in this API.

GETMetars latest/v1/metars/latest

Fetches the current/latest METAR observation for each valid requested station. A valid station with no current report appears in missing_observations; an identifier absent from source station metadata appears in invalid_stations.

Input

idsRequiredQuery · string

Comma-separated ICAO station identifiers, one to 20 values.

Example: KJFK

Response

dataobject[]

data[].windobject

data[].wind.gust_knots?integer | null

data[].wind.speed_knots?integer | null

data[].wind.direction_degrees?integer | null

data[].clouds?object[]

data[].clouds[].coverstring

data[].clouds[].base_feet?integer | null

data[].stationobject

data[].station.namestring

data[].station.state?string | null

data[].station.country?string | null

data[].station.iata_id?string | null

data[].station.icao_idstring

data[].station.elevation_m?number | null

data[].station.latitude_deg?number | null

data[].station.longitude_deg?number | null

data[].raw_metarstring

data[].metar_typestring

data[].visibility?string | null

data[].dew_point_c?number | null

data[].report_time?string (date-time) | null

data[].altimeter_hpa?number | null

data[].received_time?string (date-time) | null

data[].temperature_c?number | null

data[].flight_category?string | null

data[].observation_timestring (date-time)

data[].sea_level_pressure_hpa?number | null

data[].observation_epoch_secondsinteger

hoursinteger | null

sourceobject

source.namestring

source.endpointstring

source.freshnessstring

source.retrieved_atstring (date-time)

requested_idsstring[]

invalid_stationsstring[]

missing_observationsstring[]

units_and_timestampsobject

units_and_timestamps.windstring

units_and_timestamps.cloudsstring

units_and_timestamps.pressurestring

units_and_timestamps.elevationstring

units_and_timestamps.timestampsstring

units_and_timestamps.visibilitystring

units_and_timestamps.temperaturestring

Fields marked ? are optional.

GETMetars history/v1/metars/history

Fetches all source METAR reports available within the requested 1–24 hour window. The source controls the actual available history; this API does not fabricate gaps or paginate beyond that source window.