Aviation Weather API: Get METAR, TAF, SIGMETs, and Winds Aloft in One Call

Weather is the data every serious aviation app needs and almost nobody wants to parse by hand. The raw sources — NOAA's Aviation Weather Center, the global METAR/TAF feeds — hand you cryptic teletype strings like 24017G23KT 10SM FEW060 BKN180 28/17 A2974 and leave the decoding to you. An aviation weather API that returns clean, decoded JSON turns that into {"wind": {"direction": 240, "speed": 17, "gust": 23}}. Here's how to get METAR, TAF, SIGMETs, and winds aloft from one integration — decoded.

What "aviation weather" actually covers

Aviation weather isn't one product; it's a family of observations and forecasts, each answering a different question:

A real weather integration touches several of these, which is exactly why having them behind one key matters more than any single endpoint.

The decoded-JSON advantage

Here's the differentiator. Ask the raw sources for a METAR and you get a string you have to tokenize yourself — split the wind group, expand the cloud codes, convert the altimeter, work out the flight category. Ask SkyLink API with parsed=true and the decode is done:

curl "https://skylink-api.p.rapidapi.com/weather/metar/KJFK?parsed=true" \
  -H "X-RapidAPI-Key: $RAPIDAPI_KEY" \
  -H "X-RapidAPI-Host: skylink-api.p.rapidapi.com"

{
  "raw": "METAR KJFK 062251Z 24017G23KT 10SM FEW060 BKN180 28/17 A2974",
  "icao": "KJFK",
  "parsed": {
    "wind": { "direction": 240, "speed": 17, "gust": 23, "variable": [] },
    "visibility": { "value": 10, "repr": "10SM" },
    "clouds": [
      { "type": "FEW", "base": 60, "repr": "FEW060" },
      { "type": "BKN", "base": 180, "repr": "BKN180" }
    ],
    "temperature": 28,
    "dewpoint": 17,
    "altimeter": 29.74,
    "flight_rules": "VFR"
  }
}

That flight_rules field — VFR, MVFR, IFR, LIFR — is computed for you from ceiling and visibility, the single most useful derived value in the whole response, and one you'd otherwise have to implement from the raw string. The same parsed=true option decodes TAFs. We break down every field in METAR and TAF explained.

SIGMETs, winds aloft, and the rest

Surface weather is only half the picture. For en-route hazards, the AIRMET/SIGMET endpoint returns the active advisory polygons intersecting a bounding box — severe turbulence, icing, convective storms — the same products behind SIGMETs, AIRMETs, and PIREPs explained. For cruise planning, winds aloft returns decoded wind and temperature at altitude:

curl "https://skylink-api.p.rapidapi.com/weather/airsigmet?bbox=38,-90,45,-80&type=sigmet" \
  -H "X-RapidAPI-Key: $RAPIDAPI_KEY" \
  -H "X-RapidAPI-Host: skylink-api.p.rapidapi.com"

Pair those with PIREPs for pilot-observed conditions and you've got the full hazard stack that feeds everything from a turbulence forecast to storm avoidance.

Literally one call: the flight briefing

If you want METAR, TAF, NOTAMs, and PIREPs for a route in a single request, the flight briefing endpoint aggregates them:

curl "https://skylink-api.p.rapidapi.com/briefing/flight?departure=KJFK&destination=KBOS" \
  -H "X-RapidAPI-Key: $RAPIDAPI_KEY" \
  -H "X-RapidAPI-Host: skylink-api.p.rapidapi.com"

It's the one-call preflight package — the weather half of everything a dispatcher checks before releasing a flight.

How it compares

"Aviation weather API" is contested mostly between a raw government feed and a thin decoder:

Competitor details reflect public positioning as of mid-2026 — verify before committing.

NOAA's data is authoritative and free, but it's raw and you own all the parsing and uptime. The value of an API here is the decode plus the aggregation — weather, NOTAMs, airports, and ADS-B behind one integration.

SkyLink API gives you a free tier of 1,000 requests/month across the whole weather stack, with paid plans starting at $18.59/mo for production. It's available through the free trial — sign up, grab a key, and get decoded weather instead of parsing teletype.