Is AviationWeather free to use?

Yes, AviationWeather is listed as a free public API. Visit the official documentation for current rate limits and usage policies.

Does AviationWeather require an API key?

No, AviationWeather works without any authentication — you can call it directly.

AviationWeather (NOAA) provides aviation weather — METARs, TAFs, and forecasts — keyless (verified live).

METAR (verified live — JFK):

curl "https://aviationweather.gov/api/data/metar?ids=KJFK"

2026/08/23 07:51 KJFK 070751Z 21008KT 10SM FEW250 27/16 A3005 RMK AO2 SLP175 T02720161

None — keyless.

Is AviationWeather free? Yes — free NOAA data (verified).

What does it return? METARs and forecasts.

Key needed? No — keyless.

API	Auth	HTTPS	CORS
7Timer! Weather, especially for Astroweather	No auth	No	Unknown	↗
AccuWeather Weather and forecast data	API Key	No	Unknown	↗
Aemet Weather and forecast data from Spain	API Key	Yes	Unknown	↗
APIXU Weather	API Key	Yes	Unknown	↗
AQICN Air Quality Index Data for over 1000 cities	API Key	Yes	Unknown	↗

API

Auth

HTTPS

CORS

Weather, especially for Astroweather

No auth

Unknown

Weather and forecast data

API Key