AviationWeather (NOAA Aviation Weather Center)
FreeLiveLast verified 24 Sept 2026
NOAA aviation weather: live METARs, TAFs, PIREPs, and SIGMETs for airports worldwide.
Example request
curl -s 'https://aviationweather.gov/api/data/metar?ids=KMCI&format=json'
Free tier, in plain English
Free and keyless, but capped at 100 requests a minute with a custom User-Agent requested for heavier use.
Alternatives in Forecasts
AccuWeatherCurrent conditions, forecasts, alerts and indices for locations worldwide from AccuWeather.FreemiumAEMET OpenDataOfficial Spanish weather forecasts, observations, and climate data, key required.FreeAPIXUDiscontinued weather API; apixu.com now server-redirects permanently to Weatherstack.ColorfulClouds Weather APIGlobal weather forecasts with minute-by-minute nowcasting and air-quality data by coordinates.FreemiumDark SkyRetired minute-by-minute forecast service bought by Apple; its successor is the WeatherKit REST API.