Weather alerts and forecasts

Weather alerts, current observations and forecasts for the United States and Australia from public-domain sources.

Active weather alerts (NWS CAP, and BoM warnings where licensed), current observations (NWS stations, NOAA ISD) and hourly and daily forecasts (NWS gridpoints for the US, NOAA GFS subsets for Australia) for any coordinate in the United States or Australia, normalised into one schema with a coverage field.

Collection ok, last fetch 2026-11-11T06:19:33Z. RealtimeAPI feed weatherdata. Machine copies: OpenAPI, pricing JSON.

Endpoints

Endpoint	What	Cadence	Per request	MCP tool
`GET /weather/api/v1/alerts`	Active weather alerts for a US state, NWS zone or county code, or an Australian state, with severity, urgency, onset and expiry. US alerts from the National Weather Service; Australian warnings from the Bureau of Meteorology where licensed.	Refreshes every 60 seconds.	$0.002	weather_alerts
`GET /weather/api/v1/alerts/{alert_id}`	One alert by id with its description, instruction, areas, zone codes and polygon.	Refreshes every 60 seconds.	$0.002
`GET /weather/api/v1/current`	Current conditions at the nearest reporting station within 150 km of a coordinate in the United States or Australia: temperature, dew point, wind, gust, visibility, pressure, sky cover, present weather.	Refreshes every 5 minutes.	$0.003	weather_current
`GET /weather/api/v1/forecast/hourly`	Hourly forecast for a coordinate in the contiguous United States or Australia from the NOAA GFS 0.25 degree model: temperature, humidity, wind, gust, precipitation and cloud cover, up to 120 hours.	Refreshes every 60 minutes or on a new model cycle.	$0.005	weather_forecast
`GET /weather/api/v1/forecast/daily`	Daily forecast summary for a coordinate in the contiguous United States or Australia (min and max temperature, mean humidity and cloud, max wind and gust, precipitation total), up to 5 days, aggregated from the hourly GFS series.	Refreshes every 60 minutes or on a new model cycle.	$0.005	weather_forecast_daily
`GET /weather/api/v1/stations/near`	Reporting stations (METAR) within a radius of a coordinate in the United States or Australia, nearest first, with distance.	Refreshes every 24 hours.	$0.001	weather_stations_near

First calls

GET /weather/api/v1/alerts?region=TX (MCP weather_alerts): every active alert for a state or zone, severity first
GET /weather/api/v1/current?lat=-33.87&lon=151.21 (MCP weather_current): conditions at the nearest reporting station
GET /weather/api/v1/forecast/hourly?lat=-33.87&lon=151.21&hours=48 (MCP weather_forecast): the GFS hourly series for a point

Example prompts

"Is there any severe weather alert active for Texas right now?"
"What are the current conditions at Sydney Airport?"
"Give me the 48 hour wind and rain forecast for Houston."
"Will it rain in Melbourne over the next three days?"
"Which weather stations are within 50 km of Brisbane?"

Sources and licences

Publisher	What	Licence
NOAA National Weather Service	Active alerts (CAP) for every US state and territory	US public domain
NOAA Aviation Weather Center	METAR and SPECI reports from US and Australian stations, every minute	US public domain
NOAA NCEP GFS 0.25 degree	Hourly forecasts to 120 h, four cycles a day, subset to the contiguous US and Australia	US public domain
Australian Government Bureau of Meteorology	CAP-AU warnings from the anonymous FTP	BoM copyright notice, acknowledgement required (served only when BOM_ENABLED)

Attribution travels in the source array of every response.

Through RealtimeAPI.ai

The same endpoints are the feed weatherdata on RealtimeAPI.ai, with 1,000 free calls a month on one rta_live_ key across every feed. Paths are identical after the feed slug:

curl https://api.realtimeapi.ai/v1/weatherdata/api/v1/alerts?region=TX -H "X-API-Key: rta_live_..."

Setup prompt and details.