National Weather Service API
by weather.gov
Weather forecasts
Added on February 4th, 2011
Checked and working on November 1st, 2026
Visit weather.gov →
What it does
The National Weather Service API (api.weather.gov) gives official US weather data: forecasts for any point in 12-hour and hourly periods, active weather alerts, observations from weather stations, and the forecast grids behind them. Responses are JSON and GeoJSON. Free and no key needed; send a User-Agent that identifies your app. It replaces the old NDFD XML/SOAP service and covers the United States only.
At a glance
- API key
- Not needed · More APIs with no key
- Pricing
- Free and no key needed; send a User-Agent that identifies your app.
- From the browser
- Yes (CORS)
- Formats
- JSON
- Interface
- REST, HTTP-GET
- Provider
- weather.gov
- Last checked
- Working on November 1st, 2026
More information: https://www.weather.gov/documentation/services-web-api
Compare: Open-Meteo vs National Weather Service API
Used in: Build a weather widget with free APIs
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Example request
curl
curl 'https://api.weather.gov/points/38.8894,-77.0352'JavaScript
const response = await fetch("https://api.weather.gov/points/38.8894,-77.0352");
const data = await response.json();
console.log(data);Python
import requests
response = requests.get(
"https://api.weather.gov/points/38.8894,-77.0352",
timeout=30,
)
print(response.json())The JavaScript works in a web page as well as in Node.js 18 or newer.