Public Dataset

National Weather Service

The National Weather Service API provides access to current weather conditions, detailed forecasts, and active weather alerts across the United States. Data includes 7-day forecasts in 12-hour periods, hourly forecasts, gridpoint-level forecast data at ~2.5km resolution, active severe weather alerts by state or zone, and real-time station observations. Coverage spans all US states and territories through a network of local Weather Forecast Offices. The API is free, open, and requires no authentication beyond a User-Agent header.

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What You Can Query

You can look up any location by latitude and longitude to get its forecast office and grid coordinates (points endpoint), retrieve 7-day and hourly forecasts for that grid location (gridpoints/forecast), check current conditions from the nearest weather station (stations/observations), and browse active severe weather alerts by state or zone (alerts endpoint).

What You Can Do

Real-time weather conditions for any US location

7-day and hourly weather forecasting

Severe weather alert monitoring by state or zone

Comparing forecast conditions across cities

Tracking weather observations from local stations

Weather-driven business and event planning

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