# Vertical Weather API > Atmospheric profiles from NOAA GFS at heights you choose, above ground (agl) or > above mean sea level (msl): wind, temperature, pressure, humidity and density. > Free beta; get a key at https://api.verticalweather.com/dashboard. - [Integration notes for agents](https://verticalweather.com/integration.md): units, coverage, errors and client rules. - [OpenAPI](https://verticalweather.com/openapi.json): the contract, with the API origin. - [Requests](https://verticalweather.com/guide/requests/), [Responses and units](https://verticalweather.com/guide/responses/), [Errors and limits](https://verticalweather.com/guide/errors-and-limits/) - [Terms of use](https://verticalweather.com/terms/) Read https://api.verticalweather.com/v1/atmosphere/capabilities before choosing inputs. Keep API keys on a server. Historical (ERA5) data and trajectories are not available.