Historical Observations by Station and Date

[LatitudeAdjustment]

Is it possible to obtain historical observations by station and date? I am using "/stations/KHPN/observations" to request station KHPN current observations. As expected a FeatureCollection of observations from today (2020-10-14T12:56:00+00:00) back to 2020-09-19T02:56:00+00:00 is returned.

However, I would like to obtain historical observations by date if possible, something like: "/stations/KHPN/observations/2020-10-01". Is this data available? Is there a time format for "/stations/KHPN/observations/{time}" that would allow me to make such a request?

Thanks and best regards,
Mark

[StephenClouse]

No, the API does not retain historical data. Our current retention target is 7 days.

Archive data can be requested from NCEI.

[LatitudeAdjustment]

Ok, API by date would be useful. I will consult NCEI for archive data.
Could you please explain the use of time parameter and correct format for this API call:
"/stations/KHPN/observations/{time}"?

[StephenClouse]

The time parameter should be in ISO8601 format, e.g.:

https://api.weather.gov/stations/KHPN/observations/2020-10-14T14:56:00+00:00

This is for retrieving single observations.

[LatitudeAdjustment]

Ok, thank you.