There have been important changes since this discussion started.

The original API this thread was about is now deprecated and no longer supported. Please make sure to read the opening post, which has been updated with the current status and next steps.

We now strongly recommend using API v2, which is the only actively maintained and supported version going forward. The full and up-to-date documentation for API v2 is available here:
https://stations.windy.com/api-reference

Because this thread originally served the legacy API and to avoid further confusion, it is now locked. For all new implementations and questions, please refer to the new API documentation and start a new topic if needed.

Thanks to everyone who contributed here, and thanks for your understanding.

How exactly does sending a precip value work?

I am sending precipitation for the last hour as written in the parameter. I have programmed a time window where precipitation for the last 60 minutes is stored and the value is sent every 5 minutes. Anyway, I don't think that adding up the precipitation on the windy side works correctly or the interpretation of this parameter is wrong.

I will give an example of what I send.

10:00 - 0mm (past hour)
10:05 - 5mm (past hour) ------+5mm rain between 10:00-10:05
10:10 - 5mm (past hour)
10:15 - 5mm (past hour)
10:20 - 5mm (past hour)
10:25 - 5mm (past hour)
10:30 - 20mm (past hour)------+15mm rain between 10:25-10:30
10:35 - 20mm (past hour)
10:40 - 20mm (past hour)
10:45 - 20mm (past hour)
10:50 - 20mm (past hour)
10:55 - 20mm (past hour)
11:00 - 20mm (past hour)
11:05 - 20mm (past hour)
11:10 - 15mm (past hour) -------minus 5 because an hour has passed since the rains
11:15 - 15mm (past hour)
11:20 - 15mm (past hour)
11:25 - 15mm (past hour)
11:30 - 15mm (past hour)
11:35 - 0mm (past hour) -------minus -15 because an hour has passed since the rains

So I don't know where the error is, but I'm sending the data as it should (according to the interpretation of precipitation for the past hour)

Thank you.

https://stations.windy.com/pws/station/ey.......................................Ms/1

Notice the /1 at the end. That is not my User ID, but Station ID, which is a number 1, 2, 3, etc. I have two stations registered. As the API secret key is unique, there is not need for further id's other than which station you want to output as you can have multiple stations registered.

Output is somehting like this:

{
  "header": {
    "name": "Hillerød Vejr",
    "content": {
      "url": "https://www.weatherlink.com/embeddablePage/show/29253b7531e245f29849d08b8aa11b36/summary",
      "text": "Roland Lyngvig"
    },
    "agl_temp": 2,
    "agl_wind": 10,
    "elev_m": 51,
    "lat": 55.9441848441452,
    "lon": 12.3373728990555,
    "stationType": "Davis Vantage Pro2 Plus",
    "shareOption": "Open",
    "id": "1f071b2f3",
    "stationId": 1,
    "type": "pws",
    "updated": "2024-07-13T09:50:53.349Z",
    "observation": {
      "avgFreqMin": 5.00248138957816,
      "records": 4,
      "avgDelayMin": 2.50124069478908,
      "latestObs": "2024-07-12T05:58:02.000Z"
    },
    "observationUpdated": "2024-07-12T06:01:57.473Z"
  },
  "data": {
    "ts": [1718273281000, 1718273581000, 1718273881000, 1718274181000, 1718274481000, 1718274781000, 1718275081000, 1718275381000, 1718275681000, 1718275981000, 1718276281000, 1718276581000, 1718276881000, 1718277181000, 1718277481000, 1718277781000, 1718278081000, 

My reporting happens from a C#/.NET program I have made that runs locally in my house so it can access the WeatherLink device and read out data every 5 minutes. That is a very good and stable solution that runs 99.9%.

In addition, there is no rainfall data

https://stations.windy.com/pws/stations/API-KEY

https://meteokalamaria.gr

[https://kalamaria.gr](link url)

https://stations.windy.com/pws/station/API-KEY/STATION_ID

Thanks Bernard
My ID is 1f070c3f5

Cheers

why not just pick up data from PWS owners wu registered station?
it's so simple !
isamroiy2 is my Wu PWS
f07257f3 is windy no!