# Wind speed from Rest API? **URL:** \ **Category:** Developers\ **Created:** [August 8, 2020, 10:23pm UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541 "2020-08-08T22:23:36Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![EdmontonTom](https://avatars.discourse-cdn.com/v4/letter/e/d26b3c/32.png) [@EdmontonTom](https://community.tempest.earth/u/EdmontonTom)\ **Post date:** [August 8, 2020, 10:23pm UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/1 "2020-08-08T22:23:36Z")
Hey there 👋 Can anyone explain how to the wind average is calculated for the rest API? I accessed my station via the API at: [https://swd.weatherflow.com/swd/rest/observations/station/25764?api\_key=20c70eae-e62f-4d3b-b3a4-8586e90f3ac8](https://swd.weatherflow.com/swd/rest/observations/station/25764?api_key=20c70eae-e62f-4d3b-b3a4-8586e90f3ac8) the values I get for wind speeds are: “units\_wind”: “kph”, “wind\_avg”, “wind\_direction”, “wind\_gust”, “wind\_lull”, “wind\_chill”, “wind\_avg”: 2.3, “wind\_direction”: 120, “wind\_gust”: 3.1, “wind\_lull”: 1.1, “wind\_chill”: 27.1, At the same time, I get very different values from the app/webinterface at: [Tempest](https://tempestwx.com/station/25764/grid) The average has never matched between the two so I’m wondering what I’m missing to understand this. Than you! ---
**Author:** ![GaryFunk](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/garyfunk/32/5729_2.png) [@GaryFunk](https://community.tempest.earth/u/GaryFunk)\ **Post date:** [August 9, 2020, 12:54am UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/2 "2020-08-09T00:54:07Z")
Yes. It is the average of the wind speeds during the last 60 seconds. There is a specific formula for the calculation of speed and direction. ---
**Author:** ![EdmontonTom](https://avatars.discourse-cdn.com/v4/letter/e/d26b3c/32.png) [@EdmontonTom](https://community.tempest.earth/u/EdmontonTom)\ **Post date:** [August 9, 2020, 2:28am UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/3 "2020-08-09T02:28:18Z")
Thanks for the answer, Gary. Would it be correct in thinking that this is also the average over 1 minute too? Shouldn’t these numbers be the same between the app and api? ![image](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/7/7c714ae865483b0d99e6c86f50c76be9fc402a82.jpeg) ---
**Author:** ![GaryFunk](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/garyfunk/32/5729_2.png) [@GaryFunk](https://community.tempest.earth/u/GaryFunk)\ **Post date:** [August 9, 2020, 3:14am UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/4 "2020-08-09T03:14:53Z")
They will be depending on when the call is made. The applications Apple, Android and website get the data via a websocket. The REST API gets the data from the same database as the websocket. ---
**Author:** ![EdmontonTom](https://avatars.discourse-cdn.com/v4/letter/e/d26b3c/32.png) [@EdmontonTom](https://community.tempest.earth/u/EdmontonTom)\ **Post date:** [August 9, 2020, 7:38pm UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/5 "2020-08-09T19:38:47Z")
The average hasn’t gone below 5 km/h all day today and yet it’s still always in the low 2 km/h range. I still don’t understand what I’m missing. It seems off to me but I’m sure it’s my misunderstanding. I’ve been comparing the two for most of the day. ![image](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/5/5631e51e85c4855fc73c0cd379496d2b42923e03.jpeg) ---
**Author:** ![peter](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/peter/32/1365_2.png) [@peter](https://community.tempest.earth/u/peter)\ **Post date:** [August 9, 2020, 8:00pm UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/6 "2020-08-09T20:00:19Z")
I think it is the units that is confusing you. Despite the `units_wind` field reading `kph`, wind speeds in the API are reported in meters per second. The `units_wind` field refers to what units you use in the app. You will need to convert the value in the API to kph to match what you see in the app ---
**Author:** ![EdmontonTom](https://avatars.discourse-cdn.com/v4/letter/e/d26b3c/32.png) [@EdmontonTom](https://community.tempest.earth/u/EdmontonTom)\ **Post date:** [August 9, 2020, 8:08pm UTC](https://community.tempest.earth/t/wind-speed-from-rest-api/8541/7 "2020-08-09T20:08:03Z")
That is exactly what has thrown me off! Thank you, Peter!