# Wet bulb globe temperature **URL:** \ **Category:** Feature Requests\ **Created:** [July 29, 2021, 6:21pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386 "2021-07-29T18:21:59Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![mikerector](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/mikerector/32/10291_2.png) [@mikerector](https://community.tempest.earth/u/mikerector)\ **Post date:** [July 29, 2021, 6:21pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/1 "2021-07-29T18:21:59Z")
I would also like to see a wet bulb globe temperature reading. This would be very beneficial for anyone working outside to measure heat stress on the body. ---
**Author:** ![glenngoddard](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@glenngoddard](https://community.tempest.earth/u/glenngoddard)\ **Post date:** [July 29, 2021, 6:38pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/2 "2021-07-29T18:38:06Z")
We that already and a Delta-T for Air Temp to Wet Bulb Temperature. This is displayed on the Android app at least. ---
**Author:** ![mikerector](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/mikerector/32/10291_2.png) [@mikerector](https://community.tempest.earth/u/mikerector)\ **Post date:** [July 29, 2021, 7:05pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/3 "2021-07-29T19:05:14Z")
It has wet bulb temp, but not wet bulb globe temp. Two different measurements. ---
**Author:** ![wx3i09](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/wx3i09/32/14944_2.png) [@wx3i09](https://community.tempest.earth/u/wx3i09)\ **Post date:** [July 29, 2021, 7:07pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/4 "2021-07-29T19:07:40Z")
@glenngoddard I only see Wet Bulb Temperature. That is not the same as Wet Bulb Gloge Temperature (usually abbreviated as WBGT). There are a lot of links that go into more detail on WBGT … here is one … [WetBulb Globe Temperature](https://www.weather.gov/tsa/wbgt) . Here is a wikipedia areticle … [Wet-bulb globe temperature - Wikipedia](https://en.wikipedia.org/wiki/Wet-bulb_globe_temperature) . That being said, if we had a better voting system, I would definitely use a vote for WBGT support … very useful (in my opinion, one of the better heat indices out there). ---
**Author:** ![glenngoddard](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@glenngoddard](https://community.tempest.earth/u/glenngoddard)\ **Post date:** [July 29, 2021, 8:44pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/5 "2021-07-29T20:44:53Z")
I didn’t realize there was a difference. I did find some estimate calculations for black bulb temperatures to help estimate WBGT. Since the weather stations don’t have the black bulb temperature it will have to be estimated to get the WBGT. ---
**Author:** ![glenngoddard](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@glenngoddard](https://community.tempest.earth/u/glenngoddard)\ **Post date:** [July 31, 2021, 3:17pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/6 "2021-07-31T15:17:37Z")
If you use Home Assistant and the weatherflow2mqtt integration, I am working on a PR to add WBGT. In case you do not and also to make it easier for developers here: WBGT = 0.7Twb + 0.2Tg + 0.1Ta where WBGT is Wet Bulb Globe Temperature in C Twb is Wet Bulb Temperature in C Tg is Black Globe Temperature in C Ta is Air Temperature (dry bulb) The above equation is exactly the same for F Tg = 0.01498SR + 1.184Ta - 0.0789Rh - 2.739 where Tg is Black Globe Temperature in C SR is Solar Radiation in Wm^2 Ta is Air Temperature in C Rh is Relative Humidity in % This equation as written will not work with F directly. So…do we want Black Globe Temperature as an additional output, my initial guess is no. So. WBGT = 0.7Twb + 0.2 \* (0.01498SR + 1.184Ta - 0.0789Rh - 2.739) + 0.1Ta simplified: WBGT = 0.7Twb + 0.002996SR + 0.3368Ta -0.01578Rh - 0.5478 The approximations I had previously found used Sun Azimuth to estimate Solar Radiation, we don’t have to estimate since we have the actual measurement from the Tempest. I used Celsius for this since that is what most individuals in the world use, even if I don’t as a regular system. The conversion from Celsius to Fahrenheit is simple so it should not be an issue. ---
**Author:** ![ryanschwartz80](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@ryanschwartz80](https://community.tempest.earth/u/ryanschwartz80)\ **Post date:** [August 2, 2021, 6:41pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/7 "2021-08-02T18:41:22Z")
Having WBGT would be a selling point for Tempest since it could be used at facilities where there is outdoor physical activity taking place to monitor heat stress and eliminate a standalone WBGT tracker. A base level Kestrel 5400 Heat Stress Tracker is almost $500 USD. ---
**Author:** ![glenngoddard](https://avatars.discourse-cdn.com/v4/letter/g/71c47a/32.png) [@glenngoddard](https://community.tempest.earth/u/glenngoddard)\ **Post date:** [December 7, 2021, 6:56pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/8 "2021-12-07T18:56:29Z")
Forgot to come back and update, but WBGT was added to @bjarne’s WeatherFlow2MQTT for HomeAssistant. ---
**Author:** ![rleeden](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/rleeden/32/13174_2.png) [@rleeden](https://community.tempest.earth/u/rleeden)\ **Post date:** [March 25, 2022, 5:44pm UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/9 "2022-03-25T17:44:42Z")
Interestingly, the API has just had a new field added in the response for my weather station - wet\_bulb\_globe\_temperature. I wonder if this means we will soon see it in the App / Website? ---
**Author:** ![wx3i09](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/wx3i09/32/14944_2.png) [@wx3i09](https://community.tempest.earth/u/wx3i09)\ **Post date:** [March 26, 2022, 11:26am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/10 "2022-03-26T11:26:52Z")
There is an update from less than a month ago at [WeatherFlow-Tempest, Inc. | StartEngine](https://www.startengine.com/weatherflow-tempest) that says they are working on putting WBGT into the product, so, looks like they are making progress on that plan. ---
**Author:** ![ryanschwartz80](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@ryanschwartz80](https://community.tempest.earth/u/ryanschwartz80)\ **Post date:** [July 20, 2022, 1:00am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/11 "2022-07-20T01:00:10Z")
Just noticed that WBGT is now one of the advanced stats. That’s pretty neat! ![Screenshot 2022-07-19 195916](https://us1.discourse-cdn.com/flex020/uploads/sws/original/2X/e/ed7fb81edc397422bcea1349de94f17e831a258f.png) ---
**Author:** ![wx3i09](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/wx3i09/32/14944_2.png) [@wx3i09](https://community.tempest.earth/u/wx3i09)\ **Post date:** [July 20, 2022, 2:01am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/12 "2022-07-20T02:01:23Z")
Ah … cool. I had seen in a newletter that it was coming. Not as prominent as I would have liked, but, good to see it. ---
**Author:** ![ryanschwartz80](https://avatars.discourse-cdn.com/v4/letter/r/90db22/32.png) [@ryanschwartz80](https://community.tempest.earth/u/ryanschwartz80)\ **Post date:** [July 20, 2022, 3:17am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/13 "2022-07-20T03:17:35Z")
I was hoping there would be some graphing capability to see history as with the other temperature measurements, but it’s something that can be added down the road. ---
**Author:** ![eric](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/eric/32/13553_2.png) [@eric](https://community.tempest.earth/u/eric)\ **Post date:** [July 20, 2022, 6:39am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/14 "2022-07-20T06:39:09Z")
Closing this to release the votes since it is now in the advanced stats of the app/webpage ---
**Author:** ![eric](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/eric/32/13553_2.png) [@eric](https://community.tempest.earth/u/eric)\ **Post date:** [July 20, 2022, 6:39am UTC](https://community.tempest.earth/t/wet-bulb-globe-temperature/14386/15 "2022-07-20T06:39:14Z")