# Air Temperature Readings (Offset)?

**URL:** <https://community.tempest.earth/t/air-temperature-readings-offset/10588>\
**Category:** General\
**Created:** [November 29, 2020, 10:12pm UTC](https://community.tempest.earth/t/air-temperature-readings-offset/10588 "2020-11-29T22:12:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![fpb](https://avatars.discourse-cdn.com/v4/letter/f/76d3ee/32.png) [@fpb](https://community.tempest.earth/u/fpb)\
**Post date:** [November 29, 2020, 10:12pm UTC](https://community.tempest.earth/t/air-temperature-readings-offset/10588/1 "2020-11-29T22:12:31Z")

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I installed (outddor) a new Tempest today and so far its working fine, haven’t tested the rain sensor yet.

I’m replacing a Ultimeter 2100 station that have the solar radiation shield, I noticed (only 25hrs. of use) that the Tempest temperature is off by around 4 degrees when the sun was out comparing it to the Ultimeter, the ambient temperature was in the 50’s. I looked around to neighbors weather stations and the Ultimeter report are very similar to the other weather stations in the area. I checked the [weather.com](http://weather.com) site and the temperature matched with the Ultimeter, is there a way to calibrate (offset) the Tempest? or there is an AI that will correct it ?

Edit: Now during the night the temperature is matching the Ultimeter.

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**Author:** ![sunny](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/sunny/32/16368_2.png) [@sunny](https://community.tempest.earth/u/sunny)\
**Post date:** [November 30, 2020, 12:26am UTC](https://community.tempest.earth/t/air-temperature-readings-offset/10588/2 "2020-11-30T00:26:17Z")

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give it 10 days to calibrate itself.

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**Author:** ![iladyman](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/iladyman/32/2305_2.png) [@iladyman](https://community.tempest.earth/u/iladyman)\
**Post date:** [November 30, 2020, 4:34am UTC](https://community.tempest.earth/t/air-temperature-readings-offset/10588/3 "2020-11-30T04:34:11Z")

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I did not realise the temperature calibrates after a few days.  
The temperature is compensated for light winds.  
I thought it must be a standard compensation for all Tempests.  
cheers Ian 🙂

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**Author:** ![sunny](https://sea2.discourse-cdn.com/flex020/user_avatar/community.tempest.earth/sunny/32/16368_2.png) [@sunny](https://community.tempest.earth/u/sunny)\
**Post date:** [November 30, 2020, 8:50am UTC](https://community.tempest.earth/t/air-temperature-readings-offset/10588/4 "2020-11-30T08:50:01Z")

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temperature itself doesn’t calibrate, but as the tempest is often placed high up in the sun, the unit will heat up. There is a good compensation in place, but that depends on other parameters (wind/brightness) that do need some time to calibrate.