# Still Able to Purchase an Air/Sky Unit?

**URL:** https://community.tempest.earth/t/still-able-to-purchase-an-air-sky-unit/13443
**Category:** General
**Created:** [May 3, 2021, 6:05pm UTC](https://community.tempest.earth/t/still-able-to-purchase-an-air-sky-unit/13443 "2021-05-03T18:05:52Z")
**Posts on this page:** 1
**Showing post:** 15

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### 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: [May 7, 2021, 11:17am UTC](https://community.tempest.earth/t/still-able-to-purchase-an-air-sky-unit/13443/15 "2021-05-07T11:17:10Z")

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Unless WF have changed the algorithm since last summer (perfectly possible!), the maximum temperature correction they make is 1.5 deg F, so I don’t think the difference you are seeing is due to the algorithmic correction. It is probably more related to the different thermal properties of the two devices.

> [@Calibration questions](https://community.tempest.earth/t/calibration-questions/9839/15):
>
> _On the ambient temperature correction…_  
> The Tempest software adjusts the raw temperature reading to an ambient temperature simulating a fan aspirated environment. This correction is calculated using solar radiation and wind speed data. Stronger irradiance values and light or calm winds will yield a higher temperature correction **up to a maximum of 1.5 degrees F**.

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_[View the full topic](https://community.tempest.earth/t/still-able-to-purchase-an-air-sky-unit/13443)._