Apparent Temperature is always reported in Celsius
I have Weather Plus set up to use Fahrenheit. (Yes, I know, sigh, but I'm in the US and it's just easier to match everyone else.)

For the most part this works fine, but the Apparent Temperature appears to always be reported in Celsius, not Fahrenheit; eg right now Current Temp is reported as 81 deg F, Apparent Temp as 25 deg F, which makes no sense, but converted from C to F is 77 deg F which is reasonable. 

If it matters, my data provider is OpenWeatherMap, I'm viewing the values in Eve, and the other options that may be relevant are 
"compatibility": "eve",
"conditionCategory": "simple",