External temperature sensor

Hi,

I am wondering if there is a recommended external temp sensor that works with pix cube and ardupilot.
If so is this sensor able to be used for calculations such as for airspeed? I currently enter the ground temp prior to launch.

imagehttps://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS2Yjlfq9tKgvgk9wubXudAn8WpLSpFOm5sbqpHGikpWgD8emRc4nH8Rdkc

Thanks,
Justin