is the air intake temp sensor in the maf (before the radiator hose) or closer to the throttle body (After the radiator hose)?

i know anything to heat it up is negative but i cant help but to think the if is senses the temp where the air enters the filter by the maf it wouldnt read/sense it as hot as it would/may be later on down the tube/pipe by the radiator hose maybe just getting some thoughts out....x