You'll find that temperature and blood oxygen (I assume you are thinking about measuring oxygen saturation) do not correlate with altitude sickness and cannot be used to predict AMS or alter ascent planning. It's perfectly possible for two people at the same altitude one to have saturations of 60% and be fine, and the other to be 80% and be seriously unwell.
You might find a symptom tracker (e.g. a simple Lake Louise score questionnaire) with ascent planning and WMS guidelines programmed in might be a better way to go than using physiological data. I suspect these already exist as mobile apps, maybe have a look at what else is already out there.