Toasting basically kills all bacteria/funghi that might have been present in the fresh flour, so it will be safe for a while (most likely just as long as the original flour would have been).
That said, there is one major difference between freshly toasted and yesterday toasted flour. Freshly toasted will have close to zero water content, while one that you've toasted a while ago will have absorbed some moisture from air. Air is typically 40-60% humid and roasted flour will absorb a bit of it.
Assume that freshly toasted flour is completely dry, while yesterday's has 5-10% of water by weight and adjust other ingredients accordingly.