First of all you have to find a windsock which at many aerodromes is situated a long way from a runway. At night it will seldom be possible to see a lighted windsock and even more difficult to pick its indication in the glare of a fire wrecking night vision - if any. Of course you could always remember what the ATIS wind was and mentally subtract or add a desired aircraft heading from there. In any case if the fire is on the take off run, and an abort takes place, it is all too easy to get be-fuddled with the mental maths of remembering which side is the upwind or downwind side after stopping and the cabin crew are hammering to get the pax out. Perhaps therefore the clue is to include the final direction of stopping during the before take off safety brief.