The time stop spell says time stops for other creatures.

What all is affected by the spell? Is gravity affected? Air movement?

I know that the spell only does what it says, and nothing else, but just wondering.

In addition, is it saying that the other creatures are not affected by environmental effects and the like while time is stopped?

For instance, if a wind blew really hard at one of the creatures you're fighting, would it affect that foe while time stop is active? If you were to place a bear trap behind the person, and a hard wind blew enough to tip them, would they then fall over onto the bear trap and be damaged without the spell ending?

This is a very curious spell...