Thanks to all the replies about the (very small) extra weight at the height of the ISS. As for the centrifugal force from the Earth's rotation, Wikipedia puts

Thanks to all the replies about the (very small) extra weight at the height of the ISS. As for the centrifugal force from the Earth's rotation, Wikipedia puts it at about 0.3% (which, added to the effect of the Earth's bulge, means you feel a total of 0.5% less weight at the equator than at the poles). https://en.m.wikipedia.org/wiki/Gravity_of_Earth#Latitude https://en.m.wikipedia.org/wiki/Gravity_of_Earth#Latitude