Google says 1 cubic meter of air has 1 kg of mass at room temp. This seems like garbage, as if the container is supplying the mass. But if there is no container, it cannot take 1 kg of pressure to lift from below at some low, but non-zero, airspeed because its gravitational weight is zero due to buoyancy around air of the same composition and temperature.
Is my intuition or is the web wrong? Ultimately, I'm trying to calculate the mass of a cubic mile of air for calculations regarding wind generation (and its possible effects, environmentally).