The above result show that as the humidity increases breakdown occurs at a lower voltage however the effect of humidity is not more in sphere-sphere gap, but it is more predominant in case of needle-needle gap. But in general it is concluded that the breakdown voltage of air decreases in higher condition of relative humidity when temperature and pressure is uncontrolled. This is due to the fact that air density is more under humid condition and higher atmospheric pressure, when more molecules are available for ionization leading to an earlier breakdown.